Sharp MX-B468P Service Manual
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Sharp MX-B468P Service Manual

Digital laser printer
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Service Manual Part 1
[1]
PRODUCT OUTLINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
[2]
CONSUMABLE PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
[3]
UPGRADING AND MIGRATING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
[4]
REPLACING PARTS AND SUPPLIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
[5]
PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Service Manual Part 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Parts marked with "
" are important for maintaining the safety of the set. Be sure to replace these parts with
specified ones for maintaining the safety and performance of the set.
SERVICE MANUAL
DIGITAL LASER PRINTER
CONTENTS
SHARP CORPORATION
CODE: 00ZMXB468PS2E
MX-B468P
MODEL
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.

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  • Page 1 SERVICE MANUAL CODE: 00ZMXB468PS2E DIGITAL LASER PRINTER MX-B468P MODEL CONTENTS Service Manual Part 1 PRODUCT OUTLINE ..........1-1 CONSUMABLE PARTS .
  • Page 2 [1] PRODUCT OUTLINE (OPTION) Operation panel Printer 2.8 inch Cannot be installed for desktop use. MX-B468P [1] PRODUCT OUTLINE 1-1...
  • Page 3 　MarkNet N8230 Fiber Ethernet　100BASE-FX(LC), 　27X0912 ● (Local Option) 　1000BASE-SX(LC)　(Fiber + side cover) 　27X6430 　MarkNet N8450 Wireless Card with BLE ● (Local Option) 82S1205 IPDS License ●(License option) 82S1206 *1 Bar Code License ●(License option) *1 : Requires optional 57X9528 MX-B468P [1] PRODUCT OUTLINE 1-2...
  • Page 4 MPF pick roller and separator pad MX-B46KA1 Pick tires Transfer roller Europe, Middle East, Africa Item Content Model name Number Life Fuser Maintenance kit（220V) Fuser (220V) 200K MPF pick roller and separator pad MX-B46KA Pick tires Transfer roller MX-B468P [2] CONSUMABLE PARTS 2-1...
  • Page 5 MX-B468P [3] UPGRADING AND MIGRATING Service Manual Refer to the User's guide MX-B468P [3] UPGRADING AND MIGRATING 3-1...
  • Page 6 MX-B468P [4] REPLACING PARTS AND SUPPLIES Service Manual Refer to the User's guide MX-B468P [4] REPLACING PARTS AND SUPPLIES 4-1...
  • Page 7 550-sheet tray insert (optional tray) 54 Assembly 14 Optional trays 41X1221 0SP41X1221/// 250-sheet tray insert (optional tray) 55 Assembly 15 Printer stand 41X0775 0SP41X0775/// Nonlocking caster 56 Assembly 15 Printer stand 41X0774 0SP41X0774/// Locking caster MX-B468P [5] PARTS LIST 5-1...
  • Page 8 MX-B468P Service Manual Part 2 • Start diagnostics • Maintenance • Safety and notices • Trademarks • Index...
  • Page 9 4602 Descriptions in page 2 are not applicable to this model. Therefore it was deleted.
  • Page 10 4602 Table of contents Product information..................2 Edition notice....................2 Notices, conventions, and safety information......... 11 Laser notice................................11 Avis relatif à l'utilisation du laser........................11 Aviso de láser............................... 11 Laser-Hinweis..............................12 Conventions.................................12 Conventions.................................12 Convenciones..............................13 Konventionen...............................13 Safety information.............................. 14 General information..................21 Printer model configurations........................... 21 Finding the printer serial number........................21 Selecting paper..............................22 Paper guidelines................................

  • Page 11: Table Of Contents

    4602 Using Safe Mode ................................. 32 Replace cartridge, printer region mismatch ......................33 Non‑Lexmark supply ..............................33 Securing the printer............................34 Resetting the printer without admin credentials ....................34 Using the security reset jumper ..........................34 Data security notice ..............................35 Fixing print quality issues..........................
  • Page 12 4602 4y user attendance errors............................91 5y user attendance errors............................95 6y user attendance errors............................95 7y user attendance errors ............................96 8y user attendance errors............................97 Printer hardware errors..........................100 111 errors ..................................100 121 errors..................................101 126 errors..................................103 128 errors..................................104 133 errors ..................................105 140 errors..................................105 155 errors..................................106...
  • Page 13 4602 Service Engineer menu..........................135 Entering the SE Menu..............................135 General SE Menu................................136 Network SE Menu............................... 137 Parts removal.....................139 Important removal information........................139 Removal precautions..............................139 Handling ESD‑sensitive parts...........................141 Critical information for controller board or engine board replacement............141 Restoring the printer configuration........................142 Restoring solutions, licenses, and configuration settings ................145 Updating the printer firmware ..........................146 Backing up eSF solutions and settings ........................
  • Page 14 4602 Front removals..............................192 Front cover removal..............................192 MPF with front access cover removal ........................192 Control panel removal...............................193 Transfer roller removal ..............................195 Jam access cover removal ............................195 Sensor (front door) removal.............................196 MPF pick roller and separator pad removal ......................198 Sensor (MPF paper present) removal ........................201 Front input guide removal............................
  • Page 15 4602 Replacing the pick tires ............................250 Resetting the supply usage counters ........................252 Component locations................253 Printer configurations.............................253 Printer roller locations............................254 Printer sensor locations..........................255 Maintenance....................257 Inspection guide..............................257 Scheduled maintenance..........................257 Maintenance kits................................257 Resetting the maintenance counter ........................259 Cleaning the printer............................259 Cleaning the touch screen...........................260 Cleaning the printhead mirror........................
  • Page 16 4602 Printer specifications................301 Power consumption............................301 Product power consumption ...........................301 Sleep Mode..................................301 Hibernate Mode.................................302 Off mode..................................302 Total energy usage ..............................302 Applicability of Regulation (EU) 2019/2015 and (EU) 2019/2020............302 Selecting a location for the printer......................302 Noise emission levels............................ 303 Temperature information..........................304 Options and features................
  • Page 17 4602 Table of contents...
  • Page 18 4602 Notices, conventions, and safety information Laser notice The printer is certified in the U.S. to conform to the requirements of DHHS 21 CFR, Chapter I, Subchapter J for Class I (1) laser products, and elsewhere is certified as a Class 1 consumer laser product conforming to the requirements of IEC 60825-1:2014, EN 60825-1:2014+A11:2021, and EN 50689:2021.
  • Page 19 4602 Wavelength (nanometers): 650–670 Laser-Hinweis Der Drucker wurde in den USA zertifiziert und entspricht den Anforderungen der Vorschriften DHHS 21 CFR Kapitel I, Unterkapitel J für Laserprodukte der Klasse I (1), andernorts ist er als Verbraucher-Laserprodukt der Klasse 1 zertifiziert, das den Anforderungen von IEC 60825-1 entspricht:2014, EN 60825-1:2014+A11:2021 und EN 50689:2021.
  • Page 20 4602 ATTENTION—RISQUE D'ELECTROCUTION : Signale un risque d'électrocution. ATTENTION—SURFACE CHAUDE : Signale un risque de brûlure de contact. ATTENTION—RISQUE DE BASCULEMENT : Signale un risque d'écrasement. ATTENTION : RISQUE DE PINCEMENT : Signale un risque de pincement entre des pièces mobiles. Convenciones Nota: Las notas señalan información que puede serle útil.
  • Page 21 4602 Safety information • The safety of this product is based on testing and approvals of the original design and specific components. The manufacturer is not responsible for safety in the event of use of unauthorized replacement parts. • The maintenance information for this product has been prepared for use by a professional service person and is not intended to be used by others.
  • Page 22 4602 ATTENTION—RISQUE DE BLESSURE : La batterie lithium de ce produit n'est pas destinée à être remplacée. Si vous ne respectez pas les instructions de remplacement de la batterie, vous risquez de provoquer une explosion. Ne rechargez pas, ne désassemblez pas et ne brûlez pas la batterie au lithium.
  • Page 23 4602 PRECAUCIÓN: POSIBLES DAÑOS PERSONALES: No utilice este producto con cables alargadores, regletas de varias tomas, cables alargadores de varias tomas o sistemas de alimentación ininterrumpida. La potencia de este tipo de accesorios puede sobrecargarse fácilmente si se utiliza una impresora láser, lo que puede dar lugar a que el rendimiento de la impresora sea bajo, a daños materiales o a posibles incendios.
  • Page 24 4602 VORSICHT – MÖGLICHE VERLETZUNGSGEFAHR Mit diesem Produkt darf nur ein Lexmark Inline Surge Protector verwendet werden, der vorschriftsgemäß zwischen dem Drucker und dem mitgelieferten Netzkabel angeschlossen ist. Die Verwendung von nicht von Lexmark stammenden Überspannungsschutzgeräten kann zu Brandgefahr, Beschädigung von Eigentum oder einer eingeschränkten Druckerleistung führen.
  • Page 25 4602...
  • Page 26 4602 Descriptions in page 19 to 20 are not applicable to this model. Therefore it was deleted.
  • Page 27 4602...
  • Page 28 4602 General information Printer model configurations MX-B468P printer is network‑capable, laser printer. The printer supports monochrome printing and is embedded with home screen solutions and applications. All information in this service manual pertains to all models unless explicitly noted. The printers are available in the following models: Model Configurations...
  • Page 29 4602 Locate the serial number. Selecting paper Paper guidelines Use the appropriate paper to prevent jams and help ensure trouble‑free printing. • Always use new, undamaged paper. • Before loading paper, know the recommended printable side of the paper. This information is usually indicated on the paper package.
  • Page 30 4602 Smoothness Paper smoothness directly affects print quality. If paper is too rough, toner cannot fuse to it properly. If paper is too smooth, it can cause paper feeding or print quality issues. We recommend the use of paper with 50 Sheffield points.
  • Page 31 4602 Storing paper Use these paper storage guidelines to help avoid jams and uneven print quality: • Store paper in its original wrapper in the same environment as the printer for 24 to 48 hours before printing. • Extend the time several days if the storage or transportation environment is very different from the printer environment.
  • Page 32 4602 Paper size Standard 250‑ or Optional 250‑ or Multipurpose feeder Two‑sided 550‑sheet tray 550‑sheet tray printing A5 Landscape (LEF) 210 x 148 mm (8.27 x 5.83 in.) 105 x 148 mm (4.13 x 5.83 in.) JIS B5 182 x 257 mm (7.17 x 10.1 in.) Oficio (Mexico) 216 x 340 mm...
  • Page 33 4602 Paper size Standard 250‑ or Optional 250‑ or Multipurpose feeder Two‑sided 550‑sheet tray 550‑sheet tray printing Universal 76.2 x 127 mm to 215.9 x 359.92 mm (3 x 5.83 in. to 8.5 x 14.17 in.) Universal 25.4 x 25.4 mm to 215.9 x 355.6 mm (1 x 1 in.
  • Page 34 4602 Supported paper types Paper type Standard 250‑ or Optional 250‑ or Multipurpose feeder Two‑sided printing 550‑sheet tray 550‑sheet tray Plain paper Card stock Recycled Paper labels* Bond Letterhead Preprinted Colored Paper Light Paper Heavy Paper Rough/Cotton Envelope Rough envelope * One‑sided paper labels are supported for occasional use of less than 20 pages per month.
  • Page 35 4602 • #2 Phillips screwdriver, magnetic • #2 Phillips screwdriver, magnetic short-blade • Torx screwdriver (T20 head) • Needle‑nose pliers • Diagonal side cutters • Spring hook • Feeler gauges • Analog or digital multimeter • 3‑mm ball hex wrench •...
  • Page 36 4602 Diagnostics and troubleshooting Troubleshooting precautions CAUTION—SHOCK HAZARD: When you see this symbol on the product, there is a danger from hazardous voltage in the area of the product where you are working. Unplug the product before you begin, or use caution if the product must receive power in order to perform the task. CAUTION—SHOCK HAZARD: This product uses an electronic power switch.
  • Page 37 4602 Precauciones durante la solución de problemas PRECAUCIÓN: PELIGRO DE DESCARGAS ELÉCTRICAS: Cuando vea este símbolo en el producto, existe peligro de tensiones peligrosas en el área del producto en la que está trabajando. Desconecte el producto antes de empezar o tenga cuidado si el producto debe recibir alimentación a fin de realizar la tarea.
  • Page 38 4602 VORSICHT – QUETSCHGEFAHR: Um das Risiko einer Quetschung zu vermeiden, gehen Sie in Bereichen, die mit diesem Etikett gekennzeichnet sind, mit Vorsicht vor. Quetschungen können im Bereich von beweglichen Komponenten auftreten, wie z. B. Zahnrädern, Klappen, Fächern und Abdeckungen. Troubleshooting overview Performing the initial troubleshooting check Before you start the troubleshooting procedures, perform the following checks:...

