Canon imageRUNNER ADVANCE C5255 Series Service Manual page 556

■ E732-0021/0022: Scanner communication error
[Description]
A communication error between the Reader Controller PCB and the Main Controller PCB 2
was detected at startup/recovery from sleep.
[Remedy]
Start remedy for error
at startup
Check (connection and conduction
state of)/replace the related
harness/cable, connector and
parts. (Refer to [Related parts].)
Is the error cleared?
No
Collect Sublog and contact
to the sales company.
NOTE:
If the cause of the error cannot be
identified by analyzing Sublog,
it may require investigation separately.
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Troubleshooting > Troubleshooting items > Error Code > E732-0021/0022: Scanner communication error
Yes
End
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6 Troubleshooting > Troubleshooting items > Error Code > E732-0021/0022: Scanner communication error
[Related parts]
• Harness between the Main Controller PCB 2 (J3003) and the Reader Controller PCB (PCB1/
J109) (Unit of replacement: CABLE, INTERFACE)
• Harnesses from the Relay PCB to the Reader Controller PCB
1. Relay PCB (UN5/J426) to Relay Connector (6P) (Unit of replacement: CABLE, DC
POWER SUPPLY)
2. Relay Connector (6P) to Reader Controller PCB (PCB1/J101) (Unit of replacement:
CABLE, READER POWER SUPPLY)
• Main Controller PCB 2 (Unit of replacement: MAIN CONTROLLER PCB ASS'Y, 2)
• Reader Controller PCB (PCB1) (Unit of replacement: READER CONTROLLER PCB
ASSEMBLY)
• Relay PCB (UN5) (Unit of replacement: RELAY PCB ASSEMBLY)
[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
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