Canon imageRUNNER ADVANCE C350 series Service Manual page 682

Error Detail
Location Item
code Code
E240 0000 00 Title Controller communication error
Detection A sequence error with the controller occurred.
description
Remedy [Related parts]
- Flexible Cable between the DC Controller PCB (UN04/
J112) and the Main Controller PCB (UN81/J7001) (Unit of
replacement: CABLE, FLAT)
- DC Controller PCB (UN04) (Unit of replacement: DC
CONTROLLER PCB ASSEMBLY)
- Main Controller PCB (UN81) (Unit of replacement: MAIN
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.
[Remedy] Perform the following in the order while checking
whether the error is cleared.
1. Check the harness between the DC Controller PCB and the
Main Controller PCB.
2. Turn ON the power, and check if the initialization is executed
at startup.
2-1. If the initialization is not executed, replace the DC
Controller PCB.
2-2. If the initialization is executed, replace the Main Controller
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
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
E240 0005 00 Title Controller communication error
Detection A sequence error with the controller occurred.
description
Remedy [Related parts]
- Flexible Cable between the DC Controller PCB (UN04/
J112) and the Main Controller PCB (UN81/J7001) (Unit of
replacement: CABLE, FLAT)
- DC Controller PCB (UN04) (Unit of replacement: DC
CONTROLLER PCB ASSEMBLY)
- Main Controller PCB (UN81) (Unit of replacement: MAIN
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.
[Remedy] Perform the following in the order while checking
whether the error is cleared.
1. Check the harness between the DC Controller PCB and the
Main Controller PCB.
2. Turn ON the power, and check if the initialization is executed
at startup.
2-1. If the initialization is not executed, replace the DC
Controller PCB.
2-2. If the initialization is executed, replace the Main Controller
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
7-68
Description
7-68