Page 1 X734de, X736de, X738de, X738dte MFP 7526 • Table of contents • Start diagnostics • Safety and notices • Trademarks • Index Lexmark and Lexmark with diamond design are trademarks of Lexmark International, Inc., registered in the United States and/or other countries.
Page 2 Lexmark, Lexmark with diamond design, and MarkNet are trademarks of Lexmark International, Inc., registered in the United States and/or other countries. PrintCryption is a trademark of Lexmark International, Inc.
Page 3: Table Of Contents
7526 Table of contents Previous Notices and safety information ......... . . xi Laser notice .
Page 4 7526 147.xx, 920.01—Motor (aligner) error service check ........2-55 Previous 155.xx—Cam motor error service check .
Page 5 7526 920.10—POST—Three toner sensors not connected error service check ....2-113 Previous 920.11—POST—Two toner sensors not connected error service check ....2-114 920.12—POST—One sensor not connected error service check .
Page 6 7526 Prt Quality Pages ............. . . 3-32 Previous Reports .
Page 7 7526 Printer removal procedures ............4-19 Previous Precautions to take before maintenance work .
Page 8 7526 Top access cover springs removal ..........4-179 Previous Top cover camshaft assembly removal .
Page 9 7526 HCIT pick tires removal ............4-298 Previous HCIT slide assembly with spring removal .
Page 10 7526 Previous Next Go Back Service Manual...
Page 11: Notices And Safety Information
7526 Notices and safety information Previous The following laser notice labels may be affixed to this printer. Next Laser notice Go Back This product is certified in the U.S. to conform to the requirements of DHHS 21 CFR Subchapter J for Class I (1) laser products, and elsewhere is certified as a Class I laser product conforming to the requirements of IEC 60825-1.
Page 12: Aviso Sobre O Laser
7526 Previous Avvertenze sui prodotti laser Questo prodotto è certificato negli Stati Uniti come prodotto conforme ai requisiti DHHS 21 CFR Sottocapitolo J per i prodotti laser di Classe I (1), mentre in altri paesi è certificato come prodotto laser di Classe I conforme ai requisiti IEC 60825-1.
Page 13 7526 Previous Laserinformatie Dit product is in de Verenigde Staten gecertificeerd als een product dat voldoet aan de vereisten van DHHS 21 CFR paragraaf J voor laserproducten van klasse I (1). Elders is het product gecertificeerd als een laserproduct van klasse I dat voldoet aan de vereisten van IEC 60825-1. Next Laserproducten van klasse I worden geacht geen gevaar op te leveren.
Page 14 7526 Previous Laser-notis Denna produkt är certifierad i USA i enlighet med kraven i DHHS 21 CFR underkapitel J för klass I (1)- laserprodukter, och på andra platser certifierad som en klass I-laserprodukt i enlighet med kraven i IEC 60825-1. Next Klass I-laserprodukter betraktas inte som skadliga.
Page 15 7526 Previous Next Go Back Notices and safety information...
Page 16 7526 Previous Next Go Back Service Manual...
Page 17: Lithium Warning
7526 Previous Lithium warning CAUTION This product contains a lithium battery. THERE IS A RISK OF EXPLOSION IF THE BATTERY Next IS REPLACED BY AN INCORRECT TYPE. Discard used batteries according to the battery manufacturer’s instructions and local regulations. Go Back Safety information The safety of this product is based on testing and approvals of the original design and specific •...
Page 18 7526 Previous Sicherheitshinweise • Die Sicherheit dieses Produkts basiert auf Tests und Zulassungen des ursprünglichen Modells und bestimmter Bauteile. Bei Verwendung nicht genehmigter Ersatzteile wird vom Hersteller keine Verantwortung oder Haftung für die Sicherheit übernommen. Next Die Wartungsinformationen für dieses Produkt sind ausschließlich für die Verwendung durch einen •...
Page 19 7526 Previous Informació de Seguretat • La seguretat d'aquest producte es basa en l'avaluació i aprovació del disseny original i els components específics. El fabricant no es fa responsable de les qüestions de Next seguretat si s'utilitzen peces de recanvi no autoritzades. •...
Page 20: Preface
7526 Preface Previous This manual contains maintenance procedures for service personnel. It is divided into the following chapters: General information contains a general description of the MFP and the maintenance approach used to Next repair it. Special tools and test equipment, as well as general environmental and safety instructions, are discussed.
Page 21: Conventions
7526 Previous Conventions Note: A note provides additional information. Warning: A warning identifies something that might damage the product hardware or software. Next There are several types of caution statements: CAUTION Go Back A caution identifies something that might cause a servicer harm. CAUTION This type of caution indicates there is a danger from hazardous voltage in the area of the product where you are working.
Page 22 7526 Previous Next Go Back Service Manual xxii...
Page 23: General Information
1. General information Previous Models Next Machine type/ Model name Description model Go Back Lexmark X734de 7526-235 4-in-1 Color MFP Lexmark X734de 7526-275 4-in-1 Color MFP, with fax modem Lexmark X734de 7526-295 4-in-1 Color MFP, with fax modem Lexmark X736de...
Page 24: Media Options
2000 sheet drawer (always at the lowest position.) A caster base is required with some configurations. Including the base machine capacity of 650 sheets, the MFP supports up to 3,200 sheets. The Lexmark C73xde options are compatible with the Lexmark X73xde MFP, but not with any other Lexmark Go Back printers.
Page 25: Clearances
7526 Previous Height Width Depth Weight Spacer 169 mm 435 mm 545 mm 3.5 kg (6.7 in) (17.1 in) (21.5 in) (7.6 lbs) Caster base only 107 mm 768 mm 801 mm 27.2 kg Next (4.2 in) (30.2 in) (31.5 in) (60 lbs) * Options are 6.6 in.
Page 26: Memory
7526 ADF type X734de—Simplex ADF with C-shaped path Previous X736de, X738de, X738dte—Duplex scan, recirculating (RADF), C-shaped path Optical resolution ADF Maximum 600 x 600 dpi (monochrome and color) Next ADF input and output 50 sheets (20 lb or 75 g/m...
Page 27: Environment Specifications
7526 PostScript 3 emulation • Previous • PCL 5c and PCL 6 Emulation PDF 1.6 with backward compatibility • • PPDS (activated from configuration menu) HTML • • Next Direct Image (TIFF, TIF, JPEG, JPG, GIF, PNG, BMP, PCX, and DCX) •...
Page 28: Electrical And Power Specifications
The following table specifies nominal average power requirements for the basic printer configurations. All power levels are shown in Watts (W). Maximum current is given in Amperes (A). Next Lexmark X738de, Printing states Lexmark X734de Lexmark X736de X738dte Printing states Go Back...
Page 29: Acoustic Specifications
Scanning Standby mode Lexmark has implemented features in the X73xde Series MFPs that allow our customers to easily select various operating modes in order to reach their sustainability goals related to environmental and noise pollution. These new features are Eco Mode and Quiet Mode.
Page 30: Media Specifications
7526 Previous Media specifications Paper designed for use with xerographic copiers should provide satisfactory print quality and feed reliability. Other types of media may be suitable. It is recommended that users test any particular brand for suitability to their applications. Refer to the printer User's Guide for additional media specifications. Next Paper Go Back...
Page 31 7526 Using recycled paper and other office papers Previous Recycled office paper produced specifically for use in laser (electrophotographic) printers may be used in your printer. However, no blanket statement can be made that all recycled paper will feed well. Generally, the following property guidelines apply to recycled paper.
Page 32: Input And Output Capacities
Capacity may vary and is subject to media specifications and printer operating environment. The capacities are based on plain paper at 75g/m Next Support by model Function Go Back Lexmark X734de, Lexmark X738dte X736de, X738de Standard input sources Primary tray capacity (sheets) 1,100...
Page 33: Input And Output Sizes And Types
7526 Input and output sizes and types Previous Next Media Sizes Go Back Paper sizes ✓ ✓ ✓ ✓ ✓ ✓ A4 210 x 297 mm A5 148 x 210 mm ✓ ✓ ✓ ✓ ✓ A6 105 x 148 mm ✓...
Page 34 7526 Previous Media Sizes (continued) Next Go Back Envelopes ✓ ✓ C6 Envelope 114 x 162 mm B6 Envelope 125 x 176 mm ✓ ✓ C65 Envelope 114 x 229 mm ✓ ✓ C5 Envelope 162 x 229 mm ✓ ✓...
Page 35: Paper Guidelines
7526 Previous Media weight, primary tray and option tray Size Type Weight Letter, Legal, A4 Xerographic and bond Long grain 60 g/m –162.7 g/m (16 lb–43 lb) Next Short grain 162.7 g/m –198.9 g/m (43 lb–53.2 lb) Recycled Long grain 75 g/m –177 g/m (20 lb–47 lb)
Page 36 7526 Grain direction—Grain refers to the alignment of the paper fibers in a sheet of paper. Grain is either grain long, Previous running the length of the paper, or grain short, running the width of the paper. For 60 to 135 g/m (16 to 36 lb bond) paper, grain long paper is recommended.
Page 37: Tools Required For Service
7526 Storing paper Previous Use these paper storage guidelines to help avoid jams and uneven print quality: For best results, store paper where the temperature is 21°C (70°F) and the relative humidity is 40%. Most • label manufacturers recommend printing in a temperature range of 18 to 24°C (65 to 75°F) with relative Next humidity between 40 and 60%.
Page 38 7526 HCOF High-Capacity Output Finisher Previous HVPS High-Voltage Power Supply Internal Solutions Port Image Transfer Unit Black LASER Light Amplification by Stimulated Emission of Radiation Next Liquid Crystal Display Light-Emitting Diode Long-Edge Fed Go Back LVPS Low-Voltage Power Supply Magenta Multipurpose Feeder MROM Masked Read Only Memory...
Page 39: Diagnostic Information
7526 2. Diagnostic information Previous Start Next CAUTION Remove the power cord from the electrical outlet before you connect or disconnect any cable Go Back or electronic card or assembly for personal safety and to prevent damage to the printer. Use the service error code, user status message, user error message, symptom table, service checks, and diagnostic aids in this chapter to determine the corrective action necessary to repair a malfunctioning printer.
Page 40: Operator Panel And Menus
7526 Previous Operator panel and menus Operator panel The operator panel consists of these items: Next Go Back USB port Numeric keypad Home button Adjustable angle Stop button Start button Indicator touchscreen light Buttons, icons, and light description Button or light Function Display The display shows messages and pictures that communicate the status of the...
Page 41 7526 Previous Button or light Function USB direct port Insert a USB flash drive to send data to the printer. Insert a USB cable from a digital camera to print photos with a PictBridge- enabled digital camera. Numeric keypad Consists of the numbers 0–9, a backspace button, and a pound (#) button. Next Go Back Touch Select functions as a select button.
Page 42: Administrative Menu
7526 Previous Button or light Function Press to return to the previous screen. Note: This button is only active if it appears on the bottom right of the screen. Next Continue. Go Back Administrative Menu Note: Some menu items may not be available based on the printer model or the options installed. Touch Menu ( ) on the display to access these menus.
Page 43: Power-On Self Test (Post) Sequence
7526 Previous Power-on self test (POST) sequence When you turn the printer on, it performs a Power-On Self Test. Check for correct POST functioning of the base printer by observing the following: Next The LED turns on. The main fan turns on. The operator panel turns on.
Page 44: Symptom Tables
7526 Previous Symptom tables Multiple function printer (MFP) symptom table Next Symptom Action Close Front Door does not Go to “920.26—POST service check” on page 2-127. appear when door is open Go Back Dead printer Go to “Dead printer service check” on page 2-144.
Page 45 7526 Previous Symptom Action Vertical banding Go to “Print quality—vertical banding” on page 2-157. White gapping Go to “Print quality—white gapping” on page 4-157. Small font text looks fuzzy around the Check the flatbed air filter. If noticeable dirt or particles are on edges the filter, replace the filter.
Page 46: User Status And Attendance Messages
7526 Previous User status and attendance messages Error code Action Next Close Front Door If you continuously get this error, then either 24 V interlock switch or 5 V interlock switch is bad. Go to “5 V interlock switch service check” on page 2-134 “24 V interlock switch removal”...
Page 47 7526 Previous Error code Action Load Manual <size> If paper loaded is in the manual feeder, the job continues. If paper is not in the feeder, touching Select indicates to the printer it should search for a source with the proper size. Additional messages may include: Next •...
Page 48 7526 Previous Error code Action 3x through 8x attendance messages 31 Defective or Missing • Reseat the specified toner cartridge. <color> Cartridge Next • Inspect the smart chip card contacts (A) for damage, contamination or positioning error. If damaged, contact your next level of service. Go Back •...
Page 49 7526 Previous Error code Action 37 Insufficient memory • Touch Continue to print the portion of the job already stored and begin collating the rest to collate job of the job. • Cancel the current job. • If this does not fix the problem, replace the system board. See Next “System board removal”...
Page 50 7526 Previous Error code Action 53 Unformatted Flash • Touch Continue to clear the message and continue printing. • Format the flash memory before storing any resources on it. If the error message remains, replace the flash memory. • If this does not fix the problem, replace the system board. See Next “System board removal”...
Page 51 7526 Previous Error code Action 58 Too Many Flash Too many flash options are installed. To continue: Options 1. Turn off and unplug the printer. 2. Remove the excess flash memory. Next 3. Plug in the printer, and turn it on. If this does not fix the problem, replace the system board.
Page 52 7526 Previous Error code Action 80 Fuser Life Warning • Touch Continue to clear the message and continue printing. • Show Me, View Supplies, and Tell Me More displays additional information. • Order a replacement fuser. When print quality is reduced, install the new fuser using the instruction sheet that comes with the replacement fuser.
Page 53 7526 Previous Error code Action 82 Replace Waste • Replace the waste toner box using the instruction sheet that comes with the replacement Toner waste toner box. • Ensure that there is no interference between the waste toner box and the printer. •...
Page 54 7526 Previous Error code Action 84 <color> PC Unit • Scroll down the operator panel to see if the printer is showing that all four of the PC units Missing are missing. If so, check the HVPS cable between the system board and the HVPS. Ensure that the cable is not plugged in backwards on the HVPS.
Page 55 7526 Previous Error code Action • Show Me, View Supplies, and Tell Me More displays additional information. 88 <color> Cartridge • Replace the specified toner cartridge. • Touch Continue to clear the message and continue printing. Next • If the problem persists, replace the system board. See “System board removal”...
Page 56: Error Codes And Messages
7526 Previous Error codes and messages Error code Description Action Next 1xx service error codes 110.01–110.07 Mirror A mirror motor error has occurred. • POR the printer. Motor • If the error message persists, go to Go Back “110.xx— Mirror motor service check” on page 2-41.
Page 57 7526 Previous Error code Description Action 146.01–146.08 Duplex motor has failed. • POR the printer. Motor Error • If the error message persists, go to “146.xx, 148.xx—Motor (MPF/duplex) error service check” on page 2-53. Next 147.09–147.25 Aligner motor has failed. •...
Page 58 7526 Previous Error code Description Action 168.xx HCIT elevator motor error. • POR the printer. Motor Error • If the message persists, go to “168.xx—Motor (HCIT elevator) error service check” on page 2-63. Next 199.xx Unrecoverable RIP software error. • POR the printer. Software Error •...
Page 59 7526 Previous Error code Description Action 200.25 Input sensor is made when tray 1 is • Fan media, and stack flat in the tray or installed. multipurpose feeder. • Properly set media restraints in the paper tray. Possible causes: • If clearing a paper jam does not fix the problem, Next •...
Page 60 7526 Previous Error code Description Action 201.08 Exit sensor is never made. • Check for anything in the paper path that might cause the paper to jam. Possible causes: • The fuser exit sensor may not be functioning • Improper loading properly.
Page 61 7526 Previous Error code Description Action 202.02 Exit sensor is made when printer tries • Check for anything in the paper path that might to print from an idle state. cause the paper to jam. • The fuser exit sensor may not be functioning Possible causes: properly.
Page 62 7526 Previous Error code Description Action 203.09 During duplex printing retract, the exit • Check for anything in the paper path that might sensor is never made. cause the paper to jam. • The fuser exit sensor may not be functioning Possible causes: properly.
Page 63 7526 Previous Error code Description Action 230.21 Duplex motor stalled. • Check for anything in the duplex paper path that might cause the paper to jam. This includes the Possible causes: paper guides in tray 1. • Obstructed duplex path •...
Page 64 7526 Previous Error code Description Action 242.05 Tray 2 picked, but page failed to reach • Ensure proper media is set for the type of paper the option sensor in time. used in tray 2. • Fan media, and stack flat in tray 2. Possible causes: •...
Page 65 7526 Previous Error code Description Action 242.29 Tray 2 is not ready or missing while • Make sure that tray 2 is correctly inserted. printing. • If the problem persists, go to “242.29—Paper Jam service check” on page 2-78. Possible cause is paper tray 2 assembly failure: Next 243.02...
Page 66 7526 Previous Error code Description Action 243.17 Tray 3 detected a jam from idle. • Clear away anything in the paper path that might cause the media to jam. Possible causes: • If the problem persists, go to “243.17—Paper • Paper jam leaving page over Jam service check”...
Page 67 7526 Previous Error code Description Action 244.05 Tray 4 picked, but page failed to reach • Ensure proper media is set for the type of paper the option sensor in time. used in tray 4. • Fan media, and stack flat in tray 4. Possible causes: •...
Page 68 7526 Previous Error code Description Action 244.29 Tray 4 is not ready, or missing while • Make sure that tray 4 is correctly inserted. printing. • If the problem persists, go to “244.29—Paper Jam service check” on page 2-89. Possible cause is paper tray 4 assembly failure.
Page 69 7526 Previous Error code Description Action 245.17 Tray 5 detected a jam from idle. • Clear away anything in the paper path that might cause the paper to jam. Possible causes: • If the problem persists, go to “245.17—Paper • Paper jam leaves a page over the Jam service check”...
Page 70 7526 Previous Error code Description Action 290.02 Scanner ADF feed jam. • Remove all media present in the media path. • Check for obstructions in the media path. • If the problem persists, go to “290.01, 290.02— Scanner ADF pickup/feed jam service check” Next on page 2-95 290.10...
Page 71 7526 Previous Error code Description Action Scanner flatbed CCD carrier module Unlock the scanner flatbed CCD carrier module lock locked in home position. (scanner lock). Next Go Back 8xx service error messages 840.01 Scanner disabled Enable the Scanner: Scanner Error 1.
Page 72 7526 Previous Error code Description Action 843.04 Pic roller disengage failure POR the printer, and then an 843.02 error code Scanner Failure appears. Go to “843.01, 843.02—Scanner Failure service check” on page 2-101. Next 844.00 Front scan module output level error. Go to “844.xx—Scanner Error—scan module Scanner Error...
Page 73 7526 Previous Error code Description Action 902.01–902.99 Unrecoverable system software • POR the printer. Engine Software Error errors. • If the error message persists, replace the (except 902.59 and system board. See “System board removal” 902.60) on page 4-165. Next 902.59 RIP NVRAM MGR problem.
Page 74 7526 Previous Error code Description Action 920.07 Narrow media sensor not connected. • POR the printer. POST Error • If the error message persists, go to “920.07— POST error service check” on page 2-111. Next 920.08 Exit sensor not connected. •...
Page 75 7526 Previous Error code Description Action 920.20 Incompatible transfer module. • POR the printer. POST Error • If the error message persists, go to “920.15, 920.20—POST—Bad transfer module NVRAM data error service check” on Next page 2-118. 920.21 +24 V power supply failure. •...
Page 76 7526 Previous Error code Description Action 925.04 Blower has stalled. • POR the printer. Blower Error • If the error message persists, go to “925.02, 925.04, 925.06—Blower error service check” on page 2-130. Next 925.05 Fan has stalled. • POR the printer. Fan Error •...
Page 77 7526 Previous Error code Description Action 952.01–952.99 CRC error has occurred. This is Perform a POR to clear the error. NVRAM Error recoverable. 953.01–953.99 Operator panel assembly NVRAM • POR the printer. Next NVRAM Failure failure. • Replace the operator panel assembly if the error message persists.
Page 78 7526 Previous Error code Description Action 963.00–963.99 Memory failure. • POR the printer. Memory Failure • If the error message persists, replace the system board. See “System board removal” on page 4-165. Next 964.00–964,88 Download emulation CRC error. • POR the printer. Emulation Error •...
Page 79: Service Checks
7526 Previous Service checks 110.xx—Mirror motor service check Next Step Questions / actions View the Event Log: Replace the printhead. See Go to step 2. “Printhead removal, Go Back 1. Enter Diagnostics mode (press and hold 3 installation, and and 6, turn on the MFP, and release the adjustment”...
Page 80: Xx, 112.Xx, 113.Xx, And 114.Xx-Printhead Error Service Check
7526 111.xx, 112.xx, 113.xx, and 114.xx—Printhead error service check Previous Step Questions / actions View the Event Log: Replace the printhead. See Go to step 2. “Printhead removal, Next 1. Enter Diagnostics mode (press and hold 3 installation, and and 6, turn on the MFP, and release the adjustment”...
Page 81: Xx-Fuser Error Service Check
7526 120.xx—Fuser error service check Previous Step Questions / actions Check the input voltage switch on the back of Go to step 2. Set the switch for the the low-voltage power supply (LVPS). proper country voltage. Next Note: Some LVPS FRUs do not have a switch, and are switch automatically.
Page 82 7526 Previous Step Questions / actions Remove the rear frame cover. See Replace the fuser DC Go to step 6. “Rear 4-40. Check cable. See frame cover removal” on page “Fuser DC the cable in connector JFUSER1 (fuser DC cable removal” on cable) for proper connection to the system page 4-117.
