Error Messages and Codes 3-71
Fuser Fan Failure
The Fuser Fan rotation signal indicates to the Engine Control Board that the fan is no
longer operational.
Applicable Status Code:
Code 50: Fuser Fan Failure
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack References
■ Fuser Fan, PL5.3.31
■ FAN/PHD/MOT Harness, PL10.1.9
■ Engine Control Board, PL9.1.16
■ Print Engine Map 1 - P/J Locator (page 10-5)
■ Print Engine Drive Wiring (page 10-19)
Troubleshooting Procedure Table
Step Actions and Questions Yes No
1
Check the Fuser Fan for damage.
Remove the Front Cover.
Is the fan damaged?
Replace the Fuser
Fan (
page 8-66).
Go to Step 2.
2
Check the Fuser Fan connection.
Is P/J482 connected to the harness?
Go to Step 2. Reconnect the
Fan.
3
Check orientation of the Fuser Fan.
Does the Fan’s label face into the chute?
Go to Step 3. Correct the
installation.
4
Test the Fuser Fan.
Run the Service Diagnostics Fuser Fan
test.
Does the Fan operate.
Go to Step 6. Go to Step 5.
5
Check all pins on the FAN/PHD/MOT
Harness PL10.1.9 for continuity.
1. Disconnect P/J48 and P/J482.
2. Check continuity between J48 <=>
P483.
Go to Step 5. Replace the
FAN/PHD/MOT
Harness.
6
Check the fan rotation signal.
Print one sheet.
Is there +3.3 V across P/J48-A12 <=>
P/J48-A13?
Replace the Engine
Control Board
(
page 8-104).
Replace the Fuser
Fan (
page 8-66).
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