Xerox Phaser 7760 User manual

705P01119
March 2006
Phaser® 7760 Color Laser Printer
Service Manual

March 2006
i
Introduction
Launch
Introduction
About this Manual ........................................................................................................... iii
Organization....................................................................................................................iii
How to Use this Documentation...................................................................................... iv
Power Safety Precautions............................................................................................... viii
Service Safety Summary................................................................................................. viii
Electrostatic Discharge (ESD) Precautions..................................................................... ix
Symbology and Nomenclature ........................................................................................ x
Regulatory Specifications................................................................................................ xii
Phaser 7760 Printer Introduction and Overview ............................................................. xiii
Phaser 7760 Printer Configurations ................................................................................ xiii
Parts of the Printer .......................................................................................................... xiv
Phaser 7760 Control Panel Configuration....................................................................... xvi
Image Processor Board and Rear Panel Host Interface ................................................. xvii
Printer Options ................................................................................................................ xvii
Routine Maintenance Items and Consumables .............................................................. xviii
Specifications ..................................................................................................................xix
Prohibited Media ............................................................................................................. xxiv
Glossary of Terms........................................................................................................... xxiv

March 2006
1-1
Phaser® 7760 Color Laser Printer
Service Call Procedures
Launch
1 Service Call Procedures
Service Call Procedures.................................................................................................. 1-3
Detailed Maintenance Activities (High Frequency Service Items - HFSI) ....................... 1-4
Cleaning Procedures....................................................................................................... 1-4
Cleaning Materials .......................................................................................................... 1-5
Common Tools................................................................................................................ 1-5