Page 83 7526 Previous Step Questions / actions Check for the following continuity between the Go to step 9. Replace the fuser DC DC autoconnect and JFUSER1 on the system cable. See “Fuser DC board. cable removal” on page 4-117. Next DC auto- JFUSER1 connect Pin 9...
Page 84: Xx, 920.02-Autocomp (Tray 1) Motor Error Service Check
7526 140.xx, 920.02—Autocomp (tray 1) motor error service check Previous Step Questions / actions 1. Turn the printer off. Replace the paper pick Go to step 2. mechanism. See “Paper 2. Remove the rear frame cover. See Next “Rear pick mechanism frame cover removal”...
Page 85: Xx, 906.01-906.04-Motor (Fuser) Error Service Check
7526 142.xx, 906.01–906.04—Motor (fuser) error service check Previous Step Questions / actions Turn the printer off, and then remove the rear Replace the cartridge Go to step 2. frame cover. See motor1/fuser motor cable. “Rear frame cover Next 4-40. Check the cables in removal”...
Page 86: Xx-Motor (Ep Drive Assembly Top Cartridge) Error Service Check
7526 Previous Step Questions / actions Measure the resistance across fuse F6 on the Replace the system board. Replace the EP drive system board. assembly. See “System board removal” on page 4-165. “Electrophotographic (EP) drive assembly Next removal” on page 4-89.
Page 87 7526 Previous Step Questions / actions Remove the right cover. See Replace the cartridge Go to step 3. “Right cover 4-41. Check the cartridge motor 1/fuser motor cable. removal” on page motor 1/fuser motor cable for proper “Cartridge motor 1/ connection to the EP drive assembly, for fuser cable removal”...
Page 88: Xx-Motor (Ep Drive Assembly Middle Cartridge) Error Service Check
7526 144.xx—Motor (EP drive assembly middle cartridge) error service check Previous Step Questions / actions 1. Turn the printer off. Replace cartridge motor 2/ Go to step 2. 3 cable. See “Cartridge 2. Remove the rear frame cover. See Next “Rear motor 2/3 cable removal”...
Page 89: Xx-Motor (Ep Drive Assembly Bottom Cartridge) Error Service Check
7526 Previous Step Questions / actions Measure the resistance across fuse F9 on the Replace the system board. Replace the EP drive system board. assembly. See “System board removal” on page 4-165. “Electrophotographic (EP) drive assembly Next removal” on page 4-89..
Page 90 7526 Previous Step Questions / actions Check the cartridge motor 2/3 cable for Replace the cartridge Go to step 3. proper connection to the EP drive assembly, motor 2/3 cable. See pinch points for the cable, and damage to the “Cartridge motor 2/3 cable or connector (A).
Page 91: Xx, 148.Xx-Motor (Mpf/Duplex) Error Service Check
7526 146.xx, 148.xx—Motor (MPF/duplex) error service check Previous Step Questions / actions Remove the front access cover assembly. Replace the front door Go to step 2. assembly. See “Front access cover assembly “Front Next removal. door assembly removal” on page 4-103.
Page 92 7526 Previous Step Questions / actions Remove the right cover. See Replace the MPF/duplex Go to step 5. “Right cover 4-41. Check the MP motor cable. See removal” on page feeder/duplex motor cable for proper “Multipurpose feeder connection to the MPF/duplex motor, pinch (MPF)/duplex motor Next points for the cable, and damage to the cable...
Page 93: Xx, 920.01-Motor (Aligner) Error Service Check
7526 147.xx, 920.01—Motor (aligner) error service check Previous Step Questions / actions 1. Turn the printer off. Replace the paper pick Go to step 2. mechanism. See “Paper 2. Remove the rear frame cover. See Next “Rear pick mechanism frame cover removal” on page 4-40.
Page 94: Xx-Cam Motor Error Service Check
7526 155.xx—Cam motor error service check Previous Step Questions / actions Turn the printer off, and then remove the rear Replace the motor driver Go to step 2. frame cover. See cable. See “Rear frame cover “Motor driver Next 4-40. Check the motor removal”...
Page 95 7526 Previous Step Questions / actions Check the transport motor cable (A) from the Replace the transport Go to step 4. cam motor to the motor driver card (B) for motor cable. See poor connections or damage. “Transport cable removal” on page 4-193.
Page 96: Xx-Cod (Color On Demand) Motor Error Service Check
7526 156.xx—COD (Color On Demand) motor error service check Previous Step Questions / actions Turn the printer off, and then remove the rear Replace the COD Go to step 2. frame cover. See assembly. See “Rear frame cover “Color on Next 4-40.
Page 97: Xx, 161.Xx-Motor Error (Option Tray 2) Service Check
7526 160.xx, 161.xx—Motor Error (option tray 2) service check Previous Step Questions / actions 1. Turn the printer off. Problem resolved. Go to step 2. 2. Reseat option tray 2. Next 3. Bring the printer up in Diagnostics Menu (turn the multifunction printer off, press and hold 3 and 6, turn the MFP on, and Go Back then release the buttons when the...
Page 98: Xx, 163.Xx-Motor (Option Tray 3) Error Service Check
7526 162.xx, 163.xx—Motor (option tray 3) error service check Previous Step Questions / actions 1. Turn the printer off. Problem resolved. Go to step 2. 2. Reseat option tray 3. Next 3. Bring the printer up in Diagnostics Menu (turn the multifunction printer off, press and hold 3 and 6, turn the MFP on, and Go Back then release the buttons when the...
Page 99: Xx, 165.Xx-Motor Error (Option Tray 4) Service Check
7526 164.xx, 165.xx—Motor Error (option tray 4) service check Previous Step Questions / actions 1. Turn the printer off. Problem resolved. Go to step 2. 2. Reseat option tray 4. Next 3. Bring the printer up in Diagnostics Menu (turn the multifunction printer off, press and hold 3 and 6, turn the MFP on, and Go Back then release the buttons when the...
Page 100: Xx, 167.Xx-Motor Error (Option Tray 5) Service Check
7526 166.xx, 167.xx—Motor Error (option tray 5) service check Previous Step Questions / actions 1. Turn the printer off. Problem resolved. Go to step 2. 2. Reseat option tray 5. Next 3. Bring the printer up in Diagnostics Menu (turn the multifunction printer off, press and hold 3 and 6, turn the MFP on, and Go Back then release the buttons when the...
Page 101: Xx-Motor (Hcit Elevator) Error Service Check
7526 168.xx—Motor (HCIT elevator) error service check Previous Step Questions / actions Is the paper properly loaded in the high- Go to step 2. Fan the media, and then capacity input tray (HCIT)? stack flat in the HCIT Next drawer. 1.
Page 102: 250.03-Paper Jam Error Service Check
7526 200.11, 250.03—Paper Jam error service check Previous Step Questions / actions Open the front access door. Turn the Go to step 2. Replace the transport belt. transport belt gear clockwise. “Transfer module Next removal” on page 4-191. Go Back Did the transport belt move? 1.
Page 103: 201.31-Paper Jam Error Service Check
7526 201.06, 201.31—Paper Jam error service check Previous Step Questions / actions Open the front access door. Turn the Go to step 2. Replace the transport belt. transport belt gear clockwise. “Transfer module Next removal” on page 4-191. Go Back Did the transport belt move? Bring the printer up in Diagnostics Menu (turn Go to step 3.
Page 104 7526 Previous Step Questions / actions Remove the rear frame cover. See Replace the fuser DC Go to step 7. “Rear cable. See frame cover removal” on page 4-40. “Fuser DC cable removal” on Check the fuser DC cable in the connector page 4-117.
Page 105 7526 Previous Step Questions / actions Place a voltmeter between the fuser DC Go to step 9. Replace the fuser DC autoconnect pin 8 and ground (pin 6). cable. See “Fuser DC cable removal” on page 4-117. Next Go Back Does the meter read +5 V dc? 1.
Page 106: Paper Jam Error Service Check
7526 203.09—Paper Jam error service check Previous Step Questions / actions Open the front access door. Turn the Go to step 2. Replace the transport belt. transport belt gear clockwise. “Transfer module Next removal” on page 4-191. Go Back Did the transport belt move? Turn the printer off, and then remove the Replace the fuser.
Page 107 7526 Previous Step Questions / actions Remove the rear frame cover. See Replace the fuser DC Go to step 6. “Rear cable. See frame cover removal” on page 4-40. “Fuser DC cable removal” on Check the fuser DC cable in the connector page 4-117.
Page 108: 230.05-Paper Jam Error Service Check
7526 Previous Step Questions / actions 1. Replace the fuser. Problem resolved. Replace the system board. 2. Bring the printer up in the Diagnostics “System board menu (turn off the printer, press and hold removal” on page 4-165. 3 and 6, turn on the printer.) Next 3.
Page 109 7526 Previous Step Questions / actions Measure the resistance across fuse F13 on Replace the system board. Go to step 4. the system board. “System board removal” on page 4-165. Next Go Back JBIN1 JFUSER1 JHVPS1 JBLW1 JSB1 JFAN1 JBOR1 JMIRR1 JOPP1 JCVR1...
Page 110: Paper Jam Error Service Check
7526 242.02—Paper Jam error service check Previous Step Questions / actions Has paper been fed from an input option Go to step 4. Go to step 2. before? Next 1. Turn the printer off. Replace the option cable. Go to step 3. 2.
Page 111: 242.11-Paper Jam Service Check
7526 242.03, 242.11—Paper Jam service check Previous Step Questions / actions 1. Bring the printer up in Diagnostics Menu Problem resolved. Go to step 2. (turn the multifunction printer off, press Next and hold 3 and 6, turn the MFP on, and then release the buttons when the progress bar displays).
Page 112: Paper Jam Service Check
7526 242.05—Paper Jam service check Previous Step Questions / actions Has the paper been fed from an input option Go to step 5. Go to step 2. before? Next 1. Bring the printer up in Diagnostics Menu Problem resolved. Go to step 3. (turn the multifunction printer off, press and hold 3 and 6, turn the MFP on, and Go Back...
Page 113: Paper Jam Service Check
7526 Previous Step Questions / actions Carefully lift the printer off the option, and lay Replace the option cable. Go to step 5. the printer on its back. “Option cable removal” on page 4-135. Check the option connector for damage. Next Go Back Is the connector damaged?
Page 114: Paper Jam Service Check
7526 242.17—Paper Jam service check Previous Step Questions / actions Has paper been fed from an input option Go to step 4. Go to step 2. before? Next Turn the printer off, and then remove the rear Replace the option cable. Go to step 3.
Page 115: Paper Jam Service Check
7526 242.26—Paper Jam service check Previous Step Questions / actions 1. Determine the input tray. Touch Problem resolved. Go to step 2 Menus ( )—Paper Menu—Default Next Source. 2. Bring the printer up in Diagnostics Menu (turn the multifunction printer off, press and hold 3 and 6, turn the MFP on, and Go Back then release the buttons when the...
Page 116: Paper Jam Service Check
7526 242.29—Paper Jam service check Previous Step Questions / actions Bring the printer up in Diagnostics Menu (turn Problem resolved Go to step 2. the multifunction printer off, press and hold 3 Next and 6, turn the MFP on, and then release the buttons when the progress bar displays).
Page 117: 243.11-Paper Jam Service Check
7526 Previous Step Questions / actions Carefully lift the printer off the option, and lay Replace the option cable. Go to step 4. the printer on its back. “Option cable removal” on page 4-135. Check the option connector for damage. Next Go Back Is the connector damaged?
Page 118: Paper Jam Service Check
7526 243.05—Paper Jam service check Previous Step Questions / actions Has paper been fed from an input option Go to step 5. Go to step 2. before? Next 1. Bring the printer up in Diagnostics Menu Problem resolved. Go to step 3. (turn the multifunction printer off, press and hold 3 and 6, turn the MFP on, and Go Back...
Page 119: Paper Jam Service Check
7526 Previous Step Questions / actions Carefully lift the printer off the option, and lay Replace the option cable. Go to step 5. the printer on its back. “Option cable removal” on page 4-135. Check the option connector for damage. Next Go Back Is the connector damaged?
Page 120: Paper Jam Service Check
7526 243.17—Paper Jam service check Previous Step Questions / actions Has paper been fed from an input option Go to step 4. Go to step 2. before? Next Turn the printer off, and then remove the rear Replace the option cable. Go to step 3.
Page 121: Paper Jam Service Check
7526 243.26—Paper Jam service check Previous Step Questions / actions 1. Determine the input tray. Problem resolved Go to step 2. 2. Bring the printer up in Diagnostics Menu Next (turn the multifunction printer off, press and hold 3 and 6, turn the MFP on, and then release the buttons when the progress bar displays).
Page 122: Paper Jam Service Check
7526 244.02—Paper Jam service check Previous Step Questions / actions Has paper been fed from an input option Go to step 4. Go to step 2. before? Next 1. Turn the printer off. Replace the option cable. Go to step 3. 2.
Page 123: 244.11-Paper Jam Service Check
7526 244.03, 244.11—Paper Jam service check Previous Step Questions / actions 1. Bring the printer up in Diagnostics Menu Problem resolved. Go to step 2. (turn the multifunction printer off, press Next and hold 3 and 6, turn the MFP on, and then release the buttons when the progress bar displays).
Page 124: Paper Jam Service Check
7526 244.05—Paper Jam service check Previous Step Questions / actions Has paper been fed from an input option Go to step 5. Go to step 2. before? Next 1. Bring the printer up in Diagnostics Menu Problem resolved. Go to step 3. (turn the multifunction printer off, press and hold 3 and 6, turn the MFP on, and Go Back...
Page 125: Paper Jam Service Check
7526 Previous Step Questions / actions Carefully lift the printer off the option, and lay Replace the option cable. Go to step 5. the printer on its back. “Option cable removal” on page 4-135. Check the option connector for damage. Next Go Back Is the connector damaged?
Page 126: Paper Jam Service Check
7526 244.17—Paper Jam service check Previous Step Questions / actions Has paper been fed from an input option Go to step 4. Go to step 2. before? Next Turn the printer off, and then remove the rear Replace the option cable. Go to step 3.
Page 127: Paper Jam Service Check
7526 244.26—Paper Jam service check Previous Step Questions / actions 1. Determine the input tray. Problem resolved Go to step 2. 2. Bring the printer up in Diagnostics Menu Next (turn the multifunction printer off, press and hold 3 and 6, turn the MFP on, and then release the buttons when the progress bar displays).
Page 128: Paper Jam Service Check
7526 245.02—Paper Jam service check Previous Step Questions / actions Has paper been fed from an input option Go to step 4. Go to step 2. before? Next 1. Turn the printer off. Replace the option cable. Go to step 3. 2.
Page 129: 245.11-Paper Jam Service Check
7526 245.03, 245.11—Paper Jam service check Previous Step Questions / actions 1. ring the printer up in Diagnostics Menu Problem resolved. Go to step 2. (turn the multifunction printer off, press Next and hold 3 and 6, turn the MFP on, and then release the buttons when the progress bar displays).
Page 130: Paper Jam Service Check
7526 245.05—Paper Jam service check Previous Step Questions / actions Has paper been fed from an input option Go to step 5. Go to step 2. before? Next 1. Bring the printer up in Diagnostics Menu Problem resolved. Go to step 3. (turn the multifunction printer off, press and hold 3 and 6, turn the MFP on, and Go Back...
Page 131: Paper Jam Service Check
7526 Previous Step Questions / actions Carefully lift the printer off the option, and lay Replace the option cable. Go to step 5. the printer on its back. “Option cable removal” on page 4-135. Check the option connector for damage. Next Go Back Is the connector damaged?
Page 132: Paper Jam Service Check
7526 245.17—Paper Jam service check Previous Step Questions / actions Has paper been fed from an input option Go to step 4. Go to step 2. before? Next Turn the printer off, and then remove the rear Replace the option cable. Go to step 3.
Page 133: Paper Jam Service Check
7526 245.29—Paper Jam service check Previous Step Questions / actions 1. Bring the printer up in Diagnostics Menu Problem resolved. Go to step 2. (turn the multifunction printer off, press Next and hold 3 and 6, turn the MFP on, and then release the buttons when the progress bar displays).
Page 134: Scanner Adf Cover Open Jam Service Check
7526 Previous Step Questions / actions 1. Remove the ADF motor side cover. See Replace the front case Reseat the cable. assembly. See “ADF motor side cover removal” on “ADF case page 4-232. assembly removal” on 2. Remove the ADF front side cover. See page 4-251.
Page 135 7526 Previous Step Questions / actions Check the covers where the ADF top cover Replace the damaged Go to step 4. latches (A) hook. cover. For the ADF motor side cover, see “ADF motor side cover Next removal” on page 4-232.
Page 136 7526 Previous Step Questions / actions Check for proper ADF grounding. Go to step 6. Replace the steel discharge brush. See 1. Remove the ADF upper case cover. See “ESD brush removal” on “ADF upper case cover removal” on page 4-269.
Page 137: Flatbed Cover Open Jam Service Check
7526 Previous Step Questions / actions Remove the ADF motor side cover. Check the Go to step 8. Replace the cable. cabling (ADF front assembly to scanner ICC card) (A). Next Go Back Is the cable damaged? Remove the left cover. See Replace the ICC card.
Page 138: Xx-Scanner Failure-Communication Failure Service Check
7526 842.xx—Scanner Failure—Communication failure service check Previous Step Questions / actions 1. Check the scanner flex cable from the Go to step 2. Reseat the scanner flex scanner MDC card to the system board. cable. Next 2. Remove the left cover. See “Left cover removal”...
Page 139: 843.02-Scanner Failure Service Check
7526 843.01, 843.02—Scanner Failure service check Previous Step Questions / actions Check the ADF cable. Replace the ADF cable. Replace the ADF. See “ADF removal (entire)” Next 1. Remove the left cover. See “Left cover on page 4-248. removal” on page 4-23.
Page 140: Xx-Scanner Error-Scan Module Output Level Error Service Check
7526 844.xx—Scanner Error—scan module output level error service check Previous Step Questions / actions Check the flatbed lamp. Go to step 2. Replace the flatbed lamp. “Flatbed CCD lamp Next Is the lamp on brightly? assembly removal” on page 4-271. Remove the left cover.
Page 141: Xx-Front Calibration Strip Error Service Check
Note: Before troubleshooting, determine the operating system used when the error occured. If possible determine whether a PostScript or PCL file was sent to the device when the error occured. Ask the customer which Lexmark Solutions applications are installed on the device. Step Action and questions POR the device.
Page 142 7526 Previous Step Action and questions Check all the cables connected to the RIP board for Go to step 5. Go to step 4. proper connectivity. Are the cables properly connected? Next Properly connect the cables to the RIP board. Restart Go to step 5.
Page 143 7526 Previous Step Action and questions Install a Lexmark recommended memory option. Send Go to step 31. Problem a print job to the device. resolved. Does the 900.xx error reoccur? Next Is there a modem installed on the device? Go to step 17.
Page 144: Transfer Module Error Service Check
7526 Previous Step Action and questions Contact your next level of support. You will need the following information for them: • Exact 900.xx error digits and complete error message • Printed menu settings page Next • Printed network settings page •...
Page 145: 920.25-Transfer Module Missing Error Service Check
7526 Previous Step Questions / actions Make sure the printhead is connected to Go to step 4. Reseat the connector. connector JPH1 Remove the rear frame cover. See “Rear frame cover removal” on page 4-40. Next Go Back Is the printhead connected correctly? Has the printhead been recently replaced? Replace with a new part.
Page 146: Post Error Service Check
7526 Previous Step Questions / actions Turn the printer off, and then remove the rear Problem resolved. Go to step 3. frame cover. See “Rear frame cover removal” on page 4-40. Reseat the transport cable in connector Next JTPS1 (A). Go Back JFUSER1 JHVPS1...
Page 147: Post-Printhead Motor Not Connected Error Service Check
7526 Previous Step Questions / actions Remove the right cover. See Replace the cartridge Go to step 4. “Right cover 4-41. Check the cartridge motor1/fuser motor cable. removal” on page motor 1/fuser motor cable (A) for proper “Cartridge motor 1/ connection to the EP drive assembly, pinch fuser cable removal”...
Page 148 7526 Previous Step Questions / actions Check the cables in connectors JMIRR1 and Replace the printhead. See Go to step 3. JPH1 for pinch points and any other damage “Printhead removal, to the cables or connectors. installation, and adjustment” on Is the cable damaged? Next page...
Page 149: Post Error Service Check
7526 920.07—POST error service check Previous Step Questions / actions Turn the printer off, and then remove the rear Problem resolved. Go to step 2. frame cover. See “Rear frame cover Next removal” on page 4-40. Reseat the cable in connector JTRAY1. Go Back JBIN1 JFUSER1...
Page 150: Post-Four Toner Sensor Not Connected Error Service Check
7526 920.09—POST—Four toner sensor not connected error service check Previous Step Questions / actions Turn the printer off, and then remove the rear Problem resolved. Go to step 2. frame cover. See “Rear frame cover Next removal” on page 4-40. Reseat the cable in connector JHVPS1.
Page 151: Post-Three Toner Sensors Not Connected Error Service Check
7526 920.10—POST—Three toner sensors not connected error service check Previous Step Questions / actions Remove the left cover. See If one or two of the toner Go to step 2. “Left cover 4-23. Check all toner level level sensor are damaged: removal”...
Page 152: Post-Two Toner Sensors Not Connected Error Service Check
7526 920.11—POST—Two toner sensors not connected error service check Previous Step Questions / actions Remove the left cover. See If only one toner level Go to step 2. “Left cover 4-23. Check all toner level sensor is damaged: removal” on page Next sensor cables connected to the rear of the •...
Page 153: Post-One Sensor Not Connected Error Service Check
7526 920.12—POST—One sensor not connected error service check Previous Step Questions / actions Check all toner level sensor cables connected Replace the damaged Go to step 2. to the rear of the HVPS. sensor. See “Toner level Next sensor removal” on page 4-174.
