Canon imageRUNNER ADVANCE 4551i Service Manual page 407

202-0004-04
Detection Description
Remedy
202-0101-04
Detection Description
Remedy
202-0102-04
Detection Description
Remedy
227-0001-04
Detection Description
Remedy
Reader Scanner Unit HP error
Home position error of the Reader Scanner Unit was detected when reading of a job was
completed.
[Related parts] R1.00
- Harness between the Reader Controller PCB (UN_BO1/J102) and the Scanner Unit HP Sensor
(PS_A1/J5002)
- Harness between the Reader Controller PCB (UN_BO1/J108) and the Scanner Motor (STM1/
J5015)
- Scanner Unit HP Sensor (PS_A1)
- Scanner Motor (STM1)
- 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
DADF Scanner Unit HP error
The DADF Scanner Unit could not detect the home position when starting scanning operation.
[Related parts] R1.00
- Harness between the DADF Driver PCB (PCB1/J408) and the Glass Movement HP Sensor (PS_
A9/J462)
- Glass Movement HP Sensor (PS_A9)
- Glass Movement Gear 18T
- DADF Driver PCB (PCB1)
[Remedy] Check/replace the related harness/cable, connector and parts.
DADF Scanner Unit HP error
The DADF Scanner Unit could not detect the home position when completing scanning operation.
[Related parts] R1.00
- Harness between the DADF Driver PCB (PCB1/J408) and the Glass Movement HP Sensor (PS_
A9/J462)
- Glass Movement HP Sensor (PS_A9)
- Glass Movement Gear 18T
- DADF Driver PCB (PCB1)
[Remedy] Check/replace the related harness/cable, connector and parts.
Power supply error
The Reader Controller PCB did not detect 24 V when the main power was turned ON.
[Related parts] R1.00
- Harness between the Reader Controller PCB (UN_BO1/J104) and the DADF Driver PCB (PCB1/
J402)
- Harness between the Reader Controller PCB (UN_BO1/J101) and the AC Driver PCB (UN30/
J118)
- Harness between the AC Driver PCB (UN30/J112) and the 12V/24V Power Supply PCB (UN5/
CN52)
- Reader Controller PCB (UN_BO1)
- DADF Driver PCB (PCB1)
- AC Driver PCB (UN30)
- 12V/24V Power Supply PCB (UN5)
[Remedy] Check/replace the related harness/cable, connector and parts.
[Reference]
- When an error is detected, conduction of 24 V is stopped. At power check, check if 24 V is
conducted or rated voltage is output by repeating power cycling of the machine.
- 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
394
7. Error/Jam/Alarm