March 2006
2-1
Phaser® 7760 Color Laser Printer
Status Indicator RAPs
Launch
2 Chain 1
01.300, 01-516 Left Cover (Door A) Open ...................................................................... 2-5
01.301, 01-511 Left Lower Cover (Door B) Open ........................................................... 2-6
01.302, 01-510 Front Cover Door Open ......................................................................... 2-6
01.303, 01-509 Tray Module Left Door (Door C) Open................................................... 2-7
01.306, 01-514 Duplex Door ........................................................................................... 2-8
01-540.01 Tray 1 (MPT) Paper Size Changed................................................................ 2-8
01-540.2 Tray 3 Paper Size ............................................................................................ 2-9
01-540.3 Tray 4 Paper Size ............................................................................................ 2-9
01-540.04 Tray 5 Paper Size .......................................................................................... 2-10
01-540.05 Tray 1 (MPT) Paper Size ............................................................................... 2-10
01-545.01 Tray 2 Paper Size Sensor.............................................................................. 2-11
01-545.02 Tray 3 Paper Size Sensor.............................................................................. 2-12
01-545.03 Tray 4 (HCF) Paper Size Sensor ................................................................... 2-13
01-545.04 Tray 5 (HCF) Paper Size Sensor ................................................................... 2-14
2 Chain 2
02-707, 02-585 Control Panel Button Fail....................................................................... 2-15
2 Chain 3
03-578 Paper Tray Error ................................................................................................. 2-17
03-587 Paper Tray 2 Not Available ................................................................................. 2-17
03-588 Paper Tray 3 Not Available ................................................................................. 2-18
03-589 Paper Tray 4 not Available.................................................................................. 2-18
03-590 Paper Tray 5 not Available.................................................................................. 2-19
03-594 Tray 1 (MPT) Broken .......................................................................................... 2-19
03.777, 03-546 Power Loss Detected............................................................................. 2-20
03.946, 07-514.01 Tray 2 Out Of Place .......................................................................... 2-20
03.947, 07-514.02 Tray 3 Out Of Place .......................................................................... 2-21
03.948, 07-514.03 Tray 4 Out Of Place .......................................................................... 2-21
03.949, 07-514.04 Tray 5 Out Of Place .......................................................................... 2-22
03.950, 07-544 Tray 2 No Paper..................................................................................... 2-22
03.951, 07-545 Tray 3 No Paper..................................................................................... 2-23
03.952, 07-533 Tray 4 No Paper..................................................................................... 2-23
03.953, 07-534 Tray 5 No Paper..................................................................................... 2-24
03.954, 07-535 Bypass Tray 1 (MPT) No Paper............................................................. 2-24
03.958 Tray 1 (MPT) Size Mismatch............................................................................... 2-25
03.959, 01-545.01 Tray 2 Size Mismatch ....................................................................... 2-25
03.960, 01-545.02 Tray 3 Size Mismatch ....................................................................... 2-26
03.961, 01-545.03 Tray 4 Size Mismatch ....................................................................... 2-26
03.962, 01-545.04 Tray 5 Size Mismatch ....................................................................... 2-27
03.985, 01-540.01 Tray 1 (MPT) Paper Size .................................................................. 2-27
2 Chain 4
04.322 Main Motor Failure .............................................................................................. 2-29
04.340, 04-561 Printer RAM Failure or Flash ROM Limit Failure ................................... 2-29
04.341, 04-561 Printer Logic Failure or Flash ROM Read Write .................................... 2-30
04.344, 04-561 Printer Micro Pitch.................................................................................. 2-31
04.345, 04-561 MCU/HVPS Communication .................................................................. 2-32
04.346, 04-562 Accumulator Belt Home Position Fail Too Long or Out of Position........ 2-32
04.348, 04-562 IBT Belt Edge......................................................................................... 2-35
04.349, 04-561 Marking Software Logic ......................................................................... 2-38
04.350 Printer Video Failure............................................................................................ 2-38
04.351 Printer Xerographics Failure................................................................................ 2-39
04.352, 04.354, 04.358 Printer Communications Failure................................................ 2-39
04.353 Printer Paper Handling Failure............................................................................ 2-40
04.358 Printer Communication Failure............................................................................ 2-40
04.361, 04-560 Imaging Unit Motor................................................................................. 2-41
04.362, 04-561 Printer NVM Read Write......................................................................... 2-43
04.363, 04-560 K Imaging Unit Motor Failure ................................................................. 2-43
04.371, 04-561 Printer Controller Timing Failure ............................................................ 2-45
04.376 Zero Crossing Signal Not Detected..................................................................... 2-45
04.414, 04-516 IBT Belt Cleaner..................................................................................... 2-46
04.415, 04-517 2nd BTR Unit.......................................................................................... 2-47
04.417 Transfer Belt Assembly ....................................................................................... 2-47
04.420 Transfer Belt Assembly ....................................................................................... 2-48
04.421, 04-515 IBT Belt Cleaner Life End....................................................................... 2-48
04.435 HVPS Comm. Fail ............................................................................................... 2-49
04.605 Printer NVRAM Corrupt....................................................................................... 2-49
04.640 Belt Tracking ....................................................................................................... 2-50
04.641 Belt Edge Not Detected....................................................................................... 2-51
04.642 Belt Edge Not in Position..................................................................................... 2-52
04.650 Printer Cycle Down Time Out.............................................................................. 2-53
2 Chain 6
06.372, 06-515 ROS Polygon Motor ............................................................................... 2-55
06.380, 06-515 ROS SOS Y, M, C, K Length Failure ..................................................... 2-56
06.385, 06-515 ROS ASIC .............................................................................................. 2-58
2 Chain 7
07.104, 07-502 Tray 2 Feed Out Sensor......................................................................... 2-59
07.105, 07-503 Tray 2 Misfeed ....................................................................................... 2-60
07.110, 07-504 Tray 3 Misfeed ....................................................................................... 2-61
07.115, 07-501 Tray 4 Misfeed (TTM)............................................................................. 2-63
07.117, 07-506 Tray 4 Misfeed (3TM)............................................................................. 2-65
07.119, 07-507 Tray 5 Misfeed (TTM)............................................................................. 2-66
07.120, 07-508 Tray 5 Misfeed (3TM)............................................................................. 2-68
07.122, 07-509 Tray 5 Opened (TTM) ............................................................................ 2-69
07.250, 07-542 Tray Module Communication Fail .......................................................... 2-70
07.270, 03-587 Tray 2 Size Sensor................................................................................. 2-71
07.271, 03-588 Tray 3 Size Sensor................................................................................. 2-72
07.272, 03-589 Tray 4 Size Sensor (3TM)...................................................................... 2-73
07.273, 03-590 Tray 5 Size Sensor (3TM)...................................................................... 2-74
07.274, 03-594 Tray 1 (MPT) Size Sensor...................................................................... 2-75
07.276, 03-589 Tray 4 Size Sensor (TTM)...................................................................... 2-76
07.277, 03-590 Tray 5 Size Sensor (TTM)...................................................................... 2-77
07.281, 03-587 Tray 2, 3, 4, 5 Lift Failure ....................................................................... 2-78
07.293, 03-590 Tray 5 Lift (TTM) .................................................................................... 2-83
07.401 - 07.409 Tray 1, 2, 3, 4 Feed Roller Near Life or Feed Roller Life End............... 2-84
07.930 Tray 2 Paper Size Mismatch ............................................................................... 2-85
07.931 Tray 3 Paper Size Mismatch ............................................................................... 2-85
07.932 Tray 4 Paper Size Mismatch ............................................................................... 2-86
07.933 Tray 5 Paper Size Mismatch ............................................................................... 2-86
07.935, 03-578 Job Continue Not Available.................................................................... 2-87