Page 154 7526 Previous Step Questions / actions Remove the right cover. See Replace the cartridge Go to step 4. “Right cover motor 1/fuser cable. See removal” on page 4-41. “Cartridge motor 1/fuser Check for the cartridge 1/fuser motor cable for cable removal” on proper connection to the EP drive assembly, Next page...
Page 155: Post-Cartridge Motor 2 Not Connected Error Service Check
7526 920.14—POST—Cartridge motor 2 not connected error service check Previous Step Questions / actions Turn the printer off, and then remove the rear Problem resolved. Go to step 2. frame cover. See “Rear frame cover Next removal” on page 4-40. Reseat the cables in connector JCARTP2 (A) and JCARTS2 (B).
Page 156: 920.20-Post-Bad Transfer Module Nvram Data Error Service Check
7526 920.15, 920.20—POST—Bad transfer module NVRAM data error service check Previous Step Questions / actions Turn the printer off, and then remove the rear Problem resolved. Go to step 2. frame cover. See “Rear frame cover Next removal” on page 4-40.
Page 157: Post Error Service Check
7526 920.16—POST error service check Previous Step Questions / actions Turn the printer off, and then remove the rear Problem resolved. Go to step 2. frame cover. See “Rear frame cover Next removal” on page 4-40. Reseat the large printhead cable in connector JPH1.
Page 158: Post Error Service Check
7526 920.17—POST error service check Previous Step Questions / actions Turn the printer off, and then remove the rear Problem resolved. Go to step 2. frame cover. See “Rear frame cover Next removal” on page 4-40. Reseat the bin full sensor cable in connector JBIN1.
Page 159: Post-Cartridge Motor 3 Not Connected Error Service Check
7526 920.18—POST—Cartridge motor 3 not connected error service check Previous Step Questions / actions Turn the printer off and remove the rear frame Problem resolved. Go to step 2. cover. See “Rear frame cover removal” on Next page 4-40. Reseat the cables in connectors JCARTP2 and JCARTS2.
Page 160: Post-Transfer Module Stepper Motor Not Connected Error Service Check
7526 Previous Step Questions / actions Measure the resistance across the fuser F10 Replace the system board. Replace the EP drive on the system board. assembly. See “System board removal” on page 4-165. “Electrophotographic (EP) drive assembly Next removal” on page 4-89.
Page 161 7526 Previous Step Questions / actions Measure the resistance across fuses F12 and Replace the system board. Go to step 4. F13 on the system board. “System board removal” on page 4-165. Next Go Back Is either fuse blown? Check the transport motor cable for pinch Replace the transport Go to step 5.
Page 162: Post Error Service Check
7526 920.21—POST error service check Previous Step Questions / actions Check the input voltage switch on the back of Go to step 2. Set the switch for the the low-voltage power supply (LVPS). Some proper country voltage. Next power supplies do not have the switch, and automatically switch.
Page 163 7526 Previous Step Questions / actions Measure the resistance across fuses F5, F6, Replace the system board. Replace the low-voltage F7, F9, F10, F12, and F13 on the system power supply. See “System board “Low- board. removal” on page 4-165. voltage power supply (LVPS) removal”...
Page 164: Post Error Service Check
7526 920.23—POST error service check Previous Step Questions / actions Turn the printer off, and then remove the rear Problem resolved. Go to step 2. frame cover. See “Rear frame cover Next removal” on page 4-40. Reseat the cable in connector JDX1. Go Back JBIN1 JFUSER1...
Page 165: Post Service Check
7526 Previous Step Questions / actions Replace the MPF/duplex motor assembly. Problem resolved. Replace the system board. “System board removal” on “System board page 4-165. removal” on page 4-165. Does the error clear? Next 920.26—POST service check Go Back Step Questions / actions Open the top access cover.
Page 166: 920.28, 920.29-Post (Power On Self Test) Service Check
7526 Previous Step Questions / actions 1. Disconnect the cable in connector JFDS1. Replace the top cover Replace the system board. sensor. 2. Connect the new top cover sensor. “System board removal” on page 4-165. 3. Bring the printer up in the Diagnostics menu (turn off the printer, press and hold Next 3 and 6, turn on the printer.)
Page 167: 925.03, 925.05-Fan Error Service Check
7526 925.01, 925.03, 925.05—Fan error service check Previous Step Questions / actions Turn the printer off, and then remove the rear Replace the fan. See Go to step 2. frame cover. See “Rear frame cover “Cooling fan removal” on Next removal”...
Page 168: 925.04, 925.06-Blower Error Service Check
7526 925.02, 925.04, 925.06—Blower error service check Previous Step Questions / actions Turn the printer off, and remove the rear Replace the blower. See Go to step 2. frame cover. See “Rear frame cover “Cartridge cooling fan Next removal” on page 4-40.
Page 169: Xx, 947.Xx-Transfer Roll Error Service Check
7526 945.xx, 947.xx—Transfer roll error service check Previous Step Questions / actions Replace the transfer module. See Problem resolved. Replace the original “Transfer 4-191. POR the transfer module. module removal” on page Next printer. Go to step 2. Did the error clear? Go Back Turn the printer off, and then remove the rear Replace the HVPS cable.
Page 170 7526 Previous Step Questions / actions Remove the HVPS. See Go to step 5. Replace the transfer “High-voltage contact assembly. power supply (HVPS) removal” on 4-120. Check for continuity between the page contacts (yellow1 and yellow2, cyan1 and Next cyan2, magenta1 and magenta2, or black1 and black2) on the transfer contact assembly.
Page 171: 950.29-Eprom Mismatch Failure
7526 950.00–950.29—EPROM mismatch failure Previous Warning: When replacing any one of the following components: • Scanner MDC card or flatbed scanner • System board Next Replace only one component at a time or the MFP will be rendered inoperable. Replace the required component, and bring the MFP up in Diagnostic Menu (see “Accessing test and diagnostic procedure menus”...
Page 172: Xx-System Board Failure Service Check
7526 956.xx—System board failure service check Previous Step Questions / actions Turn the printer off, and remove the rear Replace the system board. Reseat the cable. frame cover. See “Rear frame cover “System board Next removal” on page 4-40. removal” on page 4-165.
Page 173 7526 Previous Step Questions / actions Turn the printer off, and remove the rear Replace the 5 V interlock Go to step 3. frame cover. See switch. See “Rear frame cover “5 V interlock removal” on page 4-40. switch cable removal” on page 4-52.
Page 174: Interlock Switch Removal
7526 24 V interlock switch removal Previous Step Questions / actions Is the 24 V switch damaged? Replace the 24 V interlock Go to step 2. switch. See “24 V Next interlock switch removal” on page 4-54. Go Back Turn the printer off, and remove the rear Replace the 24 V interlock Go to step 3.
Page 175: Adf Exit Sensor Service Check
7526 ADF exit sensor service check Previous Step Questions / actions Make sure the mirror is clean: Go to step 2. Slightly dampen a soft, lint- free cloth with water, and Next 1. Turn the printer off. clean the mirror. 2.
Page 176: Adf Input Sensor Service Check
7526 ADF input sensor service check Previous Step Questions / actions 1. Turn the printer off. Replace the ADF case Go to step 2. assembly. See “ADF case 2. Open the ADF front cover. Next assembly removal” on page 4-251. Go Back Is the flag (A) damaged? 1.
Page 177: Adf Jam Sensor Service Check
7526 ADF jam sensor service check Previous Step Questions / actions 1. Turn the printer off. Replace the ADF case Go to step 2. assembly. See “ADF case 2. Open the ADF front cover. Next assembly removal” on 3. Turn the wheel. page 4-251.
Page 178: Adf Skew Sensor Service Check
7526 ADF skew sensor service check Previous Step Questions / actions 1. Turn the printer off. Replace the ADF case Go to step 2. assembly. See “ADF case 2. Open the ADF front cover. See Next “ADF assembly removal” on front cover removal”...
Page 179: Adf Scanning Sensor Service Check
7526 ADF scanning sensor service check Previous Step Questions / actions Remove the ADF motor side cover. See Replace the ADF. See Reseat connector. “ADF motor side cover removal” on “ADF removal (entire)” Next page 4-232. on page 4-248. Go Back Are the connectors seated correctly? Bubble sensor service check Step...
Page 180 7526 Previous Step Questions / actions Remove the rear frame cover. See Replace the fuser DC Go to step 3. “Rear cable. See frame cover removal” on page 4-40. “Fuser DC cable removal” on Check the fuser DC cable in connector page 4-117.
Page 181 7526 Previous Step Questions / actions 1. Replace the fuser. Problem resolved. Replace the system board. 2. Bring the printer up in the Diagnostics “System board menu (turn off the printer, press and hold removal” on page 4-165. 3 and 6, turn on the printer.) Next 3.
Page 182: Dead Printer Service Check
7526 Dead printer service check Previous A dead printer is a condition where the display is blank, the LED on the operator panel is off, no fans turn, no motors turn, and the fuser lamp does not come on. If a 550-sheet option assembly is installed, remove the option, and check the base printer for correct operation. Next If the base printer operates correctly, replace the 550-sheet option assembly.
Page 183: Exit Sensor Service Check
7526 Previous Step Questions / actions 1. Turn the printer off. Contact your next level of Go to step 7. support. Replace the faulty 2. Disconnect cables J5, JCARTS1. part. JCARTS2, JDVR1, JFDPCK1, JFUSER1, JINT1, JOPT1, and JTLB%1. Next 3. Connect the JLVPS2 cable to the system board.
Page 184 7526 Previous Step Questions / actions Place a voltmeter between the fuser DC Go to step 6. Go to step 5. autoconnect pin 8 and ground (pin 6). Next Go Back Does the meter rear +5 V dc? Place a voltmeter between the connector Go to step 6.
Page 185: Input Sensor Service Check
7526 Input sensor service check Previous Step Questions / actions Is the input sensor flag damaged? Replace the paper pick Go to step 2. mechanism. See “Paper Next pick mechanism assembly removal” on page 4-137. Go Back Turn the printer off, and then remove the rear Replace the paper pick Go to step 3.
Page 186: Networking Service Check
Next interference. Have the network administrator verify that the device is using the correct SSID, and wireless security protocols. For more network troubleshooting information, consult the Lexmark Network Setup Guide. Go Back Step...
Page 187: Operator Panel Service Check
7526 Previous Step Questions / actions Try using a different ethernet cable. Problem resolved. Go to step 14. Did this remedy the situation? Have the network administrator check the Replace the system board. Contact the network Next network drop for activity. administrator.
Page 188 7526 Operator panel display blank, five beeps, and LED is off Previous Service tip: The printer has detected a problem with the system board, the operator panel assembly cable (part of the top cover access assembly), or the operator panel assembly if POST does not complete. The printer emits five beeps, and then sticks in a continuous pattern until the printer is turned off.
Page 189: Print Quality Service Check
7526 Operator panel display all diamonds, five beeps Previous Step Questions / actions Check the operator panel assembly cable. Replace the top access Go to step 2. cover assembly. See “Top Next Is the cable damaged? access cover assembly removal” on page 4-43.
Page 190 Print quality—background Previous Service tip: Some background problems can be caused by rough papers, non-Lexmark toner cartridges or if the media texture is set to the rough setting. Some slick or coated papers may also cause background problems. Some problems occur with printers that run Next a large amount of graphics in a humid environment.
Page 191 7526 Print quality—blank page Previous Step Questions / actions Is all the packing material for the Go to step 2. Remove the packing photoconductor unit in question removed? material. Next Replace the photoconductor unit for the color Problem resolved. Go to step 3. in question.
Page 192 7526 Previous Step Questions / actions Turn off the printer and check the continuity of Go to step 7. Replace the cable the HVPS cable. assembly. Next Pin 23 Pin 1 Go Back Pin 24 Pin 23 Pin 2 Pin 24 Pin 2 Pin 1 Is there continuity?
Page 193 7526 Print quality—horizontal line Previous The photoconductor unit is defective. Replace the photoconductor unit. Print quality—insufficient fusing Next Step Questions / actions Is the fuser properly installed? Go to step 2. Install the fuser properly. Go Back Replace the fuser. See Problem resolved.
Page 194 7526 Print quality—residual image Previous Service tip: Install a new print cartridge if available before doing this service check. Residual image can be caused by the photoconductor, cleaning blade, and other parts inside the print cartridge. Next Step Questions / actions Is there any toner contamination on the fuser Replace the fuser.
Page 195 7526 Previous Step Questions / actions Turn the printer off, and then check the Go to step 4. Replace the cable continuity of the HVPS cable. assembly. Next Pin 23 Pin 1 Go Back Pin 24 Pin 23 Pin 2 Pin 24 Pin 2 Pin 1...
Page 196 7526 Previous Step Questions / actions 1. Check the metal contact on the left of the Replace the transfer Go to step 5. transfer module for any damage. module. See “Transfer 2. Check for any contamination, and clear any module removal” on contaminants with a piece of cloth.
Page 197: Diagnostic Aids
7526 3. Diagnostic aids Previous This chapter explains the tests and procedures to identify printer failures and verify repairs have corrected the problem. Next Accessing test and diagnostic procedure menus Go Back There are different test and diagnostic menus that can be accessed during POR to identify problems with the multiple function printer.
Page 198 7526 Network SE menu While in Network/Ports Menu (Menus—Network/ The Network SE menu contains Previous advanced network menu tools. Ports—Standard Network—STD NET SETUP), press and hold 9, 7, and 6. Next Go Back Fax SE menu From the HomePrime screen, press **411 SE menu From a browser, add “/se”...
Page 199: Diagnostics Menu
7526 Previous Diagnostics menu Diagnostics menu structure When the Diagnostics menu is entered, each item displays on the operator panel. When a diagnostic test is Next selected from the main menu, a sub menu displays and each individual test displays in the order shown. Any options that are referred to in the menus are displayed when the option is installed.
Page 200 7526 Previous MOTOR TESTS (order differs depending upon model) Align Motor Test “General motor tests procedures” on page 3-12. Cart 1 Cart 2 Cart 3 Next Go Back DUPLEX Transfer Belt Tray 1 PRINT TESTS Tray 1 “Input source tests” on page 3-13.
Page 201 7526 Previous PRINTER SETUP Defaults “Defaults” on page 3-23. Prt Color Page Count “Page Counts” on page 3-24. Prt Mono Page Count Perm Page Count Next Serial Number “Serial Number” on page 3-24. Engine Setting 1 through 4 “Engine Setting 1 through 4” on page 3-24.
Page 202: Registration
7526 Registration Previous Note: If you need to perform alignment or registration, see “Printhead alignment” on page 4-9. The following information is meant to explain the uses for the menu items. Next Print registration makes sure the black printing is properly aligned on the page. This is one of the steps in aligning a new printhead.
Page 203 7526 Print registration Previous To set print registration: Touch REGISTRATION from the Diag Menu. Touch Quick Test. Next The message Quick Test Printing… appears on the display. Note: Retain this page to determine the changes you need to make to the margin settings. Go Back Touch the green arrow next to the margin setting you need to change.
Page 204 7526 Quick Test Previous The Quick Test contains the following information: • Print registration settings Alignment diamonds at the left, right, top and bottom • Next Horizontal lines to check for skew • • General printer information, including current page count, installed memory, serial number, and code level. Go Back To print the Quick Test page: Note: Print the Quick Test Page on letter or A4 paper.
Page 205: Scanner Tests
7526 Scanner Tests Previous ASIC Test This test initiates a scan of the scanner ASIC memory. Next Touch SCANNER TESTS in Diag Menu. Touch ASIC Test. The results will be displayed as either ASIC Test Passed or ASIC Test Failed. Go Back To clear the results, press Stop ( Feed Test...
Page 206: Sensor Tests
7526 Sensor Tests Previous Tests to evaluate the scanner sensors in the ADF and the flatbed (FB). To view the sensor states: Touch SCANNER TESTS in Diag Menu. Next Touch Sensor Test. A screen similar to the one below will display. Go Back ADF Paper Present FB Cover Open...
Page 207: Alignment Menu
7526 Sensor Test descriptions (under Scanner Tests) Previous Sensor State Description Paper FB Long Legal paper is not present on the flatbed, or the scanner is not closed Legal paper is present on the flatbed, is covering the third length sensor, and the scanner cover is closed Next Paper ADF Long...
Page 208: Motor Tests
7526 Look at the coarse and fine adjustments on the top left of the page, and then enter the best number for the Previous top adjustment in the T space. Transfer this number over to the computation area for Z. On the touch panel, select Top Margin.
Page 209: Print Tests
7526 Previous Setup requirements Values in Motor test Notes Top cover Lower door menu position position Not applicable Closed* Reverse Multipurpose feeder—Remove the optional tray to avoid paper jams while Next performing this test. *If this test is run with the lower door open, perform the following actions in Go Back order to activate the motor power:...
Page 210 7526 To run the Print Test Page: Previous Touch PRINT TESTS from the Diag Menu. Select the media source by touching the green arrow next to one of the items below: Tray 1 Next Tray 2 (if installed) Tray 3 (if installed) Tray 4 (if installed) Go Back Tray 5 (if installed)
Page 211: Hardware Tests
7526 This test may be printed from either Configuration Menu or the Diagnostics Menu. To run the print quality pages Previous from the Diagnostics mode, select PRINT TESTS and Print Quality Pgs from the menu. Once the test is started, it cannot be canceled. When the test pages print, the printer returns to the original screen. To run the Print Quality Test Pages, select Prt Quality Pgs from PRINT TESTS, and then touch Back.
Page 212 7526 DRAM Test Previous This test checks the validity of DRAM, both standard and optional. The test writes patterns of data to DRAM to verify that each bit in memory can be set and read correctly. To run the DRAM Test: Next Touch DRAM Test from HARDWARE TESTS in Diag.
Page 213: Usb Hs Test Mode
7526 Any of the following explanations for a serial wrap test failure may display: Previous • Receive Status Interrupt Error Status Error • • Receive Data Interrupt Error Transmit Data Interrupt Error • Transmit Empty Error • Next Threshold Error •...
Page 214: Duplex Tests
7526 Duplex Tests Previous Quick Test (duplex) Note: Before you set the duplex top margin, be sure to set the skew and alignment. See “Printhead alignment” on page 4-9. Next This test prints a duplex version of the Quick Test that can be used to verify the correct placement of the top margin on the back side of a duplex page.
Page 215 7526 Print Test (duplex) Previous This test provides service personnel with a way to verify the function of the printer’s duplex hardware. After the user selects this test, the device automatically executes a continuous print test that generates a duplexed, color output page.
Page 216 7526 Top Margin (duplex) Previous This setting controls the offset between the first scan line on the front of the duplex page and the first scan line on the back of the page. Therefore, be sure to set the top margin in REGISTRATION before setting the duplex top margin.
Page 217: Sensor Tests
7526 Sensor Tests Previous There are two groups of sensors tests, static sensors and dynamic sensors. To run the Sensor Test: Next Touch SENSOR TESTS in Daig Menu. Select either Static Sensors or Dynamic Sensors. Sensor Tests Go Back Static Sensors Dynamic Sensors •...
Page 218: Printhead Tests
7526 Sensors (continued) Previous Sensor type Sensor name Possible values Sensor activation M Toner Open/Closed Remove the magenta toner cartridge. Shine a flashlight on the toner level sensor. The sensor should change state. Next C Toner Open/Closed Remove the cyan toner cartridge. Shine a flashlight on the toner level sensor.
Page 219: Printer Setup
7526 Disk Test/Clean Previous Warning: This test destroys all data on the disk and should not be attempted on a good disk. This test may run approximately 1½ hours depending on the disk size. To run the Disk Test/Clean Test: Next Touch DEVICE TESTS in the Daig Menu.
Page 220 7526 Page Counts Previous You can view, but not change any of the three counts displayed under PAGE COUNTS. The view the Prt Color Pg Count, the Prt Mono Pg Count, or the Perm Page Count: Touch PRINTER SETUP in Diag Menu. Next The Printer Color Pg Count, Prt Mono Pg Count, and then the Perm Page Count are displayed.
Page 221 7526 Configuration ID Previous The two configuration IDs are used to communicate information about certain areas of the printer that cannot be determined using hardware sensors. The configuration IDs are originally set at the factory when the printer is manufactured. However, the servicer may need to reset Configuration ID 1 or Configuration ID 2 whenever the system board is replaced.
Page 222: Ep Setup
7526 Reset color calibration (Reset Color Cal) Previous The Reset Color Cal enables the alignment of the color planes using pre-programed values. Automatic Color Adjust Calibration may be more effective. Touch PRINTER SETUP in the Diag Menu. Next Touch Reset Color Cal. Resetting displays.
Page 223: Reports
7526 Fuser temperature (Fuser Temp) Previous This adjustment can be used to help solve some customer problems with paper curl on low grade papers and problems with letterheads on some types of media. To adjust the fuser temperature: Next Touch EP SETUP from Diag Menu. Touch the left or right arrows beside Fuser Temp to toggle between Low, Normal, or High.
Page 224: Event Log
• Additional debug information in some cases • The printed event log can be faxed to Lexmark or your next level of support for verification or diagnosis. To print the event log: Touch EVENT LOG from Diag Menu. Touch Print Log.
Page 225: Exit Diagnostics
7526 Clear Log Previous Use Clear Log to remove the current information in the Event Log. This affects both the viewed log and the printed log information. Touch EVENT LOG in Diag Menu. Next Touch Clear Log. Touch YES to clear the Event Log or touch NO to exit the Clear Log menu. If YES is selected, Deleting EVENT LOG displays on the screen.
Page 226: Configuration Menu (Config Menu)
7526 Previous Configuration menu (CONFIG MENU) Available tests The tests display on the operator panel in the order shown. Not all menus appear, depending upon the Next configuration of your multiple function printer. For example, if you do not have a hard disk installed, then Disk Encryption and Wipe Disk will not appear.
