Canon imageRUNNER ADVANCE 4551i Service Manual page 516

804-0001-05
Detection Description
Remedy
805-0000-05
Detection Description
Remedy
805-0001-05
Detection Description
Remedy
805-0002-05
Detection Description
Remedy
Unstable rotation of the Power Supply Cooling Fan (FM5)
The fan stop signal is detected for 5 minutes or more and the retry operation fails 4 times
continuously after generating the ON signal of the Power Supply Cooling Fan (FM5).
[Related parts]
- Harness connecting from the DC Controller PCB (UN2/J117) to the Power Supply Cooling Fan
(FM5/J712)
- Power Supply Cooling Fan (FM5)
[Remedy]
1.Check/replace the related harness/cable, connector and parts.
2.Replace the Power Supply Cooling Fan.
Failure of the Exhaust Fan (Rear) (FM3)
When lock signal is detected for 15 sec while the Exhaust Fan (Rear) (FM3) is stopped.
* The same condition is detected after the error retry is performed.
[Related parts]
- Harness connecting from the DC Controller PCB (UN2/J335) to the Exhaust Fan (Rear) (FM3/
J2010)
- Exhaust Fan (Rear) (FM3)
- DC Controller PCB (UN2)
[Remedy]
1.Check/replace the related harness/cable, connector and parts.
2.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
Unstable rotation of the Exhaust Fan (Rear) (FM3)
When lock signal failed to be detected for 15 sec while the Exhaust Fan (Rear) (FM3) is driven.
* The same condition is detected after the error retry is performed.
[Related parts]
- Harness connecting from the DC Controller PCB (UN2/J335) to the Exhaust Fan (Rear) (FM3/
J2010)
- Exhaust Fan (Rear) (FM3)
- DC Controller PCB (UN2)
[Remedy]
1.Check/replace the related harness/cable, connector and parts.
2.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
Failure of the Exhaust Fan (Front) (FM4)
When lock signal is detected for 15 sec while the Exhaust Fan (Front) (FM4) is stopped.
* The same condition is detected after the error retry is performed.
[Related parts]
- Harness connecting from the DC Controller PCB (UN2/J335) to the Exhaust Fan (Front) (FM4/
J2009)
- Exhaust Fan (Front) (FM4)
- DC Controller PCB (UN2)
[Remedy]
1.Check/replace the related harness/cable, connector and parts.
2.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
503
7. Error/Jam/Alarm