Phaser 6121MFP Service Manual 3-81
Error Messages and Codes
0650 Scanner Home Failure
Possible causes:
• A low motor lock signal is not detected even after the lapse of a
predetermined period of time after the Polygon Motor has been started.
• The motor lock signal remains HIGH for a predetermined consecutive period
of time while the Polygon Motor remains energized.
Initial Actions
Power down and reboot the printer.
Procedure
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack References
■ Engine Control Board, PL13.0.20
■ Image Processor Board, PL2.0.4
■ Board Locations (page 2-10)
Troubleshooting Procedure Table
Step Action and Questions Yes No
1 Check connector P/J2 on the Image
Processor Board.
Is the connector seated properly?
Go to step 2. Reseat the
connector. If
the problem
persists, go to
step 2.
2 Replace the Scanner (page 8-31).
Does the problem persist?
Go to step 3. Complete.
3 Replace the Engine Control Board
(page 8-59).
Does the problem persist?
Go to step 4. Complete.
4 Replace the Power Supply (page 8-72). Complete.
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