Page 227: Reset Fuser Count
7526 Require Standby Previous “Require Standby” on page 3-46. LES Applications “LES Applications” on page 3-46. Key Repeat Initial Delay “Key Repeat Initial Delay” on page 3-46. Key Repeat Rate “Key Repeat Rate” on page 3-46. Clear Custom Status Next “Pel Blurring”...
Page 228: Color Lock Out
7526 Color Lock Out Previous Select On when printing for extended periods with only black toner. This saves the color toner cartridges (cyan, magenta, and yellow) and photoconductor units from excessive wear. In addition to setting the values, the cyan, magenta, and, yellow toner cartridges and their matching photoconductor units must be removed from the printer.
Page 229: Color Trapping
7526 Event Log Previous This menu item lets the system support person print a limited set of the information contained in the Diagnostics mode version of the printed Event Log. For a sample of a Diagnostics Menu Event Log printout, see “Event 3-28.
Page 230: Panel Menus
7526 Panel Menus Previous Lets the system support person lock users from Administrative menus. The Menu icon will not appear on the operator pane Selecting On (the default) prevents users from accessing menus. Off allows users to access the menus. The default value is set to On. Menus secured by password access are blocked, but the security access settings are retained if Panel Menus is set to On.
Page 231: Factory Defaults
7526 Factory Defaults Previous This menu item resets the majority of printer values back to their factory default settings. Warning: This selection cannot be reversed, so this operation should only be used as a last resort to fix any printer problem. Next When factory default settings are restored: •...
Page 232: Numpad Job Assist
7526 NumPad Job Assist Previous This setting determines whether or not a user can configure and initiate a job using the operator panel buttons. When this is set to On, a user can choose a function, such as copy, fax, or so forth, and then enter specific values for a limited number of settings and initiate the job with a series of key presses.
Page 233: Fax Storage Location
7526 Fax Storage Location Previous This setting only appears if a hard disk is installed. Selections are NAND or Disk. Touch Fax Storage Location on the Config Menu. Touch the left arrow or the right arrow to toggle between NAND and Disk. Next Touch Submit.
Page 234: Scanner Manual Registration
7526 Scanner Manual Registration Previous This item is used to manually register the flatbed and ADF on the MFP scanner unit. Registration should be performed whenever the ADF unit, flatbed unit, or controller card are replaced. To manually adjust the scanner: Next Touch Scanner Manual Registration.
Page 235 7526 Touch ADF Front. Previous ADF Front Horizontal Adjust Top Margin Next Adjust the Left Margin and/or the Top Margin to match the original. Go Back Selection Effect Horizontal Adjust • Decrease the value to move the margin to the left •...
Page 236: Disable Scanner
7526 Disable Scanner Previous If a scanner is not working, the scanner can be disabled, allowing the user to continue using the printer portion of the multiple function printer. Disable disables the entire scanner (ADF and flatbed), and then users attempting to use the scanner function receive Scanner disabled by administrator message.
Page 237: Enforce Color Order
7526 Enforce Color Order Previous This setting gives the system support person the ability to enforce where the color cartridges may be placed, and if messages appear when cartridges are in the wrong location. When On (default) is selected, the printer lets users place each toner cartridge in only its specified slot. For Next instance, the Magenta toner cartridge must be in the Magenta slot.
Page 238: Motor Calibration
7526 Motor Calibration Previous This setting synchronizes the aligner and fuser motor speeds with the transfer belt speed to ensure that the output is printed correctly. Note: This test should be run at 600 dpi resolution and with duplex disabled. Next To run the Motor Calibration: Touch Motor Calibration in the Config Menu.
Page 239: Action For Prompts
7526 To change the settings for Env Prompts: Previous Touch Envelope Prompts in the Config Menu. Touch the left or right arrow to toggle between Auto, Multi-Purpose Feeder, and Manual Envelope. Touch Submit. Submitting changes… is displayed. Next You are automatically returned to the Configuration main menu. Go Back Action for Prompts This setting gives the user the option of having the printer resolve change prompt situations without requiring...
Page 240: Disk Encryption
7526 Disk Encryption Previous Controls whether the printer encrypts the information that it writes to the hard disk. Warning: When the value for Disk Encryption, the printer completely formats the hard disk which means that all information on the disk is deleted. Next If an encrypted disk is removed from the printer and another disk is installed, the Disk Corrupted.
Page 241: Wipe Disk
7526 Touch Yes. Previous Warning: To prevent damage to your disk, do not turn the MFP off while the following displays. Next Encrypting Disk Go Back DO NOT POWER OFF Touch Back to return to the main menu. A graphic appears, showing: The message Encrypting Disk or Formatting Disk •...
Page 242: Font Sharpening
Touch the left or right arrow to toggle between On and Off. Touch Submit. LES Applications Enables or disables Lexmark Embedded Solutions (LES) applications. The default is Enable. To change the setting: Touch LES Applications in the Config Menu. Touch the left or right arrow to toggle between Enable and Disable.
Page 243: Clear Custom Status
7526 Clear Custom Status Previous Executing this operation erases any strings that have been defined by the user for the Default or Alternate custom messages. To clear custom strings: Next Touch Clear Custom Status in the Config Menu. Touch Clear Custom Status again to confirm. Go Back Clear Custom Status...
Page 244: Service Engineer (Se) Menu
From browser, add “/se” to device’s IP address (for example: http://123.456.7.8/se). Next Print SE Menus General Go Back Copyright Displays copyright information. Lexmark Forms Mode On or Off Code Revision Info Network Code Level Displays network code level. Network Compile Info Display network compile information.
Page 245: Front Cover Locked In Place
7526 Previous Front cover locked in place The front door locks during certain Busy events, and unlocks when those events are complete. This is a normal function. You can hear the door lock into place when one of these events take place. However, if the printer is turned off, or has an error while the front door is locked (for example, while printing or calibrating), the front door Next may not unlock.
Page 246 7526 Open the top cover. Previous Remove the screw (C) from the inside left cover. Next Go Back Press the waste toner release latch (D), swing the front of the waste toner assembly away from the printer, and remove. Remove the two screws (E). Press the locking tab (F), slide the cover down.
Page 247 7526 Grasp the side at the point shown, and disconnect the tab on the upper edge. Push down with your thumb Previous on the outside while pulling up with the fingers to remove the cover. Warning: Be careful not to damage the two small locking tabs (G). Next Go Back Lift the rear of the left cover out, and rotate it out of position toward the front.
Page 248: Printhead Verification
7526 Previous Printhead verification Before you begin, you can verify that the printhead is the failing FRU by following this procedure: Turn the printer off, remove the power cord from the outlet, then remove all cords and cables from the Next printer before beginning.
Page 249 7526 Remove the rear frame cover. Previous Loosen the eight screws (A). Lift the rear frame cover, and remove. Next Go Back Diagnostic aids 3-53...
Page 250 7526 If present, remove the hard disk. Previous Remove the two screws (B), and disconnect the hard disk from the system board (C). Next Go Back Pull the hard disk straight out to pop the hard disk standoffs free of the system board. Service Manual 3-54...
Page 251 7526 Carefully disconnect the printhead ribbon (D) and the mirror motor cables (E) from the system board, and Previous carefully connect the printhead ribbon and mirror motor cables from the new printhead into the system board. Next Go Back Diagnostic aids 3-55...
Page 252 7526 Use the packaging that came with the printhead FRU to prop the printhead up.. Previous Next Go Back Connect the power cord to the outlet. Enter the Diagnostics menu (press and 3 and 6, turn on the multifunction printer, and release the buttons when the progress bar appears).
Page 253: Paper Jams
7526 Previous Paper Jams Error jam locations The following illustration shows the location and error codes generated for specific paper jams and the Next corresponding locations of these jams. ADF and flatbed scanner Go Back Diagnostic aids 3-57...
Page 254 7526 Printer base Previous Next Go Back Service Manual 3-58...
Page 255: Clearing Jams
7526 Clearing jams Previous By carefully selecting paper and loading it properly, you can avoid most jams. If jams do occur, follow the steps outlined in this section. To clear a jam message and resume printing, clear the entire paper path, and then touch Continue.
Page 256 7526 Previous Message See: 24x Paper jam, check [area name] “24x paper jam” on page 3-67 24x Paper jam, [x] pages jammed 250 Paper jam, check [area name] “250 paper jam” on page 3-68 Next 250 Paper jam, [x] pages jammed 290 Scanner jam, remove all originals from the “290–294 paper jams”...
Page 257 7526 Pull the jammed paper up and out to remove it from behind the toner cartridge area. Previous Note: Make sure all paper fragments are removed. Next Go Back Close the lower front door. Close the upper front door. Touch Continue. 200–201 paper jams Open the upper front door.
Page 258 7526 201 paper jam Previous Open the upper front door, and then open the lower front door. Warning: Potential Damage—To avoid overexposing the photoconductors, do not leave the front doors open for more than 10 minutes. Next CAUTION—HOT SURFACE: The inside of the printer might be hot. To reduce the risk of injury from a hot component, allow the surface to cool before touching.
Page 259 7526 202 paper jam Previous If the paper is visible in the standard exit bin, then grasp the paper and pull it away from the bin. Next Go Back Paper jam under the fuser Open the upper front door, and then open the lower front door. Warning: Potential Damage—To avoid overexposing the photoconductors, do not leave the front doors open for more than 10 minutes.
Page 260 7526 Paper jam behind the fuser Previous Open the upper front door, and then open the lower front door. Warning: Potential Damage—To avoid overexposing the photoconductors, do not leave the front doors open for more than 10 minutes. Next CAUTION—HOT SURFACE: The inside of the printer might be hot.
Page 261 7526 203 paper jam Previous Grasp paper that is visible in the standard exit bin, and pull it away from the bin. Next Go Back Open the upper front door. CAUTION—HOT SURFACE: The inside of the printer might be hot. To reduce the risk of injury from a hot component, allow the surface to cool before touching.
Page 262 7526 Pull the jam straight up to remove it. Previous Next Go Back Pull out on the release tabs to allow the front door to split. Pull straight out to remove any jammed paper. Close the lower front door, and then close the upper front door. Reinsert Tray 1.
Page 263 7526 24x paper jam Previous Paper jammed in Tray 1 Open Tray 1, and then pull the jammed pages straight up and out. Next Go Back After removing the tray, the front door may need to be opened to access the jam. Close Tray 1.
Page 264 7526 Paper jammed in one of the optional trays Previous Open the specified tray, and then pull the jammed pages out. Next Go Back After removing the tray, the tray above may need to be opened to access the jam. Close the tray.
Page 265 7526 290–294 paper jams Previous Remove all original documents from the ADF. Open the ADF cover, and then remove any jammed paper. Next Go Back Close the ADF cover. Open the duplex cover, and then remove any jammed paper. Open the scanner cover, and then remove any jammed pages. Close the scanner cover.
Page 266 7526 Previous Next Go Back Service Manual 3-70...
Page 267: Repair Information
7526 4. Repair information Previous CAUTION—POTENTIAL INJURY: The printer weight is greater than 97 lbs (44kg), and requires three or more trained personnel to lift safety. Next Go Back Safety information The safety of this product is based on testing and approvals of the original design and specific •...
Page 268: Handling Esd-Sensitive Parts
7526 Previous Handling ESD-sensitive parts Many electronic products use parts that are known to be sensitive to electrostatic discharge (ESD). To prevent damage to ESD-sensitive parts, follow the instructions below in addition to all the usual precautions, such as turning off power before removing electronic cards: Next •...
Page 269: Screw And Retainer Identification Table
7526 Previous Screw and retainer identification table The following table contains screw types and retainers, locations, and quantities necessary to service the printer. Pay careful attention to each screw type location when doing removals. You must install the correct screw type in each location during reassembly. Next Sizes are as close to actual as possible, as long as the printout is not scaled or resized.
Page 270 7526 Screw identification table (continued) Previous Screw type Location 18B0832 Taptite M3 L6 5 V interlock switch to rightside frame PANHD Card support plate to upper plate Next Card support plate to lower plate Card support plate (and printhead ground) to leftside frame Card support plate to rightside frame Go Back Cartridge left guide assembly to leftside [late (interior side of plate...
Page 271 7526 Screw identification table (continued) Previous Screw type Location 18B1236 Plastite panhead ADF open sensor to ADF M3x6 CCD belt to flatbed Next Sliding rod Go Back 18B2302 Machine M2.6 MP feeder/duplex drive motor to rightside plate L3-3.5 18B2315 Machine M3 Printhead PANHD L35 27S2836...
Page 272 7526 Screw identification table (continued) Previous Screw type Location 88A0003 Machine M3X0.5- Printhead 6G 8L Next Go Back 88A0095 M2.5x10 Machine 5 V interlock switch actuator assembly 24 V interlock switch and shield to rightside frame 88A0133 Plastite M3x8 ADF front cover ADF handle cover ADF motor cover ADF upper front cover...
Page 273 7526 Screw identification table (continued) Previous Screw type Location 88A0234 Taptite M3x10 Motor assembly to ADF Next Go Back 88A0293 Plastite M2.2 L5 Contact spring cap to left guide assembly 88A0312 Plastite M2.9 L6 Backup springs to reference edge plate assembly Cartridge cooling fan duct to top cover Cartridge left guide assembly to leftside plate assembly (exterior side of plate assembly)
Page 274 7526 Screw identification table (continued) Previous Screw type Location 88A0324 M3.5X1.34 PANHD Door cap to door assembly EP drive to rightside plate Next Go Back 88A0412 M2.9x5.2 Plastite Door links to top access door cover Fuser retract link to top access door GS COD bellcranks to guide NGS COD bellcranks to guide Top cover links to top access door links...
Page 275: Adjustments
7526 Previous Adjustments Printhead alignment Next Overview When aligning the printhead, it is important to keep in mind that the printhead mounting screws should be initially loose enough to just hold the printhead in the printer. This allows the pages to be printed that will be used to Go Back align the black plane to the printer frame and also allows skew adjustment with the printhead alignment screw.
Page 276 7526 Remove the toner cartridges. Previous Loosen the printhead mounting screws (D). Next Go Back Reinstall the transfer module with the photoconductor units still attached. Reconnect the transfer module cable. Replace the toner cartridges. Close the front access door. Close the top access door. Connect the electrical cord into the printer.
Page 277 7526 Touch Quick Test. A page similar to this one prints: Previous Next Go Back Repair information 4-11...
Page 278 7526 Adjust the printhead alignment screw (F) to adjust the skew and straighten the image on the printout. Previous Next Go Back If the top right alignment marks are lower than the top left alignment marks, rotate the alignment screw counterclockwise a full revolution, and print the Quick Test page. Repeat adjusting the screw and printing the Quick Test page until the top alignment marks are the same distance from the top of the media.
Page 279 7526 When the top right and top left alignment marks are both showing and are even on the page, the Previous skew is aligned. Straight Skewed Next Go Back Tighten the printhead mounting screws. Turn off the printer. Disconnect the power cord from the electrical outlet. Disconnect the transfer module cable.
Page 280 7526 Registration (black) Previous Top Margin Reconnect the power cord to the electrical outlet, but do not turn on the printer yet. Enter Diagnostic mode (press and hold 3 and 6, turn on the printer, and release the buttons when the Next progress bar appears).
Page 281 7526 Bottom Margin Previous Adjust the bottom margin until the points of the bottom margin alignment marks are visible and touching the edge of the paper. Next Go Back The right arrow increases the value and moves the bottom alignment marks up the page. •...
Page 282 7526 Alignment (cyan, yellow, and magenta) Previous Touch Back until you reach the top menu, and touch Alignment Menu. Select Cyan. Cyan Next Top Margin Left Margin Go Back Right Margin Skew Quick Test Touch the left or right arrows to set Top Margin to zero. Do the same for Left Margin, Right Margin, Bottom Margin, Skew, and Bow.
Page 283 7526 Determine the line under Fine Adjustment that is closest. If the value is beyond the Fine Adjustment scale, Previous use either of the Coarse Adjustment scales. Next Go Back Enter the number determined from the Fine Adjustment scale or the Coarse Adjustment scales on the part of the page for the “T”...
Page 284 7526 Repeat this process for skew (Z). Don't forget to subtract the T value and add the current cyan Z value to Previous obtain the new skew (Z) value. An example is shown below: Next Go Back Continue to follow the directions on the bottom of the first page to find the Cyan Top Margin (T), the Skew (Z), and on the second page of the Quick Test page, the Left Margin (L), Right Margin (R), and Bow (P).
Page 285: Printer Removal Procedures
7526 Previous Printer removal procedures Precautions to take before maintenance work Do not implement any operation, removal, or modification and so on, which is not presented in this manual. Next Turn the printer power off and unplug the power cable from the outlet prior to starting removals or checks.
Page 286: Multifunction Printer Removals
7526 Previous Multifunction printer removals Front access cover assembly removal See Front access cover assembly for the part number for the models you need on Next page 7-3. Remove the paper tray. Disconnect the transfer module cable (A). Go Back Press the two tabs (B) to release the front access door cover assembly.
Page 287 7526 Looking down at the keyed end of the restraint (D), twist the end clockwise, slide the restraint upward Previous through the slit (E), and slip the end of the restraint through the keyed hole (F). Repeat for the other side. Next Go Back Repair information...
Page 288 7526 Close the front access door assembly. Previous Remove the two screws (G) that attach the pivot pin to the front access door cover assembly. Remove the bracket (H). Next Go Back Remove the front access cover assembly. Service Manual 4-22...
Page 289: Left Cover Removal
7526 Left cover removal Previous for the part number. “Left cover” on page 7-3 Remove the left cover with the left door cover attached. Next Remove the rear cover. See “Rear cover removal” on page 4-39. Remove the waste toner assembly. See “Waste toner assembly removal”...
Page 290 7526 Remove the two screws (B). Previous Press the locking tab (C), slide the cover down. Grasp the side at the point shown, and disconnect the tab on the upper edge. Push down with your thumb on the outside while pulling up with the fingers to remove the cover. Warning: Be careful not to damage the two small locking tabs (D).
Page 291: Left Door Cover Removal
7526 Left door cover removal Previous Open the left door cover. Lift up to disengage the hinges. Next Go Back Remove the left door cover. Repair information 4-25...
Page 292: Operator Panel Assembly Removal
7526 Operator panel assembly removal Previous for the part number. “Operator panel assembly, with card” on page 7-3 Remove the top access cover assembly. See “Top access cover assembly removal” on page 4-43. Place the top access assembly on a soft link-free cloth with the touchscreen facing down. Next Remove the six smaller screws (A) securing the position guide.
Page 293 7526 Remove the five larger screws (B) and the two smaller screws (C). Previous Next Go Back Repair information 4-27...
Page 294 7526 Lift the position guide, so you can access the cables. Previous Flip open the lock (D) on the wide ribbon cable, and remove the cable from the connector. Next Go Back Disconnect the display cable (E) by pulling it straight out. Service Manual 4-28...
Page 295 7526 Installation note: Inspect the display cable (A), and make sure that it is connected to the UICC card with its Previous white side facing the card as shown. Next Go Back Remove the screw (F) and disconnect the ground cable. Repair information 4-29...
Page 296 7526 Remove the position guide. Previous Next Go Back Turn the position guide cover over. Remove the bezel. See “Operator panel bezel removal” on page 4-32. Rotate the operator panel up, and gently pull the display ribbon cable to the back the through the toroid (G).
Page 297 7526 Remove four screws (H). Previous Note: Make sure to note the position of the ground cable (J) on the upper right. Next Go Back Remove the operator panel (touchscreen). Repair information 4-31...
Page 298: Operator Panel Bezel Removal
7526 Operator panel bezel removal Previous See Operator panel bezel on for the part number. page 7-3 Rotate the operator panel to its highest position. Using a flathead screwdriver or similar tool, unsnap the locking tabs on the upper left and the upper right of Next the bezel.
Page 299: Operator Panel Buttons Removal
7526 Operator panel buttons removal Previous Remove the top access cover assembly. See “Top access cover assembly removal” on page 4-43. Place the top access assembly on a soft link-free cloth with the touchscreen facing down. Remove the six smaller screws (A) securing the position guide. Next Go Back Repair information...
Page 300 7526 Remove the five larger screws (B) and the two smaller screws (C). Previous Next Go Back Service Manual 4-34...
Page 301 7526 Lift the position guide, so you can access the cables. Previous Flip open the lock (D) on the wide ribbon cable, and remove the cable from the connector. Next Go Back Disconnect the display cable (E) by pulling it straight out. Repair information 4-35...
Page 302 7526 Installation note: Inspect the display cable (A), and make sure that it is connected to the UICC card with its Previous white side facing the card as shown. Next Go Back Remove the screw (F) and disconnect the ground cable. Service Manual 4-36...
Page 303 7526 Remove the three screws (G) from the operator panel card. Previous Next Go Back Move the UICC card out of the way to access the buttons. Remove the button or buttons that you need to replace. Repair information 4-37...
Page 304: Output Bin Extension Cover Removal
7526 Output bin extension cover removal Previous for the part number. “Output bin extension cover” on page 7-3 Lift to remove the output bin extension cover. Next Go Back Service Manual 4-38...
Page 305: Rear Cover Removal
7526 Rear cover removal Previous Remove the four screws (A). Next Go Back Lift up to disengage the two tabs (B). Note: If you are removing the rear cover to access another part, leave the cooling fan filter in place, and you are done.
Page 306: Rear Frame Cover Removal
7526 Rear frame cover removal Previous for the part number. “Rear frame cover” on page 7-3 Loosen the eight screws (A). Lift the rear frame cover, and remove. Next Go Back Service Manual 4-40...
Page 307: Right Cover Removal
7526 Right cover removal Previous for the part number. “Right cover” on page 7-3 Remove the rear cover. See “Rear cover removal” on page 4-39. Open the top access cover. Next Open the front access cover. Remove the plastic screw on the front (A). Go Back Remove the two black screws on the front (B).
