Canon imageRUNNER ADVANCE C350 series Service Manual page 651

Error Detail
Location Item
code Code
E073 0001 05 Title Interlock error
Detection No detection of Interlock (24 V) although all the Doors (Front
description Cover and Right Cover) of the host machine were closed.
Remedy [Related parts]
- Front Cover/Right Cover
- Harness between the Interlock Switch 1 and 2 (SW02 and
SW03) and the DC Controller PCB (UN04/J24/pin 1 and 2) (Unit
of replacement: COVER, INNER, FRONT, RIGHT)
- Harness between the Low-voltage Power Supply PCB
(UN01/J315) and the DC Controller PCB (UN04/J20) (Unit of
replacement: CABLE, POWER SUPPLY)
- DC Controller PCB (UN04) (Unit of replacement: DC
CONTROLLER PCB ASSEMBLY)
- Low-voltage Power Supply PCB (UN01) (Unit of replacement:
POWER SUPPLY 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.
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
Remedy [Remedy] Perform the following in the order while checking
whether the error is cleared.
1. Check that the Front Cover/Right Cover is closed.
2. Visually check that the Interlock Switch 1 and 2 are turned
ON/OFF by opening/closing the Front Cover/Right Cover.
3. Check that the harness between the Interlock Switch 1 and
2 and the DC Controller PCB is not short-circuited (the harness
does not come in contact with the plate while the cable sheath
is peeled).
4. Disconnect the connector (J24) of the DC Controller while
the Front Cover and the Right Cover are closed, and measure
the resistance value between the connectors J24/1-pin and the
J24/2-pin on the J24 harness side using a tester.
a. If the measurement value is less than 1 ohm (conduction
state),
1. Replace the DC Controller PCB.
2. Replace the Low-voltage Power Supply PCB.
b. If the measurement value is 1 ohm or higher (non
conduction state), replace the harness between the Interlock
Switch 1 and 2 and the DC Controller PCB.
5. Check the harness between the Low-voltage Power Supply
PCB and the DC Controller PCB.
6. Replace the DC Controller PCB.
7. Replace the Low-voltage Power Supply PCB.
[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
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Description
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