Appendix: Troubleshooting Guide
24
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.
SC 4xx (Image Transfer and Transfer Error)
ITB (Image Transfer Belt) Unit: Home Position Error
The ITB contact sensor does not detect the home position of the ITB for 5
seconds after the ITB unit initialization has been done.
ITB (Image Transfer Belt) Unit: Contact Position Error
The ITB contact sensor does not detect the contact position of the ITB for 5
seconds after the ITB unit has moved to the contact position.
ITB (Image Transfer Belt) Unit: No-contact Position Error
The ITB contact sensor does not detect the home position of the ITB for 5
seconds after the ITB unit has moved to no-contact position.
445
Defective ITB contact motor
Defective ITB contact sensor
Defective ITB unit
1. Replace the ITB contact motor.
2. Replace the ITB contact sensor.
3. Replace the ITB unit.
Agitator Motor Error
480
The agitator motor error is detected twice for 10 msec during the initialization at