March 2006
2-2 Phaser® 7760 Color Laser Printer
Launch
Status Indicator RAPs
07.954, 01-540.05 Tray 1 (MPT) Size Mismatch (Slow Scan Direction)......................... 2-87
07.959, 07-513, 07-517 Tray 1 Paper Mismatch 1.......................................................... 2-88
07.960, 1-540.05 Tray 1 (MPT) Paper Mismatch 2......................................................... 2-88
07.969, 07-511 Full Paper Stack..................................................................................... 2-89
2 Chain 8
08.149, 07-543 (3TM) Tray 4 Takeaway Sensor On....................................................... 2-91
08.150, 07-543 (3TM) Tray 5 Takeaway Sensor On....................................................... 2-92
08.151, 07-543 Tray 4 Takeaway Sensor On ................................................................. 2-93
08.152, 07-543 Tray 5 Takeaway Sensor On ................................................................. 2-94
08.164, 07-529, 07-536 POB Sensor .............................................................................. 2-95
08.175, 07-513, 05-517 Registration Sensor On Jam Tray 1 ......................................... 2-98
08.176, 07-531, 07-536 Registration Sensor On Jam Tray 1-4 ...................................... 2-99
08.180, 07-526 Registration Sensor On Duplex ............................................................. 2-100
08.181, 07-527 Registration Sensor On Wait Sensor ..................................................... 2-102
08.184, 07-532, 07-536 Registration Sensor Off ............................................................ 2-104
08.620 RegiCon Temp Sensor........................................................................................ 2-105
08.622 RegiCon Data Overflow (A1 Patch X) ................................................................. 2-106
08.623 Regicon Data Overflow (A2 Patch Y).................................................................. 2-106
08.624 Regicon Data Overflow (Patch Magnification) .................................................... 2-107
08.625 Regicon Sample Block (A1 Patch-rear) .............................................................. 2-107
08.626 Regicon Sample Block (A1 Patch-front).............................................................. 2-108
08.627 Regicon Sample Lateral (A1 Patch-rear) ............................................................ 2-108
08.628 Regicon Sample Lateral (A1 Patch-front) ........................................................... 2-109
08.629 Regicon Skew (Patch Y) ..................................................................................... 2-109
08.630 Regicon Skew (Patch M)..................................................................................... 2-110
08.631 Regicon Skew (Patch K) ..................................................................................... 2-110
08.900, 07-528 Static Jam .............................................................................................. 2-111
2 Chain 9
09.330 Developer Drive Motor Fail ................................................................................. 2-113
09.342, 09-548 2nd BTR Contact or Retract Failure....................................................... 2-113
09.348, 09-548 1st BTR Contact..................................................................................... 2-118
09.350, 09-548 IBT Home Sensor .................................................................................. 2-121
09.351, 09-548 Accumulator Belt Drive Logic Failure..................................................... 2-123
09.358, 09-552 Waste Cartridge Full Toner Sensor Failure ........................................... 2-126
09.360, 09-556 Y, M, C, K Imaging Units Communication Failure.................................. 2-127
09.380, 09-548 Y, M, C, K ATC Sensor Failure ............................................................. 2-130
09.390, 09-549 New Black Toner Cartridge .................................................................... 2-132
09.391, 09-549 New Cyan Toner Cartridge .................................................................... 2-133
09.392, 09-549 New Magenta Toner Cartridge............................................................... 2-133
09.393, 09-549 New Yellow Toner Cartridge .................................................................. 2-134
09.408, 09-508 Waste Toner Cartridge Near Full ........................................................... 2-134
09.409 Waste Toner Cartridge........................................................................................ 2-135
09.410, 09-565 Yellow Toner Cartridge Near Empty ...................................................... 2-135
09.411, 09-566 Magenta Toner Cartridge Near Empty................................................... 2-136
09.412, 09-567 Cyan Toner Cartridge Near Empty ........................................................ 2-137
09.413, 09-568 Black Toner Cartridge Near Empty ........................................................ 2-138
09.428, 09-594 Change Black Imaging Unit Soon .......................................................... 2-139
09.429, 09-591 Change Yellow Imaging Unit Soon ........................................................ 2-140
09.430, 09-592 Change Magenta Imaging Unit Soon..................................................... 2-140
09.431, 09-593 Change Cyan Imaging Unit Soon .......................................................... 2-141
09.432 Yellow Imaging Unit Replaced ............................................................................ 2-141
09.433 Magenta Imaging Unit Replaced......................................................................... 2-142
09.434 Cyan Imaging Unit Replaced............................................................................... 2-142
09.435 Black Imaging Unit Replaced .............................................................................. 2-143
09.446 Black Imaging Unit End of Life ............................................................................ 2-143
09.447 Cyan Imaging Unit End of Life............................................................................. 2-144
09.448 Magenta Imaging Unit End of Life ....................................................................... 2-144
09.449 Yellow Imaging Unit End of Life .......................................................................... 2-145
09.451-09.459 C, M, Y, K Dev Near Life or Dev Near Life End ...................................... 2-145
09.654 ADC Sensor ........................................................................................................ 2-146
09.660 Environment Sensor Temperature ...................................................................... 2-147
09.661 Environment Sensor Temperature ...................................................................... 2-148
09.670 New Black Toner Cartridge Detected.................................................................. 2-149
09.671 New Cyan Toner Cartridge Detected .................................................................. 2-149
09.672 New Magenta Toner Cartridge Detected............................................................. 2-150
09.673 New Yellow Toner Cartridge Detected................................................................ 2-150
09.684 ADC Shutter ........................................................................................................ 2-151
09.695 Failure Position Judgement................................................................................. 2-152
09.910, 09-503 Black Imaging Unit Type Mismatch........................................................ 2-152
09.911, 09-504 Cyan Imaging Unit Type Mismatch ........................................................ 2-153
09.912, 09-505 Magenta Imaging Unit Type Mismatch................................................... 2-153
09.913, 09-5065 Yellow Imaging Unit Type Mismatch.................................................... 2-154
09.920, 09-596 Yellow Toner Cartridge Empty ............................................................... 2-154
09.921, 09-586 Magenta Toner Cartridge Empty............................................................ 2-155
09.922, 09-587 Cyan Toner Cartridge Empty ................................................................. 2-155
09.923, 09-588 Black Toner Cartridge Empty................................................................. 2-156
09.924, 09-589 Waste Toner Cartridge Full.................................................................... 2-156
09.925, 09-590 Waste Toner Cartridge Installation......................................................... 2-157
09.930, 09-553 Black Imaging Unit Not Detected ........................................................... 2-157
09.931, 09-554 Cyan Imaging Unit Not Detected............................................................ 2-158
09.932, 09-555 Magenta Imaging Unit Not Detected ...................................................... 2-158
09.933, 09-556 Yellow Imaging Unit Not Detected ......................................................... 2-159
2 Chain 10
10.105, 07-532 Fuser Exit Switch On.............................................................................. 2-161
10.106, 07-532 Fuser Exit Switch Off.............................................................................. 2-162
10.110, 07-532, 07-536 Printer Exit Sensor On .............................................................. 2-162
10.111, 07-532, 07-536 Printer Exit Sensor Off .............................................................. 2-163
10.125, 07-527 Duplex Wait Sensor On.......................................................................... 2-163
10.348, 10-527 Fuser Main Lamp Failure ....................................................................... 2-165
10.349, 10-527 Front Thermistor Open........................................................................... 2-168
10.350, 10-527 Fuser Sub Lamp Heat Failure................................................................ 2-169
10.351, 10-527 Rear Thermistor Open ........................................................................... 2-172
10.352, 10-527 Front Time Warm Up Failure or SSR1 On Time Failure ........................ 2-173
10.354, 10-527 Fuser STS (Rear) Warm Time Failure or Fuser SSR2 On Time Failure 2-177
10.391 LVPS Fan Fail ..................................................................................................... 2-181
10.392 Rear Cooling Fan Fail ......................................................................................... 2-182
10.398, 10-527 Fuser Fan Failure................................................................................... 2-183
10.420, 10-524 Fuser Near End Of Life .......................................................................... 2-184
10.421, 10-523 Fuser End Of Life ................................................................................... 2-185
10-505 Fuser Warm Up................................................................................................... 2-185
10.600 Bottom, Developer Fan Fail................................................................................. 2-186