  • Page 39: Using Safe Mode

    4602 The EP drive drives the developer shaft located in the imaging unit. The exit rollers turn. The control panel indicator light blinks. Ready appears on the display. Using Safe Mode Safe Mode lets the printer continue to operate in a special limited mode in which it attempts to continue offering as much functionality as possible despite known issues.

  • Page 40: Replace Cartridge, Printer Region Mismatch

    The printer has detected a non‑Sharp supply or part installed in the printer. Your Sharp printer is designed to function best with genuine Sharp supplies and parts. Use of third-party supplies or parts may affect the performance, reliability, or life of the printer and its imaging components.

  • Page 41: Securing The Printer

    4602 Read the warning message, and then touch Continue. Using two fingers, touch the display for 15 seconds to clear the message. Note: If you are unable to reset the supply usage counters, then return the supply item to the place of purchase.

  • Page 42: Data Security Notice

    4602 Locate the security jumper (A) on the controller board. Move the jumper to cover the middle and exposed prongs. Note: The movement of the jumper triggers the reset, not the jumper position. Attach the controller board shield. Turn on the printer. Notes: •...

  • Page 43: Fixing Print Quality Issues

    4602 The following parts can store memory: • Engine board • User interface controller card (UICC) • Controller board • Optional hard disks Note: The printer engine board and controller board contain NVRAM. Erasing printer memory To erase volatile memory, turn off the printer. To erase nonvolatile memory, do the following: From the control panel, navigate to Settings >...

  • Page 44: Gray Background Or Toner Fog

    4602 • Load 20–21‐lb bond (75–80 g/m ) plain letter or A4 paper. Make sure that the paper guides are properly set and locked. From the home screen, set the paper size and type to match the paper loaded in the tray. •...
  • Page 45 4602 Check for any packing material left on the imaging unit, including the red plastic separator plastic (A). Note: You may need a pair of pliers to remove a piece of broken plastic inside the imaging unit. Check the charge roller contact (B) on the right side of the imaging unit for damage and contamination. Make sure that the connections between the controller board and the power supply are properly connected.

  • Page 46: Blank Pages

    4602 Blank pages Note: Before doing this print quality check, see “Initial print quality check” on page Check if the printer is using a genuine and supported Lexmark toner cartridge. Note: If the printer is using a third‑party toner cartridge, then refer the users to their supplier. Check the imaging unit for the following: Residual packing material Damage and improper installation...
  • Page 47 4602 If the couple is stuck, then reach inside the printer and manually reposition the coupler as shown. Check if the imaging unit contact (A) is bent, damaged, or not in proper contact with the imaging unit. Make sure that the connections between the controller board and power supply are properly connected.

  • Page 48: Print Is Too Dark

    4602 • Coupler in bad condition For more information, see “Main drive gearbox removal” on page 166. Make sure that the connections on the controller board and printhead are properly connected. Check the printhead for damage and improper installation. For more information, see “Printhead removal”...

  • Page 49: Print Is Too Light

    4602 Check if the imaging unit contacts (A) are bent, damaged, or not in proper contact with the imaging unit. Make sure that the connections between the controller board and the power supply are properly connected. Check the power supply for damage and improper installation. For more information, see “Power supply removal”...

  • Page 50: Paper Curl

    4602 Check the imaging unit for the following: Damage to the shutter Note: The shutter opens to receive toner from the toner cartridge. Status of the imaging unit From the home screen, touch Status/supplies. Touch View Supplies. Damage, contamination, and improper installation Firmly shake the imaging unit to redistribute the toner, and then reinstall it.

  • Page 51: Folded Or Wrinkled Paper

    4602 Folded or wrinkled paper Note: Before doing this print quality check, see “Initial print quality check” on page Check if the printer is using a genuine and supported Lexmark toner cartridge. Note: If the printer is using a third‑party toner cartridge, then refer the users to their supplier. Check if the toner cartridge is compatible with the imaging unit.

  • Page 52: Repeating Defects

    4602 Check the charge roller contact (B) on the right side of the imaging unit for damage and contamination. Check if the imaging unit contact (C) is contaminated, broken, or bent out of proper position. Check the high voltage metal contacts on the imaging unit for damage. Make sure that the connections between the controller board and the power supply are properly connected.

  • Page 53: Skewed Print

    4602 If the distance between the repeating defects is equal to the listed measurements, then check the imaging unit for damage, contamination, and improper installation. Check if the distance between the repeating defects is equal to 3.15 inches (85 mm). If the distance between the repeating defects is equal to 3.15 inches (85 mm), then check the fuser for damage, contamination, and improper installation.

  • Page 54: Horizontal Light Bands

    4602 Check the fuser for the following: Damage, contamination and improper installation Debris on the rollers and belts Horizontal light bands Note: Before doing this print quality check, see “Initial print quality check” on page Check if the printer is using a genuine and supported Lexmark toner cartridge. Note: If the printer is using a third‑party toner cartridge, then refer the users to their supplier.

  • Page 55: Vertical Dark Bands

    4602 Check if the printer is using a genuine and supported Lexmark toner cartridge. Note: If the printer is using a third‑party toner cartridge, refer the users to their supplier. Check the printhead for the following: Clean the printhead lens. See “Cleaning the printhead mirror”...

  • Page 56: Vertical Dark Streaks With Print Missing

    4602 Vertical dark streaks with print missing Note: Before doing this print quality check, see “Initial print quality check” on page Check if the printer is using a genuine and supported Lexmark toner cartridge. Note: If the printer is using a third‑party toner cartridge, then refer the users to their supplier. Check for any packing material left on the imaging unit, including the red plastic separator (A).

  • Page 57: White Streaks And Voided Areas

    4602 Check if the imaging unit contacts (C) are contaminated or bent out of proper position. Check the imaging unit for damage, contamination, and improper installation. Make sure that the connections between the controller board and the power supply are properly connected.
  • Page 58 4602 Check the shutter tab (A) on the toner cartridge for signs of damage. Check if the imaging unit contacts (B) are contaminated or bent out of proper position. Check the toner cartridge and imaging unit for damage, contamination, and improper installation. Make sure that the connections between the controller board and the power supply are properly connected.

  • Page 59: Fine Lines Such As Chinese Characters Are Not Printed Correctly

    4602 Fine lines such as Chinese characters are not printed correctly Note: Before doing this print quality check, see “Initial print quality check” on page Check if the printer is using a genuine and supported Lexmark toner cartridge. Note: If the printer is using a third‑party toner cartridge, then refer the users to their supplier. From the home screen, do the following: Touch Settings >...

  • Page 60: Compressed Images Appear On Prints

    4602 Check the imaging unit contact block (B) for damage and improper installation. Check the imaging unit for damage, contamination, and improper installation. Compressed images appear on prints Note: Before doing this print quality check, see “Initial print quality check” on page Make sure that the white photoconductor coupler (A) is firmly connected to the imaging unit and does not freely rotate.

  • Page 61: Incorrect Margins On Prints

    4602 Incorrect margins on prints Note: Before doing this print quality check, see “Initial print quality check” on page Make sure that the guides in the tray are in the correct position for the paper loaded. From the home screen, do the following: •...

  • Page 62: Mottled Prints Or Dots

    4602 Mottled prints or dots Note: Before doing this print quality check, see “Initial print quality check” on page Check if the printer is using a genuine and supported Lexmark toner cartridge. Note: If the printer is using a third‑party toner cartridge, then refer the users to their supplier. Check the status of the imaging unit.

  • Page 63: Identifying Jam Locations

    4602 • Do not slide paper into the tray. Load paper as shown in the illustration. • Make sure that the paper guides are positioned correctly and are not pressing tightly against the paper or envelopes. • Push the tray firmly into the printer after loading paper. Use recommended paper •...
  • Page 64 4602 Jam locations Multipurpose feeder Trays Door A Duplex unit Door B Diagnostics and troubleshooting...

  • Page 65: 200 Paper Jams

    4602 200 paper jams 200 paper jam messages Error code Description Action 200.03 Paper fed from the MPF was detected later “Sensor (input): Paper failed to arrive from the than expected or was never detected at the MPF jam service check” on page sensor (input).
  • Page 66 4602 Error code Description Action 200.42 Paper fed from tray 4 was detected earlier than “Sensor (input): Paper arrived too early from expected at the sensor (input). optional tray jam service check” on page 200.43 Paper fed from tray 4 was never detected at “Sensor (input): Paper failed to arrive from the sensor (input).
  • Page 67 4602 Perform a POR. Check if the paper jam error occurs when using other trays. If the paper jam error occurs only when using the MPF, then do the following: Check the MPF pick roller and separator roller for wear, damage, and contamination. Make sure that the MPF solenoid is functional.
  • Page 68 4602 Sensor (input): Paper failed to clear from the MPF jam service check Make sure that paper is supported and loaded properly. See “Avoiding jams” on page Make sure that the paper is free of debris and obstructions. Perform a POR. Check if the paper jam error occurs when using other trays.
  • Page 69 4602 Sensor (input): Paper arrived too early or failed to arrive jam service check Make sure that paper is supported and loaded properly. See “Avoiding jams” on page Make sure that the paper is free of debris and obstructions. Perform a POR. Check if the paper jam error occurs when using other trays.
  • Page 70 4602 Sensor (input): Paper cleared too early jam service check Make sure that paper is supported and loaded properly. See “Avoiding jams” on page Make sure that the paper is free of debris and obstructions. Perform a POR. Check if the paper jam error occurs when using other trays. Check the pick roller for wear, damage, contamination, and improper installation.
  • Page 71 4602 If the paper jam error occurs regardless of the source tray, then do the following: Identify the location of the leading edge of the paper. If the leading edge of the paper did not reach the fuser, then check the imaging unit and transfer roller for damage and improper installation.
  • Page 72 4602 Check the pick roller clutch for damage, contamination, and improper installation. For more information, see “Pick roller clutch removal” on page 174. Sensor (input): Paper failed to arrive from optional tray jam service check Make sure that paper is supported and loaded properly. See “Avoiding jams”...
  • Page 73 4602 Check if the paper jam error occurs when using other trays. If the paper jam error occurs when using optional trays (tray 2 to tray 4), then do the following: Check the pick roller for wear, damage, contamination, and improper installation. Check the separator pad or separator roller for wear, damage, contamination, and improper installation.

