Error Messages, Codes, and Procedures 3-23
Main Motor Failure
The Main Motor stopped or didn’t start on time.
Applicable Error Codes
Main Motor Failure - U0-1 Main Motor Stop
Main Motor Failure - U1-1 Main Motor Rotation
Main Motor Troubleshooting Reference
Applicable Parts References
■ Motor Assembly
■ Engine Logic Board
■ Print Engine P/J Electrical (page 10-12)
■ Print Engine Drive/Crum Wiring (page 10-25)
■ PL7.1 Print Engine Drive (page 9-38)
■ PL8.1 Print Engine Electrical (page 9-40)
Main Motor Troubleshooting Procedure
Step Actions and Questions Yes No
1
Check the Motor Assembly installation.
Remove the Upper Rear Cover
(
page 8-15).
Is the Motor Assembly installed
correctly?
Go to Step 2. Correct the
installation.
2
Test Motor Assembly operation.
Run the Service Diagnostics Main Motor
test.
Does the motor run?
Go to Step 6. Go to Step 3.
3
Check the Motor Assembly connection.
Are P/J214 and P/J408 connected?
Go to Step 4. Connect P/J214
and P/J408.
4
Check continuity between the Motor
Assembly and Engine Logic Board.
Does each wire conduct between P/
J214 <=> P/J408?
Go to Step 5. Repair the wiring.
5
Check for +24 V to the Motor Assembly.
Is there +24 V across P/J214-1/-2 (+) <=>
ground?
Replace the Motor
Assembly
(
page 8-84).
Replace the
Engine Logic
Board
(
page 8-89).
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