Page 308 7526 Remove the three screws (C). Previous Next Go Back Pull up on the rear of the right cover, and then press down at the indicated location to disengage the tab. Service Manual 4-42...
Page 309: Top Access Cover Assembly Removal
7526 Top access cover assembly removal Previous for the part number. “Top access cover assembly” on page 7-3 Note: If you are planning on installing the top cover assembly to fix the broken top cover spring mount (A), you can replace just the springs. Next Go Back to fasten the springs without having to replace the...
Page 310 7526 Open the three clips on the toroid to remove it from the USB cable. Previous Note: Be sure to re-install the toroid when the top access cover is replaced. Next Go Back Remove the cables through the openings (E) in the system board frame. Service Manual 4-44...
Page 311 7526 Remove the UICC cable from the two cable clamps (F), and the USB cable from the two clamps (G) above Previous the system board. Open the two clips on the toroid (H) on the UICC. Note: Be sure to retain the toroid, and reinstall it on the cable when you install the top access cover. Next Go Back Remove the cables through the frame, over the cartridge fan, through the cable clamps (J), and through...
Page 312 7526 Remove one screw (K) on the left side and two screws (L) on the right side, that secure the links. Previous Next Go Back Rotate the left and right pivots (M) until they are upright, and then remove them. Note: If you are removing the top access cover to access another part, leave the top access cover and the operator panel bezel attached, and you are done.
Page 313 7526 Installation notes: Previous On the right side—Place the spring in place to hook onto the pivot, and push the pivot back into place securing the spring on the pivot. • If the original rib on the right side where the spring was attached is broken off (B) or is no longer there (newer parts), make sure the spring is oriented so the spring bend is on the bottom (C).
Page 314: Top Cover Assembly Removal
7526 Top cover assembly removal Previous Remove the top access cover. See “Top access cover assembly removal” on page 4-43. Remove the flatbed scanner. See “Flatbed scanner removal” on page 4-279. Remove the LVPS. Note: Make sure you note the routing of the cable for reinstallation. The cable should pass through the Next cable restraint (A) Go Back...
Page 315 7526 Disconnect the cables in connectors JBIN1 (B), JFDS1 (C), and JFUSER1 (D), on the system board. Previous Remove the output bin sensor cable (A) and the feed through sensor cable (B) through the side of the frame (E). Next Go Back Remove the two screws (F), and disconnect the cooling fan.
Page 316 7526 Remove the six screws (G). Previous Next Go Back Remove the screw (H) in front. Service Manual 4-50...
Page 317 7526 Remove the ground screw (J) on the right side, and remove the ground cable from the cable restraint (K). Previous Next Go Back Note: If you need to replace the top cover FRU, continue with the next step to remove the separate output bin extension cover FRU.
Page 318: Interlock Switch Cable Removal
7526 5 V interlock switch cable removal Previous for the part number. “5 V interlock switch” on page 7-7 Remove the EP drive assembly. See “Electrophotographic (EP) drive assembly removal” on page 4-89. Next Disconnect the cable in connector at JINT1 (A) on the system board. Go Back Open the front access door cover, and remove the screw (B).
Page 319 7526 Remove the cable from the two cable retainers (C). Previous Next Go Back Remove the 5 V interlock switch and bracket from the printer. Remove the screw (D), and remove the 5 V interlock switch cable from the bracket. Repair information 4-53...
Page 320: Interlock Switch Removal
7526 24 V interlock switch removal Previous See for the part number. Remove the LVPS. See “24 V interlock switch” on page 7-7. Disconnect the connector at JCVR1 (A) at system board. Next Go Back Remove the screw (B), and the bracket separates from the 24 V interlock switch. Service Manual 4-54...
Page 321 7526 Installation notes: Previous Observe the routing of the 24 V interlock switch cable (A). Next Go Back Repair information 4-55...
Page 322: Auger Drive Removal
7526 Auger drive removal Previous 7-11for the part number. “Auger shaft and gear parts pack” on page Remove the paper pick mechanism assembly. See “Paper pick mechanism assembly removal” on page 4-137. Next Remove the left cover. See “Left cover removal” on page 4-23.
Page 323 7526 Release the locking tab (B) from the front, lower corner of the HVPS. Previous Next Go Back Lay the board to the left. Repair information 4-57...
Page 324 7526 Grasp the auger shaft (C) , and remove it. Previous Next Go Back Service Manual 4-58...
Page 325 7526 Make sure to remove the auger gear (D) on the other side. Previous Next Go Back Installation note: The auger gear needs to go onto the auger shaft as shown, with the flat surfaces going together. Repair information 4-59...
Page 326: Bin Full Sensor Assembly Removal
7526 Bin full sensor assembly removal Previous Remove the top cover assembly. See “Top cover assembly removal” on page 4-48. Remove the cable from the openings, including the loop through the frame (A). Press up on the tab (B) to remove the flag. Next Go Back Installation notes:...
Page 327: Cartridge Cooling Fan Removal
7526 Cartridge cooling fan removal Previous Remove the rear frame cover. See “Rear frame cover removal” on page 4-40. Disconnect JBLW1 (A). Next Go Back Open the three clips holding the toroid on the cable, and remove the toroid. Note: Retain the toroid to reinstall later. Remove the right cover.
Page 328 7526 Remove the two screws (C). Previous Next Go Back Remove the cartridge cooling fan. Service Manual 4-62...
Page 329: Cartridge Guide Wheel Removal
7526 Cartridge guide wheel removal Previous Right cartridge guide wheel Note: Only replace defective cartridge guide wheel(s). Next For yellow, cyan, or magenta: Remove the two screws (A) from the cartridge guide. Go Back Gently pull the cartridge guide, then remove the cartridge guide wheel (B). CAUTION: Do not pull too hard on the cartridge guide to avoid damage.
Page 330 7526 Installation note: Gently pull the cartridge guide, then use a long-nosed pliers to hold the cartridge Previous guide wheel in place when installing a new cartridge wheel. Next Go Back Installation note: Inspect carefully if the cartridge guide wheel is seated properly on the cartridge guide before reinstalling the screw on the cartridge guide.
Page 331 7526 Gently pull the cartridge guide, then remove the cartridge guide wheel (D). Previous CAUTION: Do not pull too hard on the cartridge guide to avoid damage. Next Go Back Installation note: Gently pull the cartridge guide, then use a long-nosed pliers to hold the cartridge guide wheel in place when installing a new cartridge guide wheel.
Page 332 7526 Left cartridge guide wheel Previous Note: Only replace defective cartridge guide wheel(s). For yellow, cyan, or magenta: Remove the two screws (A) from the cartridge guide. Next Go Back Gently pull the cartridge guide, then remove the front (B) or rear (C) cartridge guide wheel. CAUTION: Do not pull too hard on the cartridge guide to avoid damage.
Page 333 7526 Installation note: Gently pull the cartridge guide, then use a pair of long-nosed pliers to hold the Previous cartridge guide wheel in place when installing a new rear cartridge wheel. Next Go Back Repair information 4-67...
Page 334 7526 Installation note: Make sure to properly align the pins to their proper slot when reinstalling the Previous cartridge guide wheel. Be careful not to damage or bend the pins. Next Go Back Installation note: Inspect carefully if the cartridge guide wheel is seated properly on the cartridge guide before reinstalling the screw on the cartridge guide.
Page 335 7526 For black: Previous Remove the screw (D) from the lower-most cartridge guide. Next Go Back Gently pull the cartridge guide, then remove the front (E) or rear (F) cartridge guide wheel. CAUTION: Do not pull too hard on the cartridge guide to avoid damage. Repair information 4-69...
Page 336: Cartridge Motor 1/Fuser Cable Removal
7526 Note: When replacing either the front or rear cartridge guide wheel, be careful to not let the non- Previous defective cartridge guide wheel fall off. Installation note: Inspect carefully if the cartridge guide wheel is seated properly on the cartridge guide before reinstalling the screw on the cartridge guide.
Page 337 7526 Disconnect the connectors from the cartridge motor 1 (C) and the fuser motor (D). Previous Next Go Back Disconnect the camshaft cable connector (E) from the motor card and unwind the two cables. Repair information 4-71...
Page 338 7526 Remove the cable from the six retainers (F). Previous Next Go Back Installation notes: Make sure you wrap the camshaft cable around the cartridge motor 1/fuser cable, as shown, to prevent the • cables from interfering with the motors or the motors damaging the cables. Note the routing of the cables and the cable retainers.
Page 339: Cartridge Motor 2/3 Cable Removal
7526 Cartridge motor 2/3 cable removal Previous Remove the LVPS. See “Low-voltage power supply (LVPS) removal” on page 4-124. Disconnect the connectors in JCARTP2 (A) and JCARTS2 (B) on the system board. Next Go Back Disconnect the connectors from the cartridge motor 2 (C) and cartridge motor 3 (D). Repair information 4-73...
Page 340 7526 Remove the cable from the seven retainers (E). Previous Next Go Back Installation notes: Note the routing of the cables and the cable retainers. Service Manual 4-74...
Page 341: Color On Demand Assembly Removal
7526 Color on demand assembly removal Previous Remove the print cartridges. Remove the top cover assembly. See “Top cover assembly removal” on page 4-48. Disconnect the connector at JBOR1 (A) on the system board. Next Go Back Remove the five screws (B). Remove the COD assembly.
Page 342 7526 Installation notes: Previous Push the actuators (A) all the way down. Next Go Back Turn the printer around, and verify the actuators are in the correct location by looking inside the front of the printer. The actuators (B) should be visible in the triangular holes in the frame, as shown. Service Manual 4-76...
Page 343 7526 Rotate the large COD gear until the stop (C) on the gear is against the housing. Previous Next Go Back Engage the gears on the left side of the COD. Repair information 4-77...
Page 344 7526 Engage the gears (D) on the right side of the COD. Previous Replace the five screws (E). Next Go Back Verify the actuators can be seen by looking inside the printer at the triangular holes, as in step 2. Check to make sure you can rotate the large COD gear from stop to stop.
Page 345: Contact Springs Kit Removal
7526 Contact springs kit removal Previous for the part number. “Contact springs kit, including:” on page 7-11 Charge roll contact spring removal Next Remove the HVPS. See “High-voltage power supply (HVPS) removal” on page 4-120. Remove the charge roll contact springs (A). Be sure to push the springs under the retainers that hold them in place.
Page 346 7526 HVPS contact springs removal Previous Remove the HVPS. See “High-voltage power supply (HVPS) removal” on page 4-120. Pull out the spring that will be replaced: HVPS DB contact spring (A) • HVPS DR contact spring (B) • Next HVPS TAR contact spring (C) •...
Page 347 7526 Torsion spring removal Previous Remove all the toner cartridges. Remove the screw (A) and the spring cap (B) of the appropriate contact spring. Next Go Back Press the lower half (C, D) of the springs, and remove the springs. Repair information 4-81...
Page 348 7526 Installation notes: Previous • When installing, make sure the top half (E) of the spring is under the straight spring (F). This is typical for both types of springs. Also make sure the bottom half (D,G) of both springs are compressed and locked by the appropriate locking tabs (H, I).
Page 349: Cooling Fan Removal
7526 Cooling fan removal Previous Remove the rear frame cover. See “Rear frame cover removal” on page 4-40. Remove the rear cover. See “Rear cover removal” on page 4-39. Disconnect the cable at the connector JFAN1 (A) on the system board. Next Go Back Remove the two screws (B).
Page 350: Cooling Fan Filter Removal
7526 Cooling fan filter removal Previous Remove the rear cover. See “Rear cover removal” on page 4-39. Turn the cover over. Squeeze the right side of the filter, and remove it from the tabs (A). Next Go Back Service Manual 4-84...
Page 351: Cpu Fan Removal
7526 CPU fan removal Previous CAUTION—HOT SURFACE The inside of the printer might be hot. To reduce the risk of injury from a hot component, allow the surface to cool before touching. Next Remove the rear frame cover. See “Rear frame cover removal” on page 4-40.
Page 352: Duplex Reference Edge Guide Assembly Removal
7526 Duplex reference edge guide assembly removal Previous Remove the paper tray. Disconnect the transfer module cable (A). Press the two tabs (B) to release the front access door cover assembly. Press the two tabs (C) on either side of the transfer module, and lift out the transfer module. Next Note: Leave the photoconductor units on the transport belt when removing.
Page 353 7526 Looking down at the keyed end of the restraint (D), twist the end clockwise, slide the restraint upward Previous through the slit (E), and slip the end of the restraint through the keyed hole (F). Repeat for the other side. Next Go Back Close the front access door assembly.
Page 354 7526 Remove the two screws (G). Previous Next Go Back Remove the duplex reference edge guide assembly. Service Manual 4-88...
Page 355: Electrophotographic (Ep) Drive Assembly Removal
7526 Electrophotographic (EP) drive assembly removal Previous See for the part number. Remove the paper tray. Disconnect the transfer module cable (A). Next Press the two tabs (B) to release the front access door cover assembly. Press the two tabs (C) on either side of the transfer module, and lift out the transfer module. Note: Leave the photoconductor units on the transport belt when removing.
Page 356 7526 Disconnect the cartridge 1/fuser motor cable (two connectors) (D), and remove the cables from the cable Previous retainers (E). Next Go Back Disconnect the camshaft/transport cable connector (F), and remove the cable from the cable clamp (G). Service Manual 4-90...
Page 357 7526 Unwind the camshaft/transport cable and the cartridge 1/fuser cables (H). Previous Note: Be sure to rewind the camshaft/transport cable around the other cables with about four twists to keep them from interfering with or being damaged by the motors. Next Go Back Disconnect the cartridge 2/cartridge 3 motor cable (two connectors) (J), and remove the cable from the...
Page 358 7526 Remove the two screws (N) to remove the motor driver card assembly. Previous Next Go Back .Remove the three screws (P) on the front. Service Manual 4-92...
Page 359 7526 Remove the two screws (O) on the inside. Previous Next Go Back Repair information 4-93...
Page 360 7526 Remove the seven screws (R) securing the EP drive. Previous Next Go Back R (First) Service Manual 4-94...
Page 361 7526 Remove the 5 V interlock switch cable from the restraint (S) on the backside of the EP drive. Previous Next Go Back Remove the EP drive. Installation notes: The EP drive assembly for the single-function printers and the multiple-function printers (MFP) are the same, except for the fuser retract link.
Page 362 7526 Install the new fuser retract link (C), the follower cam (D), and the E-clip (E). Previous Note: Be sure to orient the follower cam so that the smaller diameter side is against the fuser retract link, and the larger diameter is next to the E-clip. Next Go Back Service Manual...
Page 363 7526 To install the EP drive: Previous Push the actuator rack all the way to the right (A). Pull the link all the way up (B). Next Go Back Note: After installing the EP drive assembly, be sure to test the link by moving it up and down. It should move freely and not rub against any motor cables.
Page 364 7526 Fasten the 5 V interlock cable into the cable retainer (C) on the bottom of the EP drive. Previous Next Go Back Align the gear so the first gear tooth (D) of the top cover camshaft meshes with the first two gear teeth (E) after the flat area in the EP drive actuator rack, and then seat the right side of the top cover camshaft into the boss (F) on the EP drive.
Page 365 7526 Hold the drive in place while replacing the first of the seven screws, then continue replacing the rest of the Previous screws (G). Next Go Back Repair information 4-99...
Page 366 7526 Replace the two screws (H) from the inside. Previous Replace the three screws (J) on front. Next Go Back Wind the camshaft cable (K) around the cartridge 1/fuser cables about four times to make sure they do not interfere with or are damaged by the fuser motor. Connect the cartridge 1/fuser motor cable (two connectors) (L), and place the cables in the cable retainers (M).
Page 367 7526 Connect the cartridge 2/cartridge 3 motor cable (two connectors) (N), and make sure the cable is in the Previous cable clamps (O). Next Go Back Connect the camshaft/transport cable connector (P), and make sure the cable is in the cable clamps (R). Repair information 4-101...
Page 368: Fax Modem Removal
7526 Connect the motor drive cable connector (S), and make sure the cable is in the cable clamps (T). Previous Next Go Back Reinstall the low-voltage power supply (LVPS). Replace the right and rear covers. Replace the transport belt module and developer units. Replace the cartridges and the fuser.
Page 369: Front Door Assembly Removal
7526 Front door assembly removal Previous See the part number for the Front door assembly for the specific model you need on. Remove the front access cover assembly. See “Front access cover assembly removal” on page 4-20. Remove the LVPS. See “Low-voltage power supply (LVPS) removal”...
Page 370 7526 Open the front door assembly. Previous Unwrap and remove the cable from the left and right pulleys (C). Next Go Back Close the front door assembly, and remove the mounting screw (D) and the cap (F). Service Manual 4-104...
Page 371 7526 Open the front door assembly, slide it to the right, and remove. You need to press firmly to slide the front Previous door assembly to the right. Next Go Back Installation note: See “Front door assembly front cable (left) removal” on page 4-106 “Front door for proper installation of the cable restraints.
Page 372: Front Door Assembly Front Cable (Left) Removal
7526 Front door assembly front cable (left) removal Previous Remove the paper tray. Disconnect the transfer module cable (A). Press the two tabs (B) to release the front access door cover assembly. Press the two tabs (C) on either side of the transfer module, and lift out the transfer module. Next Note: Leave the photoconductor units on the transport belt when removing.
Page 373 7526 Looking down at the keyed end of the restraint (D), twist the end clockwise, slide the restraint upward Previous through the slit (E), and slip the end of the restraint through the keyed hole (F). Repeat for the other side. Next Go Back Repair information...
Page 374 7526 Remove the left cover. See “Left cover removal” on page 4-23. Previous Close the front access door assembly. Release the cable spring (G) from the front door assembly. Note: In order to access the springs, make sure the top access cover is closed. Next Go Back Remove the end of the cable (J) from the frame.
Page 375 7526 Open the front door assembly, and using a flathead screwdriver, rotate the top cover camshaft clockwise to Previous raise the front door locking mechanism (J). Next Go Back Installation note: Note: The longer cable installs on the left side of the printer. Repair information 4-109...
Page 376: Front Door Assembly Front Cable (Right) Removal
7526 Front door assembly front cable (right) removal Previous Remove the paper tray. Disconnect the transfer module cable (A). Press the two tabs (B) to release the front access door cover assembly. Press the two tabs (C) on either side of the transfer module, and lift out the transfer module. Next Note: Leave the photoconductor units on the transport belt when removing.
Page 377 7526 Looking down at the keyed end of the restraint (D), twist the end clockwise, slide the restraint upward Previous through the slit (E), and slip the end of the restraint through the keyed hole (F). Repeat for the other side. Next Go Back Repair information...
Page 378 7526 Close the front access door assembly. Previous Release the spring (G) from the front door assembly. Note: In order to access the springs, make sure the top access cover is closed. Next Go Back Remove the end of the cable (H) from the frame. Remove the right restraint cable.
Page 379 7526 Installation notes: Previous The shorter restraint cable installs on the right side of the printer. Next Go Back Repair information 4-113...
Page 380: Fuser Assembly Removal
7526 Fuser assembly removal Previous V”, or for the “Fuser assembly, 115 V”, “Fuser assembly, 230 “Fuser assembly, 100 V” on page 7-5 part number. CAUTION Next The fuser can be extremely hot. Use care when handling to avoid burns. Go Back Turn off the printer.
Page 381: Fuser Ac Cable Removal
7526 Fuser AC cable removal Previous Note: The LVPS to fuser AC cable is black. Remove the top cover assembly. See “Top cover assembly removal” on page 4-48. Turn the top cover assembly over. Next Slide the connector down, and remove the connector from the keyed hole (A). Go Back Repair information 4-115...
Page 382 7526 Remove the cable from the cable openings (B). Previous Note: Observe the routing of the cable for reinstallation. Next Go Back Remove the cable from the cable restraint (C) on the right side, and remove the cable. Service Manual 4-116...
Page 383: Fuser Dc Cable Removal
7526 Fuser DC cable removal Previous Note: The fuser to system board autoconnect cable is red. Remove the top cover assembly. See “Top cover assembly removal” on page 4-48. Turn the top cover assembly over. Next Remove the connector (A) from the top cover assembly. Warning: You will damage the old connector in the process.
Page 384: Hard Drive Assembly Removal
7526 Hard drive assembly removal Previous Remove the rear frame cover. See “Rear frame cover removal” on page 4-40. Press the locking tab (A) as you disconnect the hard disk cable from the system board (B). Next Go Back Open the left cover door, and remove the two screws (C). Service Manual 4-118...
Page 385 7526 Pull the hard disk straight out to pop the hard disk standoffs free of the system board. Previous Next Go Back Repair information 4-119...
Page 386: High-Voltage Power Supply (Hvps) Removal
7526 High-voltage power supply (HVPS) removal Previous for the part number. “High-voltage power supply” on page 7-11 Remove the left cover. See “Left cover removal” on page 4-23. Remove the six mounting screws (A). Next Go Back Release the locking tab (B) from the front, lower corner of the HVPS. Service Manual 4-120...
Page 387 7526 Disconnect the five connectors (C) from the HVPS. Previous Next Go Back Installation notes: Be sure to replace the spring when replacing the HVPS. See the illustration for proper orientation. Repair information 4-121...
Page 388: High-Voltage Power Supply (Hvps) Cable Removal
7526 High-voltage power supply (HVPS) cable removal Previous Remove the top cover assembly. See “Top cover assembly removal” on page 4-48. Disconnect the cable connector at JHVPS1 (A) on the system board, and extract the cable through the opening (B) in the frame. Next Go Back Disconnect the cable connector (C) from the back of the HVPS.
Page 389: Left Bellcrank Assembly Removal
7526 Left bellcrank assembly removal Previous See for the part number. Remove the left cover. See “Left cover removal” on page 4-23. Remove the C-clip (A). Next Go Back Remove the left bellcrank assembly. Repair information 4-123...