  • Page 74: 202 Paper Jams

    4602 If the paper jam error occurs regardless of the source tray, then do the following: Check the input sensor actuator for damage, and improper installation. Make sure that the sensor (duplex and input) is functional. Do the following: Enter the Diagnostics menu, and then touch Printer diagnostics & adjustments > Sensor tests. Find the sensor (duplex and input).
  • Page 75 4602 Error code Description Action 202.91 Paper remains detected at the sensor (fuser exit) “Sensor (fuser exit): Static jam service after the printer is turned on. check” on page 202.93 The sensor (fuser exit) detected a jam during or after a flush action. 202.95 Paper fed from an unknown tray never cleared the sensor (fuser exit).
  • Page 76 4602 Note: The MS531 and MS63x printer models have different pick and tray mechanisms. Choose the appropriate part for each printer model. For more information, see “Pick roller removal” on page 214 “Pick roller (MS531) removal” on page 215. If the paper jam error occurs regardless of the source tray, then do the following: Identify the location of the leading edge of the paper.
  • Page 77 4602 If the paper jam error occurs regardless of the source tray, then do the following: Check the input sensor actuator for damage, and improper installation. Make sure that the sensor (duplex and input) is functional. Do the following: Enter the Diagnostics menu, and then touch Printer diagnostics & adjustments > Sensor tests. Find the sensor (duplex and input).

  • Page 78: 230 Paper Jams

    4602 If the leading edge of the paper reached the fuser, then check the fuser for wear, damage, and improper installation. Fore more information, see “Fuser removal” on page 232. Sensor (fuser exit): Static jam service check Turn off the printer. Check the optional tray for improper installation.
  • Page 79 4602 Error code Description Action 230.35 Paper fed from tray 3 never cleared the sensor “Sensor (redrive): Paper (duplex job) failed (duplex). to clear jam service check” on page 230.43 Paper fed from tray 4 never reached the sensor “Sensor (redrive): Paper (duplex job) failed (duplex).

  • Page 80: Paper Jams

    4602 Check if the paper jam error occurs when using other trays. If the paper jam error occurs regardless of the source tray, then do the following: Check the input sensor actuator for damage, and improper installation. Make sure that the sensor (duplex and input) is functional. Do the following: Enter the Diagnostics menu, and then touch Printer diagnostics &...
  • Page 81 4602 Error code Description Action 232.35 Paper fed from tray 3 never cleared the sensor “Sensor (input): Paper (duplex job) failed to (input) during a duplex print job. clear jam service check” on page 232.43 Paper fed from tray 4 never reached the sensor “Sensor (input): Paper (duplex job) failed to (pass‑through) during a duplex print job.

  • Page 82: 241 Paper Jams

    4602 Check the printed page count. Enter the Diagnostics menu, and then touch Printer Setup. If the page count is near 400K, then replace the duplex. For more information, see “Duplex removal” on page 206. Check the duplex paper path for jammed paper, debris, and obstructions. Check the duplex rollers for debris, wear, damage, contamination, and improper installation.

  • Page 83: 242-244 Paper Jams

    4602 Make sure that the connections between the pick roller clutch and the controller board are properly connected. Check the pick roller clutch for damage, contamination, and improper installation. For more information, see “Pick roller clutch removal” on page 174. Check the pick arm and pick roller for damage and improper installation.
  • Page 84 4602 Error code Description Action 242.70 Motor (tray 2 transport) does not turn on. “Optional tray motors jam service check” on page 242.71 Motor (tray 2 transport) does not turn off. 242.72 Motor (550‑sheet tray 2 transport) speed did not ramp up to expected level.
  • Page 85 4602 243 paper jam messages Error code Description Action 243.36 Paper fed from tray 3 was picked but it never “Optional tray sensors jam service check” arrived at the sensor (tray 2 pass‑through). on page 243.41 Paper fed from tray 4 remains detected at the sensor (tray 3 pass-through) or sensor (tray 3 trailing edge) after the printer is turned on.
  • Page 86 4602 Error code Description Action 243.91 Paper remains detected at the sensor (tray 3 “Optional tray sensors jam service check” pass-through) after the printer is turned on. on page 243.92 Paper fed from an unknown tray was detected earlier than expected at the sensor (tray 3 pass‑through) or sensor (tray 3 trailing edge).
  • Page 87 4602 Error code Description Action 244.91 Paper remains detected at the sensor (tray 4 “Optional tray sensors jam service check” pass-through) or sensor (tray 4 trailing edge) after on page the printer is turned on. Optional tray sensors jam service check Make sure that paper is supported and loaded properly.

  • Page 88: User Attendance Messages

    4602 Do the following: Enter the Diagnostics menu, and then touch Additional input tray diagnostics > Motors tests. Select Pick (tray [x]) and Pass‑through (tray [x]). Make sure that the connections between the motors and the controller board are properly connected. Check the motors for damage, and improper installation.
  • Page 89 4602 Make sure that the sensor (door interlock) is functional, do the following: Enter the Diagnostics menu, and then touch Printer diagnostics and adjustments > Sensor tests. Find the sensor (door interlock). Make sure that the connections between the controller board and sensor (door interlock) are properly connected.

  • Page 90: 1Y User Attendance Errors

    4602 1y user attendance errors 11–12 user attendance messages Error code Description Action 11.11 A wrong paper type or size was detected on tray “Mismatched paper size and paper printer setting error service check” on page 11.12 A wrong paper type, size, or orientation was detected on tray 1.

  • Page 91: 2Y User Attendance Errors

    4602 Error code Description Action 12.11 A wrong setting for paper type or size was “Mismatched paper size and paper printer detected on tray 1. setting error service check” on page 12.12 A wrong setting for paper type, size, or orientation was detected on tray 1.

  • Page 92: 3Y User Attendance Errors

    4602 Removing the packing material from the supplies Make sure to remove all packing materials such as tape, foam, or plastic. Check all areas of the printer for packing materials. Remove all supplies, and then check for any packing material left. 3y user attendance errors 31 user attendance error messages Error code...
  • Page 93 4602 Error code Description Action 31.60 The imaging unit is missing or unresponsive. “Imaging unit (K) error service check” on page 31.60A A black imaging unit smart chip or sensor communication error was detected. 31.60AN 31.60B A black imaging unit smart chip or sensor communication error was detected.
  • Page 94 The black imaging unit is unsupported. 32.60D The black imaging unit is unsupported. 32.60E The black imaging unit is unsupported. 32.60F The black imaging unit is unsupported. 33 user attendance error messages Note: For more information, see “Non‑Sharp supply” on page Diagnostics and troubleshooting...
  • Page 95 4602 Error code Description Action 33.40 An inauthentic black toner cartridge was “Toner cartridge (K) error service check” on detected. page 33.40A An inauthentic black toner cartridge was detected. 33.40AN 33.40BN An inauthentic black toner cartridge was detected. 33.60 An inauthentic black imaging unit was detected. See “Imaging unit (K) error service check”...
  • Page 96 4602 Toner cartridge (K) error service check Check if the printer is using a genuine and supported Lexmark toner cartridge. Note: If the printer is using a third‑party toner cartridge, then refer the users to the supplier. Make sure that the cartridge region matches the printer region. Make sure that the toner cartridge is not damage and not leaking.
  • Page 97 4602 Use a different driver, such as PostScript driver, to handle the print job more efficiently. Some printer drivers may be more efficient at handling large or complex print jobs than others. Upgrade the printer memory by adding additional RAM or installing an ISD. For more information, see “Available internal options”...

  • Page 98: 4Y User Attendance Errors

    4602 4y user attendance errors 41‑42 user attendance messages Error code Description Action 41.60 The imaging unit and toner cartridge are mismatched or incompatible. 41.60A The imaging unit and toner cartridge are mismatched or incompatible—Toner type 41.60AN mismatch. 42.01 The toner cartridge and printer regions are “Mismatched supplies service check”...
  • Page 99 4602 Error code Description Action 42.20 The toner cartridge and printer regions are “Mismatched supplies service check” on mismatched. page 42.21 The toner cartridge and printer regions are mismatched. 42.21K 42.23 The toner cartridge and printer regions are mismatched. 42.23K 42.24 The toner cartridge and printer regions are mismatched.
  • Page 100 4602 Error code Description Action 42.40 The toner cartridge and printer regions are “Mismatched supplies service check” on mismatched. page 42.40K 42.41 The toner cartridge and printer regions are mismatched. 42.41K 42.42 The toner cartridge and printer regions are mismatched. 42.43 The toner cartridge and printer regions are mismatched.
  • Page 101 4602 Error code Description Action 42.90 The toner cartridge and printer regions are “Mismatched supplies service check” on mismatched. page 42.91 The toner cartridge and printer regions are mismatched. 42.92 The toner cartridge and printer regions are mismatched. 42.93 The toner cartridge and printer regions are mismatched.

  • Page 102: 5Y User Attendance Errors

    4602 Make sure that the sensor (toner meter) is functional. Do the following: Enter the Diagnostics menu, and then touch Printer diagnostics and adjustments > Sensor tests. Find the sensor (toner meter). 5y user attendance errors 55–59 user attendance error messages Error code Description Action...

  • Page 103: 7Y User Attendance Errors

    4602 Error code Description Action ‑‑ 66.00 The hard disk needs to be formatted. 7y user attendance errors 71–72 user attendance error messages Error code Description Action 71.01 The fax station name is not set up. 71.02 The fax station number is not set up. 71.03 The analog phone line is not found.

  • Page 104: 8Y User Attendance Errors

    4602 8y user attendance errors 80 user attendance error messages Error code Description Action 80.00 The maintenance kit is nearly low. Touch Continue to clear the message or see “Maintenance kit service check” on page 80.01 The maintenance kit is nearly low. The backup roll or fuser page count threshold has been reached.
  • Page 105 4602 84 user attendance error messages Error code Description Action 84.00 The black imaging unit is nearly low. Touch Continue to clear the message. 84.01 The black imaging unit is nearly low. 84.02 The black imaging unit is nearly low. 84.03 The black imaging unit is nearly low.
  • Page 106 4602 88 user attendance error messages Error code Description Action 88.00 The black toner cartridge is nearly low. Touch Continue to clear the message. 88.01 The black toner cartridge is nearly low. 88.08 The black toner cartridge quanta error has occurred.

