Service Call Conditions
SM Appendix 3-9 M018/M019
Appendix:
Trouble-
Shooting
Guide
SC 3xx (Charge Error)
High voltage power output error
The measured voltage is not correct when the EGB measures each charge output
(charge, development, image transfer belt unit, and transfer unit).
300
Disconnected or defective high voltage harness
Defective high voltage power supply
Defective EGB
1. Check or replace the harnesses.
2. Replace the high voltage power supply board
3. Replace the EGB.
Black drum motor error
The LOCK signal error is detected when the EGB monitors the black drum motor
state. (This monitoring is done immediately after power-on, when the motor starts
rotating, and immediately after the motor stops.)
396
Disconnected or defective motor harness.
Motor slips due to excessive load
1. Check the harness from the black drum motor. Replace it if necessary.
Color drum motor error
The LOCK signal error is detected when the EGB monitors the color drum motor
state. (This monitoring is done immediately after power-on, when the motor starts
rotating, and immediately after the motor stops.)
397
Disconnected or defective motor harness.
Motor slips due to excessive load
1. Check the harness from the color drum motor. Replace it if necessary.
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