Page 390: Low-Voltage Power Supply (Lvps) Removal
7526 Low-voltage power supply (LVPS) removal Previous for the part number. “Low-voltage power supply” on page 7-7 Remove the right cover. See “Right cover removal” on page 4-41. Remove the rear frame cover. See “Rear frame cover removal” on page 4-40.
Page 391 7526 Installation note: Previous • When installing the new LVPS, make sure the voltage switch (A) is set for the proper value (115 V or 230 V), depending on the country. Next Go Back Install the LVPS, and make sure the fuser AC cable is in the cable guides, and not behind the LVPS. •...
Page 392: Motor Driver Cable Removal
7526 Motor driver cable removal Previous Remove the LVPS. See “Low-voltage power supply (LVPS) removal” on page 4-124. Disconnect the connector in JDVR1 (A) on the system board. Next Go Back Disconnect the connector on the motor driver card (B). Remove the cable from the cable from the four cable retainers (C).
Page 393: Motor Driver Card Removal
7526 Motor driver card removal Previous Remove the right cover. See “Right cover removal” on page 4-41. Disconnect the three cables (A). Remove the two screws (B), and remove the motor driver card. Next Go Back Repair information 4-127...
Page 394: Multipurpose Feeder (Mpf)/Duplex Gear And Housing Removal
7526 Multipurpose feeder (MPF)/duplex gear and housing removal Previous See the multipurpose feeder/duplex gear and housing kit on for the part number. Remove the paper pick mechanism assembly. See “Paper pick mechanism assembly removal” on page 4-137. Next Remove the two E-clips (A) from the gears. Go Back Remove the three screws (B).
Page 395 7526 Slide a flathead screwdriver up and under the front cover. Previous Slide the remaining two gears and housings off. Next Go Back Repair information 4-129...
Page 396: Multipurpose Feeder (Mpf)/Duplex Motor Assembly Removal
7526 Multipurpose feeder (MPF)/duplex motor assembly removal Previous for the part number. “MP feeder/duplex motor” on page 7-7 Remove the low-voltage power supply (LVPS). See “Low-voltage power supply (LVPS) removal” on page 4-124. Next Remove the multipurpose feeder/duplex gear and housing. See “Multipurpose feeder (MPF)/duplex gear and housing removal”...
Page 397 7526 Slide the motor out of the housing. Previous Disconnect the connector (D) from the motor. Next Go Back Installation notes: Connect the cable (A) at the motor. Slide the cable tie (B) onto the motor. Repair information 4-131...
Page 398 7526 Insert the motor into the frame. Previous Next Go Back Replace the screws (C). Service Manual 4-132...
Page 399 7526 Slide the housing onto the motor, making sure the four tabs of the housing slide under the cable tie. Previous Next Go Back Repair information 4-133...
Page 400: Multipurpose Feeder (Mpf)/Duplex Motor Cable Removal
7526 Multipurpose feeder (MPF)/duplex motor cable removal Previous Remove the multipurpose feeder/duplex motor. See “Multipurpose feeder (MPF)/duplex motor cable removal” on page 4-134. Disconnect the connector from JDX1 (A) on the system board. Next Go Back Remove the cable from the cable retainers (B). Service Manual 4-134...
Page 401: Option Cable Removal
7526 Option cable removal Previous Remove the LVPS. See “Low-voltage power supply (LVPS) removal” on page 4-124. Disconnect the cable connector at JOPT2 (A) on the system board. Next Go Back Replace the rear frame cover to protect the system board. Position the printer on its back Remove the two screws (B).
Page 402 7526 Press the tabs together to remove the option cable connector. Previous Note: Be sure to note the cable routing for reinstallation. Next Go Back Service Manual 4-136...
Page 403: Paper Pick Mechanism Assembly Removal
7526 Paper pick mechanism assembly removal Previous See for the part number. Remove the paper tray. Remove the waste toner assembly. See “Waste toner assembly removal”. Next Remove the rear frame cover. See “Rear frame cover removal” on page 4-40. Disconnect the connector in JFDPCK1 (A) and JTRAY1 (B) on the system board.
Page 404 7526 Open the front access cover. Previous Disconnect the transfer module cable (D). Press the two tabs (E) to release the front access cover assembly. Press the two tabs (F) on either side of the transfer module, and lift out the transfer module. Note: Leave the photoconductor units on the transport belt when removing.
Page 405 7526 Remove the four screws (G) from the bottom pan. Previous Next Go Back With one hand, disengage the gear (H), then grasp the paper pick assembly, and pull forward and downward to disengage the assembly until the front (J) and rear locking tabs release (not visible). Repair information 4-139...
Page 406 7526 Lower the paper pick mechanism, and remove through the front of the printer. Previous Note: Make sure the JTRAY1 and JTRAY2 connectors do not bind when passing through the frame access hole. Next Go Back Installation notes: Remove the waste toner assembly. See “Waste toner assembly removal”...
Page 407 7526 Tape the ADF (scanner) cover to the flatbed scanner. Previous Next Go Back Turn the printer on its back. Slide the paper pick assembly toward the back of the printer, and down to engage the tabs (A). Slide the tabs (A), and engage the gear (B). Reach into the printer, and replace the front right screw (C) to secure the paper pick assembly.
Page 408 7526 Secure the remaining three screws (D). Previous Next Go Back Remove the rear frame cover. Route the cables through the hole in the frame, and connect them to JFDPCK1 (E) and JTRAY1 (F). Service Manual 4-142...
Page 409 7526 Reattach the toroids (G) to the cables. Previous Next Go Back Replace the rear frame cover. Replace the waste toner assembly. Replace the toner cartridges. Replace the transfer module with the photoconductor units. Close the front access cover. Replace the paper tray. Open the ADF (scanner) cover and slide the scanner lock to the open position.
Page 410: Photoconductor Unit Removal
7526 Photoconductor unit removal Previous Not a FRU Warning: To avoid damaging the photoconductor drum, hold the photoconductor units by their handle and place the photoconductor units on a clean surface. See “Handing the photoconductor unit” on Next for additional information. page 4-2 Open the front access door.
Page 411: Pick Tires Removal And Replacement
7526 Pick tires removal and replacement Previous See for the part number. The autocompensator pick roll tires are located in the base printer. There are also tires in all input options. If you have additional input options, and you are having problems with media picking, replace these tires also. Always Next replace the pick tires in pairs.
Page 412: Printer Pad Removal
7526 Installation notes: Install the new rubber tires with the surface texture turning in the direction as shown. Previous Note: Feel the rubber surface to verify it turns properly in the direction shown. Next Go Back Printer pad removal Slide the corner of the printer containing the damaged pad over the corner of the table. Remove the side cover that corresponds to the damaged pad so you can see if the pad fully seats in the installation holes.
Page 413: Printhead Removal, Installation, And Adjustment
7526 Printhead removal, installation, and adjustment Previous for the part number. “Printhead assembly” on page 7-9 Service tip—Testing the new printhead Next for quick way to verify that the NVRAM on a printhead is good “Printhead verification” on page 3-52 before you install the printhead.
Page 414 7526 Remove all of the toner cartridges. Previous Remove the four screws (D). Next Go Back Lift the rear cover and remove it. Remove the rear frame cover. Loosen the eight screws (E). Lift the rear frame cover, and remove. Remove the right cover.
Page 415 7526 Remove the printhead. Previous Remove the printhead mounting screws (F). Next Go Back While holding the printhead in place, loosen the printhead alignment screw (G) until the printhead comes out easily. Warning: Secure the printhead when loosening the printhead alignment screw. Failure to do this allows the printhead to fall out of the printer, potentially damaging the printhead.
Page 416 7526 Install the printhead and replace parts Previous Warning: When reinstalling the printhead, it is important to keep in mind that the printhead mounting screws • should be initially tightened just enough to hold the printhead in the printer. The printer parts are installed with the printhead mounting screws loose so you can print the pages that will be used to Next align the black plane to the printer frame.
Page 417 7526 Lightly tighten the alignment screw (C). Previous Next Go Back Feed the ground cable through the hole in bottom left side of the frame. Replace the system board support shield. Loosely attache the two mounting screws (D2). Set the system board shield in place. Note: Check that the ribbon cables do not rub against the edges of the frame.
Page 418 7526 Replace the system board. Previous Place the system board in position. Note: Check that the mirror motor cable, printhead, and UICC cables do not rub against the edges of the frame. Replace the nine screws (E) in the system board in the following order: Loosely attach the four corners (E1) in a clockwise order, beginning with the left top center.
Page 419 7526 Replace the ground strap (F) on the screw (G), and tighten the screw. Previous Replace the two screws (H) for the hard disk shield. Next Go Back Reconnect all the connectors to the system board. Use the diagram below for a guideline. Warning: Be careful reconnecting the printhead ribbon cable (J) and the UICC cable (K).
Page 420 7526 Replace the LVPS. Previous Install the LVPS. Replace the five LVPS mounting screws. Reconnect the AC LVPS cable to the LVPS. Reconnect the AC power cable to the LVPS. Reconnect the AC LVPS cable to the JLVPS1 connector on the system board. Next Replace the right cover.
Page 421 7526 Skew (black) Previous Connect the electrical cord into the printer. Connect the electrical cord into the outlet. Set the skew for black. Open the top access cover. Next Open the front access cover. Enter Diagnostic mode (turn off the printer, press and hold 3 and 6, turn on the printer, and release the buttons when the progress bar appears).
Page 422 7526 Touch Quick Test. A page similar to this one prints: Previous Next Go Back Service Manual 4-156...
Page 423 7526 Adjust the printhead alignment screw (A) to adjust the skew and straighten the image on the printout. Previous Next Go Back If the top right alignment marks are lower than the top left alignment marks, rotate the alignment screw counterclockwise a full revolution, and print the Quick Test page. Repeat adjusting the screw and printing the Quick Test page until the top alignment marks are the same distance from the top of the media.
Page 424 7526 Tighten the printhead mounting screws. Previous Turn off the printer. Disconnect the power cord from the electrical outlet. Disconnect the transfer module cable. Press the two tabs on either side of the transfer module, and lift out the transfer module with the photoconductor units in place.
Page 425 7526 Registration (black) Previous Top Margin Reconnect the power cord to the electrical outlet, but do not turn on the printer yet. Enter Diagnostic mode (press and hold 3 and 6, turn on the printer, and release the buttons when the Next progress bar appears).
Page 426 7526 Bottom Margin Previous Adjust the bottom margin until the points of the bottom margin alignment marks are visible and touching the edge of the paper. Next Go Back The right arrow increases the value and moves the bottom alignment marks up the page. •...
Page 427 7526 Alignment (cyan, yellow, and magenta) Previous Touch Back until you reach the top menu, and touch Alignment Menu. Select Cyan. Cyan Next Top Margin Left Margin Go Back Right Margin Skew Quick Test Touch the left or right arrows to set Top Margin to zero. Do the same for Left Margin, Right Margin, Bottom Margin, Skew, and Bow.
Page 428 7526 Determine the line under Fine Adjustment that is closest. If the value is beyond the Fine Adjustment scale, Previous use either of the Coarse Adjustment scales. Next Go Back Enter the number determined from the Fine Adjustment scale or the Coarse Adjustment scales on the part of the page for the “T”...
Page 429 7526 Repeat this process for skew (Z). Don't forget to subtract the T value and add the current cyan Z value to Previous obtain the new skew (Z) value. An example is shown below: Next Go Back Continue to follow the directions on the bottom of the first page to find the Cyan Top Margin (T), the Skew (Z), and on the second page of the Quick Test page, the Left Margin (L), Right Margin (R), and Bow (P).
Page 430: Right Bellcrank Assembly Removal
7526 Right bellcrank assembly removal Previous See for the part number. Remove the right cover. See “Right cover removal” on page 4-41. Remove the C-clip (A). Next Go Back Remove the right bellcrank assembly. Service Manual 4-164...
Page 431: System Board Removal
7526 System board removal Previous See the system board part number for the model you need on page 7-9. CAUTION Next This product contains a lithium battery. THERE IS A RISK OF EXPLOSION IF THE BATTERY IS REPLACED BY AN INCORRECT TYPE. Discard used batteries according to the battery manufacturer’s instructions and local regulations.
Page 432 7526 Remove any toroids by uncliping the fasteners. Previous Note: Be sure to note where you have removed the toroids, and replace them during installation. Next Go Back Disconnect all the cables from the system board. Warning: Do not use tools to remove the UICC cable (B) or the printhead ribbon cable (C). Flat ribbon cables can be damaged and should be removed gently by hand.
Page 433 7526 Remove the nine screws (D) from the system board. Previous Next Go Back Remove the system board. Repair information 4-167...
Page 434 7526 Installation notes: Previous Place the system board in position. Note: Check that the mirror motor cable and the printhead cable do not rub against the edges of the frame. Replace the nine screws (A) in the system board in the following order: Next Loosely attach the four corners (A1) in a clockwise order, beginning with the left top corner.
Page 435 7526 Replace all the screws (B) from the left side of the printer, including: Previous • Ethernet port connector (1 screws) Modem shield (1 screws) • • Hard disk shield (2 screws) Ground screw (1 screw) • Note: Be sure to attach the ground wire (C) to the ground screw. Next Go Back Repair information...
Page 436 7526 c. Reconnect all the connectors to the system board. Use the diagram below for a guideline. Previous Warning: Be careful reconnecting the printhead ribbon cable (D) and the MDC cable (E). Ribbon cables can be damaged easily and should be handled carefully. Next Go Back Install the toroids, hard disk, modem, and wireless network card, if appropriate.
Page 437: System Board Support Shield Removal
7526 System board support shield removal Previous for the part number. “System board support shield” on page 7-9 Remove the system board. See “System board removal” on page 4-165. Remove the right cover. See “Right cover removal” on page 4-41. Next Pull the cables through the access holes on the right side of the printer.
Page 438 7526 Remove the five mounting screws (D) from the top and bottom of the support shield. Previous Note: Only the ribbon and mirror motor cables come through the access holes in the system board support shield. Next Go Back Lower and remove the support shield. Note: Be careful not to damage the ribbon cables that route through the top and bottom frame of the printer.
Page 439 7526 Installation notes: Previous Loosely attach the two mounting screws (A). Set the system board shield in place. Note: Check that the ribbon cables do not rub against the edges of the frame. Replace the remaining system board shield screws in the following order: Next Replace the five screws (B) from the inner right side of the support shield.
Page 440: Toner Level Sensor Removal
7526 Toner level sensor removal Previous for the part number. “Toner level sensor” on page 7-11 Note the locations of the toner sensors. Next Go Back Service Manual 4-174...
Page 441 7526 Remove the HVPS. See “High-voltage power supply (HVPS) cable removal” on page 4-122. Previous For the upper two sensors: These sensors are more difficult to reach because the toner is difficult to reach: It is difficult to press both locking tabs at the same time. Using a spring hook, press the locking tab (A), and disengage the sensor on that side.
Page 442: Top Access Cover Links Removal
7526 Top access cover links removal Previous Links come two in a package and fit either the right or the left. Lower links Next Open the top access cover. Remove the side cover that corresponds to the link you need to replace. For example, if you are replacing the right lower link, remove the right cover.
Page 443: Top Access Cover Sensor Removal
7526 Top access cover sensor removal Previous This cable is gray. Remove the rear frame cover. See “Rear frame cover removal” on page 4-40 Disconnect the cable in connector JFDS1, and remove the cable through the top left frame. Next Go Back Remove the right cover.
Page 444 7526 Installation notes: Previous Turn over the top access cover. Snap the sensor into place. Note: Make sure the sensor is replaced with the slot (A) in the center aligned with the gap in the top cover frame. Also note the placement of the cable connector. Next Route the cable through the opening (B), and through the openings in the other side of the top cover assembly.
Page 445: Top Access Cover Springs Removal
7526 Top access cover springs removal Previous The down-level springs should be replaced. Next Go Back If the cover won’t open Lift the top access cover as far as you can, slip the spring hook into the opening between the top access cover and the side cover, hook the link, and pull on the link to open the top access cover.
Page 446 7526 Replacing the right spring Previous Open the top access cover. Note: If the top access cover will not open, see “If the cover won’t open” on page 4-179. With a spring hook, remove the right spring from the link. Next Note: Depending on the orientation of the spring, the spring will attach from the inside or the ouside.
Page 447 7526 Rotate the pivot (A) upward. Previous Slide the pivot out of the frame and outer top access cover holes. Do not remove it from the inner hole. If a spring is attached to the pivot, remove it. Next Go Back Place the new spring in place to hook onto the pivot, and push the pivot back into place securing the spring on the pivot.
Page 448 7526 Rotate the pivot down to lock it back into place. Previous Next Go Back Attach the other end of the spring onto the link. Note: Depending on the orientation of the spring (step 6), the spring will attach from the inside or outside. Service Manual 4-182...
Page 449 7526 Replacing the left spring Previous Open the top access cover. With a spring hook, detach the spring from the left link. Next Go Back Detach the spring from the frame. Note: If the spring is not attached to the frame as shown, continue to the next step. Repair information 4-183...
Page 450 7526 Rotate the pivot upward. Previous Next Go Back Slide the pivot out of the frame and outer top access cover holes. Do not remove it from the inner hole. If a spring is attached to the pivot, remove it. Position the new spring with the bend in the spring down, and slip it over the pivot end.
Page 451 7526 Use a screwdriver to push the pivot back into the slot to lock it in place. Previous Next Go Back Attach the front end of the spring to the top access cover link. Repair information 4-185...
Page 452: Top Cover Camshaft Assembly Removal
7526 Top cover camshaft assembly removal Previous See for the part number. Remove the top access cover. See “Top access cover assembly removal” on page 4-43. Remove the fuser. See “Fuser assembly removal” on page 4-114. Next Remove the top screw (A), and loosen the other screw (B). This will allow you to flex the EP drive. Go Back Remove the two screws (C).
Page 453 7526 Rotate the camshaft up using the camshaft actuator handle (D) so you can access the other two Previous screws (E), and remove them. Next Go Back Flex the EP drive assembly to remove the right side of the camshaft from the boss (F) and lift to remove the camshaft.
Page 454 7526 Installation notes: Previous On the left side, align the mark on the idler gear (A) with the mark on the camshaft gear (B), and slide the camshaft into place, meshing the gears on the left side. Next Go Back Service Manual 4-188...
Page 455 7526 Rotate the camshaft up using the camshaft actuator handle (C), and make sure the gears on the right side Previous mesh so the first gear tooth of the camshaft aligns with the first two gear teeth of the EP drive actuator rack (D).
Page 456 7526 Rotate the camshaft using the camshaft actuator handle, and replace the two screws (H). Previous Next Go Back Replace the screw in the EP drive that allowed you to flex the EP drive, and tighten the other screw (see step 4 of the removal).
Page 457: Transfer Module Removal
7526 Transfer module removal Previous for the part number. “Transfer module” on page 7-5 Open the top access cover. Open the front access door. Next Disconnect the transfer module cable (A). Press the two tabs (B) to release the front access cover assembly. Press the two tabs (C) on either side of the transfer module, and lift out the transfer module.
Page 458 7526 Remove the photoconductor units. Lift the right end handle (D) of the photoconductor unit, releasing from Previous the mount. Lift the unit up and away from the left side of printer, ensuring the left end of the photoconductor is released from the holding pin (E).
Page 459: Transport Cable Removal
7526 Transport cable removal Previous Remove the LVPS. See “Low-voltage power supply (LVPS) removal” on page 4-124. Disconnect the transfer module cable (transport cable) (A). Press the two tabs (B) to release the front access cover assembly. Press the two tabs (C) on either side of the transfer module, and lift out the transfer module. Next Note: Leave the photoconductor units on the transport belt when removing.
Page 460 7526 Disconnect the transport cable from the system board at JTPS1 connector (D). Previous Note: The cable connector on the system board end of the cable is smaller than the connector on the front access door, and it may be easier to get that end through the openings. Next Go Back Extract the cable through the opening in the frame to the right side of the printer (E).
Page 461 7526 Remove the six screws (H) from the cable shield. Previous Next Go Back Remove the cable through the cable channel (J). Repair information 4-195...
Page 462: Transport Motor Cable Removal
7526 Transport motor cable removal Previous Remove the right cover. See “Right cover removal” on page 4-41. Disconnect the cable from the transport motor drive (A). Disconnect the cable from the transport motor (B). Next Go Back Remove the cable. Service Manual 4-196...
Page 463: Uicc Card Removal
7526 UICC card removal Previous Remove the top access cover assembly. See “Top access cover assembly removal” on page 4-43. Place the top access assembly on a soft link-free cloth with the touchscreen facing down. Remove the six smaller screws (A) securing the position guide. Next Go Back Repair information...
Page 464 7526 Remove the five larger screws (B) and the two smaller screws (C). Previous Next Go Back Service Manual 4-198...
Page 465 7526 Lift the position guide, so you can access the cables. Previous Flip open the lock (D) on the wide ribbon cable, and remove the cable from the connector. Next Go Back Carefully pull the display cable (E) straight out to disconnect it. Repair information 4-199...
Page 466 7526 Installation note: Inspect the display cable (A), and make sure that it is connected to the UICC card with its Previous white side facing the card as shown. Next Go Back Remove the screw (F) and disconnect the ground cable. Service Manual 4-200...
Page 467 7526 Remove the position guide. Previous Next Go Back Disconnect the UICC cable (F). Remove the three screws (G) from the operator panel card. Remove the UICC card. Repair information 4-201...
Page 468: Uicc Cable Removal
7526 UICC cable removal Previous Remove the top access cover assembly. See “Top access cover assembly removal” on page 4-43. Place the top access assembly on a soft link-free cloth with the touchscreen facing down. Remove the six smaller screws (A) securing the position guide. Next Go Back Service Manual...