  • Page 107: Printer Hardware Errors

    4602 Printer hardware errors 111 errors 111 error messages Error code Description Action 111.20 Printhead error (mirror motor lock) was detected “Printhead error service check” on before the motor was turned on. page 101. 111.21 No printhead power (+5 V) when the laser servo started.

  • Page 108: Errors

    4602 Printhead error service check Perform a POR. Make sure that the connections between the controller board and the printhead are properly connected. Check the printhead for damage, contamination, and improper installation. For more information, see “Printhead removal” on page 238.
  • Page 109 4602 Error code Description Action 121.22 Open fuser relay was detected. “Fuser temperature error service check” on page 102. 121.23 Fuser relay was turned off but the feed back to the engine code indicated that it was still open. 121.24 Fuser did not reach the required temperature during the final EWC/line voltage detection.

  • Page 110: 126 Errors

    4602 Perform a POR. Make sure that the correct voltage is supplied to the fuser from the power supply. For more information, see the Wiring diagram and “Power supply removal” on page 204. Make sure that the connections between the controller board and the fuser are properly connected. Check the fuser for damage, contamination, and improper installation.

  • Page 111: 128 Errors

    4602 Make sure that the printer is plugged into a supported power strip or uninterruptable power supply (UPS). Make sure that voltage output of the electrical outlet matches the voltage rating of the printer. Note: A poor power source may trigger a false fuser error. 128 errors 128 error messages Error code Description...

  • Page 112: 133 Errors

    4602 Check the pick roller cam for damage. Note: The rotation of the pick roller cam triggers the movement of the wiper bracket. Check the sensor (toner density) and its wiper bracket for damage, contamination, and improper installation. For more information, see “Sensor (toner density) and media present sensor flag removal”...

  • Page 113: 155 Errors

    4602 Motor (main) error service check Check if the error occurs only after printing. If yes, then check the imaging unit for damage, contamination, and improper installation. Perform a POR. Make sure that the motor (main) is functional. Do the following: Enter the Diagnostics menu, and then touch Printer diagnostics &...

  • Page 114: 16Y Errors

    4602 Make sure that the motor (main) is functional. Do the following: Enter the Diagnostics menu, and then touch Printer diagnostics & adjustments > Motors tests. Select Transport. Make sure that the connections between the motor (main) and the controller board are properly connected.
  • Page 115 4602 Error code Description Action 163.80 The motor (tray 3 pick) does not turn on. “Optional tray motor error service check” on page 110. 163.81 The motor (tray 3 pick) does not turn off. 163.82 The motor (tray 3 pick) speed did not ramp up to the required level.
  • Page 116 4602 166‑168 error messages Error code Description Action 166.80 The motor (tray 2 transport) does not turn on. “Optional tray motor error service check” on page 110. 166.81 The motor (tray 2 transport) does not turn off. 166.82 The motor (tray 2 transport) speed did not ramp up to the required level.
  • Page 117 4602 Make sure that the connections between the motor (pick/lift) and the controller board are properly connected. Check the pick/lift motor gearbox for damage, contamination, and improper installation. For more information, see “Pick/lift motor gearbox removal” on page 222. Check the pick roller for damage and improper operation. For more information, see “Pick roller removal”...

  • Page 118: 171 Errors

    4602 171 errors 171 error messages Error code Description Action 171.82 The main fan speed did not ramp up to the required level. 171.83 The main fan stalled. 171.84 The main fan ran too slow. 171.85 The main fan ran too fast. 6yy errors 600‑680 error messages Error code Description...
  • Page 119 4602 Error code Description Action 611.02 An Input ISR error occurred and the printhead was “Printhead error service check” on not ready. page 101. 611.32 Lost Hsync errors were detected. Laser safety interlock system may be the cause. 611.33 Lost Hsync errors were detected during servo. 611.34 A mirror motor lock error was detected.
  • Page 120 4602 Error code Description Action 662.23 The tray 2 lift plate failed to lift. “Optional tray pick drive error service check” on page 110. 662.80 Motor (tray 2 pick) does not turn on. 662.81 Motor (tray 2 pick) does not turn off. 662.82 Motor (tray 2 pick) speed did not ramp up to the required level.

  • Page 121: Procedure Before Starting The 9Yy Service Checks

    4602 Error code Description Action 666.86 The motor (tray 2 pass‑through) ran too long. “Optional tray motor error service check” on page 110. 667.80 The motor (tray 3 pass‑through) did not turn on. 667.81 The motor (tray 3 pass‑through) did not turn off. 667.82 The motor (tray 3 pass‑through) speed did not ramp up to the required level.
  • Page 122 4602 A. Collecting the history information from the SE menu Note: Make sure that your printer is connected to a network or to a print server. Open a web browser, type http://printer_IP_address/se, and then press Enter. Notes: printer_IP_address is the TCP/IP address of the printer. •...

  • Page 123: 900-901 Errors

    4602 D. Collecting information from the user Ask the user for information about the following: • Print job being run • Operating system being used • Print driver being used • Other information on what was happening when the 9yy error occurred 900-901 errors 900‑901 error messages Error code Description...

  • Page 124: 912 Errors

    4602 Check the controller board for the following: • Foreign debris (dust, dirt, or any accumulated material) • Circuit board expansion due to heat and humidity • Damaged pins, burnt‑out components, and signs of overheating and bulging • Missing components and solder joint connection issues •...
  • Page 125 4602 Error code Description Action 912.30 An engine error occurred. Resend the print job. If the problem remains, then contact the next level of support. 912.31 An engine error occurred. 912.32 An engine error occurred. 912.33 An engine error occurred. 912.34 An engine error occurred.

  • Page 126: 938-958 Errors

    4602 Error code Description Action 912.69 An engine error occurred. Resend the print job. If the problem remains, then contact the next level of support. 912.70 An engine error occurred. 912.72 An engine error occurred. 912.73 An engine error occurred. 912.74 An engine error occurred.

  • Page 127: 980-992 Errors

    4602 980-992 errors 980‑992 error messages Error code Description Action 980.01 An option communication error has occurred. “Dead optional tray service check” on page 121. 980.02 An option communication error has occurred. 980.03 An option communication error has occurred. 980.04 An option communication error has occurred.

  • Page 128: Dead Optional Tray Service Check

    4602 Dead optional tray service check Check the compatibility of the optional tray. Do the following: Make sure that the optional tray is supported by the printer model. For more information, see “Optional trays” on page 293. Remove the tray insert, and then check if the label is present. If the part number of the optional tray does not start with 36S or the label is not present, then the optional tray is incompatible.
  • Page 129 4602...

  • Page 130: Service Menus

    4602 Service menus Understanding the printer control panel Using the control panel Control panel part Function Power button • Turn on or turn off the printer. Note: To turn off the printer, press and hold the power button for five seconds. •...

  • Page 131: Diagnostics Menu

    4602 Diagnostics menu Entering the Diagnostics Menu The Diagnostics Menu contains tests that are used to help isolate printer issues. • To access the menu from POST, do the following: Unplug the power cord from the electrical outlet. Open tray 1. Connect the power cord to the electrical outlet.

  • Page 132: Reports

    4602 Reports Device Settings This report lists all the current printer settings. Enter the Diagnostics menu, and then navigate to: Reports > Device > Device Settings Installed Licenses This setting lists all the installed licenses and their feature data. Enter the Diagnostics menu, and then navigate to: Reports >...

  • Page 133: Input Tray Quick Print

    4602 Print Log Summary This setting lists a brief summary of the various printer events. Enter the Diagnostics menu, and then navigate to: Event Log > Print Log Summary Touch Print Log Summary. Note: The events that appear in the report vary depending on the operational history of the printer. Mark Log This setting allows you to create a service, maintenance, or custom log entry.
  • Page 134 4602 Permanent page count This setting displays the total number of pages printed in mono and color. After all the print tests are completed, this value resets to zero. Enter the Diagnostics menu, and then touch Printer Setup. View the permanent page count. Enable edge-to-edge (printing) This setting shifts all four margins to the physical edges of the page.

  • Page 135: Printer Diagnostics And Adjustments

    4602 EP setup Warning—Potential Damage: Do not change this setting without specific instructions from the next level of support. This setting allows you to adjust the EP setup of the printer. Enter the Diagnostics menu, and then navigate to: Printer Setup > EP setup Select a setting.
  • Page 136 4602 Notes: • If the motor is activated, then it is properly working. • Some motors require automatic deactivation to avoid secondary issues such as possible damage and contamination. • Some tests require a special action to activate a motor such as removing a major component. •...

  • Page 137: Additional Input Tray Diagnostics

    4602 Additional input tray diagnostics Sensor tests Enter the Diagnostics menu, and then touch Additional input tray diagnostics. Select a sensor. Find, and then manually toggle the sensor. Notes: • The sensor status on the screen toggles between 1 and 0 when the sensor is properly working. •...

  • Page 138: Configuration Menu

    4602 Configuration Menu Menu item Description USB Configuration Change the USB driver mode of the printer to improve its compatibility with a personal computer. USB PnP USB Configuration Set the USB port to run at full speed and disable its high‑speed capabilities.
  • Page 139 4602 Menu item Description Tray Configuration Set the tray to support multiple universal sizes. Multiple Universal Sizes Off* Reports Print reports about printer menu settings, status, and event logs. Menu Settings Page Event Log Event Log Summary Supply Usage And Counters Reset the supply usage history to the factory default level.

  • Page 140: Entering Invalid Engine Mode

    4602 Menu item Description Device Operations Set the printer to operate in Quiet Mode. Quiet Mode Note: Enabling this setting slows down the overall Off* performance of the printer. Device Operations Set the printer to operate in a special mode, in which it attempts to continue offering as much functionality as possible, despite Safe Mode known issues.

  • Page 141: Entering Recovery Mode

    4602 Touch ‑> to navigate the menu that appears on the display, and then select ENGINE_FLASH. Note: The selected menu turns green. Touch Boot. Entering Recovery mode This mode allows the printer to boot from a secondary set of instructions and flash firmware code. Depending on your printer model, do any of the following: For LED display Turn off the printer.

  • Page 142: Service Engineer Menu

    4602 For 2.4-, 4.3-, 7-, and 10-inch displays with number pads Turn off the printer. Press and hold the 2, 7, and 8 buttons. Turn on the printer. When the display shows the following icon, release the buttons. For 2.8‑, 4.3‑, 7‑, and 10‑inch displays without number pads Turn off the printer.

  • Page 143: General Se Menu

    4602 For 2‑line display From the home screen, press the following buttons in this sequence: Back, Left arrow, Back, Left arrow. For 2‑line display with a menu button From the home screen, press the following buttons in this sequence: Right, Right, OK, Left. For 2.8‑, 4.3‑, 7‑, and 10‑inch displays From the home screen, press the following buttons in this sequence: Back, Back, Home, Home.

