Diagnostic information
2-19
5061
122.02 error code service check
Hot fuser
Error code 122.02 displays whenever the printer detects a problem with the fuser running over temperature or
the fuser lamps have been on too long. A problem could exist in the fuser assembly with the hot roll bearings,
hot roll thermistor, or other hot roll parts. The LVPS or system board assembly can also be failing.
122.03 error code service check
Hot roll thermistor circuit is open
If error code 122.03 displays, the printer detects a problem in the fuser hot roll, fuser hot roll thermistor, system
board, or LVPS fuser control circuits.
Step
Actions and questions
Yes
No
1
Open the right fuser access door. Observe the fuser,
and see if the hot roll fuser lamp turns on and off. You
may have to observe for a few minutes.
Do the lamps turn off and on?
Go to step 2
Replace the
LVPS assembly.
See
“LVPS
assembly
removal” on
page 4-53
.
2
Turn the printer on, and measure the voltage on
connector J17-11 on the system board. The voltage
should measure approxi0.13 V dc to
+0.64 V dc as the hot roll lamp turns on and off.
Is the voltage correct?
Replace the fuser
assembly. See
“Fuser
assembly
removal” on
page 4-44
.
Replace the
system board.
See
“System
board removal”
on page 4-90
.
Step
Actions and questions
Yes
No
1
Turn the printer on, and allow it to reach the Ready
prompt.
Note:
The printer may not complete POR and post a
122.03 Error message.
Measure the voltage on connector J17-6 on the system
board. The voltage should measure approximately
+3.3 V dc.
Is the voltage correct?
Go to step 2
Replace the
system board.
See
“System
board removal”
on page 4-90
.
2
Measure the voltage on the fuser DC control connector
on the LVPS. Measure the voltage on pin 6 of the
connector.
Does the voltage measure approxi3.3 V dc?
Replace the fuser
assembly. See
“Fuser
assembly
removal” on
page 4-44
.
Replace the
LVPS assembly.
See
“LVPS
assembly
removal” on
page 4-53
.
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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