Page 469 7526 Remove the five larger screws (B) and the two smaller screws (C). Previous Next Go Back Lift the position guide, so you can access the cables. Repair information 4-203...
Page 470 7526 Flip open the lock (D) on the wide ribbon cable, and remove the cable from the connector. Previous Next Go Back Disconnect the display cable (E) by pulling it straight out. Service Manual 4-204...
Page 471 7526 Installation note: Inspect the display cable (A), ans make sure that it is connected to the UICC card with its Previous white side facing the card as shown. Next Go Back Remove the screw (F) and disconnect the ground cable. Repair information 4-205...
Page 472 7526 Remove the position guide. Previous Disconnect the UICC cable (G), and remove the cable from the cable retainers (H). Next Go Back Remove the UICC card. Service Manual 4-206...
Page 473: Usb Connector Cable Removal (Front Panel)
7526 USB connector cable removal (front panel) Previous Remove the top access cover. See “Top access cover assembly removal” on page 4-43. Place the top access assembly on a soft link-free cloth with the touchscreen facing down. Remove the six smaller screws (A) securing the position guide. Next Go Back Repair information...
Page 474 7526 Remove the five larger screws (B) and the two smaller screws (C). Previous Next Go Back Lift the position guide, so you can access the cables. Service Manual 4-208...
Page 475 7526 Flip open the lock (D) on the wide ribbon cable, and remove the cable from the connector. Previous Next Go Back Disconnect the display cable (E) by pulling it straight out. Repair information 4-209...
Page 476 7526 Installation note: Inspect the display cable (A), asn make sure that it is connected to the UICC card with its Previous white side facing the card as shown. Next Go Back Remove the screw (F) and disconnect the ground cable. Service Manual 4-210...
Page 477 7526 Remove the position guide. Previous Disconnect the USB ground cable (G). Note: Take note of the routing of the ground cable. Remove the two screws (H) that secure the USB connector. Next Go Back Remove the USB connector cable, the ground cable, and the connector. Repair information 4-211...
Page 478: Waste Toner Assembly Removal
7526 Waste toner assembly removal Previous Not a FRU. Press the waste toner release latch (A). Swing the front of the waste toner assembly away from the printer and remove. Next Go Back Service Manual 4-212...
Page 479: Waste Toner Hv Contact Assembly Removal
7526 Waste toner HV contact assembly removal Previous for the part number. “Waste toner HV contact assembly” on page 7-11 Disconnect the transfer module cable (A). Press the two tabs (B) to release the front access door cover assembly. Next Press the two tabs (C) on either side of the transfer module, and lift out the transfer module.
Page 480 7526 Remove the six mounting screws (D) holding the HVPS in place. Previous Next Go Back Release the locking tab (E) from the front, lower corner of the HVPS. Service Manual 4-214...
Page 481 7526 Lay the board to the left. Previous Next Go Back Disconnect the three top toner level sensor cables (F) from the HVPS. Repair information 4-215...
Page 482 7526 Remove the two screws (G). Previous Next Go Back G (18B1236) Service Manual 4-216...
Page 483 7526 Remove the cleaner shutter actuator (H) from the waste toner HV contact assembly. Previous Next Go Back Repair information 4-217...
Page 484 7526 Remove the four screws (J), the two screws (K), and the screw (L). Tilt the Waste toner HV contact Previous assembly forward and up to remove it. Next Go Back L (27S2838) J (18B0832) K (88A0313) Service Manual 4-218...
Page 485 7526 Previous Installation note: Do the following procedures when re-installing the waste tone HV contact assembly: Remove the fuser. Remove all four toner cartridges Next Remove the four sets of torsion springs. Remove the screw (A) and the spring cap (B) of the appropriate contact spring.
Page 486 7526 Install the waste toner HV contact assembly into place. Route the toner level sensor cables (E) through the Previous holes in the waste toner HV contact assembly while positioning the assembly. Make sure the aligner shaft worm gear is aligned as shown. Ribs aligned Next Go Back...
Page 487 7526 Install the seven screws in the order shown below. Previous Next Go Back Install 3 27S2838 Install 4 Install 1 Install 2 (18B0832) (18B0832) (88A0313) Repair information 4-221...
Page 488 7526 Use two screws (F) to attach the cleaner shutter actuator to the Waste toner HV contact assembly. Make Previous sure the gear aligns as shown. Ribs aligned Next Go Back F (27S2838) Service Manual 4-222...
Page 489 7526 Attach the eight springs (G) to the Waste toner HV contact assembly as shown. Make sure the springs are Previous behind the retainers. Retainer Next Go Back Repair information 4-223...
Page 490 7526 Install the contact springs. When installing each contact spring, make sure the top half (H) of the spring is Previous under the straight spring (J). This is typical for both types of springs. Also make sure that the bottom half (K,L) of both springs are compressed and locked by the appropriate locking tabs (M,N).
Page 491: Wireless Network Antenna Removal
7526 Wireless network antenna removal Previous Remove the wireless network card. see “Wireless network card removal” on page 4-226. Disconnect the wireless network antenna cable (A) from the wireless network card. Next Go Back With pliers, squeeze the inner tabs (B), and pull the antenna out. Pull the cable through, and remove the antenna with the cable.
Page 492: Wireless Network Card Removal
7526 Wireless network card removal Previous Remove the rear frame cover. See “Rear frame cover removal” on page 4-40. Squeeze the connector (A) to disconnect the wireless cable from the system board at J5. Next Go Back Open the left door cover. Remove the two screws (B) that secure the card into place.
Page 493 7526 Pop the posts (C) on the card from the sockets (holes) in the system board. Previous Next Go Back Note: If you are removing the wireless network card to access another part, leave the antenna attached to the card, and you are done. If you need to replace the wireless network card FRU, continue with the next step to remove the separate wireless network antenna FRU.
Page 494: Scanner Flatbed And Automatic Document Feeder (Adf)
7526 Previous Scanner flatbed and automatic document feeder (ADF) ADF front cover removal Open the ADF front cover. Next Remove the two screws (A). Go Back Close the ADF front cover. Separate the cover from the ADF case assembly by pressing on the release and cover. Service Manual 4-228...
Page 495 7526 Lift the cover from the ADF. Previous Next Go Back Repair information 4-229...
Page 496: Adf Front Side Cover Removal
7526 ADF front side cover removal Previous Remove the input tray. See “Input tray removal” on page 4-242. Open the ADF front cover. Remove the screw (A). Next Go Back Lift the cover to remove. Service Manual 4-230...
Page 497: Adf Handle Cover Removal
7526 Installation notes: Insert the tab into the slot, and lower it into place. Previous Next Go Back ADF handle cover removal Open the ADF. Remove the two screws (A) in the handle cover. Remove the handle cover. Repair information 4-231...
Page 498: Adf Motor Side Cover Removal
7526 ADF motor side cover removal Previous Remove the input tray. See “Input tray removal” on page 4-242. Remove the ADF front cover. See “ADF front cover removal” on page 4-228. Open the ADF case assembly. Remove the two screws (A). Next Go Back Service Manual...
Page 499 7526 Lift the ADF motor side cover, and disconnect the tray connector (B). Previous Next Go Back Note: If you are removing the ADF motor side cover to access another part, leave the cable attached, and you are done. If you need to replace the ADF motor side cover FRU, continue with the next step to remove the separate left door cover FRU.
Page 500 7526 Remove the screw (D) to remove the cable from the ADF motor side cover. Previous Next Go Back Installation notes: • Install the cable from the old FRU in the new FRU. Be sure to route the cable through the hole. The smaller connector goes through the hole. •...
Page 501: Adf Upper Case Cover Removal
7526 ADF upper case cover removal Previous Open the ADF cover. Remove the two screws (A). Next Go Back Repair information 4-235...
Page 502 7526 Lift the ADF upper case cover up to access the ground screw, and remove the ground screw (B). Previous Next Go Back Note: If you are removing the ADF upper case cover to access another part, leave the cable attached, and you are done.
Page 503: Flatbed Cave Led Card And Cover Removal
7526 Flatbed cave LED card and cover removal Previous The flatbed cave LED card and the flatbed cave LED cover are separate FRUs. The removal for each is the same. Remove the screw (A). Next Go Back Pull the assembly down. Disconnect the cable (B).
Page 504 7526 Pinch each of the two clear posts (C), separate the flatbed cave LED cover from the flatbed cave LED Previous card. Next Go Back Separate the FRU you need to replace. Service Manual 4-238...
Page 505: Flatbed With Glass Cover Removal
7526 Flatbed with glass cover removal Previous Remove the ADF. See “ADF removal (entire)” on page 4-248. Disconnect the two cables (A). Next Go Back Remove the scanner left cover. See “Scanner left cover removal” on page 4-244. Remove the scanner right cover. See “Scanner right cover removal”...
Page 506 7526 Remove the four screws (C) from the right and left sides. Previous Next Go Back Remove the two screws (D) from the top. Service Manual 4-240...
Page 507 7526 Lift up and extract the two cables (E) through the frame. Previous Next Go Back Remove the flatbed with glass cover. Repair information 4-241...
Page 508: Input Tray Removal
7526 Input tray removal Previous Lift the input tray. Remove the screw (A) securing the cable cover. Next Go Back Disconnect the cable connector (B). Lift the left front side, and ease the rear right edge out. Service Manual 4-242...
Page 509: Scanner Front Cover Removal
7526 Disengage the cable from the channel, and remove the tray. Previous Note: Observe the routing for re-installation. Next Go Back Scanner front cover removal Open the ADF. Grasp the front cover and the top right, and pull to remove the scanner front cover. Repair information 4-243...
Page 510: Scanner Left Cover Removal
7526 Scanner left cover removal Previous Remove the scanner front cover. See “Scanner front cover removal” on page 4-243. Remove the left cover. See “Left cover removal” on page 4-23. Remove the three screws (A). Next Go Back Pull the bottom out, and slide it toward the front. Lift the left cover away.
Page 511: Scanner Rear Cover Removal
7526 Scanner rear cover removal Previous Remove the six screws (A). Next Go Back Remove the scanner rear cover. Note: Make sure the flatbed filter does not get lost. Repair information 4-245...
Page 512: Scanner Right Cover Removal
7526 Scanner right cover removal Previous Remove the scanner front cover. See “Scanner front cover removal” on page 4-243. Remove the right cover. See “Right cover removal” on page 4-41. Remove the screw (A). Next Go Back Slide the cover toward the front of the multifunction printer. Service Manual 4-246...
Page 513 7526 Grasp the cover on the lower right, and pull up. Previous Next Go Back Repair information 4-247...
Page 514: Adf Removal (Entire)
7526 ADF removal (entire) Previous Remove the left cover. See “Left cover removal” on page 4-23. Remove the ground screw (A) secured to the MDC card. Disconnect the cable (B). Next Go Back Remove the scanner rear cover. See “Scanner rear cover removal” on page 4-245 Service Manual 4-248...
Page 515 7526 Remove the screw (C) that secures the ground cable. Previous Remove the cable from the cable restraint (D). Next Go Back LIft the ADF until it has resistance, press the release tabs (D), and complete removing the ADF. Note: It may be easier to release the tab closest to the left side first. Repair information 4-249...
Page 516 7526 Installation note: Previous Be sure to attach the ground cable to the screw (see step 6 above). Warning: Whenever you replace the ADF (entire), the flatbed scanner, or the MDC card, perform the “Scanner in Configuration menu. Manual Registration” Next To enter Config Menu: Turn off the multifunction printer.
Page 517: Adf Case Assembly Removal
7526 ADF case assembly removal Previous Remove the ADF front cover. See “ADF front cover removal” on page 4-228. Disconnect the sensor cable (A). Next Go Back Rotate the ADF case assembly until the flattened shaft ends come out of the opening. Repair information 4-251...
Page 518 7526 Remove the sensor cable from the narrow retainer by untwisting the cable wires and easing them out Previous individually. Next Go Back Remove the ADF case assembly. Service Manual 4-252...
Page 519: Adf Skew Sensor Card Removal
7526 ADF skew sensor card removal Previous Remove the ADF front cover. See “ADF front cover removal” on page 4-228. Disconnect all cables, and remove the screw (B) from the skew sensor card (A). Next Go Back Remove the skew sensor card. Repair information 4-253...
Page 520: Adf Closed Cover Flag Removal
7526 ADF closed cover flag removal Previous Remove the ADF front cover. See “ADF front cover removal” on page 4-228. Remove the screw (A). Lift the sensor (B) out of the way. Next Go Back Remove the closed cover flag (C). Service Manual 4-254...
Page 521: Adf Exit Sensor (With Cable) Removal
7526 ADF exit sensor (with cable) removal Previous Remove the ADF motor side cover. See “ADF motor side cover removal” on page 4-232. Disconnect the output sensor cable. Next Go Back Push the cable and connector through the opening (B) in the ADF frame. Repair information 4-255...
Page 522: Adf Hinge (Left And Right) Removal
7526 Remove the ADF pressure plate cover. See “ADF pressure plate cover removal” on page 4-265 Previous Use a flat-blade screwdriver to open the latch (C) the output sensor card. Next Go Back Remove the ADF exit sensor and cable. ADF hinge (left and right) removal The hinges are removed in a similar manner.
Page 523 7526 Installation notes: Previous Note: The hinges are different. The heavy weight hinge has a blue dot on the side and should be installed on the side indicated below. Next Go Back Install the heavy weight hinge with the blue dot in the position indicated below. Replace the four screws (A).
Page 524: Adf Motor Gear Train Removal
7526 ADF motor gear train removal Previous Remove the ADF motor side cover. See “ADF motor side cover removal” on page 4-232. Disconnect the three connectors (A). Next Go Back Remove the two screws (B), and the two ground screw (C). Remove the ADF motor gear train.
Page 525 7526 Installation notes: Previous Place the ADF motor gear train assembly over the clutch motor, and make sure the clutch motor cable (A) is through the housing. Next Go Back Make sure the fork of the clutch assembly (B) is up, and the gear (C) is up. Slide the left side of the ADF motor gear train assembly into place, and then press down on the lever (D) with your finger to make sure the arm of the motor gear assembly slides in below the ledge.
Page 526 7526 Slide the right side of the ADF motor gear train assembly into place, making sure that the fork (E) engages Previous the plate (F). Next Go Back Rotate the gear arm (G) down until the spring (H) latches into the frame. Service Manual 4-260...
Page 527 7526 Route the clutch assembly cable through the cable retainers (J). Previous Replace the four screws (K), making sure that the ground cable (L) is attached to the indicated screw. Next Go Back Reconnect the cables. Replace the covers and ADF input tray. Repair information 4-261...
Page 528: Adf Paper Stop Removal
7526 ADF paper stop removal Previous Pull the paper stop all the way out, and slide out. Next Go Back ADF pick pad removal Open the ADF cover. Lift the pick pad (A), and remove the pad. Note: Although the spring is not part of the ADF pick pad FRU, be careful not to lose the spring. Service Manual 4-262...
Page 529: Adf Pick Pad Spring Removal
7526 ADF pick pad spring removal Previous Remove the ADF pick pad. See “ADF pick pad removal” on page 4-262. Lift out the spring (A). Next Go Back ADF pick roller assembly removal Open the ADF. Rotate the locking lever (A), and remove the ADF pick roller assembly. Repair information 4-263...
Page 530 7526 Installation notes: Previous Install the left side of the ADF pick roller assembly first. Push the assembly flat into the ADF, while turning the gear on the right (A). Next Go Back When the assembly clicks into position, then rotate the locking lever until it is flat against the ADF. Service Manual 4-264...
Page 531: Adf Pressure Plate Cover Removal
7526 Verify that the installation was correct by pressing the ADF pick roller into the ADF door, then pulling the Previous door down until the ADF pick roller assembly smoothly falls forward, without falling out. Next Go Back ADF pressure plate cover removal Open the ADF.
Page 532 7526 Pull the pressure plate cover down, and remove it. Previous Next Go Back Installation note: Set the pressure plate face down over the glass of the flatbed, and close the ADF. The ADF pressure pad will snap into place as the ADF is lowered. Service Manual 4-266...
Page 533: Adf Separator Pad Removal
7526 ADF separator pad removal Previous Open the ADF cover. Lift the ADF separator pad (A), and remove the pad. Note: Cover the separator pad with your other hand to prevent the pad from flying away and getting lost or hitting someone.
Page 534: Carriage Transport Belt With Clip Removal
7526 Carriage transport belt with clip removal Previous Remove the flatbed CCD carrier module. See “Flatbed CCD carrier module removal” on page 4-274. Remove the two screws (A) on either end of the carriage transport belt. Next Go Back Remove the cable from the posts. Installation notes: •...
Page 535: Esd Brush Removal
7526 Be sure to face the toothed edge (A) on the cable as shown. • Previous Next Go Back ESD brush removal Remove the ADF upper case cover. See “ADF upper case cover removal” on page 4-235. Gently pry the brush off the two posts with a flat-bladed screwdriver. Note: One post firmly holds the brush, and the other post is a alignment guide.
Page 536: Flatbed Air Filter Removal
7526 Flatbed air filter removal Previous Press the tab (A) and remove the filter door cover. Next Go Back Remove the filter. Service Manual 4-270...
Page 537: Flatbed Ccd Lamp Assembly Removal
7526 Flatbed CCD lamp assembly removal Previous Remove the flatbed with glass cover. See “Flatbed with glass cover removal” on page 4-239. Next Remove the three screws (A). Go Back Lift the cover (B) and pull it back. Repair information 4-271...
Page 538 7526 Release the two latches (C). Previous Next Go Back Rotate the lamp assembly, and disconnect the cable (D). Service Manual 4-272...
Page 539 7526 Warning: Do not touch the lamp with your hand. Hold it only by the ends, as shown. Previous Next Go Back Remove the lamp assembly. Installation notes: Make sure the four springs (A) are in place. • Repair information 4-273...
Page 540: Flatbed Ccd Carrier Module Removal
7526 Flatbed CCD carrier module removal Previous Remove the flatbed with glass cover. See “Flatbed with glass cover removal” on page 4-239. Remove the two screws (A), and remove the cover. Next Go Back Service Manual 4-274...
Page 541 7526 Disconnect the two CCD cables (B). Previous Warning: Be careful disconnecting and reconnecting the ribbon cables. Ribbon cables can be damaged easily and should be handled carefully. Next Go Back Loosen the ground screw (C), and remove the screw (D). Repair information 4-275...
Page 542 7526 Rotate the clip (E). Previous Next Go Back Lift rod and slide the flatbed CCD carrier module off the rod. Service Manual 4-276...
Page 543 7526 Installation note: Previous Be sure to route the carriage transport belt correctly. Next Go Back Repair information 4-277...
Page 544: Flatbed Cooling Fan Removal
7526 Flatbed cooling fan removal Previous Remove the flatbed with glass cover. See “Flatbed with glass cover removal” on page 4-239. Remove the four (A) screws. Next Go Back Remove the fan. Service Manual 4-278...
Page 545: Flatbed Scanner Removal
7526 Flatbed scanner removal Previous Remove the ADF. See “ADF removal (entire)” on page 4-248. Remove the right cover. See “Right cover removal” on page 4-41. Remove the two screws (A) and the smaller screw (B) on the right side. Next Go Back Repair information...
Page 546 7526 Disconnect the two cables (C) at the connectors on the MDC card (ribbon cable). Previous Note: Be careful disconnecting and reconnecting the ribbon cables. Ribbon cables can be damaged easily and should be handled carefully. Next Go Back Remove the 3 long screws (D) and the two short screws (E). Service Manual 4-280...
Page 547 7526 Slide the flatbed scanner forward, and lift it up to remove it. Previous Next Go Back Warning: Whenever you replace the ADF (entire), the flatbed scanner, or the MDC card, perform the “Scanner in Configuration menu. Manual Registration” To enter Config Menu: Turn off the multifunction printer.
Page 548: Paper Present Led Card Removal
7526 Paper present LED card removal Previous Remove the input tray. See “Input tray removal” on page 4-242. Remove the six screws (A) securing the underside of the input tray. Next Go Back Disconnect the cable at the connector (B). Note: Observe the routing of the cable for re-installation.
Page 549: Scanner Icc Card Removal
7526 Scanner ICC card removal Previous Remove the ADF. See “ADF removal (entire)” Turn the ADF over. Be sure to brace the ADF to prevent damage. Remove the three screws (A) securing the MDC cable cover, and remove the cover. Next Go Back Disconnect the ICC cable (B) from the scanner ICC card.
Page 550: Scanner Icc Cable Removal
7526 Remove the two screws (C), and the ground cables from the screws (D). Previous Note: Be sure to reconnect the ground cables when you reinstall the card. Next Go Back Remove the card. Scanner ICC cable removal Remove the ADF. See “ADF removal (entire)”...
Page 551 7526 Remove the screw (C) securing the cable tie-down, and remove the cable from the tie-down. Previous Remove the cable from the cable restraints (D), and note the routing. Open the clips (E) on the toroid, and set it aside for reinstallation later. Next Go Back Turn the ADF over.
Page 552: Scanner Mdc Card Removal
7526 Scanner MDC card removal Previous Warning: When replacing any one of the following components: • Scanner MDC card • System board Next Only replace one component at a time. Replace the required component, and perform a POR before replacing a second component listed above. If this procedure is not followed, the printer will be rendered inoperable.
Page 553 7526 Disconnect the eight cables (C) from the MCD card Previous Warning: Be careful disconnecting and reconnecting the ribbon cables. Ribbon cables can be damaged easily and should be handled carefully. Next Go Back Remove the three screws (D) from the MDC card cage. Remove the MDC card cage.
Page 554 7526 Remove the three screws (E) securing the MDC card, and remove the MDC card. Previous Next Go Back Warning: Whenever you replace the ADF (entire), the flatbed (entire), or the MDC card, perform the “Scanner in Configuration menu. Manual Registration” To enter Config Menu: Turn off the multifunction printer.
