Ricoh D104 Field Service Manual page 602

6. Troubleshooting
No. Type
- -
6
No. Type
CTL
632
B
600
Details (Symptom, Possible Cause, Troubleshooting Procedures)
While the BCU communicates with an optional unit, an SC code is displayed if one
of following conditions occurs.
• The BCU 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 BCU resends the command. The BCU does not
receive an OK signal after sending the command 3 times.
• Cable problems
• BCU problems
• PSU problems in the machine
• Main board problems in the peripherals
• Defective main board of peripherals.
• Disconnected 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 main board of peripherals.
4. Replace the BCU.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Counter device error 1
After 3 attempts to send a data frame to the optional counter device via the serial
communication line, no ACK signal was received within 100 ms.
• Serial line between the optional counter device, the relay board and copier
control board is disconnected or damaged
• Make sure that SP5113 is set to enable the optional counter device.