SC6xx: Device Communication
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
622 D 2nd paper bank (option) communication error
• While the bridge board communicates with an optional unit, an SC code is
displayed if one of following conditions occurs.
• The bridge board receives the break signal which is generated by the
peripherals only just after the main switch is turned on.
• When the bridge board does not receive an OK signal from a peripheral
100ms after sending a command to it. The bridge board resends the
command. The bridge board does not receive an OK signal after sending
the command 3 times.
• Cable problems
• Bridge board problems
• BCU problems
• PSU problems in the machine
• Main board problems in the peripherals
1. Check if the cables of peripherals are correctly connected.
2. Replace the bridge board or main board of peripherals.
3. Replace the BCU if no power is supplied to peripherals.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
623 D 3rd Paper Bank (option) communication error
This SC is not issued for this machine.
When a communication error signal between the 2nd paper bank and 3rd paper
bank is received.
• Loose or disconnected connector
Check the connection between the main machine and paper feed unit.
SC Tables
595
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