Xerox Phaser 8400, Service Manual

Page 1: ...3ERVICE ANUAL 0HASER 0 OLOR 0RINTER...

Page 2: ......

Page 3: ...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 instructi...

Page 4: ...Birch Carta IntelliSelect Mythos Quake and Tekton are trademarks of Adobe Systems Incorporated in the United States and or other countries Apple AppleTalk Bonjour EtherTalk LaserWriter LocalTalk Maci...

Page 5: ...esults achieved through a previous action Caution A caution indicates an operating or maintenance procedure practice or condition that if not strictly observed results in damage to or destruction of e...

Page 6: ...cessary contact a licensed electrician to install a properly grounded outlet If the product loses its ground connection contact with conductive parts may cause an electrical shock A protective ground...

Page 7: ...remove the wrist strap before applying power to the unit under test to avoid potential shock After removing a static sensitive assembly from its anti static bag place it on a grounded conductive surf...

Page 8: ...ts could come into contact with dangerous voltages and currents Warning Labels Read and obey all posted warning labels Throughout the printer warning labels are displayed on potentially dangerous comp...

Page 9: ...arning Do not try to manually rotate or manually stop the drive assemblies while any printer motor is running Servicing Heated Components Warning This printer uses heat to fuse the image to media Seve...

Page 10: ...no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equ...

Page 11: ...23 EEC as amended by 93 68 EEC January 1 1996 Electromagnetic Compatibility Directive 89 336 EEC March 9 1999 Radio Telecommunications Terminal Equipment Directive 1999 5 EC This product if used prop...

Page 12: ...detailed troubleshooting procedures for error messages and codes generated by resident diagnostics Section 4 General Troubleshooting Troubleshooting discussions cover the operation of Power On Self Te...

Page 13: ...th Printer Interfaces 1 7 Rear View 1 8 Routine Maintenance Items and Consumables 1 9 Printer Specifications 1 10 Physical Dimensions and Clearances 1 10 Functional Specifications 1 12 Electrical Spec...

Page 14: ...Faults 3 14 7 0XX 4x Errors Process Motor Gearbox Faults 3 15 7 0XX 4x Errors Printhead Tilt Faults 3 16 7 0XX 6x Errors Program Faults 3 20 8 0XX xx Errors Wiper Media Drive Faults 3 21 8 0XX 6x Erro...

Page 15: ...p Sequence 4 51 Miscellaneous Electrical Troubleshooting 4 56 Verifying Power Supply Operation 4 64 Measuring AC Power Supply Voltages 4 64 Measuring DC Power Supply Voltages 4 65 Ensuring Ground Inte...

Page 16: ...Offset or Cut Off 5 33 Poor Ink Adhesion Poor Image Durability 5 33 Analyzing Service Test Prints 5 34 Weak Missing Jet 5 34 X Axis Motion 8400 Only 5 35 Color Bands RGBK Dither 5 36 Reverse Text 5 3...

Page 17: ...19 8 16 Wiper Assembly PL2 0 17 8 17 Stripper Carriage PL2 0 12 and Transfix Roller PL2 0 13 8 19 Preheater PL2 0 17 8 20 Duplex Roller PL3 0 8 8 21 Transfix Load Module PL2 0 15 8 22 Transfix Camsha...

Page 18: ...s 9 12 PL 6 0 Sensors and Flags Actuators 9 14 Xerox Supplies 9 16 10 Wiring Diagrams Main Wiring Diagram 10 2 Main Wiring Diagram Continued 10 3 Right Side Wiring Diagram 10 4 Right Side Wiring Diagr...

Page 19: ...r General Information In this chapter Printer Introduction and Overview Printer Configurations Control Panel Configuration Parts of the Printer Routine Maintenance Items and Consumables Printer Specif...

Page 20: ...For information on Service Diagnostics and all internal printer test functions see Service Diagnostics Mode Menu on page 4 5 For troubleshooting printer problems not associate with or displaying an er...

Page 21: ...s Electrical Troubleshooting on page 56 and check the power supply fuses On Solid dimly On Solid dimly Initialization failure The printer is held in reset mode This can be caused by an Electronics Mod...

Page 22: ...Note Before replacing the Electronics Module for any POST errors do the following 1 Disconnect all connections to the Electronics Module 2 Plug in the Power Cord and power on the Electronics Module 3...

Page 23: ...n 11 blinks Hard EEPROM re read failure 1 Check EEPROM orientation 2 Replace EEPROM 12 3 11 04 Flutter then 11 blinks Hard EEPROM data failure mismatch error 1 Check EEPROM orientation 2 Replace EEPRO...

Page 24: ...e disconnects directly from the Ink Loader Note Hooks on the bottom of the Ink Loader allow it to hang on the rear of the printer chassis while the connectors are removed 5 Disconnect the 2 connectors...

Page 25: ...pulling the end of the spring arm toward the front of the printer using your fingers 3 Slide the belt off the pulley 4 Using a spring hook or pliers remove the Y Axis Tension Spring from the chassis...

Page 26: ...m and remove the spring arm Replacement Note Check that the spring arm screws are in the right locations the grounding connection is attached and that the arm floats freely Screws in plastic are torqu...

Page 27: ...and the Drum to protect the Drum from damage 2 On the right side lift up on the wiper lock to unlock the Wiper Assembly gear train 3 Rotate the gears to lower the Wiper all the way down Caution To pr...

Page 28: ...ice Parts Disassembly 5 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 6 Disconnect the air ho...

Page 29: ...ead then lift up and slightly toward the rear to remove Note Adjust Printhead position as required to remove the right restraint 8 Remove the Roll Block on the left end of the Printhead shaft Caution...