E021-0001-05 Developing Motor error
Detection Description It did not become the specified speed although 0.8 sec have passed from the startup of the
Developing Motor.
Remedy
[Related parts]
- Main Drive Unit
- Harness between the Developing Motor and the DC Controller PCB
- Power Supply Unit
- Developing Motor (M10)
- DC Controller PCB
[Remedy] Perform the following in the order while checking whether the error is cleared.
1. Check whether the gears of the Main Drive Unit can be rotated by hand.
a. If they cannot be rotated, replace the Main Drive Unit.
b. If they can be rotated, check the harness between the Developing Motor and the DC Controller
PCB.
2. Measure the both ends of the fuse in the Low Voltage Power Supply Unit using a tester.
a. If the measurement value is less than 1 ohm (conduction state),
a-1. Replace the Bk Drum_ITB Motor.
a-2. Replace the DC Controller PCB.
b. If the measurement value is 1 ohm or higher (non-conduction state), replace the DC Controller
PCB.
[Reference] Before replacing the DC Controller PCB, back up the service mode data and restore
the backup data after the replacement so the data may be able to be protected.
- Backup: COPIER (LEVEL2)> FUNCTION> SYSTEM> DSRAMBUP
- Restoration: COPIER (LEVEL2)> FUNCTION> SYSTEM> DSRAMRES
E021-0002-05 Developing Motor error
Detection Description The specified speed could not be maintained although it became the specified speed at least once
from the startup of the Developing Motor.
Remedy
[Related parts]
- Main Drive Unit
- Harness between the Developing Motor (M10) and the DC Controller PCB
- Power Supply Unit
- Developing Motor (M10)
- DC Controller PCB
[Remedy] Perform the following in the order while checking whether the error is cleared.
1. Check whether the gears of the Main Drive Unit can be rotated by hand.
a. If they cannot be rotated, replace the Main Drive Unit.
b. If they can be rotated, check the harness between the Developing Motor and the DC Controller
PCB.
2. Measure the both ends of the fuse in the Low Voltage Power Supply Unit using a tester.
a. If the measurement value is less than 1 ohm (conduction state),
a-1. Replace the Bk Drum_ITB Motor.
a-2. Replace the DC Controller PCB.
b. If the measurement value is 1 ohm or higher (non-conduction state), replace the DC Controller
PCB.
[Reference] Before replacing the DC Controller PCB, back up the service mode data and restore
the backup data after the replacement so the data may be able to be protected.
- Backup: COPIER (LEVEL2)> FUNCTION> SYSTEM> DSRAMBUP
- Restoration: COPIER (LEVEL2)> FUNCTION> SYSTEM> DSRAMRES
7. Error/Jam/Alarm
351