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Make/Model Information:

  • Brand:   Xerox
  • Models included:
    • Xerox Phaser 840
    • Xerox Phaser 850
    • Xerox Phaser 860
    • Xerox Phaser 8200

File Information:

  • Type:   Factory Service Manual (FSM)
  • Language:   English
  • Number of pages:   287
  • File size:  ∼ 5.98  MB
  • File Format:   PDF only
  • SME Watermarks:   None
  • Password lock:   No
  • Edit/copy/modify:   Yes
  • SKU:   BMXX-1036

NOTE:  This list was created by program script and may not accurately represent the text from the source pages.   For full preview please click on 'Download sample':

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Phaser
Color Printer
840/850/860
Service
Manual
With Phaser
8200 Color Printer Addendum
Contents˙i
Contents
User˙safety˙summary˙
Service˙safety˙summary
List˙of˙Tables˙
List˙of˙Figures
General˙Information 1˙-˙1
Phaser˙840˙Printer˙Overview
Phaser˙850˙Printer˙Overview
Phaser˙860˙Printer˙Overview
Solid˙inks˙
Phaser˙840/850˙RAM˙and˙Printer˙Capabilities
Memory˙Considerations˙Phaser˙840/850
Phaser˙860˙RAM˙and˙Printer˙Capabilities
Memory˙Considerations˙Phaser˙860
Print˙Engine˙Assemblies˙840/850/860
Circuit˙Boards
The˙printer?s˙I2C˙bus˙
Printhead˙Maintenance˙System
Sensor˙Maps
Combination˙sensors˙and˙their˙meanings˙
Media˙tray˙type˙sensing
The˙Main˙Board
Front˙Panel˙-˙Phaser˙840/850˙Printers˙
Front˙Panel˙-˙Phaser˙860
Rear˙Panel˙Connections
Rear˙Panel˙Status˙LEDs
DIP˙Switches˙
Phaser˙840,˙850˙and˙860˙Printer˙Differences˙
Specifications
Regulatory˙Specifications
Error˙Codes˙and˙Messages 2˙-˙37
Phaser˙840/850˙Rear˙Panel˙PS˙and˙PE˙LED˙Codes˙
Phaser˙860˙Power-Up˙Error˙Messages˙and˙LED˙Codes
The˙BIST˙(Built-In˙Self˙Test)
POST˙(Power˙On˙Self˙Test)˙
Fault˙Codes˙
ii˙Phaser˙840/850/860/8200˙Color˙Printer˙-˙Service˙Manual
Troubleshooting 3˙-˙73
Network˙Event˙Logs˙
Electronics˙Troubleshooting
System˙power-up˙sequence
Inoperative˙printer˙problems
Main˙Board˙CPU˙operation˙
Verifying˙print˙engine˙operation˙by˙printing˙a˙built˙in˙page.˙
Verifying˙power˙supply˙operation˙
Measuring˙power˙supply˙voltages˙
Inspecting˙the˙power˙supply˙fuses
Testing˙for˙shorted˙drivers
Testing˙for˙a˙shorted˙motor
Testing˙motor˙and˙solenoid˙resistances˙
Paper˙Path˙and˙Media-based˙Problems
Media-based˙problems
Paper-pick˙errors
Print˙transfer˙jams
Checking˙the˙process˙motor˙and˙drive˙train˙
Media˙skews˙passing˙through˙the˙paper˙path˙
Print˙Image˙Quality˙Problems
Not˙printing
Missing˙ink˙or˙light˙colored˙ink˙band˙running˙length˙of˙print
Color˙is˙uneven˙
Streaks˙or˙lines˙down˙the˙print˙
Scratches˙parallel˙to˙the˙long˙axis˙of˙printing,˙particularly˙with˙film˙
Printing˙too˙light˙or˙too˙dark
White˙portion˙of˙print˙is˙colored
Fuzzy˙Text˙
Poor˙primary˙color˙fills
Ghosting
Poor˙small˙text˙resolution˙
Vertical˙line˙appear˙wavy˙
Oil˙streaks˙on˙print
Incomplete˙image˙transfer˙to˙paper˙
Ink˙smears˙on˙first˙side˙of˙duplex˙print˙
Repeating˙print˙defects˙on˙print
Wrinkling
Image˙is˙offset˙or˙cut˙off
Oil˙streaks˙on˙top˙of˙print˙
Poor˙ink˙adhesion,˙poor˙image˙durability
Evaluating˙the˙printhead˙and˙cap/wipe/purge˙system
Troubleshooting˙following˙cap/wipe/purge˙installation
Macintosh˙printing˙problems
Image˙never˙prints˙
Image˙is˙rotated˙90˙degrees˙
Image˙prints˙in˙black-and-white˙
Printer˙isn?t˙in˙the˙Chooser˙
Windows˙printing˙problems
Contents˙iii
Diagnostics,˙Adjustments˙and˙NVRAM 4˙-˙119
