Diagnostic information
2-57
5061
927.03 error code service check
RIP fan
930.09 error code service check
LVPS
This problem with the fuser circuits is usually the zero crossover signal from the LVPS not working correctly.
Step
Actions and questions
Yes
No
1
Turn the power off, manually spin the fan, and check
that it rotates freely.
Does the fan rotate freely?
Go to step 2
Replace the RIP
fan. See
“RIP
fan removal” on
page 4-87
.
2
Check the RIP fan cable connection to the system
board JR1 for correct installation.
Is the cable installed correctly?
Go to step 3
Install the cable
correctly.
3
Disconnect the RIP fan from JR1 on the system board,
and check the voltages on JR1.
Are the voltages correct?
Replace the RIP
fan. See
“RIP
fan removal” on
page 4-87
.
Replace the
system board.
See
“System
board removal”
on page 4-90
.
Step
Actions and questions
Yes
No
1
LVPS cable—check the LVPS cable to J17 on the
system board to make sure it is seated correctly. Go to
“System board” on page 5-8
.
Is the cable seated correctly?
Go to step 2
Install the cable
correctly.
2
Voltage checks—Disconnect JCVR1 from the system
board assembly. Go to
“System board” on page 5-8
.
Check the voltage at J17, on the cable. It measures
approxi3.7 V dc.
Is the voltage correct?
Go to step 3
Replace the
following FRUs in
order:
1. LVPS
assembly.
See
“LVPS
assembly
removal” on
page 4-53
.
2. System
board. See
“System
board
removal” on
page 4-90
.
Pin
Fan on
Fan off
Fan
disconnected
Fan switch on
Fan
disconnected
Fan switch off
JR1-1
+1.6 V dc
+3.3 V dc
+3.3 V dc
+3.3 V dc
JR1-2
0 V
0 V
0 V
0 V
JR1-3
+1.9 V dc
0 V dc
0 V
+2 V dc
JR1-4
+24 V dc
+24 V dc
+24 V dc
+24 V dc
Summary of Contents for C77X
Page 15: ...Notices and safety information xv 5061...
Page 16: ...xvi Service Manual 5061...
Page 22: ...xxii Service Manual 5061...
Page 44: ...1 22 Service Manual 5061...
Page 182: ...2 138 Service Manual 5061...
Page 293: ...Repair information 4 61 5061 6 Release the MPF latch F and remove the MPF...
Page 325: ...Repair information 4 93 5061 3 Remove all connectors C 4 Remove the transfer HVPS board...
Page 338: ...4 106 Service Manual 5061...
Page 339: ...Connector locations 5 1 5061 5 Connector locations Locations Printer boards...
Page 340: ...5 2 Service Manual 5061 Printer motors...
Page 341: ...Connector locations 5 3 5061 Printer sensors...
Page 342: ...5 4 Service Manual 5061 Cartridge contact assembly pin locations cyan magenta and yellow...
Page 343: ...Connector locations 5 5 5061 Cartridge contact assembly pin locations black...
Page 345: ...Connector locations 5 7 5061 Connectors System board...
Page 358: ...5 20 Service Manual 5061 Transfer high voltage power supply HVPS...
Page 368: ...5 30 Service Manual 5061...
Page 372: ...6 4 Service Manual 5061...
Page 380: ...7 8 Service Manual 5061 Assembly 3 1 Fuser web oiler 1 3 2...
Page 402: ...7 30 Service Manual 5061 Assembly 22 Electronics 3 3 3 2 1...
Page 404: ...7 32 Service Manual 5061 Assembly 22 1 Electronics 3 5 4 8 1 9 10 2 2 6 6 6 7 6 6...
Page 408: ...7 36 Service Manual 5061 Assembly 23 Electronics cabling interconnections 1...
Page 410: ...7 38 Service Manual 5061 Assembly 24 Electronics cabling interconnections 2...
Page 420: ...7 48 Service Manual 5061 Assembly 28 1 5 Bin mailbox 3 3 3 3 11 7 13 5 9 2 10 6 4 12 8 14 1 15...
Page 422: ...7 50 Service Manual 5061 Assembly 29 500 Sheet drawer option 3 11 7 5 9 2 10 6 4 8 1...
Page 438: ...7 66 Service Manual 5061 Assembly 33 Envelope option 2 1...
Page 442: ...7 70 Service Manual 5061 Assembly 36 Options...
Page 444: ...7 72 Service Manual 5061...
Page 450: ...B 2 Service Manual 5061 Print Quality Pages Page 1 total of five...
Page 451: ...Appendix B Print quality samples B 3 5061 Print Quality Pages Page 2 total of five...
Page 452: ...B 4 Service Manual 5061 Print Quality Pages Page 3 total of five...
Page 453: ...Appendix B Print quality samples B 5 5061 Print Quality Pages Page 4 total of five...
Page 458: ...B 10 Service Manual 5061...
Page 466: ...I 8 Service Manual 5061...
Page 476: ...I 18 Service Manual 5061...
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