March 2006
2-3
Phaser® 7760 Color Laser Printer
Status Indicator RAPs
Launch
2 Chain 12 A/P Finisher
12-112, 12-576, 12-577 H-Transport Entrance Sensor On Jam ..................................... 2-187
12-113 Booklet In Sensor On Jam .................................................................................. 2-189
12-114 Booklet In Sensor OFF Jam................................................................................ 2-191
12-115 Booklet Folder Roll Exit Sensor On Jam............................................................. 2-193
12-123 H-Transport Tray Exit Sensor On Jam................................................................ 2-195
12-124 H-Transport Top Tray Exit Sensor Off Jam ........................................................ 2-197
12-125 Gate Sensor On Jam .......................................................................................... 2-199
12-132 Xport Entrance Sensor On Jam .......................................................................... 2-201
12-142 Buffer Path Sensor On Jam ................................................................................ 2-203
12-151 Compile Exit Sensor OFF Jam ........................................................................... 2-205
12-152 Compile Exit Sensor ON Jam ............................................................................. 2-208
12-161 Set Eject Jam...................................................................................................... 2-211
12-162 H-Transport Exit Sensor On Jam........................................................................ 2-213
12-171 Top Tray Exit Sensor ON Jam ............................................................................ 2-215
12-172 Top Tray Exit Sensor Off Jam............................................................................. 2-218
12-180 Booklet Folder Roll Exit Sensor Off Jam............................................................. 2-221
12-211, 12-576, 12-577 Stacker Tray Fail ...................................................................... 2-223
12-212, 12-576, 12-577 Stacker Upper Limit Fail ........................................................... 2-226
12-213, 12-576, 12-577 Stacker Lower Limit Fail .......................................................... 2-228
12-221, 12-576, 12-577 Front Tamper Home Sensor On Fail ........................................ 2-230
12-223, 12-576, 12-577 Front Tamper Home Sensor Off Fail ........................................ 2-233
12-224, 12-576, 12-577 Rear Tamper Home Sensor Off Fail......................................... 2-235
12-225, 12-518 Booklet Tamper F Home Sensor ON Fail .............................................. 2-238
12-226, 12-518 Booklet Tamper F Home Sensor OFF Fail ............................................ 2-240
12-227, 12-518 Booklet End Guide Home Sensor OFF Fail ........................................... 2-242
12-228, 12-518 Booklet End Guide Home Sensor ON Fail............................................. 2-244
12-229, 12-518 Booklet Tamper R Home Sensor ON Fail.............................................. 2-246
12-230, 12-518 Booklet Tamper R Home Sensor OFF Fail ............................................ 2-248
12-231, 12-521 Puncher Home Sensor ON Fail ............................................................. 2-250
12-232, 12-521 Puncher Home Sensor OFF Fail ........................................................... 2-251
12-233, 12-521 Puncher Move Home Sensor ON Fail ................................................... 2-252
12-234, 12-521 Puncher Move Home Sensor OFF Fail.................................................. 2-254
12-243, 12-518 Booklet Knife Home Sensor ON Fail ..................................................... 2-256
12-246, 12-518 Booklet Stapler FAIL.............................................................................. 2-258
12-247, 12-579 Side Regi Sensor OFF Fail.................................................................... 2-260
12-258, 12-581 Booklet Broken ...................................................................................... 2-262
12-260, 12-576, 12-577 Eject Clamp Home Sensor On Fail........................................... 2-262
12-261, 12-518 Booklet Knife Folding Sensor Fail.......................................................... 2-265
12-263, 12-576, 12-577 Rear Tamper Home Sensor On Fail......................................... 2-267
12-264, 12-518 Booklet Drawer Broken Fail ................................................................... 2-269
12-265, 12-518 Booklet Knife Home Sensor OFF Fail.................................................... 2-270
12-266, 12-518 Booklet Compiler No Paper Sensor Fail ................................................ 2-272
12-269, 12-518 Booklet Sub-CPU Communications Fail ................................................ 2-274
12-282, 12-576, 12-577 Eject Clamp Home Sensor Off Fail........................................... 2-276
12-283 Set Clamp Home Sensor On Fail........................................................................ 2-279
12-284, 12-576, 12-577 Set Clamp Home Sensor Off Fail ............................................. 2-282
12-286, 12-521 Decurler Home Sensor On Fail.............................................................. 2-284
12-287, 12-521 Decurler Home Sensor Off Fail.............................................................. 2-287
12-291, 12-576, 12-577 Stapler FAIL.............................................................................. 2-289
