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Xerox Phaser 8400 Service Manual

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  • Page 3 Service Manual 701P27910 Phaser 8400/8500/8550/8560 ® Color Printer Warning The following servicing instructions are for use by qualified service personnel only. To avoid personal injury, do not perform any servicing other than that contained in the operating instructions, unless you are qualified to do so.
  • Page 4 Xerox technical training materials and service manuals are intended for use by authorized Xerox service technicians and service partners only and are not for resale. These materials may not be distributed, copied or otherwise reproduced without prior written consent from Xerox Corporation.

  • Page 5: Service Terms

    Caution: A personal injury hazard exists that may not be apparent. For example, a panel may cover the hazardous area. Danger: A personal injury hazard exists in the area where you see the sign. Phaser 8400/8500/8550/8560 Color Printer Service Manual...

  • Page 6: Symbols Marked On The Product

    ■ if the printer is dropped or damaged, ■ if you suspect that the product needs servicing or repair, ■ whenever you clean the product. Phaser 8400/8500/8550/8560 Color Printer Service Manual...
  • Page 7 ■ Handle IC’s and EPROM’s carefully to avoid bending pins. ■ Pay attention to the direction of parts when mounting or inserting them on Printed Circuit Boards (PCB’s). Phaser 8400/8500/8550/8560 Color Printer Service Manual...

  • Page 8: General Guidelines

    If you must service the printer with power applied, be aware of the potential for electrical shock. Warning Do not touch any electrical component unless you are instructed to do so by a service procedure. S7300-02 Phaser 8400/8500/8550/8560 Color Printer Service Manual...

  • Page 9: Servicing Mechanical Components

    This printer uses heat to fuse the image to media. Several components are heated during operation. Turn the printer power off and wait at least 10 minutes for these components to cool before you attempt to service the Fuser or adjacent components. Phaser 8400/8500/8550/8560 Color Printer Service Manual...

  • Page 10: Regulatory Specifications

    United States (FCC Regulations) The Phaser 8400/8500/8550/8560 complies with the limits for a Class B digital device pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.

  • Page 11: European Union

    European Union The CE mark applied to this product symbolizes Xerox’s declaration of conformity with the following applicable Directives of the European Union as of the dates indicated: ■ January 1, 1995: Low Voltage Directive 73/23/EEC as amended by 93/68/EEC ■...

  • Page 12: Manual Organization

    Manual Organization The Phaser 8400/8500/8550/8560 Color Printer Service Manual is the primary document used for repairing, maintaining, and troubleshooting the printer. Use this manual as your primary resource for understanding the operational characteristics of the printer and all available options. This manual describes specifications, theory, and the diagnosis and repair of problems occurring in the print engine and attached options.
  • Page 13 Transfix and Print Speeds ............. . 2-31 Phaser 8400/8500/8550/8560 Color Printer Service Manual...

  • Page 14: Error Messages And Codes

    37,0XX.xx Errors - PEST Faults ............3-36 Phaser 8400/8500/8550/8560 Color Printer Service Manual...

  • Page 15: General Troubleshooting

    Obtaining a Back Channel Trace with USB to Serial Adapter ........4-74 Phaser 8400/8500/8550/8560 Color Printer Service Manual...

  • Page 16: Adjustments And Calibrations

    Resetting NVRAM ................6-14 Phaser 8400/8500/8550/8560 Color Printer Service Manual...

  • Page 17: Cleaning And Maintenance

    Head Tilt Gear (PL4.0.9) ............. . . 8-45 Phaser 8400/8500/8550/8560 Color Printer Service Manual...

  • Page 18: Parts Lists

    On-site Printhead Troubleshooting Checklist (8500/8550/8560) ........A-13 Index Phaser 8400/8500/8550/8560 Color Printer Service Manual...
  • Page 19 General Information In this chapter... ■ Printer Introduction and Overview ■ Printer Configurations ■ Control Panel Configuration ■ Parts of the Printer ■ Routine Maintenance Items and Consumables ■ Printer Specifications Chapter...
  • Page 20 “General Troubleshooting” on page 4-1 or “Print-Quality Troubleshooting” on page 5-1. Check the main menu for current data and historical error data. ■ Status Page ■ Usage Profile ■ Fault History ■ Diagnostic History Phaser 8400/8500/8550/8560 Color Printer Service Manual...

  • Page 21: Bist Error Reporting

    4. If the problem still occurs, reseat the RAM DIMMs. 5. Replace the Electronics Module. For disassembly, see “Electronics Module (PL5.0.5)” on page 8-46. For replacement, go to the Parts List on page 9-3. Phaser 8400/8500/8550/8560 Color Printer Service Manual...
  • Page 22 Hard TMVH mismatch, write/read failed. 23.4 05.01 Flutter then 05 blinks Hard Communications error. PLD I/O Board 32.1 serial, link down/bad parity. 05.02 Flutter only Soft Communications error. PLD I/O Board 32.2 serial, mismatch. Phaser 8400/8500/8550/8560 Color Printer Service Manual...
  • Page 23 Flutter then 15 blinks Hard CPU interrupt error. 19.3 15.02 Flutter then 15 blinks Hard CPU interrupt error, missing CPU 19.4 interrupts. 15.03 Flutter then 15 blinks Hard CPU interrupt error, IRQ spurious 19.5 assertion. Phaser 8400/8500/8550/8560 Color Printer Service Manual...
  • Page 24 (see inset). For the 8500/8550/8560, the harness comes from the side of the chassis and plugs directly into the Ink Loader. After replacing the 8500/8550/8560 Ink Loader, reset the ink stick count, using the Hidden Service Menu. Phaser 8400/8500/8550/8560 Color Printer Service Manual...
  • Page 25 Caution This is a strong spring that can cause damage if it slips during removal; use care when removing. Move the wires out of the way. Disconnect the motor harness. Phaser 8400/8500/8550/8560 Color Printer Service Manual...
  • Page 26 Also, if the spring arm has been removed from the motor, torque the motor screws securing the spring arm to 20 in.- lbs. Irreversible damage can result from over tightening screws into plastic parts. Phaser 8400/8500/8550/8560 Color Printer Service Manual...
  • Page 27 While pulling back slightly on the Printhead to keep it away from the Drum, unlock (push down) the Right and Left Printhead Restraint arms, then slowly allow the spring-loaded Printhead to tilt forward. 8-10 Phaser 8400/8500/8550/8560 Color Printer Service Manual...
  • Page 28 On the left side, pull the X-Axis Bias Spring Hook out slightly and shift to the side (rotate down). Allow the hook to rest against the detents in the frame. Bias Spring Hook Purge Pump s8500-074 Disconnect the air hose from the Purge Pump. Phaser 8400/8500/8550/8560 Color Printer Service Manual 8-11...
  • Page 29 Adjust Printhead position as required to remove the right restraint. Remove the Roll Block on the left end of the Printhead shaft. Caution The Roll Block may be hot if the printer was just shut down. Printhead Shaft Roll Block s8500-076 8-12 Phaser 8400/8500/8550/8560 Color Printer Service Manual...

This manual is also suitable for:

Phaser 8550Phaser 8560Phaser 8500

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