Error Messages and Codes 3-75
Generic Fan Failure
Code 52: This is a generic fan error, generated by the Rear Fan or the Fuser Fan
circuit.
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack Map References
Fuser Fan, PL 1.1.7 “Main Wiring Diagram” on page 10-15
Rear Fan, PL 12.1.2 “Drive Section” on page 10-18
Troubleshooting Procedure Table
Steps Actions and Questions Yes No
1
Check the following for evidence of fault
or damage:
Rear Fan, PL 12.1.2
Fuser Fan, PL 1.1.7
Replace the
defective fan.
Go to Step 3.
2
Does problem recur following part
replacement?
Go to Step 3 Complete
3
Isolate the problem fan by running service
diagnostics testing both the Rear Fan and
Fuser Fan.
Did one of the fans fail?
Go to the
troubleshooting
procedure for the
specific fan.
If both fans pass
diagnostics
replace the
Engine Control
Board,
page 8-107.
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