No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
390 D
TD sensor error 2
The TD sensor outputs less than 0.5V or more than 4.0V 10 times consecutively
during copying.
Note: If the fax option is installed, this SC is issued immediately.
If the fax option is not installed, this SC is issued after the prescribed number of
pages is copied.
• TD sensor abnormal
•
Poor connection of the PCU
1.
Replace the TD sensor.
2. Replace the harness of PCU.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
391 D
Development bias leak
The PWM output level was detected higher than 50% after 10 consecutive
samplings.
• High voltage power supply board (power pack) harness loose, broken.
• PCU connection loose or broken
1.
Replace the harness of the high voltage power supply board (power pack).
2. Replace the harness of the PCU.
Service Call Conditions
55
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