  • Page 144: Network Se Menu

    4602 Network SE Menu Enter the SE menu, and then select Network SE Menu. Note: Use these settings as directed by the next level of support. Top‑level menu Intermediate menu HISTORY • Print • Mark • Set Card Speed • •...
  • Page 145 4602...

  • Page 146: Parts Removal

    4602 Parts removal Important removal information Removal precautions CAUTION—SHOCK HAZARD: The low-voltage power supply (LVPS) and the high-voltage power supply (HVPS) may have residual voltage present. To avoid the risk of electrical shock, do not touch their circuit components or the solder side of the board. Only handle them by their outer edges or metal housing. CAUTION—SHOCK HAZARD: This product uses an electronic power switch.
  • Page 147 4602 Precauciones durante la extracción PRECAUCIÓN: PELIGRO DE DESCARGAS ELÉCTRICAS: La fuente de alimentación de bajo voltaje (LVPS) y la fuente de alimentación de alto voltaje (HVPS) pueden presentar voltaje residual. Para evitar el riesgo de descarga eléctrica, no toque los componentes del circuito ni el lateral soldado de la placa. Manipule solo los bordes exteriores o la carcasa metálica.

  • Page 148: Handling Esd-Sensitive Parts

    4602 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, do the following: • Turn off the printer before removing logic boards. • Keep the parts in their original packing material until you are ready to install them into the printer. •...

  • Page 149: Restoring The Printer Configuration

    4602 Warning—Potential Damage: To avoid NVRAM mismatch issues, replace only one of the following components at a time: • Engine board • Controller board To replace a component and to test whether the problem is resolved: Replace the affected component. Warning—Potential Damage: Do not perform a Power‑On Reset (POR) until the problem is resolved.
  • Page 150 4602 Enter the printer serial number, and then submit the information. Note: Make sure that the serial number that appears on the verification screen is correct. Save the zip file. Note: Make sure that the serial number in the zip file matches the serial number of the printer being restored.
  • Page 151 4602 Extract the contents of the zip file, open the Readme file, and then follow the instructions in the file. Notes: • Perform the install instructions on the Readme file in the exact order shown. Restart the printer only if the file says so.

  • Page 152: Restoring Solutions, Licenses, And Configuration Settings

    4602 • If a 10.00 error appears after you restart the printer, then contact the next level of support. Restoring solutions, licenses, and configuration settings To load the zip files that are extracted from the Service Restore Tool, do the following: Open a web browser, and then type the printer IP address.

  • Page 153: Updating The Printer Firmware

    4602 Navigate to the folder where the zip files are extracted from the Service Restore Tool. Select the file to import, and then click Import. Repeat step 2 through step 4 for the other files that are included in the extracted zip file. Updating the printer firmware Warning—Potential Damage: Before updating the printer firmware, ask the next level of support for the correct code.

  • Page 154: Backing Up Esf Solutions And Settings

    4602 From the command prompt of a network computer, open an FTP session to the printer IP address. Use a PUT command to place the firmware file on the printer. The printer performs a POR sequence and terminates the FTP session. Using the Embedded Web Server Note: The printer must be in ready state to update the firmware.

  • Page 155: Disconnecting Ribbon Cables

    4602 From the Embedded Solutions page, select the applications that you want to export. Click Export. Note: The size limit of the export file is 128 KB. Importing eSF solutions and settings file After replacing the controller board, import back to the printer the eSF solutions and settings that were exported. Reset the printer into Invalid engine mode.

  • Page 156: Ribbon Cable Connectors

    Warning—Potential Damage: Do not insert the cable diagonally into the ZIF socket. This can cause damage to the contacts on the cable. Warning—Potential Damage: Avoid using a fingernail, or sharp object to open the locking mechanism. This could damage the cable.

  • Page 157: Horizontal Top Contact Connector

    4602 Horizontal top contact connector This FRU contains a horizontal top contact cable connector. Read the instructions before proceeding. The horizontal top contact connector uses a back flip locking actuator to lock the ribbon cable into the Zero Insertion Force (ZIF) connector. The cable is inserted horizontally into the connector. Warning—Potential Damage: When opening or closing this type of actuator, gently lift or close the two tabs located on each end of the actuator.
  • Page 158 4602 Inserting a cable into the horizontal top contact connector When installing the cable, check the locking actuator to ensure it is in the unlocked position. The tabs on the ends of the actuator are vertical when the actuator is unlocked. Insert the cable with the contacts on the cable facing up.
  • Page 159 4602 Rotate the locking actuator to the locked position. The cable should not move while this step is performed. If the cable moves, open the actuator, reposition the cable, and then close the actuator to the down position. Parts removal...

  • Page 160: Horizontal Bottom Contact Connector

    4602 Horizontal bottom contact connector This FRU contains a horizontal bottom contact cable connector. Read the instructions before proceeding. The horizontal bottom contact connector uses a flip locking actuator to lock the ribbon cable into the Zero Insertion Force (ZIF) connector. The cable is inserted horizontally into the connector. Warning—Potential Damage: When opening or closing this type of actuator, gently lift the center of the actuator using your finger.
  • Page 161 4602 Inserting a cable into the horizontal bottom contact connector Check the actuator to verify it is in the open position. Insert the cable into the ZIF connector with the contacts facing downward and away from the locking actuator. The cable needs to be inserted below the actuator. Note: Verify that the cable is installed squarely into the connector.
  • Page 162 4602 Place your finger in the middle of the actuator, and then rotate the locking actuator to the locked position. Parts removal...

  • Page 163: Vertical Mount Contact Connector

    4602 Vertical mount contact connector This FRU contains a vertical mount contact connector. Read the instructions before proceeding. The vertical mount contact connector uses a back flip locking actuator to lock the ribbon cable into the Zero Insertion Force (ZIF) connector. The cable is inserted vertically into the connector. Warning—Potential Damage: When opening or closing this type of actuator, gently lift the center of the actuator using your finger.
  • Page 164 4602 Inserting a cable into the vertical mount contact connector When installing the cable, check the locking actuator to verify it is in the open position. Insert the cable with the contacts on the cable away from the locking actuator. Insert the cable on top of the actuator.
  • Page 165 4602 Rotate the locking actuator to the locked position by pressing down on both ends of the actuator. The cable should not move when this step is performed. If the cable moves, open the actuator, reposition the cable, and then close the actuator to the down position. Parts removal...

  • Page 166: Horizontal Sliding Contact Connector

    4602 Horizontal sliding contact connector This FRU contains a horizontal sliding contact connector. Read the instructions before proceeding. The horizontal sliding contact connector uses a slide locking actuator to lock the ribbon cable into the Zero Insertion Force (ZIF) connector. The cable is inserted horizontally into the connector. Warning—Potential Damage: When opening or closing this type of actuator, gently push or pull the two tabs located on each end of the actuator.
  • Page 167 4602 Inserting a cable into the horizontal sliding contact connector When installing the cable, check the locking actuator to verify it is in the open position. If you are opening the connector, pull back on both end tabs using equal force to avoid breaking the connector. Insert the cable with the contacts on the cable facing away from the locking actuator.
  • Page 168 4602 Slide the locking actuator towards the connector, locking the cable into place. The cable should not move when this step is performed. If the cable moves, open the actuator, reposition the cable, and then close the actuator to the down position. Parts removal...

  • Page 169: Low Insertion Force (Lif) Connector

    4602 Low Insertion Force (LIF) connector This FRU contains a Low Insertion Force (LIF) connector. Read the instructions before proceeding. Warning—Potential Damage: When installing a cable into an LIF connector, care must be taken to avoid bending the edges of the cables and damaging the contacts on the cables. Inserting a cable into the LIF connector Looking at the connector, take note on which side the contacts are located.

  • Page 170: Printhead Adjustment

    Printhead adjustment A printhead must be correctly positioned after it has been removed. Use a sharp pencil or a small, flat-blade screwdriver to mark the location of the old printhead on the printer frame. Align the new printhead relative to the location of the old printhead.
  • Page 171 4602 Make a second vertical fold near the center so that the left side top edge aligns with the right side top edge. If the grid lines of the right flap align below the corresponding lines on the left side, then adjust the printhead clockwise relative to the printer, and recheck.

  • Page 172: Removal Procedures

    4602 Removal procedures Keep the following tips in mind as you replace parts: • Some removal procedures require removing cable ties. You must replace cable ties during reassembly to avoid pinching wires, obstructing the paper path, or restricting mechanical movement. •...

  • Page 173: Main Drive Gearbox Removal

    4602 Main drive gearbox removal Remove the left cover. See “Left cover removal” on page 165. Release the latch (A), and then detach the link. Remove the four screws (B). Disconnect the cable from the main drive gearbox. Remove the gearbox. Warning—Potential Damage: Do not lose the fuser gear (C) and spring (D).

  • Page 174: Mpf Gearbox Removal

    4602 MPF gearbox removal Remove the front door. See “MPF with front access cover removal” on page 192. Remove the left cover. See “Left cover removal” on page 165. Remove the main drive gearbox. See “Main drive gearbox removal” on page 166.
  • Page 175 4602 Remove the three screws (B). Remove the three screws (C). Remove the E-clip (D), and then remove the gear. Note: The solenoid hinders the removal. Parts removal...
  • Page 176 4602 Release the two latches (E), and then remove the gears (F). Parts removal...

  • Page 177: Fuser Actuator Removal

    4602 Fuser actuator removal Remove the left cover. See “Left cover removal” on page 165. Release the latch (A), and then detach the link. Remove the four screws (B). Parts removal...

  • Page 178: Reverse Solenoid Removal

    4602 Remove the screw (C). Remove the fuser actuator. Installation note: To test if the actuator is properly installed, push, and then release the actuator (A). The actuator should bounce back. Reverse solenoid removal Remove the right cover. See “Right cover removal” on page 179.

  • Page 179: Cartridge Gearbox Removal

    4602 Remove the top cover. See “Top cover removal” on page 236. Disconnect the cable JDUPSOL1 from the controller board. Remove the two screws (A). Remove the solenoid. Cartridge gearbox removal Remove the left cover. See “Left cover removal” on page 165.

  • Page 180: Mpf Solenoid Removal

    4602 Remove the screw (B). Lift the top cover enough to remove the cartridge gearbox. While lifting the cover, disconnect the cable from the gearbox, and then remove the gearbox. MPF solenoid removal Remove the left cover. See “Left cover removal” on page 165.

  • Page 181: Pick Roller Clutch Removal

    4602 Remove the rear cover. See “Rear door and cover removal” on page 232. Remove the power supply. See “Power supply removal” on page 204. Remove the duplex. See “Duplex removal” on page 206. Release the cut cable. Note: Pay attention to the cable route. Open the controller board access cover, and then disconnect the cable.
  • Page 182 4602 While blocking the roller, remove the screw (B). Pull out the pick roller clutch, and then cut the cable to remove it. Installation note: Route the cables as shown. Parts removal...

