Canon imageRUNNER ADVANCE 4551i Service Manual page 416

400-0002-04
Detection Description
Remedy
400-0003-04
Detection Description
Remedy
412-0005-04
Detection Description
Remedy
412-0006-04
Detection Description
Remedy
423-0001-04
Detection Description
Remedy
490-0001-04
Detection Description
Remedy
Communication error
A communication error between the Reader Controller PCB and the DADF Driver PCB was
detected.
[Related parts] R1.00
- Harness between the Reader Controller PCB (UN_BO1/J103) and the DADF Driver PCB (PCB1/
J401)
- Harness between the Reader Controller PCB (UN_BO1/J104) and the DADF Driver PCB (PCB1/
J402)
- DADF Driver PCB (PCB1)
- Reader Controller PCB (UN_BO1)
[Remedy] Check/replace the related harness/cable, connector and parts.
[Reference] Before replacing the Reader 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> RSRAMBUP
- Restoration: COPIER (LEVEL2)> FUNCTION> SYSTEM> RSRAMRES
Communication error
Disconnection of the harness between the Reader Controller PCB and the DADF Driver PCB was
detected.
[Related parts] R1.00
- Harness between the Reader Controller PCB (UN_BO1/J103) and the DADF Driver PCB (PCB1/
J401)
- Harness between the Reader Controller PCB (UN_BO1/J104) and the DADF Driver PCB (PCB1/
J402)
- DADF Driver PCB (PCB1)
- Reader Controller PCB (UN_BO1)
[Remedy] Check/replace the related harness/cable, connector and parts.
[Reference] Before replacing the Reader 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> RSRAMBUP
- Restoration: COPIER (LEVEL2)> FUNCTION> SYSTEM> RSRAMRES
Fan error
Rotation of fan was detected after the stop signal for the DADF Cooling Fan was transmitted.
[Related parts] R1.00
- DADF Cooling Fan (FAN_A1)
- DADF Driver PCB (PCB1)
[Remedy] Check/replace the related parts.
Fan error
Stop of fan was detected after rotation signal for the DADF Cooling Fan was transmitted.
[Related parts] R1.00
- DADF Cooling Fan (FAN_A1)
- DADF Driver PCB (PCB1)
[Remedy] Check/replace the related parts.
SDRAM error in the Reader Controller PCB
Either an access error to SDRAM in the Reader Controller PCB or an error at data inspection was
detected.
Replace the Reader Controller PCB (UN_BO1).
[Reference] Before replacing the Reader 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> RSRAMBUP
- Restoration: COPIER (LEVEL2)> FUNCTION> SYSTEM> RSRAMRES
Different Scanner Unit model error
A wrong Scanner Unit was installed.
Install the Scanner Unit for this model.
403
7. Error/Jam/Alarm