Page 1 Lexmark C734, C736 5026 • 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
5026 Table of contents Notices and safety information ......... . . ix Laser notice .
Page 4 5026 160.xx, 161.xx—Motor Error (option tray 2) service check ......2-54 162.xx, 163.xx—Motor Error (option tray 3) service check .
Page 5 5026 920.18—POST (power-on self test)—Cartridge motor 3 not connected error service check . 2-107 920.19—POST (power-on self test)—Transfer module stepper motor not connected error service check ............... . 2-108 920.21—POST (power-on self test)—24 V power supply failure error service check .
Page 6 5026 Motor Calibration ............. . . 3-29 Paper Prompts .
Page 7 5026 Duplex reference edge guide assembly removal ........4-66 Electrophotographic (EP) drive assembly removal .
Page 8 5026 Preventive maintenance ............. . . Safety inspection guide .
Page 9: Notices And Safety Information
5026 Notices and safety information The following laser notice labels may be affixed to this printer. Laser notice The printer 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 10 5026 Avisos sobre el láser Se certifica que, en los EE.UU., esta impresora cumple los requisitos para los productos láser de Clase I (1) establecidos en el subcapítulo J de la norma CFR 21 del DHHS (Departamento de Sanidad y Servicios) y, en los demás países, reúne todas las condiciones expuestas en la norma IEC 60825-1 para productos láser de Clase I (1).
Page 11 5026 Laserilmoitus Tämä tulostin on sertifioitu Yhdysvalloissa DHHS 21 CFR Subchapter J -standardin mukaiseksi luokan I (1) - lasertuotteeksi ja muualla IEC 60825-1 -standardin mukaiseksi luokan I lasertuotteeksi. Luokan I lasertuotteita ei pidetä haitallisina. Tulostimen sisällä on luokan IIIb (3b) laser, joka on nimellisteholtaan 5 mW:n galliumarsenidilaser ja toimii 770 - 795 nanometrin aallonpituuksilla.
Page 12 5026 Avís sobre el Làser Segons ha estat certificat als Estats Units, aquesta impressora compleix els requisits de DHHS 21 CFR, apartat J, pels productes làser de classe I (1), i segons ha estat certificat en altres llocs, és un producte làser de classe I que compleix els requisits d’IEC 60825-1.
Page 13 5026 xiii Notices and safety information...
Page 14 5026 Service Manual...
Page 15: Lithium Warning
5026 Lithium warning CAUTION 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. Safety information • The safety of this product is based on testing and approvals of the original design and specific components.
Page 16 5026 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. • Die Wartungsinformationen für dieses Produkt sind ausschließlich für die Verwendung durch einen Wartungsfachmann bestimmt.
Page 17 5026 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 seguretat si s'utilitzen peces de recanvi no autoritzades. •...
Page 18: Preface
5026 Preface This manual contains maintenance procedures for service personnel. It is divided into the following chapters: General information contains a general description of the printer and the maintenance approach used to repair it. Special tools and test equipment, as well as general environmental and safety instructions, are discussed.
Page 19: General Information
5026 1. General information The Lexmark™ C73x family of color laser printers. Models Machine type Printer name Description and model Lexmark C734n 5026-210 Network Lexmark C734dn 5026-230 Duplex and network Lexmark C734dnw 5026-280 Duplex, network, and wireless Lexmark C736n 5026-410...
Page 20: Media Options
The C734 and C736 printers support the 550-sheet drawer, special media drawers, and 2000-sheet high- capacity input tray. The Lexmark C734 printers support up to three input options, while the C736 printers support up to four input options. The options can include any combination of 550 sheet drawers and 550 sheet Specialty Media Drawers, with a maximum of one 2000 sheet drawer (always at the lowest position.) A caster...
Page 21: Printer Specifications
Printer specifications Dimensions The following table contains the dimensions and weight for each of the respective printer models. This does not include packaging. Height Width Depth Weight Lexmark C734/C736 Basic printer (cartridges only) 450mm 435mm 400mm 25.7kg (17.7 in) (17.1 in) (15.7 in)
Page 22: Clearances
5026 Clearances Number Description Clearance Rear 100 mm (3.9 in.) Right side 100 mm (3.9 in.) Front 400 mm (15.7 in.) Left side 150 mm (5.9. in.) Above 150 mm (5.9 in.) Memory Memory All models Standard memory—The standard RAM is soldered onto the system board. Memory size 256MB Optional memory—Optional DIMM (Dual Inline Memory Module) is a card that can be plugged into an...
Page 23: Expansion Opportunities
5026 Expansion opportunities Lexmark Lexmark Lexmark Lexmark C734n, C734dw C736n C736dn C734dn Interface card expansion slots Code Enhancement Socket (application solution firmware) Hard disk Interface (for optional hard disk) Resolution The following resolutions are available: • 4800CQ (default resolution) •...
Page 24: Electrical And Power Specifications
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). Lexmark Lexmark Lexmark Lexmark...
Page 25: Acoustic Specifications
1988-04-15—Accoustics Declared noise emission values of computer and business equipment. 1-Meter average Declared sound power Operating mode bystander sound level at 4800 CQ pressure at 4800 CQ Lexmark C734/C736 Mono printing (full speed) 54 dBA Color printing (full speed) 54 dBA Duplex printing (full speed) 54 dBA...
Page 26: Media Specifications
Transparencies • Use letter or A4-size transparencies for color laser printers only. • See Ordering Information for the recommended transparencies for the Lexmark C734/C736 laser printers. • Do not use inkjet transparencies. Labels Labels should be selected using guidelines found in the User's Guide or the Card Stock and Label Guide, and tested for acceptability.
Page 27 5026 Using recycled paper and other office papers 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 28: 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 Support by model Function Lexmark C734n/dn/dw Lexmark C736n/dn Standard input sources Primary tray capacity (sheets)
Page 29: Input And Output Sizes And Types
These sizes are accessible using Universal Size setting. Lower feed reliability may be encountered when feeding non-standard size media. The maximum length supported by the Lexmark C734 is 914.4mm (36 in). These sizes are accessible using Other Envelope setting. 1-11...
Page 30 These sizes are accessible using Universal Size setting. Lower feed reliability may be encountered when feeding non-standard size media. The maximum length supported by the Lexmark C734 is 914.4mm (36 in). These sizes are accessible using Other Envelope setting. 1-12...
Page 31: Paper Guidelines
5026 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) 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) Short grain...
Page 32 5026 Grain direction—Grain refers to the alignment of the paper fibers in a sheet of paper. Grain is either grain long, 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 33: Tools Required For Service
5026 Storing paper 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 humidity between 40 and 60%.
Page 34 5026 NVRAM Nonvolatile Random Access Memory Photoconductor Picture element (pixel) Power-On Reset POST Power-On Self Test Raster Imaging Processor SDRAM Synchronous Dual Random Access Memory V ac Volts alternating current V dc Volts direct current Yellow 1-16 Service Manual...
Page 35: Diagnostic Information
5026 2. Diagnostic information Start CAUTION Remove the power cord from the electrical outlet before you connect or disconnect any cable or electronic card or assembly for personal safety and to prevent damage to the printer. CAUTION Use the handholds on the side of the printer. Make sure your fingers are not under the printer when you lift or set the printer down.
Page 36: Operator Panel And Menus
5026 Operator panel and menus Operator panel Display Select Navigation arrow button buttons USB direct Numeric port keypad Menu button Indicator light Back button Cancel/ Stop Buttons and light description Button or light Function Display The display shows messages and pictures that communicate the status of the printer.
Page 37: Administrative Menus
5026 Button or light Function Back Press to return to the previous screen. Note: This button is only active if appears on the top left of the screen. USB direct port Insert a USB flash drive to send data to the printer. Numeric keypad Consists of the numbers 0–9, a backspace button, and a pound (#) button.
Page 38: Power-On Self Test (Post) Sequence
5026 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: The LED turns on. The main fan turns on. The operator panel turns on.
Page 39: Symptom Tables
5026 Symptom tables Printer symptom table Symptom Action Dead printer Go to “Dead printer service check” on page 2-122. Operator panel—one or more buttons do Go to “One or more operator panel buttons fail” on not work. page 2-128. Operator panel—display is blank. Printer Go to “Operator panel display blank, five beeps, and LED is sounds five beeps.
Page 40: User Status And Attendance Messages
5026 User status and attendance messages Error code Action Close Front Door Close the front door securely. If you continuously get this error, then either the 24 V interlock switch or the 5 V interlock switch is bad. See “24 V interlock switch service check” on page 2-119 “5 V interlock switch service check”...
Page 41 5026 Error code Action Load Manual <type> If paper loaded is in the manual feeder, the job continues. If paper is not in the feeder, <size> pressing Select indicates to the printer it should search for a source with the proper type and size.
Page 42 5026 Error code Action 3x through 8x attendance messages 31 Defective or Missing • Reseat the specified toner cartridge. <color> Cartridge • Inspect the smart chip card contacts (A) for damage, contamination or positioning error. If damaged, contact your next level of service. •...
Page 43 5026 Error code Action 37 Insufficient memory • Select 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 “System board removal”...
Page 44 5026 Error code Action 53 Unformatted Flash • Select 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 “System board removal”...
Page 45 1. Turn off and unplug the printer. Attached 2. Remove options until the supported number of options for that model. Models C734 supports three options and models C736 supports four options. 3. Plug in the printer, and turn it on.
Page 46 5026 Error code Action 80 Fuser Life Warning • Select 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 47 5026 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 48 5026 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 49 5026 Error code Action • Show Me, View Supplies, and Tell Me More displays additional information. 88.xx <color> Cartridge • Replace the specified toner cartridge. • Select Continue to clear the message and continue printing. • If the problem persists, replace the system board. See “System board removal”...
Page 50: Error Codes And Messages
5026 Error codes and messages Error code Description Action 1xx service error codes 110.01–110.07Mirror A mirror motor error has occurred. • POR the printer. Motor Error • If the error message persists, go to “110.xx— Mirror motor service check” on page 2-37.
Page 51 5026 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 2-48. 147.09–147.25 Aligner motor has failed. • POR the printer. Motor Error •...
Page 52 5026 Error code Description Action 168.xx HCIT elevator motor error. • POR the printer. Motor Error • If the error message persists, go to “168.xx— Motor (HCIT elevator) error service check” on page 2-58. 199.xx Unrecoverable RIP software error. • POR the printer. Software Error •...
Page 53 5026 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, •...
Page 54 5026 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 55 5026 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 56 5026 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 57 5026 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 • If clearing a paper jam does not fix the problem, go to “146.xx, 148.xx—Motor (MPF/duplex) •...
Page 58 5026 Error code Description Action 242.05 Tray 2 picked, but page failed to reach 1. Ensure proper media is set for the type of paper the option sensor in time. used in tray 2. 2. Fan media, and stack flat in tray 2. Possible causes: 3.
Page 59 5026 Error code Description Action 242.29 Tray 2 is not ready or missing while • Make sure that tray 2 is correctly inserted. printing. • Go to “242.29—Paper Jam service check” on page 2-74. Possible cause is paper tray 2 assembly failure 243.02 Tray 3 pass thru sensor made at...
Page 60 5026 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 61 5026 Error code Description Action 244.05 Tray 4 picked, but page failed to reach 1. Ensure proper media is set for the type of paper the option sensor in time. used in tray 4. 2. Fan media, and stack flat in tray 4. Possible causes: 3.
Page 62 5026 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 2-85. Possible cause is paper tray 4 assembly failure.
Page 63 5026 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 64 5026 Error code Description Action 9xx service error messages 900.00–900.99 Unrecoverable RIP software error. • POR the printer. Software Error • If the error message persists, replace the (except 900.05) system board. See “System board removal” on page 4-139. 900.05 Transfer module has failed •...
Page 65 5026 Error code Description Action 920.04 Fuser motor not connected. • POR the printer. POST Error • If the error message persists, go to “920.04— POST (power-on self test) error service check” on page 2-94. 920.05 Printhead motor not connected. •...
Page 66 5026 Error code Description Action 920.16 Bad printhead NVRAM data. • POR the printer. POST Error • If the error message persists, go to “920.16— POST (power-on self test)—Bad printhead NVRAM data error service check” on page 2-105. 920.17 Output bin cable not connected. •...
Page 67 5026 Error code Description Action 920.30 Option sensor disconnected. Use the following list to determine which service POST Error check to use: • Tray 2—Go to “242.02—Paper Jam service check” on page 2-68. • Tray 3—Go to “243.02—Paper Jam service check”...
Page 68 5026 Error code Description Action 947.01 Yellow transfer roll has failed. • POR the printer. Transfer Roll • If the error message persists, go to “945.xx, 947.xx—Transfer roll error service check” on page 2-114. 947.02 Cyan transfer roll has failed. •...
Page 69 5026 Error code Description Action 959.00–959.05 Invalid engine code • POR the printer. Engine Code Error • If the error message persists, download the engine code again. • POR the printer again. • If the error message persists, replace the system board.
Page 70 5026 Error code Description Action 983.00–983.99 Invalid command parameter by • POR the printer. <device> specified device. • If the error message persists, replace the Communications Error system board. See “System board removal” on page 4-139. 984.00–984.99 Invalid command parameter by •...
Page 71: Service Checks
5026 Service checks 110.xx—Mirror motor service check CAUTION—POTENTIAL EYE INJURY: Laser Radiation—Avoid eye exposure to the beam. Always point the printhead laser down into the packaging as shown. The laser can cause damage to your eyesight or the eyesight of others.
Page 72: Xx, 112.Xx, 113.Xx, And 114.Xx-Printhead Error Service Check
5026 Step Questions / actions Perform the printhead verification to check Replace the printhead. See Replace the system board. whether the new printhead will solve the “Printhead removal, “System board problem. See “Printhead verification” on installation, and removal” on page 4-139.
Page 73: Xx-Fuser Error Service Check
5026 Step Questions / actions Measure the resistance across fuse F13 (A) Replace the system board. Go to step 4. on the system board. “System board removal” on page 4-139. JBIN1 JFUSER1 JHVPS1 JBLW1 JSB1 JFAN1 JBOR1 JMIRR1 JOPP1 JCVR1 JLVPS2 JCARTP1 JCARTS1...
Page 74 5026 Step Questions / actions 1. Remove the fuser. See “Fuser removal” Replace the appropriate Go to step 3. on page 4-90. cable. See “Fuser AC cable removal” on 2. Check the AC and DC autoconnects on page 4-91 “Fuser DC both the fuser and the printer for damage.
