Canon imageRUNNER ADVANCE C350 series Service Manual page 644

Error Detail
Location Item
code Code
E021 0320 05 Title Developing Screw rotation detection error (C)
Detection The difference between the maximum and the minimum of
description sampling values detected by the ATR Sensor (C) in the Drum
Unit (C) was 0.5 V or less.
Remedy [Related parts]
- Drum Unit (C) (Unit of replacement: DEVE_UNIT_C)
- Harness between the Drum Unit Relay PCB (C) (UN10/J6003)
and the DC Controller PCB (UN04/J162) (Unit of replacement:
PROCESS CONTROL PCB ASS'Y)
- Drum Unit Relay PCB (C) (UN10) (Unit of replacement:
PROCESS CONTROL PCB ASS'Y)
- Drum Unit Memory PCB (C) (UN14) (Unit of replacement:
DEVE_UNIT_C)
- DC Controller PCB (UN04) (Unit of replacement: DC
CONTROLLER PCB ASSEMBLY)
- Main Drive Unit (Unit of replacement: MAIN DRIVE
ASSEMBLY)
[Points to note at work]
- When checking the harness/cable or connector, perform the
following work.
1. Disconnect and then connect the connector to check that
there is no bent pin and cable disconnection.
2. Visually check that the harness is not caught or open circuit.
3. If there is any error, replace the corresponding harness/
cable.
- If the Drum Unit Memory PCB (C) is soiled, clean it with a
blower.
[Remedy] Check/replace the related parts.
[Reference] Before replacing the DC 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>
DSRAMBUP
- Restoration: COPIER (LEVEL2)> FUNCTION> SYSTEM>
DSRAMRES
7
Error•Jam•Alarm > Error Code > Error Code Details
Description
7 Error•Jam•Alarm > Error Code > Error Code Details
Error Detail
Location Item
code Code
E021 0420 05 Title Developing Screw rotation detection error (Bk)
Detection The difference between the maximum and the minimum of
description sampling values detected by the ATR Sensor (Bk) in the Drum
Unit (Bk) was 0.5 V or less.
Remedy [Related parts]
- Drum Unit (Bk) (Unit of replacement: P-UNIT_BK)
- Harness between the Drum Unit Relay PCB (Bk) (UN11/
J6004) and the DC Controller PCB (UN04/J162) (Unit of
replacement: PROCESS CONTROL PCB ASS'Y)
- Drum Unit Relay PCB (Bk) (UN11) (Unit of replacement:
PROCESS CONTROL PCB ASS'Y)
- Drum Unit Memory PCB (Bk) (UN15) (Unit of replacement:
P-UNIT_BK)
- DC Controller PCB (UN04) (Unit of replacement: DC
CONTROLLER PCB ASSEMBLY)
- Main Drive Unit (Unit of replacement: MAIN DRIVE
ASSEMBLY)
[Points to note at work]
- When checking the harness/cable or connector, perform the
following work.
1. Disconnect and then connect the connector to check that
there is no bent pin and cable disconnection.
2. Visually check that the harness is not caught or open circuit.
3. If there is any error, replace the corresponding harness/
cable.
- If the Drum Unit Memory PCB (Bk) is soiled, clean it with a
blower.
[Remedy] Check/replace the related parts.
[Reference] Before replacing the DC 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>
DSRAMBUP
- Restoration: COPIER (LEVEL2)> FUNCTION> SYSTEM>
DSRAMRES
7-30
Description
7-30