Xerox Phaser 4510 - Engine Logic Board NVRAM Failure

Phaser 4500/4510 Service Manual 3-33
Error Messages and Codes
Engine Logic Board NVRAM Failure
Diagnostic Error Code
U6: NVM Fail
Troubleshooting Reference
Applicable Parts Wiring and Plug/Jack Map References
■ HVPS/engine logic board ■ “P4500: 24 V Interlock, Rear Cover Switch,
Main Motor, Sub Fan, Exit Motor Assembly” on
page 10-21
■ “Print Engine Wiring Diagrams” on page 10-19
■ “Print Engine Plug/Jack Locator” on page 10-3
Troubleshooting Procedure
Steps Actions and Questions Yes No
1 Does the error occur when the power
is turned ON?
Go to step 4. Go to step 2.
2 Turn the power OFF and ON again.
Does the error still occur?
Go to step 4. Go to step 3.
3 Cycle the power OFF, then ON several
times.
Does the error still occur?
Go to step 4. Problem solved.
4 Replace the HVPS/engine logic board.
(page 8-73)
Does the error occur?
Go to “Electrical
Noise” on
page 4-37.
Problem solved.