12-295, 12-576, 12-577 Stapler Move Position Sensor On Fail...................................... 2-292
12-296, 12-576, 12-577 Stapler Move Position Sensor Off Fail...................................... 2-295
12-300, 12-560 Eject Cover Open................................................................................... 2-298
12-302, 12-564 Finisher Front Door Interlock OPEN (A/P Finisher) ............................... 2-299
12-303, 12-566 H-Transport Cover Open ....................................................................... 2-301
12-307, 12-562 Booklet Drawer Set Fail ......................................................................... 2-303
12-350, 12-521 Finisher Communication Fail ................................................................. 2-304
12-900 Paper at Buffer Path Sensor ............................................................................... 2-305
12-901 Paper at H-Transport Entrance Sensor (A/P Finisher)........................................ 2-306
12-902 Paper at H-Transport Exit Sensor....................................................................... 2-307
12-903 Paper at Compiler Exit Sensor (Finisher)............................................................ 2-308
12-905 Paper Remains at Compiler Tray Paper Sensor................................................. 2-309
12-906 Paper at H-Transport Tray Exit Sensor............................................................... 2-310
12-907 Paper at Top Tray Exit Sensor............................................................................ 2-311
12-910, 12-537 Staple Ready Sensor Fail ...................................................................... 2-312
12-916 Stapler NG .......................................................................................................... 2-314
12-920 Paper at Gate Sensor (Top Tray Job)................................................................. 2-316
12-921 Paper at Gate Sensor (Compiler Path Job) ........................................................ 2-317
12-922 Paper at Gate Sensor (Buffer Path Job) ............................................................. 2-318
12-925, 12-533, 12-574 Stacker Lower Safety Warning ................................................. 2-319
12-936 Jam at Booklet In Sensor .................................................................................... 2-319
12-935 Paper at Xport Entrance Sensor ......................................................................... 2-320
12-936 Paper Remains at Booklet Sensor A................................................................... 2-321
12-944, 12-533, 12-574 Stacker Set Over Full................................................................ 2-321
12-945, 12-525 Low Staples ........................................................................................... 2-322
12-946, 12-530 Top Tray Full ......................................................................................... 2-324
12-948 Puncher Waste Bin Nearly Full ........................................................................... 2-325
12-949, 12-529 Puncher Waste Bin Open/Reseat Punch Box........................................ 2-326
12-959, 12-533, 12-574 Full Stack was Detected ........................................................... 2-327
12-960, 12-533, 12-574 Full Stack was detected (Finisher)............................................ 2-329
12-961, 12-533, 12-574 Mix Stack was Detected ........................................................... 2-331
12-978, 12-518 Booklet Stapler NG ................................................................................ 2-332
12-983, 12-582 Booklet Tray Full was detected.............................................................. 2-334
12-984, 12-583 Booklet Low Staple F ............................................................................. 2-334
12-989, 12-584 Booklet Low Staple R............................................................................. 2-336
2 Chain 13 A/P Finisher
13-902 Paper remains at Booklet Compiler No Paper Sensor........................................ 2-339
13-903 Paper remain at Booklet Folder Roll Exit Sensor................................................ 2-339
2 Other Faults
OF 1-4 AC Input Power................................................................................................... 2-341
OF 7-1 Paper Trays......................................................................................................... 2-342
OF 10-1 No Printer Top Tray Offset................................................................................ 2-342
OF 10-16 Noise/Odor RAP.............................................................................................. 2-343
OF 12-1 Finisher Problem............................................................................................... 2-343
OF 99-3 Switch................................................................................................................ 2-344
OF 99-4 Generic Solenoid/Clutch ................................................................................... 2-344
OF 99-6 2 Wire Motor Open............................................................................................ 2-345
OF 99-7 2 Wire Motor On................................................................................................ 2-346
OF 99-8 Set Gate Solenoid Open ................................................................................... 2-346
OF 99-9 Multiple Wire Motor ........................................................................................... 2-347