Page 75 5026 Step Questions / actions Remove the rear frame cover. See“Rear Replace the fuser DC Go to step 6. frame cover removal” on page 4-33. Check cable.See “Fuser DC the cable in connector JFUSER1 (A) (fuser cable removal” on DC cable) for proper connection to the system page 4-92.
Page 76 5026 Step Questions / actions Check for the following continuity between the Go to step 9. Replace the fuser DC DC autoconnect JFUSER1 on the system cable. See “Fuser DC board. cable removal” on page 4-92. DC auto- JFUSER1 connect Pin 9 Pin 9 Pin 10...
Page 77: Xx, 920.02-Autocomp (Tray 1) Motor Error Service Check
5026 140.xx, 920.02—Autocomp (tray 1) motor error service check Step Questions / actions Turn the printer off, and then remove the rear Replace the paper pick Go to step 2. frame cover. See “Rear frame cover mechanism. See “Paper removal” on page 4-33.
Page 78: Xx, 906.01-906.04-Motor (Fuser) Error Service Check
5026 142.xx, 906.01–906.04—Motor (fuser) error service check Step Questions / actions 1. Turn the printer off. Replace the cartridge Go to step 2. motor1/fuser motor cable. 2. Remove the rear frame cover. See “Rear “Cartridge motor 1/ frame cover removal” on page 4-33.
Page 79: Xx-Motor (Ep Drive Assembly Top Cartridge 1 Motor) Error Service Check
5026 143.xx—Motor (EP drive assembly top cartridge 1 motor) error service check Step Questions / actions 1. Turn the printer off. Replace the cartridge Go to step 2. motor 1/fuser cable. See 2. Remove the rear frame cover. See “Rear “Cartridge motor 1/fuser frame cover removal”...
Page 80: Xx-Motor (Ep Drive Assembly Middle Cartridge) Error Service Check
5026 144.xx—Motor (EP drive assembly middle cartridge) error service check 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 “Rear motor 2/3 cable removal” frame cover removal”...
Page 81: Xx-Motor (Ep Drive Assembly Bottom Cartridge) Error Service Check
5026 145.xx—Motor (EP drive assembly bottom cartridge) error service check 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 “Rear motor 2/3 cable removal” frame cover removal”...
Page 82: Xx, 148.Xx-Motor (Mpf/Duplex) Error Service Check
5026 146.xx, 148.xx—Motor (MPF/duplex) error service check Step Questions / actions Is the front door assembly damaged? Replace the front door Go to step 2. assembly. See “Front door assembly removal” on page 4-79. Is the multipurpose feeder damaged? Replace input tray. Go to step 3.
Page 83 5026 Step Questions / actions Remove the right cover. See “Right cover Replace the MPF/duplex Go to step 5. removal” on page 4-37. Check the MP motor cable. See feeder/duplex motor cable for proper “Multipurpose feeder connection to the MPF/duplex motor, pinch (MPF)/duplex motor points for the cable, and damage to the cable cable removal”...
Page 84: Xx, 920.01-Aligner Motor Error Service Check
5026 147.xx, 920.01—Aligner motor error service check 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 “Rear pick mechanism frame cover removal” on page 4-33.
Page 85: Xx-Cam Motor Error Service Check
5026 155.xx—Cam motor error service check Step Questions / actions 1. Turn the printer off. Replace the motor driver Go to step 2. cable. See “Motor driver 2. Remove the rear frame cover. See “Rear cable removal” on frame cover removal” on page 4-33.
Page 86 5026 Step Questions / actions Check the transport motor cable from the cam Replace the transport Go to step 4. motor to the motor driver card for poor motor cable. See connections or damage. “Transport cable removal” on page 4-156. Is the cable damaged? Measure the resistance across fuses F12 (A) Replace the system board.
Page 87: Xx-Cod (Color On Demand) Motor Service Check
5026 156.xx—COD (Color On Demand) motor service check Step Questions / actions 1. Turn the printer off. Replace the COD Go to step 2. assembly. See “Color on 2. Remove the rear frame cover. See “Rear demand assembly frame cover removal” on page 4-33.
Page 88: Xx, 161.Xx-Motor Error (Option Tray 2) Service Check
5026 160.xx, 161.xx—Motor Error (option tray 2) service check Step Questions / actions 1. Turn the printer off. Problem resolved. Go to step 2. 2. Reseat option tray 2. 3. Bring the printer up in Diagnostics Menu (turn off the printer, press and hold .
Page 89: Xx, 163.Xx-Motor Error (Option Tray 3) Service Check
5026 162.xx, 163.xx—Motor Error (option tray 3) service check Step Questions / actions 1. Turn the printer off. Problem resolved. Go to step 2. 2. Reseat option tray 3. 3. Bring the printer up in Diagnostics Menu (turn off the printer, press and hold .
Page 90: Xx, 165.Xx-Motor Error (Option Tray 4) Service Check
5026 164.xx, 165.xx—Motor Error (option tray 4) service check Step Questions / actions 1. Turn the printer off. Problem resolved. Go to step 2. 2. Reseat option tray 4. 3. Bring the printer up in Diagnostics Menu (turn off the printer, press and hold .
Page 91: Xx, 167.Xx-Motor Error (Option Tray 5) Service Check
5026 166.xx, 167.xx—Motor Error (option tray 5) service check Step Questions / actions 1. Turn the printer off. Problem resolved. Go to step 2. 2. Reseat option tray 5. 3. Bring the printer up in Diagnostics Menu (turn off the printer, press and hold .
Page 92: Xx-Motor (Hcit Elevator) Error Service Check
5026 168.xx—Motor (HCIT elevator) error service check 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 drawer. 1. Turn the printer off. Problem resolved.
Page 93: 250.03-Paper Jam Error Service Check
5026 200.11, 250.03—Paper Jam error service check Step Questions / actions Open the front access door. Turn the Go to step 2. Replace the transport belt. transport belt gear clockwise. “Transfer module removal” on page 4-154. Did the transport belt move? 1.
Page 94: 201.31-Paper Jam Error Service Check
5026 201.06, 201.31—Paper Jam error service check Step Questions / actions Open the front access door. Turn the Go to step 2. Replace the transport transport belt gear clockwise. module. See “Transfer module removal” on page 4-154. Did the transport belt move? Bring the printer up in Diagnostics Menu (turn Go to step 3.
Page 95 5026 Step Questions / actions Remove the rear frame cover. See “Rear Replace the fuser DC Go to step 7 frame cover removal” on page 4-33. cable. See “Fuser DC cable removal” on Check the fuser DC cable in the connector page 4-92.
Page 96 5026 Step Questions / actions 1. Replace the fuser. See “Fuser removal” Problem resolved Replace the system board. on page 4-90. “System board removal” on page 4-139. 2. Bring the printer up in Diagnostics Menu (turn off the printer, press and hold .
Page 97: Paper Jam Error Service Check
5026 203.09—Paper Jam error service check Step Questions / actions Open the front access door. Turn the Go to step 2. Replace the transport belt. transport belt gear clockwise. “Transfer module removal” on page 4-154. Did the transport belt move? Turn the printer off, and then remove the Replace the fuser.
Page 98 5026 Step Questions / actions Remove the rear frame cover. See “Rear Replace the fuser DC Go to step 6. frame cover removal” on page 4-33. cable. See “Fuser DC cable removal” on Check the fuser DC cable in the connector page 4-92.
Page 99 5026 Step Questions / actions 1. Replace the fuser. See “Fuser removal” Problem resolved. Replace the system board. on page 4-90. “Fuser removal” on page 4-90. 2. Bring the printer up in Diagnostics Menu (turn off the printer, press and hold .
Page 100: 230.05-Paper Jam Error Service Check
5026 230.03, 230.05—Paper Jam error service check Step Questions / actions Is the paper fan-folded? Replace the front door Go to step 2. assembly. See “Front door assembly removal” on page 4-79. 1. Turn the printer off Replace the fuser DC Go to step 3.
Page 101 5026 Step Questions / actions Check the MPF/duplex gear assembly for Replace the MPF/duplex Go to step 6. damage. gear assembly. See “Multipurpose feeder (MPF)/duplex gear and housing removal” on page 4-102. Are the gears damaged? Replace the MPF/duplex motor assembly. Problem resolved.
Page 102: Paper Jam Service Check
5026 242.02—Paper Jam service check Step Questions / actions Has paper been fed from an input option Go to step 4. Go to step 2. before? 1. Turn the printer off. Replace the option cable. Go to step 3. “Option cable 2.
Page 103: 242.11-Paper Jam Service Check
5026 242.03, 242.11—Paper Jam service check Step Questions / actions 1. Bring the printer up in Diagnostics Menu Problem resolved. Go to step 2. (turn off the printer, press and hold . and turn on the printer). 2. Select PRINT TESTS, and press Select ( 3.
Page 104: Paper Jam Service Check
5026 242.05—Paper Jam service check Step Questions / actions Has the paper been fed from an input option Go to step 5. Go to step 2. before? 1. Bring the printer up in Diagnostics Menu Problem resolved. Go to step 3. (turn off the printer, press and hold .
Page 105: Paper Jam Service Check
5026 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 4-111. Check the option connector for damage. Is the connector damaged? Is tray 2 a high-capacity input tray (2,000- Go to step 7.
Page 106: Paper Jam Service Check
5026 242.17—Paper Jam service check Step Questions / actions Has paper been fed from an input option Go to step 4. Go to step 2. before? 1. Turn the printer off Replace the option cable. Go to step 3. “Option cable 2.
Page 107: Paper Jam Service Check
5026 242.26—Paper Jam service check Step Questions / actions Determine the input tray. Problem resolved. Go to step 2. 1. Bring the printer up in Diagnostics Menu ((turn off the printer, press and hold . and turn on the printer). 2.
Page 108: Paper Jam Service Check
5026 242.29—Paper Jam service check Step Questions / actions 1. Bring the printer up in Diagnostics Menu Problem resolved. Go to step 2. (turn off the printer, press and hold . and turn on the printer). 2. Select PRINT TESTS, and press Select ( 3.
Page 109: 243.11-Paper Jam Service Check
5026 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 4-111. Check the option connector for damage. Is the connector damaged? Replace the complete tray 3 option.
Page 110: Paper Jam Service Check
5026 243.05—Paper Jam service check Step Questions / actions Has paper been fed from an input option Go to step 5. Go to step 2. before? 1. Bring the printer up in Diagnostics Menu Problem resolved. Go to step 3. (turn off the printer, press and hold .
Page 111: Paper Jam Service Check
5026 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 4-111. Check the option connector for damage. Is the connector damaged? Is tray 3 a high-capacity input option (2,000- Go to step 7.
Page 112: Paper Jam Service Check
5026 243.17—Paper Jam service check Step Questions / actions Has paper been fed from an input option Go to step 4. Go to step 2. before? 1. Turn the printer off. Replace the option cable. Go to step 3. “Option cable 2.
Page 113: Paper Jam Service Check
5026 Step Questions / actions Is tray 3 an high-capacity input tray (HCIT)? Replace the HCIT top Replace the complete plate. See “Top plate tray 3 option. assembly removal” on page 4-177. 243.26—Paper Jam service check Step Questions / actions 1.
Page 114: Paper Jam Service Check
5026 244.02—Paper Jam service check Step Questions / actions Has paper been fed from an input option Go to step 4. Go to step 2. before? 1. Turn the printer off. Replace the option cable. Go to step 3. “Option cable 2.
Page 115: 244.11-Paper Jam Service Check
5026 Step Questions / actions Replace the complete tray 4 option. Problem resolved. Replace the system board. “System board Does the error clear? removal” on page 4-139. 244.03, 244.11—Paper Jam service check Step Questions / actions 1. Bring the printer up in Diagnostics Menu Problem resolved.
Page 116: Paper Jam Service Check
5026 244.05—Paper Jam service check Step Questions / actions Has paper been fed from an input option Go to step 5. Go to step 2. before? 1. Bring the printer up in Diagnostics Menu Problem resolved. Go to step 3. (turn off the printer, press and hold .
Page 117: Paper Jam Service Check
5026 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 4-111. Check the option connector for damage. Is the connector damaged? Is tray 4 a high-capacity input option (2,000- Go to step 7.
Page 118: Paper Jam Service Check
5026 244.17—Paper Jam service check Step Questions / actions Has paper been fed from an input option Go to step 4. Go to step 2. before? 1. Turn the printer off. Replace the option cable. Go to step 3. “Option cable 2.
Page 119: Paper Jam Service Check
5026 244.26—Paper Jam service check Step Questions / actions 1. Determine the input tray. Problem resolved Go to step 2. 2. Bring the printer up in Diagnostics Menu (turn off the printer, press and hold . and turn on the printer). 3.
Page 120: Paper Jam Service Check
5026 245.02—Paper Jam service check Step Questions / actions Has paper been fed from an input option Go to step 4. Go to step 2. before? 1. Turn the printer off. Replace the option cable. Go to step 3. “Option cable 2.
Page 121: 245.11-Paper Jam Service Check
5026 245.03, 245.11—Paper Jam service check Step Questions / actions 1. ring the printer up in Diagnostics Menu Problem resolved. Go to step 2. (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
5026 245.05—Paper Jam service check Step Questions / actions Has paper been fed from an input option Go to step 5. Go to step 2. before? 1. Bring the printer up in Diagnostics Menu Replace the option cable. Go to step 3. (turn off the printer, press and hold “Option cable .
Page 123: Paper Jam Service Check
5026 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 4-111. Check the option connector for damage. Is the connector damaged? Is tray 4 a high-capacity input option (2,000- Go to step 7.
Page 124: Paper Jam Service Check
5026 245.17—Paper Jam service check Step Questions / actions Has paper been fed from an input option Go to step 4. Go to step 2. before? 1. Turn the printer off. Replace the option cable. Go to step 3. “Option cable 2.
Page 125: Paper Jam Service Check
5026 245.29—Paper Jam service check Step Questions / actions 1. Bring the printer up in Diagnostic menu Problem resolved. Go to step 2. (turn off the printer, press and hold . and turn on the printer). 2. Select PRINT TESTS. 3.
Page 126: Engine Software Error, Nvram Mgr Problem Service Check
5026 902.59—Engine software error, NVRAM MGR problem service check Step Questions / actions Has the system board been recently Replace with a new system Go to step 2. replaced? board that has never been used before. See “System board removal” on page 4-139 Has the transfer module been recently Replace with a new...
Page 127 5026 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 4-33. Reseat the transport cable in connector JTPS1 (A). JBIN1 JFUSER1 JHVPS1 JBLW1 JSB1...
Page 128: Post (Power-On Self Test) Error Service Check
5026 920.04—POST (power-on self test) error service check Step Questions / actions Turn the printer off, and then remove the rear Problem resolved. Go to step 2. frame cover. See “Rear frame cover removal” on page 4-33. Reseat the cables in connectors JCARTP1 (A) and JCARTS1 (B).
Page 129: Post (Power-On Self Test) Printhead Motor Not Connected Error Service Check
5026 920.05—POST (power-on self test) printhead motor not connected error service check Step Questions / actions 1. Turn the printer off. Problem resolved. Go to step 2. 2. Remove the rear frame cover. See “Rear frame cover removal” on page 4-33.
Page 130: Post (Power-On Self Test) Error Service Check
5026 920.07—POST (power-on self test) error service check Step Questions / actions Turn the printer off, and then remove the rear Problem resolved. Go to step 2. frame cover. See “Rear frame cover removal” on page 4-33. Reseat the cable in connector JTRAY1. JBIN1 JFUSER1 JHVPS1...
Page 131 5026 Step Questions / actions 1. Disconnect the cable in JTRAY1. Remove the paper pick Replace the system board. mechanism. See “Paper “System board 2. Connect the cable from the new paper pick mechanism removal” on page 4-139. pick mechanism. assembly removal”...
Page 132: Check
5026 920.09—POST (power-on self test)—Four toner sensors not connected error service check Step Questions / actions Turn the printer off, and then remove the rear Problem resolved. Go to step 2. frame cover. See “Rear frame cover removal” on page 4-33.
Page 133: Check