  • Page 183: Duplex Gear Kit Removal

    4602 Duplex gear kit removal Remove the left cover. See “Left cover removal” on page 165. Remove the main drive gearbox. See “Main drive gearbox removal” on page 166. Remove the duplex. See “Duplex removal” on page 206. Parts removal...
  • Page 184 4602 Remove the five screws (A). Pull the left frame to release it from the main frame. Parts removal...
  • Page 185 4602 Remove the duplex drive bushing (B). Parts removal...

  • Page 186: Right Side Removals

    4602 Right side removals Right cover removal Note: For a video demonstration, see Right cover removal. Remove the screw (A). Remove the screw (B). Open the right door, and then remove the screws (C). Note: The number of screws varies depending on the printer model. Parts removal...

  • Page 187: Interconnect Cable Removal

    4602 Place the printer on its left side, and then remove the right cover. Interconnect cable removal Remove the right cover. See “Right cover removal” on page 179. Position the printer on its rear side. Disconnect the cable JOPT1 from the controller board. Remove the two screws (A).
  • Page 188 4602 Detach the right foot (B). Release the two latches (C). Remove the cable. Parts removal...

  • Page 189: Fan Removal

    4602 Fan removal Note: For a video demonstration, see removal. Remove the right cover. See “Right cover removal” on page 179. Disconnect the connector (A) Remove the screws (B). Parts removal...

  • Page 190: Controller Board Removal

    4602 Remove the screws (C). Remove the fan from the housing. Installation note: Pay attention to the correct orientation of the fan. Controller board removal Note: For a video demonstration, see Controller board removal. Remove the right cover. See “Right cover removal” on page 179 Remove the wireless module.

  • Page 191: Engine Board Removal

    4602 If a TPS and ISD card is installed, then remove them (C). Remove the controller board. Installation note: Reinstall the electronic attachments to the new controller board. Engine board removal Note: For a video demonstration, see Engine board removal. Remove the right cover.

  • Page 192: Wireless Module Removal

    4602 Remove the screws (A). Remove the engine board. Wireless module removal Remove the right cover. See “Right cover removal” on page 179. Remove the screw (A). Remove the cover (B). Release the wireless module from the guide, and then remove it. Parts removal...

  • Page 193: Toner Cartridge Smart Chip Contact Removal

    4602 Toner cartridge smart chip contact removal Remove the top cover. See “Top cover removal” on page 236. Remove the right cover. See “Right cover removal” on page 179. Disconnect the cable JBARR1 from the controller board. Remove the screw (A). Remove the two screws (B), and then lower the right cartridge guide.
  • Page 194 4602 Release the four latches (E). Remove the toner cartridge smart chip contact. Note: Pay attention to the original position of the spring (F), actuator (G), and lock (H). Parts removal...
  • Page 195 4602 Installation notes: • To test if the spring and actuator are properly installed, press the actuator (A). The lock (B) should move up. Parts removal...

  • Page 196: Cartridge Barrel Shutter Sensor Kit Removal

    4602 • Make sure that the tab (C) at the back of the cartridge guide is properly installed as shown. Cartridge barrel shutter sensor kit removal Remove the top cover. See “Top cover removal” on page 236. Remove the right cover. See “Right cover removal”...
  • Page 197 4602 Installation notes: Install the sensor (cartridge barrel shutter) actuator (A) as shown. Note: Make sure that the spring (B) is behind the boss (C). Parts removal...
  • Page 198 4602 Install the bracket (D) to the sensor (E) as shown. Install the sensor and bracket as shown. Note: Make sure that sensor is aligned with the actuator. Parts removal...

  • Page 199: Front Removals

    4602 Front removals Front cover removal Open the front door, and then remove the screws (A). Remove the cover (B). Remove the screws (C). Remove the front cover. MPF with front access cover removal Remove the nameplate. See “Front cover removal” on page 192.

  • Page 200: Control Panel Removal

    4602 Release the latch (A), and then detach the link. On the controller board, disconnect the control panel cable and remove the ground screw. Push the MPF with front access cover to the right, and then remove it. Control panel removal Note: For a video demonstration, see Control panel removal Control panel cable...
  • Page 201 4602 Remove the screws (C). Remove the control panel. Parts removal...

  • Page 202: Transfer Roller Removal

    4602 Transfer roller removal For a video demonstration, see Transfer roller removal. Open the front door. Release the two latches (A) on each end of the transfer roller. Remove the roller. Note: For a video demonstration, see Transfer roller removal at infoserve.lexmark.com/ids/sma.

  • Page 203: Sensor (Front Door) Removal

    4602 Remove the cover. Sensor (front door) removal Remove the nameplate. See “Front cover removal” on page 192. Remove the right cover. See “Right cover removal” on page 179. Disconnect the JCVR1 and control panel cables from the controller board. Parts removal...
  • Page 204 4602 Remove the four screws (A). Parts removal...

  • Page 205: Mpf Pick Roller And Separator Pad Removal

    4602 Using a #1 Phillips screwdriver, remove the screw (B). Remove the sensor. MPF pick roller and separator pad removal For a video demonstration, see MPF pick roller and separator pad removal. Open the front door. Press the latches (A), and then open the cover. Warning—Potential Damage: Avoid damaging the MPF sensor flag (B) when removing the cover.
  • Page 206 4602 Hold the end of the shaft (D), and then pull out the roller to remove it. Remove the two E‑clips (A). Move the roller (B) to the left, and then remove the pin (C). Parts removal...
  • Page 207 4602 Move the hub (D) and roller (E) to the right. Push the separator pad (F) to the right. Push down the pad to remove it. Warning—Potential Damage: Do not lose the spring (G). Parts removal...

  • Page 208: Sensor (Mpf Paper Present) Removal

    4602 Note: For a video demonstration, see MPF pick roller and separator pad removal infoserve.lexmark.com/ids/sma. Sensor (MPF paper present) removal Open the front door. Remove the screw (A). Open the controller board access cover, disconnect the cable JMPFPP1, and then release the cable. Remove the sensor.

  • Page 209: Front Input Guide Removal

    4602 Front input guide removal Remove the MPF with front access cover. See “MPF with front access cover removal” on page 192. Remove the MPF pick roller and separator pad. See “MPF pick roller and separator pad removal” on page 198.

  • Page 210: Usb Cable Removal

    4602 Release the two latches (A), and then pry to remove the sensor. Unroute and disconnect the cables. USB cable removal Remove the front cover. See “Front cover removal” on page 192. Remove the screws (A). Unroute the cable, and then remove it. Parts removal...

  • Page 211: Bottom Removals

    4602 Bottom removals Power supply removal Remove the rear cover. See “Rear door and cover removal” on page 232. Disconnect the cable (A), and then remove the screws (B). Parts removal...
  • Page 212 4602 Disconnect the cable (C) under the printer, and then remove the two screws (D). Parts removal...

  • Page 213: Duplex Removal

    4602 Disconnect the three cables (E). Remove the power supply. Duplex removal Remove the rear cover. See “Rear door and cover removal” on page 232. Remove the power supply. See “Power supply removal” on page 204. Position the printer on its right side. Parts removal...
  • Page 214 4602 Remove the two screws (A) and the screw (B) on the left side of the printer. Remove the power supply shield. Remove the four screws (C). Remove the duplex. Note: Make sure that the duplex link (D) stays attached to the duplex. Parts removal...

  • Page 215: Sensors (Duplex And Input) Removal

    4602 Sensors (duplex and input) removal Remove the rear cover. See “Rear door and cover removal” on page 232. Remove the power supply. See “Power supply removal” on page 204. Remove the duplex. See “Duplex removal” on page 206. Remove the two screws (A) Disconnect the connector (B).
  • Page 216 4602 Cut the cable near the frame, and then remove the sensors. Open the controller board access cover, and then disconnect the cable JDUPPI1. Remove the cables. Installation note: Route the sensor (input) cable (A) and sensor (duplex) cable (B) as shown. Parts removal...
  • Page 217 4602 Parts removal...
  • Page 218 4602 Parts removal...
  • Page 219 4602 Release the three latches (B). Parts removal...
  • Page 220 4602 Parts removal...

  • Page 221: Pick Roller Removal

    4602 Pick roller removal Note: This procedure is not applicable for MS531 models. Remove the left cover. See “Left cover removal” on page 165. Remove the right cover. See “Right cover removal” on page 179. Remove the rear cover. See “Rear door and cover removal”...

  • Page 222: Pick Roller (Ms531) Removal

    4602 Pick roller (MS531) removal Remove the left cover. See “Left cover removal” on page 165. Remove the main drive gearbox. See “Main drive gearbox removal” on page 166. Remove the rear cover. See “Rear door and cover removal” on page 232.
  • Page 223 4602 Using needle‑nose pliers, block the roller (A) to prevent it from rotating. While blocking the roller, remove the screw (B). Release the pick roller clutch cable. Pull out the clutch, and then leave it hanging. Parts removal...
  • Page 224 4602 Pry, rotate, and then remove the bushing (C). Remove the two screws (D), and then detach the sensors. Parts removal...
  • Page 225 4602 Disconnect the two springs (E). Parts removal...

  • Page 226: Pick Tire (Ms531) Removal

    4602 Pry, rotate, and then remove the bushing (F). Pull out the shaft, and then remove the pick roller. Pick tire (MS531) removal Remove the tray insert. Place the printer on its rear side. Parts removal...
  • Page 227 4602 Remove the pick tires. Parts removal...

  • Page 228: Motor (Pick) Removal

    4602 Motor (pick) removal Note: This procedure is not applicable for MS531 models. Remove the left cover. See “Left cover removal” on page 165. Remove the right cover. See “Right cover removal” on page 179. Remove the rear cover. See “Rear door and cover removal”...

  • Page 229: Pick/Lift Motor Gearbox Removal

    4602 Remove the duplex. See “Duplex removal” on page 206. Remove the pick roller. See “Pick roller removal” on page 214. Remove the three screws (A). Disconnect the cable (pick motor) from the motor. Remove the motor. Pick/lift motor gearbox removal Note: This procedure is not applicable for MS531 models.
  • Page 230 4602 Detach the spring (B). Lift the pick roller. Disconnect the cable from the gearbox. Remove the gearbox. Parts removal...

  • Page 231: Sensor (Toner Density) And Media Present Sensor Flag Removal

    4602 Sensor (toner density) and media present sensor flag removal Notes: • For a video demonstration, see Sensor (toner density) and media present sensor flag removal. • The media present flag is not supported in MS531 models. If the printer is a MS531 model, then skip to the toner density removal procedures.
  • Page 232 4602 Disconnect the connector (D). Remove the screw (E). Parts removal...
  • Page 233 4602 Lift the pick roller and then remove the sensor flag and bracket (F). Installation note: Refer to the following procedures when installing the toner density sensor and media present sensor flag: Pull down the actuator, and then place the wiper (G) in position. Parts removal...
  • Page 234 4602 Attach the sensor bracket (H) and the spring (I). Connect the connector (J) to the sensor, and then route the cable on the harness (K). Note: Before securing the sensor bracket using screws, do the following: Lift the actuator. If the wiper goes along with the actuator, then the sensor bracket is properly engaged with the wiper.
  • Page 235 4602 Apply RheoGel 793 to the top and bottom of the shutter blade extension. Apply RheoGel 793 to the point of contact between the bracket (A) and cam. Apply RheoGel 793 to the point of contact to the lower edge (B) where the wiper bracket glides. Parts removal...
  • Page 236 4602 Lift the pick roller, and then place the bracket (M) in position. Secure the bracket in place using screws (N). Parts removal...