March 2006
3-1
Phaser® 7760 Color Laser Printer
Image Quality
Launch
3 Image Quality
Print-Quality Problems Overview .................................................................................... 3-3
Control Panel Test Prints ................................................................................................ 3-4
Engine Test Prints........................................................................................................... 3-6
Initial Actions Before Troubleshooting............................................................................. 3-8

March 2006
2-266 Phaser® 7760 Color Laser Printer
12-261, 12-518 Booklet Knife Folding Sensor Fail
Launch
Status Indicator RAPs
Figure 1 Booklet Knife

March 2006
er® 7760 Color Laser Printer
Launch
Repairs and Adjustments
REP 12.64 Finisher Buffer Roll ....................................................................................... 4-80
REP 12.65 Finisher Bottom Buffer Chute Assembly....................................................... 4-82
REP 12.66 Finisher H-Transport Drive Belt .................................................................... 4-83
REP 12.67 Finisher Eject Chute Assembly..................................................................... 4-84
REP 12.68 Finisher PWB................................................................................................ 4-86
REP 12.69 Gear Replacement........................................................................................ 4-87
4 Covers
REP 14.1 Top Cover ....................................................................................................... 4-89
REP 14.2 Rear Cover ..................................................................................................... 4-89
REP 14.3 Right Cover..................................................................................................... 4-90
REP 14.4 Rear Left Middle Cover................................................................................... 4-90
REP 14.5 Rear Left Upper Cover.................................................................................... 4-91
REP 14.6 Left Lower Cover Assembly (Left-Hand Door B) ............................................ 4-91
REP 14.7 Front Cover Assembly .................................................................................... 4-92
REP 14.8 Fuser Cover .................................................................................................... 4-92
REP 14.9 Rear Cover (Tray Module) .............................................................................. 4-93
REP 14.10 Inner Cover ................................................................................................... 4-93
REP 14.11 Left Cover Assembly (Left-Hand Door C) ..................................................... 4-94
REP 14.12 Left Lower Cover (Left-Hand Door C)........................................................... 4-94
4 Adjustments - Xerographic/Registration
ADJ 9.1 Belt Edge Learn................................................................................................. 4-95
ADJ 9.2 ATC Sensor Setup ............................................................................................ 4-95
ADJ 9.3 TRC Adjust ........................................................................................................ 4-96
ADJ 9.4 ADC Output Check............................................................................................ 4-96
ADJ 9.5 Tone Up/Down .................................................................................................. 4-97
ADJ 9.6 Laser Power Check ........................................................................................... 4-97
ADJ 9.7 PWM Mapping Data Read................................................................................. 4-98
ADJ 9.8 Coarse RegiCon Initialization ............................................................................ 4-98
ADJ 9.9 Registration Control (RegiCon) Adjustment Overview ...................................... 4-99
ADJ 9.10 RegiCon Adjustment ....................................................................................... 4-100
ADJ 9.11 RegiCon #1 Fine Skew Adjustment................................................................. 4-101
ADJ 9.12 RegiCon #2 In/Out Skew Adjustment.............................................................. 4-102
ADJ 9.13 RegiCon #3 Center Skew Adjustment............................................................. 4-102
ADJ 9.14 RegiCon #4 Coarse Skew Adjustment ............................................................ 4-103
ADJ 9.15 Finisher Folder Position................................................................................... 4-103
4 Adjustments - Finisher
ADJ 12.2 Finisher Leveling ............................................................................................. 4-105
ADJ 12.4 Booklet Fold Skew........................................................................................... 4-106
ADJ 12.5 Booklet Fold Position....................................................................................... 4-107
ADJ 12.6 Booklet Staple Position (Staple on Fold)......................................................... 4-109
ADJ 12.7 Booklet Staple Alignment ................................................................................ 4-110
ADJ 12.8 Finisher Booklet Wrinkle.................................................................................. 4-111
ADJ 12.9 Booklet Fold Position (Fine Adjustment) ......................................................... 4-113
ADJ 12.10 Booklet Staple Position (Staple on Fold Fine Adjustment) ............................ 4-114