Page 555: High-Capacity Input Tray (Hcit) Option Removals
7526 Previous High-capacity input tray (HCIT) option removals HCIT media tray assembly removal Note: When removing the high-capacity input tray (HCIT) media tray assembly, it is not necessary to remove it Next from the base machine and the caster base. Open the HCIT media tray assembly (A) until it reaches a stop.
Page 556: Hcit Front Tray Cover Removal
7526 HCIT front tray cover removal Previous Note: When removing the high-capacity input tray (HCIT) front tray cover, it is not necessary to remove the HCIT media tray assembly from the base machine and the caster base. Remove the HCIT media tray assembly. See “HCIT media tray assembly removal”...
Page 557: Hcit Rear Cover Removal
7526 HCIT rear cover removal Previous Remove the four screws (A) securing the HCIT rear cover to the drawer. Remove the HCIT rear cover. Next Go Back Repair information 4-291...
Page 558: Hcit Right Cover Removal
7526 HCIT right cover removal Previous Carefully remove the printer or multifunction printer from the high-capacity input tray (HCIT) and remove the HCIT from the caster base. Remove the HCIT media tray assembly. See “HCIT media tray assembly removal” on page 4-289.
Page 559: Hcit Left Cover Removal
7526 HCIT left cover removal Previous Carefully remove the printer or multifunction printer from the high-capacity input tray (HCIT) and remove the HCIT from the caster base. Remove the HCIT media tray assembly. See “HCIT media tray assembly removal” on page 4-289.
Page 560: Feed With Bushing Roller Removal
7526 Feed with bushing roller removal Previous Remove the high-capacity input tray (HCIT) top plate assembly. See “Top plate assembly removal” on page 4-303. Remove the four screws (A) securing the pass thru sensor bracket to the top plate assembly. Note: The bushing may come off when removing the pass thru sensor bracket.
Page 561: Hcit Controller Board Assembly Removal
7526 HCIT controller board assembly removal Previous Remove the HCIT right cover. See “HCIT right cover removal” on page 4-292. Disconnect the seven connectors (A) from the HCIT controller board. Next Go Back Remove the ground screw (B) from the HCIT controller board. Remove the two screws (C) securing the HCIT controller board to the card mount option.
Page 562: Hcit Drawer Slide Assembly Removal
7526 HCIT drawer slide assembly removal Previous The left and right drawer slide assemblies are the same, and only one is in a package. The instructions below are for removing the left slide, but removing the right slide is similar. Remove the HCIT media tray assembly.
Page 563 7526 Release the hooks (B) securing the pass thru sensor to the top plate assembly. Previous Remove the pass thru sensor from the top plate assembly. Release the harness from the clamps (C). Remove the eight screws (D) securing the elevator motor with sensor to the side frame. Next Go Back Remove the elevator motor with sensor.
Page 564: Hcit Pick Tires Removal
7526 HCIT pick tires removal Previous Remove the high-capacity input tray (HCIT) media tray assembly. See “HCIT media tray assembly removal” on page 4-289. Pull the autocompensator pick arm (A) down. Next Go Back Remove the pick tire (B) from the pick roll assembly (C). Repeat for the other pick tire (D).
Page 565: Hcit Slide Assembly With Spring Removal
7526 HCIT slide assembly with spring removal Previous Remove the HCIT controller board assembly. See “HCIT controller board assembly removal” on page 4-295. Disconnect the two springs (A) from the frame. Note: Leave the springs attached to the cam size sensing plate (B) and the actuator switch. Next Slide the cam size sensing plate (B) through the access hole in the rear side frame.
Page 566 7526 Remove the four screws (E) securing the card mount option to the frame. Previous Next Go Back Remove the card mount option. Installation note: Place the card mount option into position, and secure it with the four screws. Reinstall the media size actuator to the card mount option. Reinstall the actuator switch with spring through the inside of the drawer.
Page 567: Photointerrupter Sensor With Cable Assembly Removal
7526 Photointerrupter sensor with cable assembly removal Previous Remove the high-capacity input tray (HCIT) right cover. See “HCIT right cover removal” on page 4-292. Disconnect the photointerrupter sensor cable connector (A) from the HCIT controller board. Next Go Back Turn the drawer rear side down, and use 4.0 mm Allen wrench to remove the four screws (B) securing the counterweight to the rear frame.
Page 568 7526 Remove the screw (C) securing the sensor to the rear frame, and then release the hooks (D). Previous Note: Remove the cable from the restraint, and observe the routing for reinstallation. Next Go Back Remove the photointerrupter sensor with cable assembly. Service Manual 4-302...
Page 569: Top Plate Assembly Removal
7526 Top plate assembly removal Previous Remove the high-capacity input tray (HCIT) right cover. See “HCIT right cover removal” on page 4-292. Disconnect the five connectors (A) from the HCIT controller board. Next Go Back Repair information 4-303...
Page 570 7526 Release the hooks (B) securing the pass thru sensor from the top plate assembly. Previous Remove the fourteen screws (C) securing the top plate assembly to the frame. Next Go Back Remove the top plate assembly. Service Manual 4-304...
Page 571: Connector Locations
7526 5. Connector locations Previous Locations—printer base Next Go Back Connector locations...
Page 572: Connectors
7526 Previous Connectors System board Next Go Back Service Manual...
Page 573 7526 Previous System board listing “System board” on page 5-2. Connector Pin # Signal Pin # Signal Next Ground FBR_LVDS_MCLK+ AIO motor driver control (MDC) FBR_LVDS_MCLK- Ground Go Back FBR_LVDS_RXCLK- FBR_LVDS_RXCLK+ Ground FBR_LVDS_RXIN2+ FBR_LVDS_RXIN2- Ground FBR_LVDS_RSIN1+ FBR_LVDS_RXIN1- Ground FBR_LVDS_RXIN0- FBR_LVDS_RXIN0+ Ground FBR_AFE_NRST_R Ground...
Page 574 7526 System board listing (continued) Previous “System board” on page 5-2. Connector Pin # Signal Pin # Signal Ground Internal Service Port (ISP) Next USBOUT+ USBOUT- Ground Go Back USBIN+ USBIN- Ground RESET +5 V dc I2C_DAT +5 V dc I2C_CLK +5 V dc Ground...
Page 575 7526 System board listing (continued) Previous “System board” on page 5-2. Connector Pin # Signal Pin # Signal D_PHY_TX+ Network Next D_PHY_TX- D_PHY_RD+ V_ANA2.5 Go Back V_ANA2.5 D_PHY_RD V_BOBSMITH +2.5V_PHY_I PHYLED0 +2.5V_PHY_I PHYLED1 PHYLED0 +2.5V_PHY_I PHYLED1 +2.5V_PHY_I +5 V dc +5 V dc or Ground FANSENSE JBIN1...
Page 576 7526 System board listing (continued) Previous “System board” on page 5-2. Connector Pin # Signal Pin # Signal JCARTP1 V48_CART1_WIND_W Cartridge 1/fuser motors Next V48_CART1_WIND_V V48_CART1_WIND_U V24_FUSER2_W Go Back V24_FUSER2_V V24_FUSER2_U JCARTP2 V48_CART3_WIND_W Cartridge 2/cartridge 3 motors V48_CART3_WIND_V V48_CART3_WIND_U V48_CART2_WIND_W V48_CART2_WIND_V V48_CART2_WIND_U JCARTS1...
Page 577 7526 System board listing (continued) Previous “System board” on page 5-2. Connector Pin # Signal Pin # Signal JDX1 VS12_DUP_ENC_LED Duplex / MFP BDC motor drive Next S_DUP_MPF_ENC Ground V24_DUP_MPF_M- Go Back V24_DUP_MPF_M+ JFAN1 Ground System fan V18_FAN_MTR S_FAN_FG JFDPCK1 VS12_FEED_ENC V24_PICK_M+ Paper Feed/Waste Toner Motor...
Page 578 7526 System board listing (continued) Previous “System board” on page 5-2. Connector Pin # Signal Pin # Signal JHVPS1 Ground +25VD High-voltage power supply Next C-DEVPWM M-DEVPWM Y-DEVPWM K-DEVPWM Ground +5V_SW Go Back TONER_C TONER_M TONER_Y TONER_K GD_HV_CHRG_PWM V_SNS GD_HV_XFR_PWM_C C_SRVO_OUT GD_HV_XFR_PWM_M M_SRVO_OUT...
Page 579 7526 System board listing (continued) Previous “System board” on page 5-2. Connector Pin # Signal Pin # Signal JOPT1 +25VE Ground Option port Next S_OPT_RXR Ground S_INPUT_FDT VS24_OPT_5V Ground S_OPT_TXR Go Back JPH1 VDO_SYNC_C Printhead VDO_PHR_OK VDO_SYNC_B VDO_LENA TG_VDO_SHADE_D VS12_+3.3VPH TG_VDO_SHADE_C VS12_JPH1 TG_VDO_SHADE_B...
Page 580 7526 System board listing (continued) Previous “System board” on page 5-2. Connector Pin # Signal Pin # Signal JPH1 D_VDO_B+ Printhead Next D_VDO_B- (continued) Ground D_VDO_A2+ Go Back D_VDO_A2- Ground D_VDO_A+ D_VDO_A- Ground I2C_CLK_PH TG_VDO_LADJ_CD I2C_DATA_PH TG_VDO_LADJ_AB JSB1 S_SB_Y Cartridge SB Ground S_SB_C Ground...
Page 581 7526 System board listing (continued) Previous “System board” on page 5-2. Connector Pin # Signal Pin # Signal JTPS1 V12_LED_ON VS12_3_3V Toner Patch Sensor Next GD_TPS_SNS GD_TPS_PWM1 GD_TPS_SNS_RTN GD_TPS_TNR_SNS Ground I2C_CLK_TB Go Back I2C_DATA_TB GD_TPS_THERM_SNS JTRAY1 Ground Tray 1 input, NMT sensors S_TRAY_INPUT VS12_TRAY_INPT_LED VS12_TRAY+5V_NMT...
Page 582 7526 Previous Next Go Back Service Manual 5-12...
Page 583: Preventive Maintenance
• Damaged, missing, or altered covers, especially in the area of the top cover and the power supply cover • Possible safety exposure from any non-Lexmark attachments • Lubrication specifications Lubricate only when parts are replaced or as needed, not on a scheduled basis. Use of lubricants other than those specified can cause premature failure.
Page 584: Maintenance
7526 Previous Maintenance Cleaning the scanner glass Clean the scanner glass if you encounter print quality problems, such as streaks on copied or scanned images. Next Slightly dampen a soft, lint-free cloth or paper towel with water. Open the scanner cover. Go Back White underside of the ADF cover White pressure plate cover...
Page 585: Cleaning The Adf Parts
7526 Cleaning the ADF parts Previous Clean the ADF parts periodically to maintain optimal printing performance. Residue on the ADF parts may cause print quality issues and false 290–294 paper jam messages. Turn the printer off. Next Slightly dampen a soft, lint-free cloth with water. Open the ADF cover.
Page 586 7526 Wipe the entire surface under the ADF cover, including the two small white rollers. Previous Wipe the separator pad, and then wipe the pick pad. Next Go Back Pull the flap up as shown, and then wipe the sensor behind it. Close the flap, and then close the ADF cover.
Page 587: Cleaning The Printhead Lenses
7526 Cleaning the printhead lenses Previous Clean the printhead lenses when you encounter print quality problems. Turn the printer off, and disconnect the power cord. Open the upper front door, and then open the lower front door. Next Warning: Potential Damage—To avoid overexposing the photoconductors, do not leave the front doors open for more than 10 minutes.
Page 588 7526 Previous Next Go Back Service Manual...
Page 589: Parts Catalog
Model information used in the parts catalog: • Abbreviation Machine Model name Description used type/model 7526-235 Lexmark X734de 4-in-1 Color MFP 7526-275 Lexmark X734de 4-in-1 Color MFP, with fax modem 7526-295 Lexmark X734de 4-in-1 Color MFP, with fax modem 7526-436...
Page 590: Assembly 1: Covers-Printer
7526 Assembly 1: Covers—printer Previous Next Go Back Service Manual...
Page 591 7526 Assembly 1: Covers—Printer Previous Units/ Units/ Index Description mach 1—1 40X5164 Output bin extension cover Next 40X5175 Top cover assembly, including top access cover springs 40X5276 Top access cover springs 40X5174 Rear cover Go Back 40X5121 Top access cover sensor Parts package (top access cover) (P/N 40X5180), including A—Link (top access cover) (2) B—Link (top cover) (2)
Page 592: Assembly 2: Front
7526 Assembly 2: Front Previous Next Go Back Service Manual...
Page 593 7526 Assembly 2: Front Previous Units/ Units/ Index Description mach 2—1 40X8110 Fuser assembly, 115 V Next 40X8111 Fuser assembly, 230 V 40X8112 Fuser assembly, 100 V Printer pad, included in parts packet, screws (P/N 40X5136) Go Back 40X1446 Right bellcrank assembly, with spring 40X5132 Parts packet, MP feeder/duplex drive, including: •...
Page 594: Assembly 3: Right
7526 Assembly 3: Right Previous Next Go Back Service Manual...
Page 595 7526 Assembly 3: Right Previous Units/ Units/ Index Description mach f3–1 40X5290 EP drive assembly Next 40X5182 Low-voltage power supply 40X5126 Motor driver card 40X5131 MP feeder/duplex motor Go Back 40X5128 24 V interlock switch 40X5127 5 V interlock switch Parts catalog...
Page 596: Assembly 4: Rear
7526 Assembly 4: Rear Previous Next Go Back Service Manual...
Page 597 7526 Assembly 4: Rear Previous Units/ Units/ Index Description mach 4—1 40X5123 Printhead assembly Next 40X5107 System board support shield 40X5200 System board (network), 235, 275, 295 40X5271 System board (network), 436, 476, 496, 636, 676 Go Back 40X8856 CPU fan 40X0269 Power cord—USA, Canada, Bolivia, Peru 40X0288...
Page 598: Assembly 5: Left
7526 Assembly 5: Left Previous (4 places) (4 places) Next Go Back (4 places) (4 places) (4 places) 1G (4 places) (8 places) Service Manual 7-10...
Page 599 7526 Assembly 5: Left Previous Units/ Units/ Index Description mach 5—1 40X5137 Contact springs kit, including: Next • A—Torsion PCD contact spring • B—Torsion CR contact spring • C—Contact spring cap • D—Charge roll contact spring Go Back • E—HVPS TAR contact spring •...
Page 600: Assembly 6: Top
7526 Assembly 6: Top Previous Next Go Back Units/ Units/ Index Description mach 6—1 40X5109 Cooling fan 40X5122 Color on demand assembly 40X5130 Top cover camshaft assembly 40X5108 Cartridge cooling fan Service Manual 7-12...
Page 601: Assembly 7: Cable Parts Packet
7526 Assembly 7: Cable parts packet Previous Units/ Units/ Index Description Next mach 40X5183 Cables, including • A—Cartridge motor 1/fuser cable (1) Go Back • B—Fuser AC cable (1) • C—Fuser DC cable (1) • D—MP feeder/duplex motor cable (1) •...
Page 602: Assembly 8: Covers-Scanner
7526 Assembly 8: Covers—scanner Previous Next Go Back Service Manual 7-14...
Page 603 7526 Assembly 8: Covers—Scanner Previous Units/ Units/ Index Description mach 8—1 40X5196 ADF front case cover Next 40X5202 ADF upper motor side cover 40X5192 ADF document input tray 40X5193 ADF paper stop Go Back 40X5194 Pressure plate cover 40X5198 Flatbed filter door cover 40X5218 Flatbed air filter 40X5207...
Page 604: Assembly 9: Automatic Document Feeder (Adf)
7526 Assembly 9: Automatic document feeder (ADF) Previous Next Go Back Service Manual 7-16...
Page 605 7526 Assembly 9: Automatic document feeder (ADF) Previous Units/ Units/ Index Description mach 9—1 40X5190 ADF, complete Next Parts packet—cables (40X5217) A—ADF input tray cable B—ADF case cable Note: Additional cables listed in assembly 10 (5 total). Go Back 40X5210 Paper present LED card 40X5209 ADF hinge (left or right)
Page 606: Assembly 10: Flatbed Scanner
7526 Assembly 10: Flatbed scanner Previous Next Go Back Service Manual 7-18...
Page 607 7526 Assembly 10: Flatbed scanner Previous Units/ Units/ Index Description mach 10—1 40X5167 Flatbed scanner, complete Next 40X5215 Cave LED card 40X5216 Flatbed cave LED cover (clear) 40X5213 Flatbed CCD lamp assembly Go Back 40X5212 Flatbed CCD carrier module, including lamp assembly 40X5214 Carriage transport belt with clip 40X5219...
Page 608: Assembly 11: Optional 550-Sheet Media Drawer And Tray
7526 Assembly 11: Optional 550-sheet media drawer and tray Previous Next Go Back Units/ Units/ Index Description 11—1 40X5140 550-sheet tray option (drawer and tray assembly) 40X5168 Pick tire (550-sheet tray) 40X5141 550-sheet tray assembly Service Manual 7-20...
Page 609: Assembly 12: Optional Special Media Tray Assembly
7526 Assembly 12: Optional special media tray assembly Previous Next Go Back Units/ Units/ Index Description opt. 12—1 40X5142 Special media assembly, including tray 40X5152 Pick tire (550-sheet drawer) 40X5143 Special media tray assembly Parts catalog 7-21...
Page 610: Assembly 13: Optional High-Capacity Input Option (Hcit)
7526 Assembly 13: Optional high-capacity input option (HCIT) Previous Next Go Back Service Manual 7-22...
Page 611 7526 Assembly 13: Optional high-capacity input option (HCIT) Previous Units/ Units/ Index Description option 13—1 40X5157 Top plate assembly Next 40X5168 HCIT pick tire 40X5156 Feed with bushing 40X5149 HCIT rear cover Go Back 40X4585 Tray latch with spring 40X5159 HCIT controller card assembly 40X4587 Slide assembly with springs...
Page 612: Assembly 14: Options And Features
7526 Assembly 14: Options and features Previous Next Go Back Service Manual 7-24...
Page 613 Traditional Chinese font card 40X5970 Simplified Chinese font card 40X5972 Japanese font card 40X0047 Bar code and Forms card 40X5952 Lexmark PrintCryption™ card 40X4826 MarkNet™ N8120 10/1000 40X4827 MarkNet N8130 10/100 fiber 40X4823 Parallel 1284-B interface card adapter 40X4819 Serial interface card adapter 40X4822 80.0 GB hard drive assembly...
Page 614 7526 Previous Next Go Back Service Manual 7-26...
Page 615: Index
7526 Index Previous bezel Numerics Next parts catalog 1xx service error codes – 2-18 2-20 removal 4-32 24 V interlock switch bin full sensor assembly, removal 4-60 parts catalog Black Only Mode 3-32 Go Back removal 4-54 black only retract (BOR), see color on demand assembly 2xx paper jam codes –...
Page 616 7526 Disk Encryption Hardware Tests 3-44 Previous Download Emuls Button Test 3-34 3-15 Duplex Gloss DRAM Test 3-43 3-16 Energy Conserve Panel Test 3-35 3-15 Enforce Color Order Motor Tests 3-41 Env Prompts Align Motor Test 3-42 3-12 Next Event Log Fuser 3-33 3-12...
Page 617 7526 parts catalog fuser AC cable Previous removal removal 4-89 4-115 service check fuser assembly 2-48 2-50 Energy Conserve motor test 3-35 3-12 Enforce Color Order parts catalog 3-41 engine setting removal 3-24 4-114 Next Env Prompts Reset Fuser Cnt 3-42 3-31 error codes and messages...
Page 618 7526 paper tray Previous parts catalog maintenance, scheduled parts catalog media automatic document feeder (ADF) 7-16 error jam locations 3-57 cable parts packet 7-13 input and output capacities 1-10 covers—printer input and output sizes and types 1-11 Next covers—scanner 7-14 paper path flatbed scanner 7-18...
Page 619 7526 Prt Mono Pg Count flatbed with glass cover 3-24 4-239 Previous Prt Quality Pgs input tray 4-242 configuration menu scanner front cover 3-32 4-243 diagnostic menu scanner left cover 3-14 4-244 scanner rear cover 4-245 scanner right cover 4-246 Quick Disk Test Next 3-22...
Page 620 7526 printer pad 144.xx—motor error 4-146 2-50 Previous printhead 145.xx, 906.05–906.08—motor error 4-147 2-55 right bellcrank 146.xx—motor error 4-164 2-53 scanner front cover 155.xx—motor error 4-243 2-56 scanner ICC cable 156.xx—motor error 4-284 2-58 2-59 scanner ICC card 900.xx System software 4-283 2-103 Next...
Page 621 7526 Previous test pages print quality test pages 3-14 3-32 Quick Test quick test (duplex) 3-18 toner level sensor Next parts catalog 7-10 removal 4-174 Toner Patch Sensing (TPS) 3-40 Go Back tools required 1-15 top access cover parts catalog removal 4-43 sensor...
Page 622 7526 Previous Next Go Back Service Manual...
Page 623: Part Number Index
7526 Part number index Previous Description Page Next 40X0047 Bar code and Forms card - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7-25 40X0088 Card for IPDS and SCS/TNe - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
Page 624 7526 40X5137 Contact springs kit - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7-11 Previous 40X5140...
Page 625 Lexmark PrintCryption card - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
Page 626 7526 Previous Next Go Back Service Manual I-12...

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X738dte X738de X736deX734de

Lexmark X734de Service Manual

Notices and Safety Information

Preface

General Information

Diagnostic Information

Diagnostic Aids

Repair Information

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Summary of Contents for Lexmark X734de