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E021-0003-05
Detection Description
Remedy
E021-0120-05
Detection Description
Remedy
E021-0220-05
Detection Description
Remedy
Developing Motor error
There was no FG signal input for 300 msec from the startup of the Developing Motor.
[Related parts] R1.00
- Harness between the Developing Motor (M03/J5703) and the DC Controller PCB (UN04/J142)
- Fuse in the DC Controller PCB (UN04/FU4)
- Developing Motor (M03)
- Main Drive Unit
- DC Controller PCB (UN04)
[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 DC Controller PCB using a tester.
a. If the measurement value is less than 1 ohm (conduction state),
1. Replace the Developing Motor.
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 (approx. 2
min) 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
Developing Screw rotation detection error (Y)
The difference between the maximum and the minimum of sampling values detected by the ATR
Sensor (Y) in the Drum Unit (Y) was 0.5 V or less.
[Related parts] R1.00
- Harness between the Drum Unit Relay PCB (Y) (UN08/J6001) and the DC Controller PCB (UN04/
J160)
- Drum Unit Relay PCB (Y) (UN08)
- Drum Unit Memory PCB (Y) (UN12)
- Drum Unit (Y)
- DC Controller PCB (UN04)
- Main Drive Unit
[Remedy] Perform the following in the order while checking whether the error is cleared.
1. If the Drum Unit Memory PCB (Y) is soiled, clean it with a blower.
2. Check/replace the related harness/cable, connector and parts.
[Reference] Before replacing the DC Controller PCB, back up the service mode data (approx. 2
min) 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
Developing Screw rotation detection error (M)
The difference between the maximum and the minimum of sampling values detected by the ATR
Sensor (M) in the Drum Unit (M) was 0.5 V or less.
[Related parts] R1.00
- Harness between the Drum Unit Relay PCB (M) (UN09/J6002) and the DC Controller PCB (UN04/
J160)
- Drum Unit Relay PCB (M) (UN09)
- Drum Unit Memory PCB (M) (UN13)
- Drum Unit (M)
- DC Controller PCB (UN04)
- Main Drive Unit
[Remedy] Perform the following in the order while checking whether the error is cleared.
1. If the Drum Unit Memory PCB (M) is soiled, clean it with a blower.
2. Check/replace the related harness/cable, connector and parts.
[Reference] Before replacing the DC Controller PCB, back up the service mode data (approx. 2
min) 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
407
7. Error/Jam/Alarm
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Troubleshooting