March 2006
5-1
Pha
Parts List
Launch
5 Overview
Introduction ..................................................................................................................... 5-3
Subsystem Information ................................................................................................... 5-3
Parts Lists
Drives
PL 1.1 Drive Unit ............................................................................................................. 5-5
PL 1.2 Main Drive Motor Assembly................................................................................. 5-6
PL 1.3 IBT Steering Motor and MOB Sensor .................................................................. 5-7
Paper Transportation
PL 2.1 Tray 2...................................................................................................................5-8
PL 2.3 Tray 2 Feeder and Left Lower Cover Assembly (Left Hand Door B Assembly) .. 5-9
PL 2.4 Tray 2 Feeder: 1 of 2 ........................................................................................... 5-10
PL 2.5 Tray 2 Feeder: 2 of 2 ........................................................................................... 5-11
PL 2.6 Registration Transport ......................................................................................... 5-12
PL 2.7 Left Cover Unit (Left Hand Door A)...................................................................... 5-13
PL 2.8 Left Cover Assembly (Left Hand Door A): 1 of 2 ................................................. 5-14
PL 2.9 Left Cover Assembly: 2 of 2................................................................................. 5-15
PL 2.10 Exit Transport Assembly.................................................................................... 5-16
PL 2.11 Tray 1 (MPT): 1 of 2........................................................................................... 5-17
PL 2.12 Tray 1: 2 of 2...................................................................................................... 5-18
PL 2.13 Tray 1 (MPT) Feed Assembly............................................................................ 5-19
ROS
PL 3.1 ROS Assembly .................................................................................................... 5-20
Xerographics
PL 4.1 Xerographic Module: 1 of 2.................................................................................. 5-21
PL 4.2 Xerographic Module: 2 of 2.................................................................................. 5-22
Transfer
PL 5.1 Lift Unit................................................................................................................. 5-23
PL 5.2 IBT Unit................................................................................................................ 5-24
PL 5.3 IBT Belt Assembly (Accumulator Belt Assembly) ................................................ 5-25
PL 5.6 IBT Elevator ......................................................................................................... 5-26
Development
PL 6.1 Developer Unit: 1 of 2 .......................................................................................... 5-27
PL 6.2 Developer Unit: 2 of 2 .......................................................................................... 5-28
Fuser
PL 7.1 Fuser Assembly ................................................................................................... 5-29
Air System
PL 8.1 Air System ........................................................................................................... 5-30
Electrical Components
PL 9.1 Electrical Components: 1 of 3.............................................................................. 5-31
PL 9.2 Electrical Components: 2 of 3.............................................................................. 5-32
PL 9.3 Electrical Components: 3 of 3.............................................................................. 5-33
Covers
PL 10.1 Front Cover........................................................................................................ 5-34
PL 10.2 Top Covers and Inner Covers............................................................................ 5-35
PL 10.3 Rear Cover......................................................................................................... 5-36
Inverter
PL 11.1 Inverter Transport .............................................................................................. 5-37
Duplex Transport
PL 12.1 Duplex Transport Assembly: 1 of 2.................................................................... 5-38
IOT Control Chassis
PL 13.1 IOT Control Chassis Assembly.......................................................................... 5-39
1T 3T Modules
PL 15.1 Tray 3/4/5 Feeders & Paper Trays..................................................................... 5-40
PL 15.3 Tray 3 Feeder: 1 of 2 ......................................................................................... 5-41
PL 15.4 Tray 3 Feeder: 2 of 2 ......................................................................................... 5-42
PL 15.5 Tray 4 Feeder: 1 of 2 ......................................................................................... 5-43
PL 15.6 Tray 4 Feeder: 2 of 2 ......................................................................................... 5-44
PL 15.7 Tray 5 Feeder: 1 of 2 ......................................................................................... 5-45
PL 15.8 Tray 5 Feeder: 2 of 2 ......................................................................................... 5-46
PL 15.9 Electrical Components and Casters................................................................... 5-47
PL 15.10 Left Cover Assembly........................................................................................ 5-48
PL 15.11 Covers.............................................................................................................. 5-49
Tray Module - TT
PL 16.1 Tray 3/4/5 Assembly .......................................................................................... 5-50
PL 16.3 Tray 4................................................................................................................. 5-51
PL 16.4 Tray 5................................................................................................................. 5-52
PL 16.5 Paper Feeder: 1 of 2 .......................................................................................... 5-53
PL 16.6 Paper Feeder: 2 of 2 .......................................................................................... 5-54
PL 16.7 Tray 3 Feeder .................................................................................................... 5-55
PL 16.11 Tray 5 Feeder .................................................................................................. 5-56
PL 16.13 Left Cover Assembly (Left Hand Door C) ........................................................ 5-57
PL 16.14 Tray 4/5 Lift Gear Assembly ............................................................................ 5-58
PL 16.15 Electrical Components and Casters................................................................. 5-59
PL 16.16 Covers.............................................................................................................. 5-60
A/P Finisher
PL 21.1 A/P Finisher ....................................................................................................... 5-61
PL 21.2 Finisher Cover: 1 of 2......................................................................................... 5-62
PL 21.3 Finisher Cover: 2 of 2......................................................................................... 5-63
PL 21.4 Finisher Stack .................................................................................................... 5-64
PL 21.5 Finisher Punch................................................................................................... 5-65
PL 21.6 Finisher Stapler.................................................................................................. 5-66
PL 21.7 Finisher Eject: 1 of 3 .......................................................................................... 5-67
PL 21.8 Finisher Eject: 2 of 3 .......................................................................................... 5-68
PL 21.9 Finisher Eject: 3 of 3 .......................................................................................... 5-69
PL 21.10 Finisher Transport: 1 of 2................................................................................. 5-70
PL 21.11 Finisher Transport: 2 of 2................................................................................. 5-71
PL 21.12 Finisher Electrical............................................................................................. 5-72
PL 21.13 Finisher Harness.............................................................................................. 5-73
PL 21.15 Booklet Accessory ........................................................................................... 5-74
PL 21.16 Booklet Component - 1 .................................................................................... 5-75

March 2006
5-2 Phaser® 7760 Color Laser Printer
Launch
Parts List
PL 21.17 Booklet Component -2 (End Guide)................................................................. 5-76
PL 21.18 Booklet Component -3 ..................................................................................... 5-77
PL 21.19 Booklet Component -4 ..................................................................................... 5-78
PL 21.20 Booklet Component -5 ..................................................................................... 5-79
PL 21.21 Booklet Component -6 (Chute) ........................................................................ 5-80
PL 21.22 Booklet Component -7 ..................................................................................... 5-81
PL 21.23 Booklet Tray Component ................................................................................. 5-82
PL 21.24 H - Transport: 1 of 4......................................................................................... 5-83
PL 21.25 H - Transport: 2 of 4......................................................................................... 5-84
PL 21.26 H - Transport: 3 of 4......................................................................................... 5-85
PL 21.27 H - Transport: 4 of 4......................................................................................... 5-86
Common Hardware
Common Hardware ......................................................................................................... 5-87
Kit Part Number............................................................................................................... 5-88
Part Number Index .......................................................................................................... 5-88

