E021-0120-05 Developing Screw rotation detection error (Y)
Detection Description The difference between the maximum and the minimum of sampling values detected by the Toner
Density Sensor (Y) in the Developing Unit (Y) was 12 V or less during rotation of the Developing
Screw.
Remedy
[Related parts]
- Developing Unit (Y)
- DC Controller PCB
- Main Drive Unit
- Harness between the Developing Unit (Y) and the DC Controller PCB
[Remedy] Perform the following in the order while checking whether the error is cleared.
1. Check the disconnection of the Developing Unit (Y) Harness/Connector.
2. Remove the Developing Unit and check if you can rotate the coupling of the Developing Unit by
hand. If it is too heavy to rotate, replace the Developing Unit.
3. Replace the Main Drive Unit.
4. 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
E021-0220-05 Developing Screw rotation detection error (M)
Detection Description The difference between the maximum and the minimum of sampling values detected by the Toner
Density Sensor (M) in the Developing Unit (M) was 12 V or less during rotation of the Developing
Screw.
Remedy
[Related parts]
- Developing Unit (M)
- DC Controller PCB
- Main Drive Unit
- Harness between the Developing Unit (M) and the DC Controller PCB
[Remedy] Perform the following in the order while checking whether the error is cleared.
1. Check the disconnection of the Developing Unit (M) Harness/Connector.
2. Remove the Developing Unit and check if you can rotate the coupling of the Developing Unit by
hand. If it is too heavy to rotate, replace the Developing Unit.
3. Replace the Main Drive Unit.
4. 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
E021-0320-05 Developing Screw rotation detection error (C)
Detection Description The difference between the maximum and the minimum of sampling values detected by the Toner
Density Sensor (C) in the Developing Unit (C) was 12 V or less during rotation of the Developing
Screw.
Remedy
[Related parts]
- Developing Unit (C) [0322-0000]
- DC Controller PCB
- Main Drive Unit
- Harness between the Developing Unit (C) and the DC Controller PCB
[Remedy] Perform the following in the order while checking whether the error is cleared.
1. Check the disconnection of the Developing Unit (C) Harness/Connector.
2. Remove the Developing Unit (C) and check if you can rotate the coupling of the Developing Unit
(C) by hand. If it is too heavy to rotate, replace the Developing Unit (C).
3. Replace the Main Drive Unit.
4. 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
352
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