Canon imageRUNNER ADVANCE 4551i Service Manual page 477

713-0021-05
Detection Description
Remedy
713-0022-05
Detection Description
Remedy
716-0000-05
Detection Description
Remedy
Erroneous communication with finisher (reception time out error)
The communication does not restart by the error retry after the communication failure with the
finisher.
[Related parts]
- Harness connecting from the DC Controller PCB (UN2) to the Finisher Controller PCB. (PCB1/
PCB101)
- Finisher Controller PCB (PCB1/PCB101)
- DC Controller PCB (UN2)
[Remedy]
1.Check/replace the related harness/cable, connector and parts.
2.Replace the Finisher Controller 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
Erroneous communication with finisher (reception data error)
The communication does not restart by the error retry after the communication failure with the
finisher.
[Related parts]
- Harness connecting from the DC Controller PCB (UN2) to the Finisher Controller PCB. (PCB1/
PCB101)
- Finisher Controller PCB (PCB1/PCB101)
- DC Controller PCB (UN2)
[Remedy]
1.Check/replace the related harness/cable, connector and parts.
2.Replace the Finisher Controller 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
Erroneous communication with cassette pedestal
After the presence of a cassette pedestal has been detected, the communication fails to be normal
for 5 sec.
[Related parts]
- Cassette Feeding Unit-AN1:Harness connecting from the DC Controller PCB (UN2/J325) to the
Pedestal Controller PCB (UN101/J32)
- High Capacity Cassette Feeding Unit-B1:Harness connecting from the DC Controller PCB (UN2/
J338) to the High-capacity Cassette Driver PCB (UN104/J31)
- Pedestal Controller PCB (UN101)/High-capacity Cassette Driver PCB (UN104)
- DC Controller PCB (UN2)
[Remedy]
1.Check/replace the related harness/cable, connector and parts.
2.Replace the Pedestal Controller PCB (UN101)/High-capacity Cassette Driver PCB (UN104).
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
464
7. Error/Jam/Alarm