Front˙Panel˙Shortcuts
Hidden˙Service˙Menu˙
Built-in˙Diagnostics˙(Phaser˙860˙Only)
Check˙Menu˙Value˙Keys˙and˙Descriptions˙(Phaser˙860˙only)
Check˙Value˙Menu˙Parameters˙
Adjustments˙
Printing˙service˙test˙prints˙
Printing˙the˙Configuration˙Page˙
Selecting˙Duplex˙(2-sided)˙Oil˙Chase˙
Selecting˙Envelope˙Oil˙Chase˙
Center˙Image
Locking˙the˙printhead
Process˙belt˙tension˙adjustment
Exit˙roller˙drive˙belt˙tension˙adjustment
Y-axis˙belt˙tension˙adjustment˙(Phaser˙840˙printer)
Y-axis˙belts˙tension˙adjustment˙(Phaser˙850/860˙printer)
Printhead-to-drum˙spacing˙adjustment˙(Phaser˙840˙Printer˙Only)
X-axis˙scale˙adjustment˙
Cap/wipe/purge˙assembly˙belt˙adjustments
Drum˙position˙encoder˙gap
Transfix˙roller˙pressure˙spring˙adjustment˙
Vacuum˙check˙(Phaser˙840/850˙Only)
Resetting˙NVRAM˙
Test˙Prints 5˙-˙159
1:˙X-axis˙motion˙
2:˙Weak/missing˙jet˙
3:˙Color˙Bands,˙RGBK˙Dither
4:˙Reverse˙Text
5:˙Big˙Bands˙Hand-fed˙OHP˙
6:˙66%˙Gray,˙dot˙size˙uniformity˙
7:˙Manuf.˙Dot˙position˙(scanner)
8:˙YMCKRGB˙Solid˙Fills˙
9:˙Drum˙Seal
10:˙Manuf.˙paper˙path
11:˙Head-to-Drum˙Gap
12.:˙Manuf˙x-axis˙(scanner)
13:˙Black˙Solid˙Fill
14:˙Red˙Solid˙Fill
15:˙Green˙Solid˙Fill˙
16:˙Blue˙Solid˙Fill
17:˙Cyan˙Solid˙Fill
18:˙Magenta˙Solid˙Fill˙
19:˙Yellow˙Solid˙Fill˙
20:˙OHP˙Color˙Bands˙
21:˙Primary˙Solid˙Fills˙10x
iv˙Phaser˙840/850/860/8200˙Color˙Printer˙-˙Service˙Manual
22:˙Manuf.˙Skew˙Margins˙
23:˙Manuf.˙Banding˙
Cleaning˙and
Maintenance˙6˙-˙173
Cleaning
Pick˙Roller˙Cleaning˙Method˙
Cleaning˙Page˙(Phaser˙840˙printer˙only)˙
Drum˙temperature˙sensor
Maintenance
Maintenance˙roller˙
Waste˙tray˙
Lubrication
Inspection
Key˙FRU˙Removal˙and
Replacement˙7˙-˙179
Main˙board˙and˙its˙components
Power˙supply
Power˙control˙board
Upper˙feed˙roller˙assembly
Paper/drum˙heater
Drum/transfix˙assembly
Drum˙position˙sensor˙assembly˙(Phaser˙840˙printer)˙
Drum˙position˙sensor˙assembly˙(Phaser˙850/860)
Printhead˙
X-axis˙motor˙and˙drive˙assembly˙
Y-axis˙belt˙drive˙assembly˙(Phaser˙840˙printer)
Y-axis˙belt˙drive˙assembly˙(Phaser˙850/860˙printer)
Cap/wipe/purge˙assembly˙(Phaser˙840˙printer)
Cap/wipe/purge˙assembly˙(Phaser˙850/860˙printer)
FRU˙Parts˙List 8˙-˙207
Cabinet˙FRU?s˙
Imaging˙FRU?s˙
Paper˙Path˙FRU?s
Motor˙and˙Fan˙FRUs˙
Circuit˙Board˙FRUs˙
Solenoid˙and˙Clutch˙FRUs˙
Gear˙and˙Belt˙FRUs
Sensor˙and˙Flag˙FRUs˙
High-capacity˙Paper˙Tray˙Assembly˙
Service˙tools
Supplies˙and˙accessories
Contents˙v
Wiring˙Diagrams 9˙-˙235
Phaser˙8200˙Color˙Printer˙Addendum PA˙-˙241
Phaser˙8200˙Printer˙Configurations
Hardware˙Updates˙
Internal˙Pages˙and˙Menu˙Items
Appendix A˙-˙243
On-site˙Printhead˙Troubleshooting˙Checklist
Phaser˙340/350/360/380/840/850˙
On-site˙Electronics˙Troubleshooting˙Checklist˙Phaser˙840/850˙
Z840/z850˙Electronics˙Troubleshooting˙Guide
On-site˙Printhead˙Troubleshooting˙Checklist
Phaser˙860/8200
On-site˙Electronics˙Troubleshooting˙Checklist˙Phaser˙860˙
Troubleshooting˙3˙-˙73
Troubleshooting
The˙troubleshooting˙section˙discusses˙Repair˙Analysis˙Procedures˙(RAPs)˙for˙the˙Phaser
840/850/860˙printers.˙This˙section˙is˙broken˙into˙the˙following˙groups:
Network˙Event˙Logs
Electrical˙Interface˙Problems
Media˙and˙Paper˙Path˙Problems
Printing˙and˙Print˙Image˙Quality˙Problems
Windows˙Printing˙problems
Macintosh˙Printing˙problems
Cap/Wipe/Purge˙Troubleshooting:˙Evaluating˙and˙troubleshooting˙the
printhead˙cap/wipe/purge˙system˙can˙be˙found˙on˙page˙106.
Electrical Interface Problems (RAP) Table