5026 920.10—POST (power-on self test)—Three toner sensors not connected error service check Step Questions / actions Remove the left cover. See “Left cover If only one or two of the Go to step 2. removal” on page 4-21. Check all the toner toner level sensor are level sensor cables connected to the rear of damaged:...
Page 134: Check
5026 920.11—POST (power-on self test)—Two toner sensors not connected error service check Step Questions / actions Remove the left cover. See “Left cover If only one of the toner level Go to step 2. removal” on page 4-21. Check all the toner sensor is damaged: level sensor cables connected to the rear of •...
Page 135: Post (Power-On Self Test)-One Sensor Not Connected Error Service Check
5026 920.12—POST (power-on self test)—One sensor not connected error service check Step Questions / actions Remove the left cover. See “Left cover Replace the damaged Go to step 2. removal” on page 4-21. Check all the toner sensor. See “Toner level level sensor cables connected to the rear of sensor removal”...
Page 136: Post (Power-On Self Test) Cartridge Motor 1 Not Connected Error Service Check
5026 920.13—POST (power-on self test) cartridge motor 1 not connected error service check Step Questions / actions Turn the printer off, and then remove the rear Problem resolved. Go to step 2. frame cover. See “Rear frame cover removal” on page 4-33.
Page 137: Check
5026 920.14—POST (power-on self test)—Cartridge motor 2 not connected error service check Step Questions / actions 1. Turn the printer off. Problem resolved. Go to step 2. 2. Remove the rear frame cover. See “Rear frame cover removal” on page 4-33.
Page 138: 920.20-Post (Power-On Self Test)-Bad Transfer Module Nvram Data Error Service Check
5026 Step Questions / actions Measure the resistance across the fuse F7 Replace system board. Replace the EP drive (A) on the system board. “System board assembly. See removal” on page 4-139. “Electrophotographic (EP) drive assembly removal” on page 4-69. JBIN1 JFUSER1 JHVPS1...
Page 139: Post (Power-On Self Test)-Bad Printhead Nvram Data Error Service Check
5026 Step Questions / actions Lower the front access cover. Check the Replace the transport Go to step 4. transport cable for pinch points and any other cable. See “Transport cable damage. cable removal” on page 4-156. Is the cable damaged? Replace the transfer module.
Page 140: Post (Power-On Self Test)-Output Bin Cable Not Connected Error Service Check
5026 920.17—POST (power-on self test)—Output bin cable not connected error service check Step Questions / actions Turn the printer off, and then remove the rear Problem resolved. Go to step 2. frame cover. See “Rear frame cover removal” on page 4-33.
Page 141: Post (Power-On Self Test)-Cartridge Motor 3 Not Connected Error Service Check
5026 920.18—POST (power-on self test)—Cartridge motor 3 not connected error service check 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 page 4-33. Reseat the cables in connectors JCARTP2 (A) and JCARTS2 (B).
Page 142: Check
5026 920.19—POST (power-on self test)—Transfer module stepper motor not connected error service check Step Questions / actions Turn the printer off, and then remove the rear Problem resolved. Go to step 2. frame cover. See “Rear frame cover removal” on page 4-33.
Page 143: Post (Power-On Self Test)-24 V Power Supply Failure Error Service Check
5026 Step Questions / actions Check the transport motor cable for pinch Replace the transport Go to step 5. points and any other damage to the cable or motor cable. See connector. “Transport cable removal” on page 4-156. Is the cable damaged? Visually inspect the motor driver card.
Page 144 5026 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 4-33. Reseat the cable in connector JLVPS2 (A). JBIN1 JFUSER1 JHVPS1 JBLW1 JSB1 JFAN1...
Page 145: Post (Power-On Self Test)-Duplex Motor Not Connected Error Service Check
5026 920.23—POST (power-on self test)—Duplex motor not connected error service check Step Questions / actions Turn the printer off, and then remove the rear Problem resolved. Go to step 2. frame cover. See “Rear frame cover removal” on page 4-33. Reseat the cable in connector JDX1 (A).
Page 146: 920.28, 920.29-Post (Power On Self Test) Service Check
5026 920.27, 920.28, 920.29—POST (power on self test) service check Step Questions / actions Is the specified option the 550-sheet tray? Replace the 550-sheet tray Go to step 2. with a new 550-sheet tray option. Is the specified option the special media tray? Replace the special media Go to step 3.
Page 147: 925.04, 925.06-Cartridge Cooling Fan Error Service Check
5026 925.02, 925.04, 925.06—Cartridge cooling fan error service check 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 removal” on page 4-33.
Page 148: Xx, 947.Xx-Transfer Roll Error Service Check
5026 945.xx, 947.xx—Transfer roll error service check Step Questions / actions Replace the transfer module. POR the printer. Problem resolved. Replace the original transfer module. Go to step Did the error clear? Turn the printer off, and then remove the rear Replace the HVPS cable.
Page 149 5026 Step Questions / actions Remove the HVPS. See “High-voltage Go to step 4. Replace the transfer power supply (HVPS) removal” on contact assembly. page 4-94. Check for continuity between the contacts (yellow1 and yellow2, cyan1 and cyan2, magenta1 and magenta2, or black1 and black2) on the transfer contact assembly.
Page 150: 950.29-Eprom Mismatch Failure
5026 950.00–950.29—EPROM mismatch failure Warning: When replacing any one of the following components: • System board • Operator assembly card or top access cover assembly Replace only one component at a tie or the printer will be rendered inoperable. Replace the required component, bring the printer up in Diagnostic menu (see “Diagnostics menu”...
Page 151: Xx-System Board Failure Service Check
5026 956.xx—System board failure service check 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 removal” on page 4-33. removal” on page 4-139.
Page 152: Interlock Switch Service Check
5026 5 V interlock switch service check Step Questions / actions Is the +5 V interlock switch damaged? Replace the 5 V interlock Go to step 2. switch. See “5 V interlock switch cable removal” on page 4-45. Turn the printer off, and remove the rear Replace the 5 V interlock Go to step 3.
Page 153: V Interlock Switch Service Check
5026 24 V interlock switch service check Step Questions / actions Is the 24 V interlock switch damaged? Replace the 24 V interlock Go to step 2. switch. See “24 V interlock switch removal” on page 4-47. Turn the printer off, and remove the rear Replace the 24 V interlock Go to step 3.
Page 154: Bubble Sensor Service Check
5026 Bubble sensor service check Step Questions / actions Is the bubble sensor flag damaged? Replace the fuser. See Go to step 2. “Fuser removal” on page 4-90. Remove the rear frame cover. See “Rear Replace the fuser DC Go to step 3. frame cover removal”...
Page 155 5026 Step Questions / actions Place a voltmeter between FUSER1 pin 3 and Go to step 6. Go to step 5. ground (pin 6). JFUSER1 JHVPS1 JBIN1 JSB1 JFAN1 JBOR1 JCVR1 JLVPS2 Pin 6 Pin 8 (ground) Does the meter read +5 V dc? 1.
Page 156: Dead Printer Service Check
5026 Dead printer service check 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. If the base printer operates correctly, replace the 550-sheet option assembly.
Page 157: Exit Sensor Service Check
5026 Exit sensor service check Step Questions / actions Verify the paper is loaded properly in the Go to step 2. Load paper correctly. paper tray or manual feed slot. Is the paper properly loaded? Turn the printer off, and remove the fuser. Problem resolved.
Page 158 5026 Step Questions / actions 1. Replace the fuser. Problem resolved. Replace the system board. “System board 2. Bring the printer up in Diagnostics Menu removal” on page 4-139. (turn off the printer, press and hold . and turn on the printer). 3.
Page 159: Input Sensor Service Check
5026 Input sensor service check Step Questions / actions Is the input sensor flag damaged? Replace the paper pick Go to step 2. mechanism. See “Paper pick mechanism assembly removal” on page 4-113. 1. Turn the printer off. Replace the paper pick Go to step 3.
Page 160: Networking Service Check
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. Step...
Page 161 5026 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 network drop for activity. “System board administrator.
Page 162: Operator Panel Service Check
5026 Operator panel service check One or more operator panel buttons fail Step Questions / actions Run the Button Test. See“Button Test” on Replace the operator panel Go to step 2. page 3-12 in Diagnostics mode. assembly. See “Operator panel assembly removal” Did any of the buttons fail the test? on page 4-24.
Page 163: Print Quality Service Check
5026 Operator panel display all diamonds, no beeps Step Questions / actions Check the operator panel assembly cable. Replace the top access Go to step 2. cover assembly. See “Top Is the cable damaged? access cover assembly removal” on page 4-40.
Page 164 5026 Print quality—background 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 a large amount of graphics in a humid environment.
Page 165 5026 Step Questions / actions Clean the printhead. Problem solved. Replace the printhead. See “Printhead removal, Does this fix the problem? installation, and adjustment” on page 4-121. Print quality—blank page Step Questions / actions Is all the packing material for the Go to step 2.
Page 166 5026 Step Questions / actions Turn off the printer and check the continuity of Go to step 7. Replace the cable the HVPS cable. assembly. Pin 23 Pin 1 Pin 24 Pin 23 Pin 2 Pin 24 Pin 2 Pin 1 Is there continuity? Replace the HVPS.
Page 167 5026 Print quality—horizontal line The photoconductor unit is defective. Replace the photoconductor unit. Print quality—insufficient fusing Step Questions / actions Is the fuser properly installed? Go to step 2. Install the fuser properly. Replace the fuser. See “Fuser removal” on Problem solved.
Page 168 5026 Print quality—residual image 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. Step Questions / actions Is there any toner contamination on the fuser Replace the fuser.
Page 169: Tray Linking Service Check
5026 Step Questions / actions Turn the printer off, and then check the Go to step 4. Replace the cable continuity of the HVPS cable. assembly. Pin 23 Pin 1 Pin 24 Pin 23 Pin 2 Pin 24 Pin 2 Pin 1 Is there continuity? Replace the HVPS.
Page 170 5026 2-136 Service Manual...
Page 171: Diagnostic Aids
5026 3. Diagnostic aids This chapter explains the tests and procedures to identify printer failures and verify repairs have corrected the problem. There are different test menus that can be accessed during POR to identify problems with the printer. Diagnostics menu 1.
Page 172: Diagnostics Menu
5026 Diagnostics menu Note: Tray 2 refers to the 550-sheet tray located in the 550-sheet option assembly. Diagnostics menu structure When the Diagnostics mode is entered, each Diagnostics main menu item displays on the operator panel. When a diagnostic test is selected from the main menu, a sub menu displays and each individual test displays in the order shown.
Page 173 5026 PRINT TESTS Tray 1 “Input source tests” on page 3-10. Tray 2 (if installed) Tray 3 (if installed) Tray 4 (if installed) Tray 5 (if installed) Multi-Purpose Feeder Prt Quality Pgs “Print quality test pages (Prt Quality Pgs)” on page 3-11.
Page 174 5026 DEVICE TESTS (if hard disk or flash is installed) Quick Disk Test “Quick Disk Test” on page 3-18. Disk Test/Clean “Disk Test/Clean” on page 3-19. Flash Test “Flash Test” on page 3-19. PRINTER SETUP Defaults “Defaults” on page 3-20. PAGE COUNTS “Page Counts”...
Page 175: Registration
5026 Registration Note: If you need to perform alignment or registration, see “Printhead alignment” on page 4-8. The following information is meant to explain the uses for the menu items. 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 176 5026 Print registration To set print registration: Select REGISTRATION from the DIAGNOSTICS menu. Select Quick Test, and press Select ( 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. to select the margin setting you need to change, and press Select ( to decrease or to increase the offset values, and press Select (...
Page 177: Quick Test
5026 Quick Test The Quick Test contains the following information: • Print registration settings • Alignment diamonds at the left, right, top and bottom • Horizontal lines to check for skew • General printer information, including current page count, installed memory, serial number, and code level. To print the Quick Test page: Note: Print the Quick Test Page on letter or A4 paper.
Page 178: Alignment
5026 Alignment Note: If you need to perform alignment or registration, see “Printhead alignment” on page 4-8. The following information is meant to explain the uses for the menu items. Alignment is part of the process of adjusting the printhead and the color planes to the black plane and to each other.
Page 179: Motor Tests
5026 Motor tests The motor tests are run primarily to locate noises in the printer. General motor tests procedures In some instances, when you enter a particular test, you will be given the choice to run the motor in forward or reverse.
Page 180: Print Tests
5026 Setup requirements Values in Motor test Notes Top cover Lower door menu position position Closed Forward, If the cam or COD are at the farthest Reverse extent forward or backward, selecting this value does not show a result. If this Closed Forward, happens, select the other value.
Page 181 5026 Tray 4 (if installed) Tray 5 (if installed) Multi-Purpose Feeder (if installed) Select Single or Continuous, and press Select ( • If Single is selected, a single page is printed. • If Continuous is selected, printing continues until Stop ( ) is pressed to cancel the test.
Page 182: Hardware Tests
5026 Hardware Tests Panel Test This test verifies the operator panel LCD function. To run the Panel Test: Select HARDWARE TESTS from DIAGNOSTICS, and press Select ( Select Panel Test, and press Select ( The Panel Test continually executes. Each pixel is activated at the darkest level to the lightest level, and then the backlight illuminates and turns off.
Page 183: Serial 1 Wrap
5026 Serial 1 Wrap The Serial 1 Wrap Test is used to check the operation of the serial port hardware using a wrap plug. Each serial signal is tested. To perform the Serial 1 Wrap Test: Disconnect the serial interface cable, and install the serial wrap plug. Select HARDWARE TESTS from the Diagnostics Menu, and press Select ( Select Serial 1 Wrap, and press Select ( The power indicator blinks indicating the test is in progress.
Page 184: Duplex Tests
5026 USB HS Test Mode Select HARDWARE TESTS from DIAGNOSTICS, and press Select ( Select USB HS Test Mode, and press Select ( Select the port (Port 0, Port 1, Port 2, or Port 3), and press Select ( Select the test for that port from the following list: Test J Test K Test SE0 NAK...
Page 185: Print Test (Duplex)
5026 To run the Quick Test (duplex): Select Quick Test from DUPLEX TESTS, and press Select ( Select Single or Continuous, and press Select ( • The single Duplex Quick test cannot be canceled. • The printer attempts to print the Quick Test Page from the default paper source. •...
Page 186: Skew (Duplex)
5026 Skew (duplex) This setting adjusts the duplex motor speed when it feeds through the aligning roll. It controls the skew between the first scan line and the top of the page. Adjustments are made to the image that is facedown in the output tray.
Page 187: Sensor Test
5026 to select the margin setting you need to change. • Each increment shifts the duplex left margin by 4 pixels at 600 dpi (0.00666 inches or 0.1693 mm). • The Left Margin range is -50 to +50, and the default value is 0. •...
Page 188: Printhead Tests
5026 Printhead Tests Mirror Motor Test Select PRINTHEAD TESTS in DIAGNOSTICS, and press Select ( Select Mirror Motor Test, and press Select ( The panel displays Mirror Motor Test—Motor Running…. After the test completes, the panel displays either Pass or Fail. To stop the test, press Back ( ) or Stop ( Servo Laser Test...
Page 189: Disk Test/Clean
5026 Disk Test/Clean 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: Select DEVICE TESTS in the Diagnostics Menu, and press Select ( Select Disk Test/Clean, and press Select ( Files will be lost/Go or Stop? is displayed to warn the user.
Page 190: Printer Setup
