Ricoh M022 Service Manual page 677

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While the BCU communicates with an optional unit, an SC code is displayed if one

of following conditions occurs.

• The IPU receives the break signal which is generated by the peripherals only

just after the main switch is turned on.

• When the BCU does not receive an OK signal from a peripheral 100ms after

sending a command to it. The IPU resends the command. The IPU does not

receive an OK signal after sending the command 3 times.

• Cable problems

• IPU 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 PSU if no power is supplied to peripherals.

3. Replace the IPU or main board of peripherals.

4. Replace the BCU.

2nd Paper Bank communication error

This SC is not issued for this machine.

When a communication error signal between the 1st paper bank and 2nd paper

bank is received.

• Loose or disconnected connector

Check the connection between the main machine and paper feed unit.

CÓPIA NÃO CONTROLADA

Details (Symptom, Possible Cause, Troubleshooting Procedures)

CÓPIA NÃO CONTROLADA

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M024 M026 M028