Media and Paper Path Problems (RAP) Table
Table 3-1 Electrical Interface RAP Table
Problem on Page
System Power-Up Sequence page 76
Inoperative Printer: No Lights, No Sound on power-up page 80
Verifying Main Board CPU Operation page 80
Verifying Print Engine operation by its startup page page 81
Verifying Power Supply and Measuring Voltages page 81
Inspecting the power supply fuses page 82
Testing for shorted drivers page 83
Testing for a shorted motor page 84
Testing motor and solenoid resistances page 84
Table 3-2 Media and Paper Path RAP Table
Problem on Page
Media-Based Problems page 85
Paper Pick Errors page 85
Print Transfer Jams page 86
Checking the Process Motor and Drive Train page 86
Media skews passing through the Paper Path page 87
3˙-˙74 Phaser˙840/850/860/8200˙Color˙Printer˙-˙Service˙Manual
Print Image Quality Problems (RAP) Table
Macintosh Printing Problems
Table 3-3 Print and Image Quality Problems RAP Table
Problem on Page
Not Printing page 88
Missing ink or light colored ink band running length of print page 89
Color is uneven page 90
Streaks or lines in the prints page 91
Scratches parallel to the long axis of printing, particularly with
page 92
Printing too light or too dark page 93
White portion of print is colored or marked page 94
Fuzzy text page 95
Poor primary color fills page 96
Ghosting page 97
Poor small text resolution page 98
Vertical line appears wavy page 99
Oil streaks on print (top or bottom) page 100
Incomplete image transfer to paper page 101
Ink smears on first side of duplex print page 102
Repeating print defects on print page 103
Wrinkling page 104
Image is offset or cut off page 105
Poor ink adhesion, poor image durability page 105
Table 3-4 Macintosh Printing Problems RAP Table
Problem on Page
Image Never Prints page 115
Image is rotated 90 degrees page 115
Image prints in black and white page 115
Printer isn’t the Chooser page 116
Removal˙and˙Replacement˙Procedures˙7˙-˙179
Key˙FRU˙Removal˙and
Replacement
This˙topic˙illustrates˙how˙to˙remove˙and˙replace˙key˙printer˙Field˙Replaceable˙Units
(FRUs).˙For˙more˙detailed˙removal/replacement˙procedures,˙refer˙to˙the Color˙Printer
Service˙&˙Support˙Resources˙CD-ROM .˙Procedures˙included˙here˙are:
Main˙board˙and˙its˙components 7˙-˙180
Power˙supply 7˙-˙183
Power˙control˙board 7˙-˙184
Upper˙feed˙roller˙assembly 7˙-˙185
Preheat/drum˙heater˙assembly 7˙-˙187
Drum/transfix˙assembly 7˙-˙188
Drum-position˙sensor˙assembly 7˙-˙192
Printhead 7˙-˙196
X-axis˙motor˙and˙drive˙assembly 7˙-˙199
Y-axis˙belt˙drive˙assembly 7˙-˙200
Cap/wipe/purge˙assembly 7˙-˙202
This˙topic˙concludes˙with˙a˙discussion˙about˙printhead˙locking.
7˙-˙180˙Phaser˙840/850/860/8200˙Color˙Printer˙-˙Service˙Manual
Main board and its components
Phaser˙840˙printer:
1. Power˙down˙the˙printer.˙Leave˙the˙power˙cord˙plugged˙in˙to˙provide˙a˙ground˙path˙for
static˙discharges.˙Remove˙the˙interface˙cables.
2. Loosen˙the˙two˙rear˙panel˙securing˙screws.
3. Slide˙out˙the˙main˙board.
4. If˙you˙are˙replacing˙the˙main˙board,˙transfer˙the˙socketed˙realtime˙clock/NVRAM˙chip
and˙the˙printer˙ID˙chip˙to˙the˙new˙board˙so˙that˙the˙printer?s˙settings˙and˙Ethernet
address˙are˙retained.˙Also˙swap˙the˙SCSI˙riser˙board,˙code˙ROM˙DIMM˙and˙the
SDRAM˙DIMMs.
Fig 7-1 Removing the Phaser 840 printer main board
840-4-36
Press here
when installing
Realtime
clock/NVRAM
Printer
Code ROM


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