Canon imageRUNNER ADVANCE C350 series Service Manual page 639

Error Detail
Location Item
code Code
E020 04B8 05 Title ATR Sensor (Bk) output error
Detection a. The output value of the ATR Sensor (Bk) in the Drum Unit (Bk)
description did not fall within the range from 10 or higher to 990 or less for
2 consecutive times at initialization.
b. The output value did not exceed 140 although the control
voltage of the ATR Sensor (Bk) in the Drum Unit (Bk) was
increased to 248 or higher, or it did not fall below 140 although
the voltage was decreased to 8 at initialization.
Remedy [Related parts]
- ATR Sensor (Bk) (UN37) (Unit of replacement: P-UNIT_BK)
- Drum Unit (Bk) (Unit of replacement: P-UNIT_BK)
- Harness between the ATR Sensor (Bk) (UN37/J6024) and
the Drum Unit Memory PCB (Bk) (UN15/J6014) (Unit of
replacement: P-UNIT_BK)
- Harness between the DC Controller PCB (UN04/J162) and the
Drum Unit Relay PCB (Bk) (UN11/J6004) (Unit of replacement:
PROCESS CONTROL PCB ASS'Y)
- DC Controller PCB (UN04) (Unit of replacement: DC
CONTROLLER PCB 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
E020 04C0 05 Title Error in take-up of Sealing Member (Bk)
Detection The patch output value (SigR) failed to be 900 or less during
description initialization of the Drum Unit (Bk).
Remedy [Remedy] Replace the Drum Unit (Bk). (Unit of replacement:
P-UNIT_BK)
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
E020 04F0 05 Title Error in toner density (Bk) at communication failure of the Drum
Unit Memory PCB (Bk)
Detection Communication between the DC Controller PCB and the Drum
description Unit Memory PCB (Bk) was not available, and the output value
(SigR) of the ATR Sensor (Bk) did not fall within the range from
50 or higher to 800 or less for 2 consecutive times.
Remedy [Related parts]
- Harness between the DC Controller PCB (UN04/J162) and the
Drum Unit Relay PCB (Bk) (UN11/J6004) (Unit of replacement:
PROCESS CONTROL PCB ASS'Y)
- Drum Unit (Bk) (Unit of replacement: P-UNIT_BK)
[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.
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Description
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