5026 Printer Setup Defaults U.S./Non-U.S. defaults changes whether the printer uses the U.S. factory defaults or the non-U.S. factory defaults. The settings affected include paper size, envelope size, PCL symbol set, code pages, and units of measure. Warning: Changing this setting resets the printer to factory defaults, and data may be lost. It cannot be undone. Page Counts You can view, but not change any of the three counts displayed under PAGE COUNTS.
Page 191 5026 To set the configuration ID: Select Printer Setup from the Diagnostic mode. Select Configuration ID from the Printer Setup menu. Submitting Selection displays, followed by the value for Configuration ID 1. Enter the Configuration ID 1. • To select a digit or character to change, press until the digit or character is underlined.
Page 192: Ep Setup
5026 EP Setup EP Defaults This setting is used to restore each printer setting listed in EP SETUP to its factory default value. Sometimes this is used to help correct print quality problems. To restore EP Defaults: Select EP SETUP from DIAGNOSTICS, and press Select ( Select EP Defaults, and press Select ( Select Restore to reset the values to the factory settings, and select Do Not Restore to exit without changing the settings.
Page 193: Exit Diagnostics
• 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: Select EVENT LOG from DIAGNOSTICS, and press Select (...
Page 194: Configuration Menu (Config Menu)
5026 Configuration menu (CONFIG MENU) Available tests The tests display on the operator panel in the order shown. Reset Fuser Cnt “Reset Fuser Cnt” on page 3-25. Color Lock Out “Color Lock Out” on page 3-25. Prt Quality Pgs “Prt Quality Pgs” on page 3-25.
Page 195: Reset Fuser Cnt
5026 Reset Fuser Cnt Resets the fuser count value to zero. The Event Log records each time that a user executes the Reset Fuser Count operation. See “Event Log” on page 3-26 for more information. This setting only appears if the Maintenance Warning and Intervention function is enabled in the printer Configuration ID.
Page 196: Reports
5026 Reports Menu Settings Page The Menu Settings Page generates a list of Configuration Menu settings and the current values. Event Log 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.
Page 197: Ppds Emulation
5026 PPDS Emulation Activates or deactivates (default) the Personal Printer Data Stream (PPDS) emulation language. This menu item only appears if the PPDS interpreter is available. Download Emuls This menu item allows the system support person turn the download emulator off temporarily. This menu item only appears if at least one download emulator is installed.
Page 198: Auto Align Adj
5026 Auto Align Adj Controls whether the printer executes the automatic alignment calibration after an initiating event occurs. When an event initiates a TPS operation, the printer performs a toner density calibration, (TPS) an alignment calibration, or both of the calibrations. Toner Patch Sensing (TPS) is a diagnostic mechanism that automatically adjusts the printer toner density and alignment settings.
Page 199: Motor Calibration
5026 Motor Calibration This test is run to calibrate the leading edge of the paper to each transfer station. to select Motor Calibration from the Config Menu. Calibrating displays, and the printer prints Press Select eight blank pages and then returns to the Config Menu. Note: This test should be run at 600 dpi resolution and with duplex disabled.
Page 200: Disk Encryption
5026 Disk Encryption 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. Note: If an encrypted disk is removed from the printer and another disk is installed, the Disk Corrupted.
Page 201: Clear Custom Status
5026 Clear Custom Status This operation erases any strings that have been defined by the user for the Default or Alternate custom messages. USB Speed Full or Auto (default) Exit Config Menu Press Select to exit the Config Menu. The printer performs a power-on reset and returns to normal mode. 3-31 Diagnostic aids...
Page 202: Front Cover Locked In Place
5026 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 may not unlock.
Page 203 5026 Press the waste toner release latch (C), swing the front of the waste toner assembly away from the printer, and remove. Remove the two screws (D) on the bottom and one screw higher up (E). Press the locking tab (F). 3-33 Diagnostic aids...
Page 204 5026 Lift the rear of the left cover out, and rotate it out of position. Note: It will not come completely off with the front cover locked. With a flatblade screwdriver, turn the camshaft counterclockwise until the door unlocks. Open the front cover. 3-34 Service Manual...
Page 205: Printhead Verification
5026 Printhead verification You can verify that the printhead is the failing FRU by following this procedure: Turn the printer off, and remove the power cord from the outlet. Remove all cords and cables from the printer before beginning. Locate the printer on a corner of a work area so the front and back can be accessed. 3-35 Diagnostic aids...
Page 206 5026 Remove the rear frame cover. Loosen the eight screws on the rear frame cover (A). Note: Do not remove the screws. Lift up on the rear frame cover to remove it from the back of the printer. 3-36 Service Manual...
Page 207 5026 Carefully unplug the printhead ribbon (B) and the mirror motor cables (C) from the system board, and carefully connect the printhead ribbon and mirror motor cables from the new printhead into the system board. It is important to position the laser in the printhead down into the packaging as shown. Note: Use the packaging that came with the printhead FRU to prop the printhead up.
Page 208: Paper Jams
5026 Paper Jams Error jam locations The following illustration shows the location and error codes generated for specific paper jams and the corresponding locations of these jams. 3-38 Service Manual...
Page 209: Clearing Jams
The following hints can help you avoid jams: • Use only recommended paper or specialty media. For more information, refer to the Card Stock & Label Guide available on the Lexmark Web site at www.lexmark.com/publications. • Do not load too much paper. Make sure the stack height does not exceed the indicated maximum height.
Page 210 5026 200 paper jams If paper jams behind the inner door, but not under the photoconductor units, 200.xx Paper jam appears. Note: To avoid overexposing the photoconductor units, do not leave the front door open longer than 10 minutes. Open the front door. Pull the jammed paper up and out to remove it from behind the toner cartridge area.
Page 211 5026 Remove each photoconductor unit, and place it on a flat surface. Remove the jammed paper, and then replace each photoconductor unit. Close the front door. Press Select ( 201 paper jam If paper is jammed under the fuser or the top cover, 201.xx Paper jam appears. Open the front door, and then open the top cover.
Page 212: Paper Jam
5026 Lift the unit and pull forward to remove it. Remove the jammed paper. Replace the fuser unit, and then turn the screws to the right to fasten it securely. Close the top cover, and then close the front door. Press Select ( 202 paper jam If paper is jammed both under the fuser unit and in the slot behind the fuser unit, 202.xx Paper jam appears.
Page 213 5026 If the paper is jammed behind the fuser, you will need to remove the fuser unit. Turn the screws on the fuser unit to the left. Lift the unit and pull forward to remove it. Pull the paper gently out of the printer or up toward the standard exit bin to remove it. Place the fuser unit back into the printer, and turn the screws to the right to fasten the fuser unit securely.
Page 214 5026 203 paper jam If paper is jammed under the rollers near the fuser, or in the standard exit bin 203.xx Paper jam appears. Grasp the paper that is visible in the standard exit bin, and pull it away from the bin. Open the front door, and then open the top cover.
Page 215 5026 Reinsert tray 1. Press Select ( 240 paper jam If paper is jammed in Tray 1, 241.xx Paper jam appears. If paper is jammed in any of the optional trays, 24x.xx Paper jam appears. • If the jammed paper is located in tray 1, follow these steps to remove the paper from tray 1. Open tray 1, and pull the jammed pages straight up and out.
Page 216 5026 250 paper jam If paper is jammed in the multipurpose tray, 250.xx Paper jam appears. Press the paper release lever, and then remove the jammed pages from the multipurpose tray. Load new paper into the multipurpose tray. Press Select ( 3-46 Service Manual...
Page 217: Repair Information
5026 4. Repair information CAUTION—POTENTIAL INJURY: The printer weight is greater than 54 lbs (24.5kg), and requires two or more trained personnel to lift safety. CAUTION—POTENTIAL INJURY When you see this symbol, there is a danger from hazardous voltage in the area of the product where you are working.
Page 218: Handling Esd-Sensitive Parts
5026 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: •...
Page 219: Screw And Retainer Identification Table
5026 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. Sizes are as close to actual as possible, as long as the printout is not scaled or resized.
Page 220 5026 Screw identification table (continued) Screw type Location 18B0832 Taptite M3 L6 Laser support plate to lower plate panhead Left camshaft lock assembly to printer frame Left frame assembly to laser support plate Left frame assembly to lower plate Lower plate to left frame assembly (Cont.) LVPS support plate to right plate LVPS to right frame plate and support bracket...
Page 221 5026 Screw identification table (continued) Screw type Location 27S2837 M3.5X1.34 panhead Left cover to lower frame 8L, black Rear left cover through lower swingout frame into left cover Rear right cover to rear upper cover Rear upper cover to top cover Top cover to right cover 27S2838 Machine M3X0.5–...
Page 222 5026 Screw identification table (continued) Screw type Location 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) Cover mount to rightside plate Display detent spring to display back bezel...
Page 223 5026 Screw identification table (continued) Screw type Location 88A0412 M2.9x5.2 Plastite GS COD bellcranks to guide NGS COD bellcranks to guide Top access door assembly to fuser retract link Top cover left link to cover Repair information...
Page 224: Adjustments
5026 Adjustments Printhead alignment 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 align the black plane to the printer frame and also allows skew adjustment with the printhead alignment screw.
Page 225 5026 Loosen the printhead mounting screws in the following order: D1, D2, and D3. Remove the printhead alignment screw cover (E). Reinstall the transfer module with the photoconductor units still attached. Reconnect the transfer module cable. Replace the toner cartridges. Close the top access door.
Page 226 5026 Align the printhead skew for black. Enter the Diagnostic menu (turn off the printer, press and hold , turn on the printer, and release the buttons when the clock graphic displays). Select REGISTRATION from the DIAGNOSTICS menu, and press Select ( Select Skew, and press Select ( to set the Skew to zero, and press Select ( Press Back (...
Page 227 5026 Adjust the printhead alignment screw (G) to change the skew and straighten the image on the printout. 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 until the top alignment marks are the same distance from the top of the media.
Page 228 5026 Tighten the printhead mounting screws. 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 229 5026 Registration (black) Top Margin Reconnect the power cord to the electrical outlet, but do not turn on the printer yet. Enter Diagnostic mode (press and hold , turn on the printer, and release the buttons when the clock graphic displays). Select REGISTRATION, and press Select Select Quick Test, and press Select or use the last Quick Test you used to adjust skew.
Page 230 5026 Left Margin Adjust the left margin until the points of the left alignment marks touch the edge of the page. • Increasing the value ( ) moves the left alignment marks away from the edge of the page. • Decreasing the value ( ) moves the left alignment marks toward on the edge of the page.
Page 231 5026 Select Quick Test in the Cyan menu, and press Select ( Two pages print. You may have to print these pages several times until you get T (Top Margin) and Z (Skew) aligned. Do not go to step 2 until T and Z are aligned. The first page is similar to the following: 4-15 Repair information...
Page 232 5026 Determine the line under Fine Adjustment that is closest. If the value is beyond the Fine Adjustment scale, use either of the Coarse Adjustment scales. Enter the number determined from the Fine Adjustment scale or the Coarse Adjustment scales on the part of the page for the “T”...
Page 233 5026 Repeat this process for skew (Z). Don't forget to subtract the T value and add the current cyan Z value to obtain the new skew (Z) value. An example is shown below: 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 234: Printer Removal Procedures
5026 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. Turn the printer power off and unplug the power cable from the outlet prior to starting removals or checks.
Page 235: Cover Removals
5026 Cover removals Front access cover assembly removal See Front access door cover assembly for the part number for the models you need on page 7-3. 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.
Page 236 5026 Looking down at the keyed end of the restraint (D), twist the end clockwise, slide the restraint upward through the slit (E), and slip the end of the restraint through the keyed hole (F). Repeat for the other side. 4-20 Service Manual...
Page 237: Left Cover Removal
5026 Close the front access door assembly. Remove the two screws (G) that attach the pivot pin to the front access door cover assembly. Remove the bracket (H). Remove the front access cover assembly. Left cover removal “Left cover” on page 7-3 for the part number.
Page 238 5026 Remove the screws (D) from the rear left cover. Lift, and remove the left cover and rear left cover together. Note: Because the paper tray dust cover is loose at this point, set it aside. Note: If you are removing the left cover to access another part, leave the left cover and the rear left cover attached, and you are done.
Page 239 5026 Separate the left cover and rear left cover by sliding the left rear cover as shown to disengage the latch (E). 4-23 Repair information...
Page 240: Operator Panel Assembly Removal
5026 Operator panel assembly removal “Operator panel assembly, with card” on page 7-3 for the part number. Warning: When replacing any one of the following components: • Operator panel assembly • System board • Top access cover assembly Only replace one component at a time. Replace the required component, and perform a POR before replacing a second component listed above.
Page 241 5026 Remove the four screws (B) from the operator panel card. Note: Observe the position of the ground cable (C). Disconnect the operator panel cable (D). 4-25 Repair information...
Page 242 5026 Gently turn the operator panel card over, and disconnect both display cables (E). Note: The ribbon cable has a latch (F) that needs to be lifted to disconnect the cable. Turn the top access cover assembly over. Gently use a flathead screwdriver to pry out the lens from the bezel back cover. 4-26 Service Manual...
Page 243 5026 Remove the display from the lens. Note: The operator panel assembly consist of the display and the operator panel card. 4-27 Repair information...
Page 244: Operator Panel Bezel Removal
5026 Operator panel bezel removal See Operator panel bezel on page 7-3 for the part number. Open the front cover. 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 the bezel.
Page 245: Operator Panel Buttons Removal
5026 Operator panel buttons removal Remove the top access door cover assembly. See “Top access cover assembly removal” on page 4-40. Turn the top access cover assembly over. Remove the nine screws (A) securing the position guide. Remove the four screws (B) from the operator panel card. Note: Observe the position of the ground cable (C).
Page 246 5026 Disconnect the operator panel cable (D). Turn over the operator panel card. Note: Do not disconnect the display cables. Be sure not to put any pressure on the ribbon cable. Remove the clear shield over the number pad. Remove the buttons (E) from the top access door cover. 4-30 Service Manual...
