Ricoh AP-P2 G188 Field Service Manual page 324

3. Appendix: Service Call Conditions
No. Type
3
- -
No. Type
623 D
No. Type
CTL
636
D
66
Details (Symptom, Possible Cause, Troubleshooting Procedures)
While the IOB communicates with an optional unit, an SC code is displayed if one
of following conditions occurs.
• The IOB receives the break signal which is generated by the peripherals only
just after the main switch is turned on.
• When the IOB does not receive an OK signal from a peripheral 100ms after
sending a command to it. And when the IOB does not receive an OK signal
even after sending the command 3 times, the IOB resends the command.
• Cable problems
• IOB 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 IOB or main board of peripherals.
4. Replace the BCU.
5. Replace the defective peripheral.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
2nd Paper Bank communication error
In the case of installing two optional paper feed units (D351 + D387):
• The upper unit cannot communicate with the lower unit after the upper unit has
detected the lower unit.
• The upper unit detects an error signal from the lower unit after the upper unit
has detected the lower unit.
• Disconnected connector
Check and/ or connect the connector.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
SD Card Error