1. DL manuals
  2. Xerox
  3. Printer
  4. Phaser 7400
  5. Service Manual

Xerox Phaser 7400 Service Manual

Manual is about: color printer

Summary of Phaser 7400

  • Page 1

    Phaser ® 7400 color printer service manual book 1: print engine.

  • Page 2: 1 General Information

    Contents xiii contents service terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Iii symbols marked on the product . . . . . . . . . . . . . . . . . . . . . . . Iv power safety precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V electrostatic dischar...

  • Page 3: 2 Theory of Operation

    Xiv phaser 7400 color printer service manual 2 theory of operation phaser 7400 operational overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 imaging unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 led heads . . . . . . . . . . . . . . . ....

  • Page 4: 3 Error Messages and Codes

    Contents xv chassis assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-46 basket assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-46 waste toner recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-47 ...

  • Page 5

    Xvi phaser 7400 color printer service manual jam in duplex unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-26 jam at door e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-27 jam under imaging units . . . . . . . . . . . . . . . . . . . . . ....

  • Page 6

    Contents xvii tray and media errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-71 clear tray 1 (mpt) riser plate . . . . . . . . . . . . . . . . . . . . . . . . . . 3-71 clear tray [2][3][4][5][6] riser plate . . . . . . . . . . . . . . . . . . . . . 3-73 out of pa...

  • Page 7

    Xviii phaser 7400 color printer service manual unsupported duplex unit rom . . . . . . . . . . . . . . . . . . . . . . . . 3-114 unsupported tray 2 rom . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-115 unsupported tray [3][4][5][6] rom . . . . . . . . . . . . . . . . . . . . 3-116 unsupp...

  • Page 8: 4 General Troubleshooting

    Contents xix tray [3][4][5][6] lift motor failure. . . . . . . . . . . . . . . . . . . . . . 3-160 error in the transfer unit belt . . . . . . . . . . . . . . . . . . . . . . . . . . 3-162 duplex unit fan failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-163 +24v not available ...

  • Page 9

    Xx phaser 7400 color printer service manual inoperable printer troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11 engine power-up sequence (bist) . . . . . . . . . . . . . . . . . . . . . . 4-12 printer continually displays warming up... . . . . . . . . . . . . . . . . 4-13...

  • Page 10: 7 Cleaning and Maintenance

    Contents xxi 6 adjustments and calibrations calibrations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2 color calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2 margin calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2 automa...

  • Page 11

    Xxii phaser 7400 color printer service manual print engine disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-12 covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-13 rear cover . . . . . . . . . . . . . . . ....

  • Page 12

    Contents xxiii side output tray detect sensor . . . . . . . . . . . . . . . . . . . . . . . . . 8-73 side output tray stack full sensor. . . . . . . . . . . . . . . . . . . . . . . 8-75 door e detect sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-77 fuser release sensor ....

  • Page 13: 9 Parts List

    Xxiv phaser 7400 color printer service manual paper size switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-139 motor driver board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-141 imaging unit sensor board . . . . . . . . . . . . . . . . . . . . . . ....

  • Page 14: Reference

    Contents xxv motor driver board (1/6) . . . . . . . . . . . . . . . . . . . . 10-31 motor driver board (2/6) . . . . . . . . . . . . . . . . . . . . 10-32 motor driver board (3/6) . . . . . . . . . . . . . . . . . . . . 10-33 motor driver board (4/6) . . . . . . . . . . . . . . . . . . . . 10-34 mot...

  • Page 15: In This Chapter...

    4 section general troubleshooting in this chapter... ■ power on self test (post) ■ service diagnostics ■ control panel troubleshooting ■ inoperable printer troubleshooting ■ ac power supply troubleshooting ■ dc power supply troubleshooting ■ media jams and the paper path ■ operating system and appli...

  • Page 16: In This Chapter...

    8 section service parts disassembly in this chapter... ■ overview 8-5 ■ general notes on disassembly 8-6 ■ maintenance items and consumables imaging unit removal 8-8 toner cartridge removal 8-9 transfer unit removal 8-10 fuser removal 8-11 ■ covers rear cover 8-13 lower rear cover 8-14 right rear co...