Page 247: Output Bin Extension Cover Removal
5026 Output bin extension cover removal “Output bin extension cover” on page 7-3 for the part number. Turn the printer around, so the back is toward you. Rotate the output bin extension cover toward the front of the printer. Use a flathead screwdriver to ease the posts from the holes on one side. 4-31 Repair information...
Page 248: Paper Tray Dust Cover Removal
5026 Paper tray dust cover removal “Dust cover assembly” on page 7-3 for the part number. Remove the paper tray. Remove the left cover. See “Left cover removal” on page 4-21. Remove the paper tray dust cover assembly. Installation notes: Place the paper tray dust cover into position.
Page 249: Rear Frame Cover Removal
5026 Rear frame cover removal “Rear frame cover” on page 7-3 for the part number. Remove paper tray Loosen the eight screws (A) on the rear frame cover. Note: Do not remove the screws. Lift up on the rear frame cover to remove it from the back of the printer. 4-33 Repair information...
Page 250: Rear Left Cover Removal
5026 Rear left cover removal Remove the left cover. See “Left cover removal” on page 4-21. Separate the left cover and rear left cover by sliding the left rear cover as shown to disengage the latch (A). 4-34 Service Manual...
Page 251: Rear Right Cover Removal
5026 Rear right cover removal “Rear right cover” on page 7-3 for the part number. Remove the right cover. See “Right cover removal” on page 4-37. Press the two tabs (A) to separate the right cover from the rear right cover. 4-35 Repair information...
Page 252: Rear Upper Cover Removal
5026 Rear upper cover removal Remove the two screws (A). Slide the cover up and remove the rear upper cover. Note: If you are removing the rear upper cover to access another part, leave the cooling fan filter attached, and you are done.
Page 253: Right Cover Removal
5026 Right cover removal “Right cover” on page 7-3 for the part number. Remove the power cord from the printer. Remove the paper tray. Remove the rear upper cover. See “Rear upper cover removal” on page 4-36. Open the front cover. Open the top access cover.
Page 254 5026 Remove the three screws (C). Lift the bottom of the cover out, pull up at the points shown, and remove the cover. Note: There are posts on the top access cover and the paper tray dust cover (D). When you reinstall, be sure to verify that the top access cover opens correctly and that the paper tray dust cover swings properly.
Page 255 5026 Press the two tabs (F) to separate the right cover from the rear right cover. 4-39 Repair information...
Page 256: Top Access Cover Assembly Removal
5026 Top access cover assembly removal “Top access cover assembly” on page 7-3 for the part number. Warning: When replacing any one of the following components: • Operator panel assembly • System board • Top access cover assembly Only replace one component at a time. Replace the required component, and perform a POR before replacing a second component listed above.
Page 257 5026 Disconnect the two screws (D), one on either side of the printer, that connects the links. Extract the cables (E). 4-41 Repair information...
Page 258 5026 Slide the top access cover to the rear, and remove. Note: If you are removing the top access cover assembly to access another FRU, then leave the operator panel bezel attached, and you are done. If you are replacing the top access cover assembly FRU, then continue with the next step to disconnect the separate operator panel bezel FRU.
Page 259: Top Cover Assembly Removal
5026 Top cover assembly removal Remove the LVPS. See “Low-voltage power supply (LVPS) removal” on page 4-98. Remove the top access cover assembly. See “Top access cover assembly removal” on page 4-40. Disconnect the connectors in JBLW1 (A), JFUSER1 (B), JFAN1 (C) on the system board. Pull the cables through the openings.
Page 260 5026 Remove the fuser AC cable from the cable restraint (D). Remove the five screws (E). Lift off the top cover assembly. 4-44 Service Manual...
Page 261: Printer Removals
5026 Printer removals 5 V interlock switch cable removal “5 V interlock switch” on page 7-7 for the part number. Remove the EP drive assembly. See “Electrophotographic (EP) drive assembly removal” on page 4-69. Disconnect the connector at JINT1 (A) on the system board. 4-45 Repair information...
Page 262 5026 Open the front access door cover, and remove the screw (B). Remove the cable from the two cable retainers (C). 4-46 Service Manual...
Page 263: Interlock Switch Removal
5026 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. 24 V interlock switch removal “24 V interlock switch” on page 7-7 for the part number. Remove the LVPS.
Page 264 5026 Remove the screw (B), and the bracket separates from the 24 V interlock switch. Installation notes: Observe the routing of the 24 V interlock switch cable (C). 4-48 Service Manual...
Page 265: Bin Full Sensor Flag Removal
5026 Bin full sensor flag removal Remove the top access cover assembly. See “Top access cover assembly removal” on page 4-40. Turn the top access cover over, and use a flatblade screwdriver to carefully remove the flag (A). Bin full sensor removal “Bin full sensor with cable”...
Page 266: Cartridge Cooling Fan Removal
5026 Cartridge cooling fan removal Remove the top cover. See “Top cover assembly removal” on page 4-43. Turn the top cover over, and remove the two screws (A). Remove the cartridge cooling fan. 4-50 Service Manual...
Page 267: Cartridge Motor 1/Fuser Cable Removal
5026 Cartridge motor 1/fuser cable removal Remove the LVPS. See “Low-voltage power supply (LVPS) removal” on page 4-98. Disconnect the connectors in JCARTP1 (A) and JCARTS1 (B) on the system board. Disconnect the connectors from the cartridge motor 1 (C) and the fuser motor (D). 4-51 Repair information...
Page 268 5026 Disconnect the camshaft cable connector (E) from the motor card, and unwind the two cables. Remove the cable from the six retainers (F). 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.
Page 269: Cartridge Motor 2/3 Cable Removal
5026 Cartridge motor 2/3 cable removal Remove the LVPS. See “Low-voltage power supply (LVPS) removal” on page 4-98. Disconnect the connectors in JCARTP2 (A) and JCARTS2 (B) on the system board. Disconnect the connectors from the cartridge motor 2 (C) and cartridge motor 3 (D). 4-53 Repair information...
Page 270 5026 Remove the cable from the six retainers (E). Installation notes: Note the routing of the cables and the cable retainers. 4-54 Service Manual...
Page 271: Color On Demand Assembly Removal
5026 Color on demand assembly removal Remove the print cartridges. Remove the top cover assembly. See “Top cover assembly removal” on page 4-43. Disconnect the connector at JBOR1 (A) on the system board. Remove the five screws (B). Remove the COD assembly. 4-55 Repair information...
Page 272 5026 Installation notes: Push the actuators (A) all the way down. 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. 4-56 Service Manual...
Page 273 5026 Rotate the large COD gear until the stop (C) on the gear is against the housing. Engage the gears on the left side of the COD. 4-57 Repair information...
Page 274 5026 Engage the gears (D) on the right side of the COD. Replace the five screws (E). 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. Reconnect the cable connector to JBOR1 connector on the system board.
Page 275: Contact Springs Removal
5026 Contact springs removal “Contact springs kit, including:” on page 7-11 for the part number. Remove all the toner cartridges. Remove the screw (A) and the spring cap (B) of the appropriate contact spring. Press the lower half (C, D) of the springs, and remove the springs. 4-59 Repair information...
Page 276 5026 Installation notes: 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 277: Cooling Fan Removal
5026 Cooling fan removal Remove the rear upper cover. See “Rear upper cover removal” on page 4-36. Remove the rear frame cover. See “Rear frame cover removal” on page 4-33. Disconnect JFAN1 (A). Remove the two screws (B). Remove the cooling fan. 4-61 Repair information...
Page 278: Cooling Fan Filter Removal
5026 Cooling fan filter removal Remove the rear upper cover. See “Rear upper cover removal” on page 4-36. Turn the cover over. Squeeze the right side of the filter, and remove it from the tabs (A). 4-62 Service Manual...
Page 279: Display Detent Spring
5026 Display detent spring Remove the top access cover assembly. See “Top access cover assembly removal” on page 4-40. Turn the top access cover assembly over. Remove the nine screws (A) securing the position guide. Remove the four screws (B) from the operator panel card. Note the position of the ground cable (C).
Page 280 5026 Disconnect the operator panel cable (D). Gently turn the operator panel card over, and disconnect both display cables (E). Note: The ribbon cable has a latch (F) that needs to be lifted to disconnect the cable. Turn the top access cover assembly over. Remove the operator panel bezel.
Page 281 5026 Remove the screw (G) securing the display detent spring. Rotate the display detent spring (H), and push down to remove the spring. 4-65 Repair information...
Page 282: Duplex Reference Edge Guide Assembly Removal
5026 Duplex reference edge guide assembly removal 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. Note: Leave the photoconductor units on the transport belt when removing.
Page 283 5026 Looking down at the keyed end of the restraint (D), twist the end clockwise, slide the restraint upward through the slit (E), and slip the end of the restraint through the keyed hole (F). Repeat for the other side. Close the front access door assembly.
Page 284 5026 Remove the two screws (G). Remove the duplex reference edge guide assembly. 4-68 Service Manual...
Page 285: Electrophotographic (Ep) Drive Assembly Removal
5026 Electrophotographic (EP) drive assembly removal “EP drive assembly” on page 7-7 for the part number. Remove the paper tray. Remove the transport belt module and the developer units. See “Transfer module removal” on page 4-154. Remove the cartridges. Remove the low-voltage power supply (LVPS). See “Low-voltage power supply (LVPS) removal”...
Page 286 5026 Disconnect the camshaft/transport cable connector (C), and remove the cable from the cable clamps (D). Unwind the camshaft/transport cable and the cartridge 1/fuser cables (E). 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.
Page 287 5026 Disconnect the cartridge 2/cartridge 3 motor cable (two connectors) (F), and remove the cable from the cable clamps (G). Disconnect the motor drive cable connector (H), and remove the cable from the cable clamps (J). Remove the two screws (K) on the inside Remove the three screws (L) on the front.
Page 288 5026 Remove the seven screws (M). securing the EP drive. 4-72 Service Manual...
Page 289 5026 Remove the 5 V interlock switch cable from the restraint (N) on the backside of the EP drive. Remove the EP drive. Installation notes: Push the actuator rack all the way to the right (A). Pull the link all the way up (B). 4-73 Repair information...
Page 290 5026 Fasten the 5 V interlock cable into the cable retainer (C) on the bottom of the EP drive. 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 291 5026 Hold the drive in place while replacing the first of the seven screws, then continue replacing the rest of the screws (G). 4-75 Repair information...
Page 292 5026 Replace the two screws (H) from the inside. Replace the three screws (J) on front. 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 293 5026 Connect the cartridge 2/cartridge 3 motor cable (two connectors) (N), and make sure the cable is in the cable clamps (O). Connect the camshaft/transport cable connector (P), and make sure the cable is in the cable clamps (R). 4-77 Repair information...
Page 294 5026 Connect the motor drive cable connector (S), and make sure the cable is in the cable clamps (T). 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. Replace the paper tray.
Page 295: Front Door Assembly Removal
5026 Front door assembly removal See the part number for the Front door assembly for the specific model you need on page 7-5. Remove the front access cover assembly. See “Front access cover assembly removal” on page 4-19. Remove the rear frame cover. See “Rear frame cover removal”...
Page 296 5026 Open the front door assembly. Unwrap and remove the cable from the left and right pulleys (C). Close the front door assembly, and remove the mounting screw (D) and the cap (E). 4-80 Service Manual...
Page 297 5026 Open the front door assembly, slide it to the right, and remove. You need to press firmly to slide the front door assembly to the right. Installation note: See “Front door assembly front cable (left) removal” on page 4-82 “The longer cable installs on the left side of the printer.”...
Page 298: Front Door Assembly Front Cable (Left) Removal
5026 Front door assembly front cable (left) removal 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. Note: Leave the photoconductor units on the transport belt when removing.
Page 299 5026 Looking down at the keyed end of the restraint (D), twist the end clockwise, slide the restraint upward through the slit (E), and slip the end of the restraint through the keyed hole (F). Repeat for the other side. 4-83 Repair information...
Page 300 5026 Remove the left cover. See “Left cover removal” on page 4-21. Using a flathead screwdriver, rotate the top cover camshaft clockwise to raise the front door locking mechanism (G). Close the front access door assembly. Release the cable spring (H) from the front door assembly. Note: In order to access the springs, make sure the top access cover is closed.
Page 301 5026 Remove the end of the cable (J) from the frame. Installation note: The longer cable installs on the left side of the printer. 4-85 Repair information...
Page 302: Front Door Assembly Front Cable (Right) Removal
5026 Front door assembly front cable (right) removal 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. Note: Leave the photoconductor units on the transport belt when removing.
Page 303 5026 Looking down at the keyed end of the restraint (D), twist the end clockwise, slide the restraint upward through the slit (E), and slip the end of the restraint through the keyed hole (F). Repeat for the other side. 4-87 Repair information...
Page 304 5026 Remove the right cover. See “Right cover removal” on page 4-37. Close the front access door assembly. Release the spring (G) from the front door assembly. Note: In order to access the springs, make sure the top access cover is closed. Remove the end of the cable (H) from the frame.
Page 305 5026 Installation notes: The shorter restraint cable installs on the right side of the printer. Note: The frame end needs to be wrapped to inside of post for two full turns 4-89 Repair information...
Page 306: Fuser Removal
5026 Fuser removal “Fuser assembly, 115 V” on page 7-5, “Fuser assembly, 230 V” on page 7-5, or “Fuser assembly, 100 V” on page 7-5 for the part number. CAUTION The fuser can be extremely hot. Use care when handling to avoid burns. Turn off the printer.
Page 307: Fuser Ac Cable Removal
5026 Fuser AC cable removal Note: The LVPS to fuser AC cable is black. Remove the top cover assembly. See “Top cover assembly removal” on page 4-43. Turn the top cover assembly over. Lift the locking latch (A) on the connector, slide the connector down, and remove the connector from the keyed hole.
Page 308: Fuser Dc Cable Removal
5026 Fuser DC cable removal Note: The fuser to system board autoconnect cable is red. Remove the top cover assembly. See “Top cover assembly removal” on page 4-43. Turn the top cover assembly over. Remove the connector (A) from the top cover assembly. Warning: You will damage the old connector in the process.
Page 309: Hard Drive Assembly Removal
5026 Hard drive assembly removal Remove the two screws (A), and squeeze the connector to disconnect the hard disk from the system board (B). Pull the hard disk straight out to pop the hard drive standoffs free of the system board. 4-93 Repair information...
Page 310: High-Voltage Power Supply (Hvps) Removal
5026 High-voltage power supply (HVPS) removal “High-voltage power supply” on page 7-11 for the part number. Remove the left cover. See “Left cover removal” on page 4-21. Remove the six mounting screws (A). Release the locking tab (B) from the front, lower corner of the HVPS. 4-94 Service Manual...
