Canon imageRUNNER ADVANCE 4551i Service Manual page 405

197-0003-05
Detection Description
Remedy
197-1004-05
Detection Description
Remedy
197-2000-05
Detection Description
Remedy
197-2001-05
Detection Description
Remedy
The connector of the laser scanner unit is disconnected.
The connector of the laser scanner unit is disconnected.
[Related parts]
- Harness connecting from the DC Controller PCB (UN2/J324,J9324) to the Laser Scanner Unit
(J745/J744/J9744/J602/J9602)
- Laser Scanner Unit
- DC Controller PCB (UN2)
[Remedy]
1.Check/replace the related harness/cable, connector and parts.
2.Replace the Laser Scanner Unit.
3.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
High Voltage PCB disconnection
High Voltage PCB disconnection detection
[Related parts]
- Harness connecting from the DC Controller PCB (UN2/J323) to the HVT PCB (UN6/J401)
- HVT PCB (UN6)
- DC Controller PCB (UN2)
[Remedy]
1.Check/replace the related harness/cable, connector and parts.
2.Replace the HVT PCB.
3.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
Serial communication error
A communication error of ASIC (HV_KONA) in the DC Controller PCB was detected.
[Related parts]
- DC Controller PCB (UN2)
[Remedy]
1.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
Serial communication error
A communication error between the DC Controller PCB and the Side Paper Deck was detected.
[Related parts]
- Harness connecting from the DC Controller PCB (UN2/J325) to the Deck Driver PCB (PCB2/
J357)
- Deck Driver PCB (PCB2)
- DC Controller PCB (UN2)
[Remedy]
1.Check/replace the related harness/cable, connector and parts.
2.Replace the Deck Driver PCB.
3.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
392
7. Error/Jam/Alarm