3-74 Phaser 6250 Color Laser Printer Service Manual
Rear Fan Failure
Code 51
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack Map References
Rear Fan, PL 12.1.2 “Main Wiring Diagram” on page 10-15
Low-Voltage Power Supply, PL 12.1.10
Troubleshooting Procedure Table
Steps Actions and Questions Yes No
1
Check the Rear Fan for evidence of fault
or damage.
Replace the Rear
Fan, page 8-102.
Go to Step 2.
2
Does an error occur after the Rear Fan is
replaced?
Go to Step 3. Complete
3
Replace the Low-Voltage Power Supply
Board, page 8-99.
Does the error recur after the LVPS is
replaced?
Go to Step 4. Complete
4
Troubleshoot using the wiring diagram
“Main Wiring Diagram” on page 10-15.
Replace any defective parts.
Does the printer function correctly after
replacing any defective parts?
Complete Replace the
Engine Control
Board,
page 8-107.
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