  • Page 237: Lift Cam Removal

    4602 Install the sensor flag (O) into the bracket. Note: To check if the sensor flag is properly installed, do the following: Lift the pick roller. If the sensor flag goes along with the pick roller when lifted, then the sensor flag is properly installed. Lift cam removal Note: This procedure is not applicable for MS531 models.
  • Page 238 4602 Release the two springs (B). Remove the cam. Parts removal...

  • Page 239: Rear Side Removals

    4602 Rear side removals Rear door and cover removal Open the rear door. Remove the two screws (A). Remove the rear door and cover. Fuser removal Note: For a video demonstration, see Fuser removal. Remove the rear cover. See “Rear door and cover removal” on page 232.

  • Page 240: Redrive Removal

    4602 Disconnect the two cables (A), and then remove the two screws (B). Remove the fuser. Installation note: Open the front door before installing the fuser. To check if the fuser is properly installed, open and close the front door and check if the fuser shutter moves to the left and right. Redrive removal Remove the right cover.

  • Page 241: Redrive Gear Plate Removal

    4602 Remove the four screws (A) and the cable (B). Remove the redrive. Redrive gear plate removal Remove the top cover. See “Top cover removal” on page 236. Remove the left cover. See “Left cover removal” on page 165. Remove the redrive. See “Redrive removal”...

  • Page 242: Sensor (Bin Full) Removal

    4602 Remove the two screws (B). Remove the redrive gear plate. Sensor (bin full) removal Remove the right cover. See “Right cover removal” on page 179. Remove the left cover. See “Left cover removal” on page 165. Parts removal...

  • Page 243: Top Side Removals

    4602 Remove the rear cover. See “Rear door and cover removal” on page 232. Remove the top cover. See “Top cover removal” on page 236. Remove the redrive. See “Redrive removal” on page 233. Remove the two screws (A), and then remove the plate. Remove the sensor.

  • Page 244: Top Front Cover Removal

    4602 Remove the two screws (A). Pull, and then lift the top cover to remove it. Top front cover removal Remove the front cover. See “Front cover removal” on page 192. Remove the screws (A). Remove the control panel. See “Control panel removal”...

  • Page 245: Printhead Removal

    Remove the top cover. See “Top cover removal” on page 236. Using a small, flat-blade screwdriver or a sharp pencil, mark the location of the printhead on the printer frame. Disconnect the printhead cable from the controller board. Parts removal...
  • Page 246 4602 Remove the three screws (A). Remove the printhead. Parts removal...

  • Page 247: Optional 250/550-Sheet Tray Removals

    4602 Optional 250/550-sheet tray removals Separator roller removal Remove the tray insert. Under the tray, remove the screw (A). Parts removal...
  • Page 248 4602 Remove the screw (B) on the left side. Do the same for the screw (C) on the opposite side. Remove the roller. Parts removal...

  • Page 249: Replacing Parts And Supplies

    4602 Replacing parts and supplies Replacing the toner cartridge Open door A. Remove the used toner cartridge. Unpack the new toner cartridge. Parts removal...

  • Page 250: Replacing The Imaging Unit

    4602 Shake the toner cartridge to redistribute the toner. Insert the new toner cartridge. Close door A. Replacing the imaging unit Open door A. Parts removal...
  • Page 251 4602 Remove the toner cartridge. Remove the used imaging unit. Unpack the new imaging unit. Shake the imaging unit to redistribute the toner. Warning—Potential Damage: Do not expose the imaging unit to direct light for more than 10 minutes. Extended exposure to light may cause print quality problems. Warning—Potential Damage: Do not touch the photoconductor drum.
  • Page 252 4602 Insert the new imaging unit. Parts removal...

  • Page 253: Replacing Marknet N8450 Wireless Print Server

    4602 Insert the toner cartridge. Close door A. Replacing MarkNet N8450 Wireless Print Server CAUTION—SHOCK HAZARD: To avoid the risk of electrical shock, if you are accessing the controller board or installing optional hardware or memory devices sometime after setting up the printer, then turn the printer off, and unplug the power cord from the electrical outlet before continuing.
  • Page 254 4602 Remove the wireless print server cover. Parts removal...
  • Page 255 4602 Remove the used wireless print server. Unpack the new wireless print server. Insert the new wireless print server until it clicks into place. Parts removal...
  • Page 256 4602 Attach the wireless print server cover, and then install the screw. Close the controller board access cover, and then install the screw. Parts removal...

  • Page 257: Replacing The Pick Tires

    4602 Connect the power cord to the printer, and then to the electrical outlet. CAUTION—POTENTIAL INJURY: To avoid the risk of fire or electrical shock, connect the power cord to an appropriately rated and properly grounded electrical outlet that is near the product and easily accessible.
  • Page 258 4602 Remove the used pick tires. Unpack the new pick tires. Insert the new pick tires. Parts removal...

  • Page 259: Resetting The Supply Usage Counters

    4602 Insert the tray. Connect the power cord to the printer, and then to the electrical outlet. CAUTION—POTENTIAL INJURY: To avoid the risk of fire or electrical shock, connect the power cord to an appropriately rated and properly grounded electrical outlet that is near the product and easily accessible.

  • Page 260: Component Locations

    4602 Component locations Printer configurations Standard bin Control panel Multipurpose feeder Standard 250- or 550-sheet tray Optional 250- or 550-sheet tray Component locations...

  • Page 261: Printer Roller Locations

    4602 Printer roller locations Photoconductor drum Developer roller First input roller MPF pick roller Second input roller Pick roller Separator roller Transfer roller Fuser roller Fuser exit roller Paper exit roller Component locations...

  • Page 262: Printer Sensor Locations

    4602 Paper exit roller Duplex rear roller Duplex front roller Second input roller Printer sensor locations Component locations...
  • Page 263 4602 Sensor Parts removal Sensor (input) “Sensors (duplex and input) removal” on page 208 Sensor (MPF paper present) “Sensor (MPF paper present) removal” on page 201 Sensor (duplex) “Sensors (duplex and input) removal” on page 208 ‑‑ Sensor (media present) ‑‑...

  • Page 264: Maintenance

    4602 Maintenance Inspection guide The purpose of this inspection guide is to aid you in identifying the intervals, based on page count, at which parts must be inspected (for visible physical damage), cleaned, or replaced. If any unsafe conditions exist, find out how serious the hazard could be and if you can continue before you correct the hazard.
  • Page 265 4602 Part number and kit Contents Maintenance interval MX-B46KA1—Maintenance Kit • 200K Fuser (110 V) (110 V) • MPF pick roller and separator pad • Pick tires • Transfer roller MX-B46KA—Maintenance Kit • 200K Fuser (220 V) (220 V) • MPF pick roller and separator pad •...

  • Page 266: Resetting The Maintenance Counter

    4602 Resetting the maintenance counter Always reset the maintenance counter after installing the maintenance kit. POR into the Configuration menu, and navigate to Reset Maintenance Counter. Depending on the printer model, press OK or touch to reset the counter, or press X to exit without resetting the counter.

  • Page 267: Cleaning The Touch Screen

    4602 Cleaning the touch screen CAUTION—SHOCK HAZARD: To avoid the risk of electric shock when cleaning the exterior of the printer, unplug the power cord from the electrical outlet and disconnect all cables from the printer before proceeding. CAUTION—SHOCK HAZARD: Para evitar el riesgo de descarga eléctrica al limpiar el exterior de la impresora, desconecte el cable de alimentación de la toma eléctrica y desconecte todos los cables de la impresora antes de realizar la operación.

  • Page 268: Loading Trays

    4602 Reinstall the imaging unit and toner cartridge. Close the front door. Loading trays Remove the tray. Note: To avoid paper jams, do not remove the tray while the printer is busy. Adjust the guides to match the size of the paper that you are loading. Flex, fan, and align the paper edges before loading.
  • Page 269 4602 Notes: • Load letterhead facedown with the header toward the front of the tray for one‑sided printing. • Load letterhead faceup with the header toward the back of the tray for two‑sided printing. • Do not slide paper into the tray. •...

  • Page 270: Loading The Multipurpose Feeder

    4602 Loading the multipurpose feeder Open the multipurpose feeder. Flex, fan, and align the paper edges before loading. Load paper with the printable side faceup. Notes: • Load letterhead faceup with the header toward the rear of the printer for one‑sided printing. •...
  • Page 271 4602 Adjust the guide to match the size of the paper that you are loading. From the control panel, set the paper size and paper type to match the paper loaded. Maintenance...
  • Page 272 4602...

  • Page 273: Parts Catalog

    4602 Parts catalog Legend The following column headings are used in the parts catalog: • Asm‑index—Identifies the item in the illustration. • Part number—Identifies the unique number that correlates with the part. • Units/mach—Refers to the number of units actually used in the base machine or product. •...

  • Page 274: Assembly 1: Covers

    4602 Assembly 1: Covers Parts catalog...
  • Page 275 4602 Assembly 1: Covers Asm-index Units/mach Units/FRU Description Removal procedure 41X1171 Top cover “Top cover removal” on page 236 41X2262 Output extender 41X1169 Rear door and cover “Rear door and cover removal” on page 232 41X2263 Rear door “Rear door and cover removal” on page 232 40X8520 Dust cover...

  • Page 276: Assembly 2

    4602 Assembly 2: Parts catalog...
  • Page 277 4602 Assembly 2: Asm-index Units/mach Units/FRU Description Removal procedure Parts catalog...

  • Page 278: Assembly 3: Control Panel

    4602 Assembly 3: Control panel Parts catalog...
  • Page 279 4602 Assembly 3: Control panel Asm-index Units/mach Units/FRU Description Removal procedure 41X4359 Control panel display for MS531, “Control panel removal” on MS631, and MS639 page 193 41X4421 Bezel (blank) 41X4412 Control panel front cover for “Top front cover removal” on MS531, MS631, and MS639 page 237 41X4547...

  • Page 280: Assembly 4: Electronics

    4602 Assembly 4: Electronics Parts catalog...
  • Page 281 4602 Assembly 4: Electronics Asm-index Units/mach Units/FRU Description Removal procedure 41X1185 Printhead “Printhead removal” on page 238 41X1178 Fuser, 110 V “Fuser removal” on page 232 41X1179 Fuser, 220 V “Fuser removal” on page 232 41X4154 Engine board “Engine board removal” on page 41X4151 Controller board for “Controller board removal”...

  • Page 282: Assembly 5: Motors

    4602 Assembly 5: Motors Parts catalog...
  • Page 283 4602 Assembly 5: Motors Asm-index Units/mach Units/FRU Description Removal procedure 41X2259 Cooling fan “Fan removal” on page 182 41X1213 MPF solenoid “MPF solenoid removal” on page 173 41X1224 Main drive gearbox “Main drive gearbox removal” on page 41X1237 Cartridge gearbox “Cartridge gearbox removal”...