March 2006
6-1
Phaser® 7760 Color Laser Printer
General Troubleshooting Procedures
Launch
6 Control Panel Diagnostics
Introduction ..................................................................................................................... 6-3
Diagnostic Fault History .................................................................................................. 6-3
Control Panel Diagnostics............................................................................................... 6-5
Control Panel Troubleshooting........................................................................................ 6-18
Inoperable Printer............................................................................................................ 6-19
Power Supplies and Interlocks........................................................................................ 6-19
Media Jams and the Paper Path ..................................................................................... 6-22
Operating System and Application Problems.................................................................. 6-23
6 Diagnostics Procedures
Date and Time................................................................................................................. 6-27
Supplies Usage ............................................................................................................... 6-27
Resetting NVRAM ........................................................................................................... 6-31
Store Engine NVRAM ..................................................................................................... 6-32
Clear Tech Rep Faults .................................................................................................... 6-32
Printer Status Page......................................................................................................... 6-33
Configuration Page ......................................................................................................... 6-33
Printer Configuration ....................................................................................................... 6-34
Engine ROM Version ...................................................................................................... 6-34
Test Prints ....................................................................................................................... 6-35
Reflective Sensor Procedure .......................................................................................... 6-36
Transmissive Sensor Procedure ..................................................................................... 6-37
Developer BIAS............................................................................................................... 6-38
Enable Metered Toner .................................................................................................... 6-39
6 General Procedures
System Startup and POST.............................................................................................. 6-41
Power On Self Test (POST)............................................................................................ 6-41
POST Faults.................................................................................................................... 6-42
Network Diagnostics ....................................................................................................... 6-43
Intermittent Problem........................................................................................................ 6-43
Back Channel Traces ...................................................................................................... 6-45
6 Change Tag Information
Finisher (F) Tags............................................................................................................. 6-49

March 2006
7-1
Phaser® 7760 Color Laser Printer
Wiring Data
Launch
7 Printer Plug/Jack Locations
Printer Plug/Jack Locations............................................................................................. 7-3
7 Finisher Plug/Jack Locations
Finisher Plug/Jack Locations .......................................................................................... 7-39
7 Wirenets
AC Wirenets .................................................................................................................... 7-53
+3.3 VDC / +3.3 VDC Wirenets....................................................................................... 7-55
+5 VDC Wirenets ............................................................................................................ 7-57
+5 VDC RTN Wirenets .................................................................................................... 7-61
+24 VDC Wirenets .......................................................................................................... 7-65
+24 VDC RTN Wirenets .................................................................................................. 7-69
Finisher Wirenets ............................................................................................................ 7-71
7 BSDs
Chain 01 Main Power ..................................................................................................... 7-81
Chain 03 Printer Communication ................................................................................... 7-90
Chain 04 Print Power ...................................................................................................... 7-91
Chain 06 Imaging ............................................................................................................ 7-93
Chain 07 Paper Supply ................................................................................................... 7-104
Chain 08 Paper Registration ........................................................................................... 7-119
Chain 09 Xerographics.................................................................................................... 7-125
Chain 10 Fusing and Output .......................................................................................... 7-156
Chain 12 Finishers .......................................................................................................... 7-164
Chain 13 References - Block Schematics and Wiring Schematics ................................. 7-195

March 2006
8-1
Phaser® 7760 Color La
Theory of Operation
Launch
8 Theory of Operation
Phaser 7760 Print Process ............................................................................................. 8-3
Operational Overview...................................................................................................... 8-4
EAHG Toner.................................................................................................................... 8-11
Technology Overview...................................................................................................... 8-11
ROS and Regicon Technology Overview........................................................................ 8-13
RegiCon Overview .......................................................................................................... 8-15
Sensors ........................................................................................................................... 8-17
Advanced Finisher .......................................................................................................... 8-21
Professional Finisher....................................................................................................... 8-35

Copyright © 2004 Xerox Corporation. All rights reserved. XEROX®, the stylized X®, and Phaser®
trademarks of Xerox Corporation in the United States and/or other countries.
1 of 1
Date Issued: 11 Jan 2007
SF 224
Product: Phaser 7760
Operational Groups: All
PROBLEM:
The Phaser 7760 no longer recognizes the Imaging Units as the correct
ones for the product after the Engine NVRAM board (MCU-MF NVM
PWB, P/N 160K76652) is changed.
If the Store Engine NVRAM function is not performed before replacing
the Engine NVRAM Board, the correct parameter for recognizing Phaser
7760 Imaging Units will be lost.
CAUSE:
The Engine NVRAM Board is a common part used in many different
products. In order to function correctly in a particular product, a
number of parameters must be programmed. One of these parameters is
the unique code that recognizes the Imaging Units specifically
designated for that product. These codes are programmed to the Engine
NVRAM Board during production. In order to be written correctly to a
replacement NVRAM board, the Store Engine NVRAM and Resetting
NVRAM procedures within diagnostics should be followed.
SOLUTION:
If the Phaser 7760 Image Unit are no longer correctly recognized after
replacing the Engine NVRAM Board and the Resetting NVRAM
procedure within diagnostics does not restore this functionality;
1. Send the Image Unit ID postscript snippet to the printer.
a. This snippet can be downloaded from:
http://www.office.xerox.com/
b. Select Drivers and Utilities and enter 7760 in the product
name field.
c. If necessary, instructions for Downloading Firmware
Update Files can be obtained on the same web page.
2. Verify that the printer recognizes the Image Units correctly after
the snippet has been downloaded.
3. Perform the Store Engine NVRAM procedure in diagnostics.
Complete the part’s green card and include it with each part returned
North America: Return replaced parts to the logistics center named o
the shipping box’s pre-printed return shipping label.
Outside North America: Return parts as per your normal channels.
PART INVENTORY STRATEGY
N/A.
JAB
S
ERVICE
FLASH