Page 311 5026 Disconnect the five connectors (C) from the HVPS. Installation notes: Be sure to replace the spring when replacing the HVPS. See the illustration for proper orientation. 4-95 Repair information...
Page 312: High-Voltage Power Supply (Hvps) Cable Removal
5026 High-voltage power supply (HVPS) cable removal Remove the top cover assembly. See “Top cover assembly removal” on page 4-43. Disconnect the cable connector at JHVPS1 on the system board. Disconnect the cable connector (B) from the HVPS. Remove the cable from the hole through the frame (C), and from the two cable restraints (D). 4-96 Service Manual...
Page 313: Left Bellcrank Assembly Removal
5026 Left bellcrank assembly removal “Left bellcrank assembly, with spring” on page 7-5 for the part number. Remove the left cover. See “Left cover removal” on page 4-21. Remove the C-clip (A). Remove the left bellcrank assembly. 4-97 Repair information...
Page 314: Low-Voltage Power Supply (Lvps) Removal
5026 Low-voltage power supply (LVPS) removal “Low-voltage power supply” on page 7-7 for the part number. Remove the right cover. See “Right cover removal” on page 4-37. Remove the rear frame cover. See “Rear frame cover removal” on page 4-33. Disconnect the connector at JLVPS1 connector (A) on the system board.
Page 315 5026 Installation note: • 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. Note: Not all LVPS FRUs have a switch. Others are switched automatically. •...
Page 316: Motor Driver Card Removal
5026 Motor driver card removal Remove the right cover. See “Right cover removal” on page 4-37. Disconnect the three cables (A). Remove the two screws (B), and remove the motor driver card. 4-100 Service Manual...
Page 317: Motor Driver Cable Removal
5026 Motor driver cable removal Remove the LVPS. See “Low-voltage power supply (LVPS) removal” on page 4-98. Disconnect the connector in JDVR1 (A) on the system board. Disconnect the connector on the motor driver card (B). Remove the cable from the cable from the four cable retainers (C). Installation notes Note the routing of the cable and the cable retainers.
Page 318: Multipurpose Feeder (Mpf)/Duplex Gear And Housing Removal
5026 Multipurpose feeder (MPF)/duplex gear and housing removal See the multipurpose feeder/duplex gear and housing kit for the part number. Remove the paper pick mechanism assembly. See “Paper pick mechanism assembly removal” on page 4-113. Remove the two E-clips (A) from the gears. Remove the three screws (B).
Page 319 5026 Slide a flathead screwdriver up and under the front cover. Slide the remaining two gears and housings off. 4-103 Repair information...
Page 320: Multipurpose Feeder (Mpf)/Duplex Motor Assembly Removal
5026 Multipurpose feeder (MPF)/duplex motor assembly removal “MP feeder/duplex drive parts packet, including” on page 7-5 for the part number. Remove the low-voltage power supply (LVPS). See “Low-voltage power supply (LVPS) removal” on page 4-98. Remove the multipurpose feeder/duplex gear and housing. See “Multipurpose feeder (MPF)/duplex gear and housing removal”...
Page 321 5026 Installation notes: Connect the cable (A) at the motor. Slide the cable tie (B) onto the motor. Insert the motor into the frame. 4-105 Repair information...
Page 322 5026 Replace the screws (C). Slide the housing onto the motor, making sure the four tabs of the housing slide under the cable tie. 4-106 Service Manual...
Page 323: Multipurpose Feeder (Mpf)/Duplex Motor Cable Removal
5026 Multipurpose feeder (MPF)/duplex motor cable removal Remove the multipurpose feeder/duplex motor. See “Multipurpose feeder (MPF)/duplex motor assembly removal” on page 4-104. Disconnect the connector from JDX1 (A) on the system board. Remove the cable from the cable retainers (B). 4-107 Repair information...
Page 324: Operator Panel Cable Removal
5026 Operator panel cable removal Remove the top access cover assembly. See “Top access cover assembly removal” on page 4-40. Remove the nine screws (A), and remove the position guide. Disconnect the operator panel cable connector (B) from the operator panel card. 4-108 Service Manual...
Page 325 5026 Remove the cable from the two cable retainers (C) and routing posts (D). Installation note: Note the routing of the cable and the cable retainers. 4-109 Repair information...
Page 326: Operator Panel Ground Cable Assembly Removal
5026 Operator panel ground cable assembly removal Remove the top access cover assembly. See “Top access cover assembly removal” on page 4-40. Remove the nine screws (A), and remove the position guide. Remove the screw (B), and remove the ground cable connector. Disconnect the ground cable (C).
Page 327: Option Cable Removal
5026 Option cable removal Remove the LVPS. See “Low-voltage power supply (LVPS) removal” on page 4-98. Disconnect the cable connector at JOPT1 (A) on the system board. Replace the rear frame cover to protect the system board. Position the printer on its back. Remove the two screws (B).
Page 328 5026 Press the tabs together to remove the option cable connector. Note: Be sure to note the cable routing for reinstallation. 4-112 Service Manual...
Page 329: Paper Pick Mechanism Assembly Removal
5026 Paper pick mechanism assembly removal “Paper pick assembly” on page 7-5 for the part number. Remove the rear frame cover. See “Rear frame cover removal” on page 4-33. Disconnect the connector in JFDPCK1 (A) and JTRAY1 (B) on the system board. Push the cables through the hole in the frame (C).
Page 330 5026 Remove the transfer module with the photoconductor units attached. Disconnect the transfer module cable (D). Press the two tabs (E) to release the front access cover assembly, and lower the front access door cover. 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 331 5026 Remove the four screws (G) from the bottom pan. 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). 4-115 Repair information...
Page 332 5026 Lower the paper pick mechanism, and remove through the front of the printer. Note: Make sure the JTRAY1 and JTRAY2 connectors do not bind when passing through the frame access hole. Installation notes: Remove the waste toner assembly. See “Waste toner assembly removal”...
Page 333 5026 Reach into the printer, and replace the front right screw (C) to secure the paper pick assembly. Set the printer upright. Secure the remaining three screws (D). Remove the rear frame cover. Route the cables through the hole in the frame, and connect them to JFDPCK1 (E) and JTRAY1 (F). Replace the rear frame cover.
Page 334: Photoconductor Unit Removal
5026 Photoconductor unit removal 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 page 4-2 for additional information. Open the front access door.
Page 335: Pick Arm Roll Removal And Replacement
5026 Pick arm roll removal and replacement “Pick arm roll” on page 7-5 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 replace the pick arm rolls in pairs.
Page 336: Printer Pad Removal
5026 Installation notes: Install the new rubber tires with the surface texture turning in the direction as shown. Note: Feel the rubber surface to verify it turns properly in the direction shown. 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 337: Printhead Removal, Installation, And Adjustment
5026 Printhead removal, installation, and adjustment “Printhead assembly” on page 7-9 for the part number. Service tip—Testing the new printhead “Printhead verification” on page 3-35 for quick way to verify that the existing printhead is failing before installing the new printhead. If the new printhead also fails, the existing printhead is probably working properly, so the system board is probably the failing component.
Page 338 5026 period of time. Place a clean, dry cloth over the transfer module and photoconductor units until they are required. Remove all of the toner cartridges. Remove the right cover and the right side cover (attached). See “Right cover removal” on page 4-37.
Page 339 5026 Remove the three printhead mounting screws (D). 4-123 Repair information...
Page 340 5026 Remove the printhead alignment screw cover (E). While still holding the printhead in place, loosen the printhead alignment screw (F) until the printhead comes out. 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 341 5026 Loosely attach the three printhead mounting screws (B). Warning: Do not fully tighten the printhead mounting screws until skew has been adjusted. Lightly tighten the alignment screw (C). Feed the ground cable through the hole in bottom leftside frame. 4-125 Repair information...
Page 342 5026 Replace the system board support shield screws (E): Loosely attach the two mounting screws (E2) Set the system board support shield in place. Check that the ribbon mirror motor cable (white) and the printhead cable (bottom) do not rub against the edges of the frame.
Page 343 5026 Replace the system board. Place the system board in position. Check that the mirror motor cable and the printhead cable do not rub against the edges of the frame. Replace the nine screws (F) in the system board in the following order: •...
Page 344 5026 Replace all the screws (G) from the left side of the printer, including: • 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 (H) to the ground screw. Reconnect all the cables to the system board.
Page 345 5026 Replace the LVPS. Install the LVPS, and make sure the cable is in the cable guides, and not behind the LVPS. Reconnect the cable to the LVPS. Replace the five LVPS mounting screws. Reconnect the cable in connector JLVPS1 on the system board. Replace the right cover.
Page 346 5026 Scroll down to Quick Test, and press Select . A page similar to this one prints: 4-130 Service Manual...
Page 347 5026 Adjust the printhead alignment screw (A) to change the skew and straighten the image on the printout. 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 until the top alignment marks are the same distance from the top of the media.
Page 348 5026 Remove all of the toner cartridges. Tighten the printhead mounting screws in the following order: B1, B2, and B3. Replace the printhead alignment screw cover (C). Be sure to replace the screw cover so that the notch in the cover faces to the rear of the printer. This makes it much easier to remove the next time.
Page 349 5026 Registration (black) Top Margin Reconnect the power cord to the electrical outlet, but do not turn on the printer yet. Enter Diagnostic mode (press and hold , turn on the printer, and release the buttons when the clock graphic displays). Select REGISTRATION, and press Select Select Quick Test, and press Select or use the last Quick Test you used to adjust skew.
Page 350 5026 Left Margin Adjust the left margin until the points of the left alignment marks touch the edge of the page. • Increasing the value ( ) moves the bottom alignment marks up on the page. • Decreasing the value ( ) moves the bottom alignment marks down on the page.
Page 351 5026 Select Quick Test in the Cyan menu, and press Select ( Two pages print. You may have to print these pages several times until you get T (Top Margin) and Z (Skew) aligned. Do not go to step 2 until T and Z are aligned. The first page is similar to the following: 4-135 Repair information...
Page 352 5026 Determine the line under Fine Adjustment that is closest. If the value is beyond the Fine Adjustment scale, use either of the Coarse Adjustment scales. Enter the number determined from the Fine Adjustment scale or the Coarse Adjustment scales on the part of the page for the “T”...
Page 353 5026 Repeat this process for skew (Z). Don't forget to subtract the T value and add the current cyan Z value to obtain the new skew (Z) value. An example is shown below: 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 354: Right Bellcrank Assembly Removal
5026 Right bellcrank assembly removal “Right bellcrank assembly, with spring” on page 7-5 for the part number. Remove the right cover. See “Right cover removal” on page 4-37. Remove the C-clip (A). Remove the right bellcrank assembly. 4-138 Service Manual...
Page 355: System Board Removal
5026 System board removal See the system board part number for the model you need on page 7-9. CAUTION 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 356 5026 Disconnect all the cables from the system board. Warning: Do not use tools to remove the printhead ribbon cable (B). A flat ribbon cable can be damaged and should be removed gently by hand. Remove the nine screws (C) from the system board. Remove the system board.
Page 357 5026 Installation notes: 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: •...
Page 358 5026 Replace all the screws (B) from the left side of the printer, including: • 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. Reconnect all the cables to the system board.
Page 359: System Board Support Shield Removal
5026 System board support shield removal “System board support shield” on page 7-9 for the part number. Remove the system board. See “System board removal” on page 4-139. Remove the right cover. See “Right cover removal” on page 4-37. Pull the cables through the access holes on the right side of the printer. Remove the five mounting screws (A) from the outer left side of the printer.
Page 360 5026 Remove the five mounting screws (D) from the top and bottom of the support shield. Note: Only the ribbon and mirror motor cables come through the access holes in the system board support shield. Lower and remove the support shield. Be careful not to damage the ribbon cable that routes through the bottom frame of the printer.
Page 361 5026 Replace the remaining system board support shield screws in the following order: • Replace the four screws (B) from the inner right side of the support shield. • Tighten the two mounting screws (A) to the top of the support shield. •...
Page 362: Toner Level Sensor Removal
5026 Toner level sensor removal “Toner level sensor” on page 7-11 for the part number. Note the locations of the toner sensors. Remove the HVPS. See “High-voltage power supply (HVPS) removal” on page 4-94. For the upper two sensors: These sensors are more difficult to reach because the toner is difficult to reach: 4-146 Service Manual...
Page 363 5026 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. Press the other locking tab (B), and remove the sensor. Note: Use a slight pressure on the cable to keep the first locking tab from relatching, while you disconnect the second locking tab.
Page 364: Top Cover Camshaft Assembly Removal
5026 Top cover camshaft assembly removal “Top cover camshaft assembly” on page 7-12 for the part number. Open the front cover access door cover. Open the top access cover. Remove the two screws (A) from the links on either side, and disengage the links. Rotate the top access cover back, and place a screwdriver in the cable hole in the frame to hold the cover in place.
Page 365 5026 Remove the fuser. See “Fuser removal” on page 4-90. Remove the top screw (B), and loosen the other screw (C). This will allow you to flex the EP drive. Remove the two screws (D). 4-149 Repair information...
Page 366 5026 Rotate the camshaft up using the camshaft actuator handles (E) so you can access the other two screws (F), and remove them. Flex the EP drive assembly to remove the right side of the camshaft from the boss (G), and lift to remove the camshaft.
Page 367 5026 Installation notes: 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. 4-151 Repair information...
Page 368 5026 Rotate the camshaft up using the camshaft actuator handle (C), and make sure the gears on the right side mesh so the first gear tooth of the camshaft aligns with the first two gear teeth of the EP drive actuator rack (D).
Page 369 5026 Rotate the camshaft using the camshaft actuator handle, and replace the two screws (G). Replace the screw in the EP drive that allowed you to flex the EP drive, and tighten the other screw (see step 6 of the removal). Replace the top access cover assembly.
Page 370: Transfer Module Removal
5026 Transfer module removal “Transfer module” on page 7-5 for the part number. 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. Note: Leave the photoconductor units on the transport belt when removing.
Page 371 5026 Note: If you are removing the transfer module to access another part, leave the photoconductor units attached, and you are done. If you need to replace the transport belt, continue with the next step to remove the separate photoconductor units. Remove the photoconductor units.
