Ricoh B230 Service Manual page 301

No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Controller-to-operation panel communication error at startup
After the machine is powered on, the communication between the
controller and the operation panel is not established, or
communication with controller is interrupted after a normal startup.
After startup reset of the operation panel, the attention code or the
attention acknowledge code is not sent from the controller within 15
seconds.
After the controller issues a command to check the communication
line with the controller at 30-second intervals, the controller fails to
respond twice.
Controller stalled
CTL
Controller board installed incorrectly
672
D
Controller board defective
Operation panel connector loose or defective
The controller is not completely shutdown when you turn the main
switch off.
1. Check the setting of SP5875-001. If the setting is set to "1 (OFF)",
change it to "0 (OFF)".
2. Check the condition of the controller board.
3. Check the condition of the operation panel.
4. Replace the controller board.
5. Replace the operation panel.
6. Turn the main switch off, wait for one second or more, and turn the
main switch on.
SM 4-61 B230/B237