Xerox 7700 Service Manual - Troubleshooting
Phaser 7700 Color Laser Printer Service Manual
xiii
Entering Service Diagnostics Mode .................................................................2-35
Service Diagnostics Test Menu Functions ........................................................2-36
Error Codes and Messages Troubleshooting ...........................................................2-46
Voltage Measurements ............................................................................................2-46
Fuser Connector Pin Locations ........................................................................2-47
Troubleshooting
3-87
Troubleshooting Network Problems ........................................................................3-88
Operating System and Application Problems ...................................................3-88
Media Jams and the Paper Path .......................................................................3-88
Print Image Quality Problems ..........................................................................3-88
Troubleshooting Power Supplies and Interlocks .....................................................3-89
Troubleshooting AC Power ..............................................................................3-89
Troubleshooting the Low-voltage Power Supplies ...........................................3-89
Troubleshooting the +3.3 VDC and +5 VDC LVPS ............................................3-90
Troubleshooting the +24 VDC LVPS ................................................................3-90
Interlock Circuit Diagram .................................................................................3-91
The +24 VDC Interlock Circuit ..........................................................................3-91
The +5 VDC Interlock Circuit ............................................................................3-92
Troubleshooting When th
oes Not Come to a “Ready” State ...................3-93
Printer Does Nothing
wer Switched On .............................................3-93
Fans On, Front Panel
On .................................................................3-93
Fans On, Front Panel
, No Front Panel message .............................3-93
Front Panel Continua
the Xerox Phaser 7700 Splash Screen .........3-93
Front Panel Continua
"warming up - please wait" Message ............3-93
Front Panel displays
t Encountered" message .................................3-94
Troubleshooting - Printer
a “Ready” State ..............................................3-94
False LH Door, RH Do
nt Door Open Messages .................................3-94
False "Load Paper in
,4]" Message ..................................................3-94
False "Tray [1,2,3,4]
essage ...........................................................3-94
Tray 1 Will Not Lift ..
........................................................................3-95
Tray 2, 3 or 4 Will No
........................................................................3-95
Tray 2, 3 and 4 Will N
Printer Will Not Recognize
ary Feeder ......................................................3-96
Printer Will Not Reco
inisher ............................................................3-96
Troubleshooting the Tone
/Auger/Developer System ..............................3-97
Checking the Toner C
........................................................................3-97
Checking the Toner A
m ...................................................................3-98
Checking the Develop
nsor ..............................................................3-101
Checking the Develop
......................................................................3-102
Tips ................................................................................................................3-102
Operation System and Application Problems ........................................................3-104
Macintosh Printing Problems ........................................................................3-104