Page 372: Transport Cable Removal
5026 Transport cable removal Remove the LVPS. See “Low-voltage power supply (LVPS) removal” on page 4-98. Remove the transport belt assembly. Leave the photoconductor units in place. See “Transfer module removal” on page 4-154. Disconnect the transport cable from the system board at JTPS1 connector (A). 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.
Page 373 5026 Extract the cable through the opening in the frame to the right side of the printer (B). Remove the cable from the five cable restraints (C). Remove the cable from the three openings in the cable channel (D) on the right side of the front access door.
Page 374: Transport Motor Cable Removal
5026 Remove the cable through the cable channel (F). Transport motor cable removal Remove the right cover. See “Right cover removal” on page 4-37. Disconnect the cable from the transport motor drive (A). Disconnect the cable from the transport motor (B). Remove the cable.
Page 375: Usb Connector Cable Removal (Front Panel)
5026 USB connector cable removal (front panel) Remove the top access door cover assembly. See “Top access cover assembly removal” on page 4-40. Remove the nine screws (A), and remove the position guide. 4-159 Repair information...
Page 376: Waste Toner Assembly Removal
5026 Disconnect the cable connector (B), Disconnect the ground cable (C) from the grounding assembly, and release the ground cable from the cable clamp (D). Remove the USB connector. Waste toner assembly removal Not a FRU. Press the waste toner release latch (A). Swing the front of the waste toner assembly away from the printer, and remove.
Page 377: Wireless Network Antenna Removal
5026 Wireless network antenna removal Remove the wireless network card. see “Wireless network card removal” on page 4-162. Disconnect the wireless network antenna cable (A) from the wireless network card. With pliers, squeeze the inner tabs (B), and pull the antenna out. Pull the cable through, and remove the antenna with the cable.
Page 378: Wireless Network Card Removal
5026 Wireless network card removal Remove the rear frame cover. See “Rear frame cover removal” on page 4-33. Disconnect the wireless cable from the system board at J5 (A), by squeezing the tabs at either end together. Remove the two screws (B) that secure the card into place. 4-162 Service Manual...
Page 379 5026 Pop the posts (C) on the card from the sockets (holes) in the system board. 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 380: Option Removals
5026 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 from the base machine and the caster base. Open the HCIT media tray assembly (A) until it reaches a stop. Press the latches (B) on the left and right side of the HCIT tray slides.
Page 381: Hcit Front Tray Cover Removal
5026 HCIT front tray cover removal 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 382: Hcit Rear Cover Removal
5026 HCIT rear cover removal Remove the four screws (A) securing the HCIT rear cover to the drawer. Remove the HCIT rear cover. 4-166 Service Manual...
Page 383: Hcit Right Cover Removal
5026 HCIT right cover removal 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 4-164.
Page 384: Hcit Left Cover Removal
5026 HCIT left cover removal 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 4-164.
Page 385: Feed With Bushing Roller Removal
5026 Feed with bushing roller removal Remove the high-capacity input tray (HCIT) top plate assembly. See “Top plate assembly removal” on page 4-177. 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. Remove the screw (B) securing the 46T gear (C) to the top plate assembly.
Page 386: Hcit Controller Board Assembly Removal
5026 HCIT controller board assembly removal Remove the HCIT right cover. See “HCIT right cover removal” on page 4-167. Disconnect the seven connectors (A) from the HCIT controller board. 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. Remove the HCIT controller board.
Page 387: Hcit Drawer Slide Assembly Removal
5026 HCIT drawer slide assembly removal 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. See “HCIT media tray assembly removal”...
Page 388 5026 Release the hooks (B) securing the pass thru sensor to the top plate assembly. 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. Remove the elevator motor with sensor.
Page 389: Hcit Pick Arm Roll Removal
5026 HCIT pick arm roll removal Remove the high-capacity input tray (HCIT) media tray assembly. See “HCIT media tray assembly removal” on page 4-164. Pull the autocompensator pick arm (A) down. Remove the pick arm roll (B) from the pick roll assembly (C). Repeat for the other pick arm roll (D).
Page 390: Hcit Slide Assembly With Spring Removal
5026 HCIT slide assembly with spring removal Remove the HCIT controller board assembly. See “HCIT controller board assembly removal” on page 4-170. Disconnect the two springs (A) from the frame. Note: Leave the springs attached to the cam size sensing plate (B) and the actuator switch. Slide the cam size sensing plate (B) through the access hole in the rear side frame.
Page 391 5026 Remove the four screws (E) securing the card mount option to the frame. 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 392: Photointerrupter Sensor With Cable Assembly Removal
5026 Photointerrupter sensor with cable assembly removal Remove the high-capacity input tray (HCIT) right cover. See “HCIT right cover removal” on page 4-167. Disconnect the photointerrupter sensor cable connector (A) from the HCIT controller board. Turn the drawer rear side down, and use 4.0 mm wrench to remove the four Allen screws (B) securing the counterweight to the rear frame.
Page 393: Top Plate Assembly Removal
5026 Remove the screw (C) securing the sensor to the rear frame, and then release the hooks (D). Note: Remove the cable from the restraint, and observe the routing for reinstallation. Remove the photointerrupter sensor with cable assembly. Top plate assembly removal Remove the high-capacity input tray (HCIT) right cover.
Page 394 5026 Release the hooks (B) securing the pass thru sensor from the top plate assembly. Remove the fourteen screws (C) securing the top plate assembly to the frame. Remove the top plate assembly. 4-178 Service Manual...
Page 395: Connector Locations
5026 5. Connector locations Locations Connector locations...
Page 396: Connectors
5026 Connectors System board diagram JFUSER1 JHVPS1 JBLW1 JBIN1 JOPP1 JSB1 JFAN1 JBOR1 JMIRR1 JCVR1 JLVPS2 JCARTP1 JCARTS1 JBOOT1 JUSB1 JDIMM1 JCARTS2 JTLBT1 JCARTP2 JFMUSB1 JTWF1 JTDBUG1 JDVR1 JTPS1 JOPT1 JDX1 JFDS1 JINT1 JFDPCK1 JTRAY1 JSEC1 JPH1 JT12 Service Manual...
Page 397 5026 System board listing “System board diagram” on page 5-2. Connector Pin # Signal Pin # Signal Ground Internal Service Port (ISP) USBOUT+ USBOUT- Ground USBIN+ USBIN- Ground RESET +5 V dc I2C_DAT +5 V dc I2C_CLK +5 V dc D_PHY_TX+ Network D_PHY_TX-...
Page 398 5026 System board listing (continued) “System board diagram” on page 5-2. Connector Pin # Signal Pin # Signal JBLW1 S_BLOW_FG Cartridge blower V18_BLOW_RTN BLT_BLOW_FB JBOOT1 +3.3 V dc +3.3 V dc or Ground JBOR1 V24_BOR- COD BCD motor V24_BOR+ JCARTP1 V48_CART1_WIND_W Cartridge 1/fuser motors V48_CART1_WIND_V...
Page 399 5026 System board listing (continued) “System board diagram” on page 5-2. Connector Pin # Signal Pin # Signal JCFT1 CFT1 Functional tester I/F CFT2 Ground CFT3 CFT4 Ground CFT5 CFT6 JCONF1 PLL_CFG1 +1.8 V dc H Model only PLL_CFG2 JCVR1 V48_25V_CVR Cover open switch (25v) V48_25VD_CVR...
Page 400 5026 System board listing (continued) “System board diagram” on page 5-2. Connector Pin # Signal Pin # Signal JFDS1 VS12_FDS Feed thru sensor S_FDS_FB Ground JFMUSB1 Ground Front panel USB port USB_DM1 USB_DP1 Ground JFUSER1 S_FSR_BLT2_SNS GD_FSR_BLT1_RTN Belt, exit, bubble sensors VS_BUB_LED S_FSR_BUB_SNSD Ground...
Page 401 5026 System board listing (continued) “System board diagram” on page 5-2. Connector Pin # Signal Pin # Signal JMIRR1 MM_REFR Mirror motor TG_MM_LOCK TG_MM_START Ground +25VC JOPP1 I2C_DATA Operator panel (12C) V12_PANEL+5V I2C_CLK Ground TG_OP_IRQ- +3.3 V dc Ground JOPT1 +25VE Ground Option port...
Page 402 5026 System board listing (continued) “System board diagram” on page 5-2. Connector Pin # Signal Pin # Signal 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 VS12_JPH1 TG_VDO_SHADE_A Ground D_VDO_D2+ D_VDO_D2- Ground D_VDO_D+ D_VDO_D- Ground D_VDO_C2+ D_VDO_C2- Ground D_VDO_C+ D_VDO_C-...
Page 403 5026 System board listing (continued) “System board diagram” on page 5-2. Connector Pin # Signal Pin # Signal JPH1 D_VDO_A- Printhead Ground (continued) 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 S_SB_M Ground S_SB_K Ground JSEC1 Security jumper Ground Ground Ground...
Page 404 5026 System board listing (continued) “System board diagram” on page 5-2. Connector Pin # Signal Pin # Signal JTPS1 V12_LED_ON VS12_3_3V Toner Patch Sensor GD_TPS_SNS GD_TPS_PWM1 GD_TPS_SNS_RTN GD_TPS_TNR_SNS Ground I2C_CLK_TB 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 S_TRAY_NMT...
Page 405: 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 406: Cleaning The Printhead Lenses
5026 Cleaning the printhead lenses Clean the printhead lenses when you encounter print quality problems. Open the front access door. Warning: Potential Damage: To avoid overexposing the photoconductor units, do not leave the front door open for more than 10 minutes. Remove all four toner cartridges.
Page 407: Parts Catalog
NS: (Not shown) in the Asm-Index column indicates that the part is procurable but is not pictured in the illustration. • Model information used in the parts catalog: Abbreviation Machine type Printer name Description used and model 5026-210 Lexmark C734n Network 5026-230 Lexmark C734dn Duplex and network 5026-280 Lexmark C734dnw Duplex, network, and wireless 5026-410 Lexmark C736n Network...
Page 408: Assembly 1: Covers
5026 Assembly 1: Covers Service Manual...
Page 409 5026 Assembly 1: Covers Units/ Units/ Index Description mach 1—1 40X5114 Top access cover assembly 40X5120 Operator panel buttons parts package, including: • Back button • Menu button • Stop button • Navigation select button • Navigation up button • Navigation down button •...
Page 410: Assembly 2: Front
5026 Assembly 2: Front Service Manual...
Page 411 5026 Assembly 2: Front Units/ Units/ Index Description mach 2—1 40X5093 Fuser assembly, 115 V 40X5094 Fuser assembly, 230 V 40X5095 Fuser assembly, 100 V Printer pad, included in parts packet, screws (P/N 40X5136) 40X1446 Right bellcrank assembly, with spring 40X5132 MP feeder/duplex drive parts packet, including •...
Page 412: Assembly 3: Right
5026 Assembly 3: Right Service Manual...
Page 413 5026 Assembly 3: Right Units/ Units/ Index Description mach 3—1 40X5125 EP drive assembly 40X5124 Low-voltage power supply 40X5126 Motor driver card 40X5131 MP feeder/duplex motor 40X5128 24 V interlock switch 40X5127 5 V interlock switch Parts catalog...
Page 414: Assembly 4: Rear
5026 Assembly 4: Rear Service Manual...
Page 415 5026 Assembly 4: Rear Units/ Units/ Index Description mach 4—1 40X5123 Printhead assembly 40X5107 System board support shield 40X5160 System board (network), 210, 230, 280 40X5154 System board (network), 410, 430, 439 40X0269 Power cord—USA, Canada, Bolivia, Peru 40X0288 Power cord (8 ft.)—Argentina 40X0301 Power cord (8 ft.)—Australia, New Zealand 40X3141...
Page 416: Assembly 5: Left
5026 Assembly 5: Left (4 places) (4 places) (4 places) (4 places) (4 places) (4 places) (8 places) 7-10 Service Manual...
Page 417 5026 Assembly 5: Left Units/ Units/ Index Description mach 5—1 40X5137 Contact springs kit, including: • A—Torsion PCD contact spring • B—Torsion CR contact spring • C—Contact spring cap • D—Charge roll contact spring • E—HVPS TAR contact spring • F—HVPS doctor/developer contact spring •...
Page 418: Assembly 6: Top
5026 Assembly 6: Top Units/ Units/ Index Description mach 6—1 40X5122 Color-On-Demand assembly 40X5109 Cooling fan 40X5130 Top cover camshaft assembly 40X5108 Cartridge cooling fan 7-12 Service Manual...
Page 419: Assembly 7: Cable Parts Packet
5026 Assembly 7: Cable parts packet Units/ Units/ Index Description mach 7—2 40X5135 Cables parts packet, including • A—Cartridge motor 1 to fuser cable (1) • B—Fuser AC cable (1) • C—Fuser DC cable (1) • E—MP feeder/duplex motor cable (1) •...
Page 420: Assembly 8: Optional 550-Sheet Media Drawer And Tray
5026 Assembly 8: Optional 550-sheet media drawer and tray Units/ Units/ Index Description 8—1 40X5140 550-sheet tray option (drawer and tray assembly) 40X5168 Pick arm roll, 550-sheet tray 40X5141 550-sheet tray assembly 7-14 Service Manual...
Page 421: Assembly 9: Optional Special Media Tray Assembly
5026 Assembly 9: Optional special media tray assembly Units/ Units/ Index Description opt. 9—1 40X5142 Special media assembly, including tray 40X5152 Pick arm roll, 550-sheet drawer 40X5143 Special media tray assembly 7-15 Parts catalog...
Page 422: Assembly 10: Optional High-Capacity Input Option (Hcit)
5026 Assembly 10: Optional high-capacity input option (HCIT) 7-16 Service Manual...
Page 423 5026 Assembly 10: Optional high-capacity input option (HCIT) Units/ Units/ Index Description option 10—1 40X5157 Top plate assembly 40X5168 HCIT pick arm roll 40X5156 Feed with bushing 40X5149 HCIT rear cover 40X4585 Tray latch with spring 40X5159 HCIT controller card assembly 40X4587 Slide assembly with springs 40X5147...
Page 424: Assembly 11: Options And Features
5026 Assembly 11: Options and features 7-18 Service Manual...
Page 425 Traditional Chinese font card 40X5970 Simplified Chinese font card 40X5972 Japanese font card 40X0038 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 disk assembly...
Page 426 5026 7-20 Service Manual...
Page 427: Index
5026 Index 4-108 Numerics operator panel 4-110 operator panel ground 2-16 2-18 1xx service error codes – 4-111 option cable 24 V interlock switch 4-156 transport cable 7-12 parts catalog 4-158 transport motor cable 4-47 removal 4-159 USB connector 2-119 service check 7-13 cables, parts catalog...
Page 428 5026 3-25 3-21 Prt Quality Pages Parallel 1 Strobe Adjustment 3-25 Reset Fuser Cnt Transfer 3-26 Size Sensing Tray 1 3-31 USB Speed Print Tests 3-30 3-10 Wipe Disk input source tests 3-11 contact springs Prt Quality Pgs 7-10 parts catalog Printer Setup 4-59 3-20...
Page 429 5026 error codes and messages 2-16 2-18 1xx service error codes – input sensor 2-18 2-29 2xx paper jams – 2-125 service check 2-15 3x–8x attendance messages – 2-30 2-36 9xx service error codes – 3-38 error jam locations jams ESD-sensitive parts 3-39 clearing jams...
Page 430 5026 print quality 2-130 background operator panel 2-131 blank page 4-28 bezel 2-132 blurred or fuzzy print 4-29 buttons 2-132 half-color page 4-108 cable removal 2-132 horizontal banding description 2-133 horizontal line indicator light 2-133 insufficient fusing parts catalog 2-133 missing image at edge 4-24 removal...
Page 431 5026 4-40 3-21 top access cover assembly Reset Color Cal 4-43 3-25 top cover Reset Fuser Cnt 4-36 4-82 4-86 covers, rear upper cover restraint cable, removal 4-63 4-37 display detent spring right cover, removal 4-66 duplex reference edge guide 4-69 electrophotographic (EP) process drive assembly safety information...
Page 432 5026 2-114 945.xx, 947.xx—Transfer roll error transfer roll 2-116 2-114 950.00–950.29-EPROM mismatch service check 2-117 956.xx-system board failure transport cable 2-120 4-156 bubble sensor removal 2-122 4-158 dead printer transport motor cable, removal 2-123 2-135 exit sensor tray linking, service check 2-125 input sensor 2-126...
Page 433: Part Number Index
5026 Part number index Description Page 40X0038 Bar code and Forms card - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7-19 40X0063 Card for IPDS and SCS/TNe - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
Page 434 5026 40X5118 Top access cover parts package - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 40X5119 Top access cover links (slider cam) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 40X5120...
Page 435 5026 40X5969 Korean font card - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7-19 40X5970 Simplified Chinese font card - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
Page 436 5026 I-10 Service Manual...

