Imaging Unit Motor Overheating Failure
Error Codes that Apply
321
Initial Troubleshooting Actions to Take
1. Ensure that the temperature and installation clearances of the printer are at specifications.
2. Clean all fan ducts.
3. Turn the printer off and allow a minimum of 30 minutes for cooling.
4. Restart the printer.
5. If the problem persists follow the procedure below.
Parts of the Printer that Apply
1. Imaging Unit Motors
2. Motor Driver Board
Troubleshooting Procedure
Steps Action Taken Yes No
1
Test the cooling fans for proper
operation and adequate airflow.
Run the Motor Clutch Fan tests.
Do the fans operate correctly?
Go to Step 2.
Replace the defective
fan.
2
Test the Imaging Unit Motors.
Run the Service Diagnostics Imaging
Unit Motor tests.
Do the motors operate correctly?
Replace the Motor
Driver Board
Replace the
defective motor
3
Does this resolve the issue?
Complete
Replace the Engine
Board
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