  • Page 284: Assembly 6: Sensors 1

    4602 Assembly 6: Sensors 1 Parts catalog...
  • Page 285 4602 Assembly 6: Sensors 1 Asm-index Units/mach Units/FRU Description Removal procedure 41X1988 Sensor (cartridge “Cartridge barrel shutter sensor kit barrel) removal” on page 189 41X1162 Toner cartridge smart “Toner cartridge smart chip contact chip contact removal” on page 186 41X1209 Sensor (front door) “Sensor (front door) removal”...

  • Page 286: Assembly 7: Sensors 2

    4602 Assembly 7: Sensors 2 Parts catalog...
  • Page 287 4602 Assembly 7: Sensors 2 Asm-index Units/mach Units/FRU Description Removal procedure 41X4548 Sensor (duplex and input) “Sensors (duplex and input) removal” on page 208 41X4453 Paper present sensor flag “Sensor (toner density) and media parts kit present sensor flag removal” on page 224 •...

  • Page 288: Assembly 8: Paper Feed

    4602 Assembly 8: Paper feed Parts catalog...
  • Page 289 4602 Assembly 8: Paper feed Asm-index Units/mach Units/FRU Description Removal procedure 41X1183 Jam access cover “Jam access cover removal” on page 195 41X1184 Front input guide “Front input guide removal” on page 202 41X1176 Duplex unit “Duplex removal” on page 206 41X4214 Duplex gear kit “Redrive gear plate removal”...

  • Page 290: Assembly 9: Paper Pick

    4602 Assembly 9: Paper pick Parts catalog...
  • Page 291 4602 Assembly 9: Paper pick Asm-index Units/opt Units/FRU Description Removal procedure 41X1223 Pick roller “Pick roller (MS531) removal” on page 215 41X0918 Pick tire “Pick tire (MS531) removal” on page 219 41X2391 Pick roller clutch “Pick roller clutch removal” on page 174 Parts catalog...

  • Page 292: Assembly 10

    4602 Assembly 10: Parts catalog...
  • Page 293 4602 Assembly 10: Asm-index Units/opt Units/FRU Description Removal procedure Parts catalog...

  • Page 294: Assembly 11: Rollers

    4602 Assembly 11: Rollers Parts catalog...
  • Page 295 4602 Assembly 11: Rollers Asm-index Units/mach Units/FRU Description Removal procedure 41X4425 Redrive for MS531 “Redrive removal” on page 233 40X8393 Transfer roller “Transfer roller removal” on page 195 41X1197 MPF pick roller and “MPF pick roller and separator pad separator pad removal”...

  • Page 296: Assembly 12: Mpf And Standard Tray

    4602 Assembly 12: MPF and standard tray Parts catalog...
  • Page 297 4602 Assembly 12: MPF and standard tray Asm-index Units/mach Units/FRU Description Removal procedure 41X1218 MPF with front cover for MS531 “MPF with front access cover removal” on page 192 41X1220 Standard 250-sheet tray insert for MS531 Parts catalog...

  • Page 298: Assembly 13

    4602 Assembly 13: Parts catalog...
  • Page 299 4602 Assembly 13: Asm-index Units/mach Units/FRU Description Removal procedure Parts catalog...

  • Page 300: Assembly 14: Optional Trays

    4602 Assembly 14: Optional trays Parts catalog...
  • Page 301 4602 Assembly 14: Optional trays Asm-index Units/opt Units/FRU Description Removal procedure 41X1239 Pick roller 41X1222 550-sheet tray insert (optional tray) -- 41X1221 250-sheet tray insert (optional tray) -- Parts catalog...

  • Page 302: Assembly 15: Printer Stand

    4602 Assembly 15: Printer stand Parts catalog...
  • Page 303 4602 Assembly 15: Printer stand Asm-index Units/opt Units/FRU Description Removal procedure 41X0775 Nonlocking caster 41X0774 Locking caster Parts catalog...

  • Page 304: Assembly 16: Assembly

    4602 Assembly 16: Asm-index Units/mach Units/FRU Description Removal procedure Parts catalog...
  • Page 305 4602 Parts catalog...
  • Page 306 4602 Assembly 17: Asm-index Units/mach Units/FRU Description Removal procedure Parts catalog...
  • Page 307 4602...

  • Page 308: Printer Specifications

    4602 Printer specifications Power consumption Product power consumption The following table documents the power consumption characteristics of the product. Note: Some modes may not apply to your product. Mode Description Power consumption (Watts) Printing The product is generating hard‑copy output from electronic One-sided: 644 inputs.

  • Page 309: Hibernate Mode

    4602 Hibernate Mode This product is designed with an ultra‑low power operating mode called Hibernate mode. When operating in Hibernate Mode, all other systems and devices are powered down safely. The Hibernate mode can be entered in any of the following methods: •...

  • Page 310: Noise Emission Levels

    4602 Ambient temperature 10 to 32.2°C (50 to 90°F) Storage temperature 15.6 to 32.2°C (60 to 90°F) • Allow the following recommended amount of space around the printer for proper ventilation: 305 mm (12 in.) Rear 100 mm (3.94 in.) Right side 76.2 mm (3 in.) Front 305 mm (12 in.)

  • Page 311: Temperature Information

    4602 Temperature information Ambient operating temperature 10 to 32.2°C (50 to 90°F) Shipping temperature -40 to 40°C (-40 to 104°F) Storage temperature and relative humidity -40 to 40°C (-40 to 104°F) 8 to 80% RH Printer specifications...

  • Page 312: Options And Features

    4602 Options and features Available internal options • Intelligent storage drive (ISD) – Fonts • Simplified Chinese • Traditional Chinese • Japanese • Korean • Arabic – Mass storage • Hard disk • Licensed features – IPDS – Bar Code Notes: •...
  • Page 313 4602 CAUTION—TIPPING HAZARD: pour installer une ou plusieurs options sur votre imprimante ou votre MFP, vous aurez peut-être besoin d'un support à roulettes, d'un meuble ou d'un autre système prévu pour stabiliser la machine et éviter les blessures. Pour plus d'informations sur les configurations possibles, consultez le site www.lexmark.com/multifunctionprinters.

  • Page 314: Adding Available Options In The Print Driver

    4602 Adding available options in the print driver For Windows users Open the printers folder. Select the printer you want to update, and then do either of the following: • For Windows 7 or later, select Printer properties. • For earlier versions, select Properties. Navigate to the Configuration tab, and then select Update Now ‑...
  • Page 315 4602...

  • Page 316: Theory Of Operation

    4602 Theory of operation POR sequence As the printer is turned on, the engine code goes through a series of tests to verify hardware integrity. If a hardware failure is detected, then it is reported to the printer. If the POR sequence cannot be completed successfully, then the printer may post an error message.

  • Page 317: Flowchart

    4602 Flowchart EXPOSE DEVELOP IMAGING UNIT CHARGE TRANSFER CLEAN PAPER FUSE EP process Charge Theory of operation...
  • Page 318 4602 Charge roller Photoconductor drum The charge roller applies a uniform negative electrical charge to the surface of the photoconductor drum. The photoconductor drum, because of its photoconductive properties, holds the charge as long as it is not exposed to light. Service tips •...
  • Page 319 4602 Service tips • Do not touch the surface of the photoconductor drum with your bare hand. The oil from your skin may cause a charge disparity on the surface, and the toner may no longer stick properly. The result can be repeating blotches or voids on the printed page or patches of light print.
  • Page 320 4602 Service tips • Do not touch the surface of the developer roller with your bare hand. The oil from your skin may cause a charge disparity on the surface, and the toner may no longer stick properly. The result can be repeating blotches or voids on the printed page or patches of light print.
  • Page 321 • Sharp and hard objects can damage the transfer roller surface. Be careful when using a screwdriver or prying tool near the transfer roller. If the transfer roller has tears or cracks, then the transfer roller may need to be replaced.
  • Page 322 4602 Fuse Fuser Paper Even if the toner image is already on the paper, the toner particles are not yet permanently bonded to the surface. Paper is transported from the transfer roller to the fuser where heat and pressure are applied to it. As a result, the toner particles melt and permanently fuse with the paper, completing the print process.

  • Page 323: Printer Operation

    4602 Printer operation Printer sections Printhead Imaging unit Toner cartridge Standard tray Optional tray Fuser Theory of operation...

  • Page 324: Printer Paper Path

    4602 Printer paper path One‑sided print job Photoconductor drum Developer roller First input roller MPF pick roller Second input roller Pick roller Separator roller Transfer roller Fuser roller Fuser exit roller Paper exit roller The pick roller picks and feeds the paper to the separator roller. The separator roller feeds the paper to the second input roller, which feeds it to the first input roller.
  • Page 325 4602 After printing, the printer ejects the paper by the paper exit roller. Two‑sided print job Paper exit roller Duplex rear roller Duplex front roller Second input roller After the first side is printed, the paper reverses direction to get its opposite page printed. The paper travels along the duplex path until it reenters the second input roller.

  • Page 326: Printer Paper Path Sensors

    4602 Printer paper path sensors Sensor Function Sensor (input) Detects the paper traveling between the first input roller and the transfer roller Sensor (MPF paper present) Detects paper presence in the MPF tray Sensor (duplex) Detects the paper traveling along the duplex path Sensor (media present) Detects if paper is in the tray Note: The sensor in the standard tray is supported only in some printer...
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  • Page 328 4602 Descriptions in page 321 to 336 are not applicable to this model. Therefore it was deleted.
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  • Page 344 MX-B468P WIRING DIAGRAM MOTOR (CARTRIDGE) PRINTHEAD SENSOR JGSM1 (COVER OPEN) MOTOR (ACM) SOLENOID SOLENOID MOTOR (DUPLEX REVERSE) (DUPLEX REVERSE) (CARTRIDGE) CONTROL PANEL SOLENOID JRIP1 JAUGER1 JPHONE1 (MPF) IMAGING UNIT SENSOR SMART CHIP CONTACT (BIN FULL) SENSOR CONTROLLER BOARD WIRELESS MODULE...
  • Page 345 © COPYRIGHT XXXX BY SHARP CORPORATION If the soldering iron tip is discolored black during soldering work, clean and file the tip with steel wool or a fine filer. ALL RIGHTS RESERVED. No part of this publication may be reproduced,...
  • Page 346 CAUTION FOR BATTERY REPLACEMENT (Danish) ADVARSEL ! Lithiumbatteri – Eksplosionsfare ved fejlagtig håndtering. Udskiftning må kun ske med batteri af samme fabrikat og type. Levér det brugte batteri tilbage til leverandoren. (English) Caution ! Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the manufacturer.
  • Page 347 Adobe in the U.S.A. and/or other countries. PCL is a registered trademark of the Hewlett-Packard Company. Sharpdesk is a trademark of Sharp Corporation. Sharp OSA is a trademark of Sharp Corporation. All other trademarks and copyrights are the property of their respective owners. SHARP CORPORATION...

Table of Contents