This manual is also suitable for:

C736

Lexmark C734 Service Manual

Notices and Safety Information

Laser Notice

Lithium Warning

Safety Information

Preface

Conventions

General Information

Models

Options

Printer Specifications

Media Specifications

Tools Required for Service

Acronyms

Diagnostic Information

Start

Operator Panel and Menus

Power-On Self Test (POST) Sequence

Symptom Tables

User Status and Attendance Messages

Error Codes and Messages

Service Checks

XX, 161.XX-Motor Error (Option Tray 2) Service Check

XX, 163.XX-Motor Error (Option Tray 3) Service Check

XX, 165.XX-Motor Error (Option Tray 4) Service Check

XX, 167.XX-Motor Error (Option Tray 5) Service Check

XX-Motor (HCIT Elevator) Error Service Check

250.03-Paper Jam Error Service Check

201.31-Paper Jam Error Service Check

Paper Jam Error Service Check

230.05-Paper Jam Error Service Check

Paper Jam Service Check

242.11-Paper Jam Service Check

Paper Jam Service Check

Paper Jam Service Check

Paper Jam Service Check

Paper Jam Service Check

Paper Jam Service Check

243.11-Paper Jam Service Check

Paper Jam Service Check

Paper Jam Service Check

Paper Jam Service Check

Paper Jam Service Check

Paper Jam Service Check

244.11-Paper Jam Service Check

Paper Jam Service Check

Paper Jam Service Check

Paper Jam Service Check

Paper Jam Service Check

Paper Jam Service Check

245.11-Paper Jam Service Check

Paper Jam Service Check

Paper Jam Service Check

Paper Jam Service Check

Paper Jam Service Check

Transfer Module Error Service Check

Engine Software Error, NVRAM MGR Problem Service Check

920.25-Transfer Module Missing Error Service Check

POST (Power-On Self Test) Error Service Check

POST (Power-On Self Test) Printhead Motor Not Connected Error Service Check

POST (Power-On Self Test) Error Service Check

920 09-POST (Power-On Self Test)-Four Toner Sensors Not Connected Error Service

Check

920.10-POST (Power-On Self Test)-Three Toner Sensors Not Connected Error Service

Check

920.11-POST (Power-On Self Test)-Two Toner Sensors Not Connected Error Service

Check

POST (Power-On Self Test)-One Sensor Not Connected Error Service Check

920.14-POST (Power-On Self Test)-Cartridge Motor 2 Not Connected Error Service

POST (Power-On Self Test) Cartridge Motor 1 Not Connected Error Service Check

Check

920.20-POST (Power-On Self Test)-Bad Transfer Module NVRAM Data Error Service Check

POST (Power-On Self Test)-Bad Printhead NVRAM Data Error Service Check

POST (Power-On Self Test)-Output bin Cable Not Connected Error Service Check

Diagnostic Aids

Diagnostics Menu

500 D

Configuration Menu (CONFIG MENU)

Front Cover Locked in Place

Printhead Verification