Ricoh M065 Service Manual page 350

SC Tables
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
NVRAM error
Retry of NVRAM communication fails three times after the machine has
detected the NVRAM error.
669 D
Caused by noise
Turn the main power switch off and on.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Engine start up error
The ready signal from the engine board is not detected.
CTL
670
D
Defective engine board.
Replace the engine board.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Engine board mismatch error
Engine board and controller mismatch detected.
CTL
671
D
1.
2.
M065/M066
Wrong engine board installed.
Wrong controller board installed.
Check the type of engine board and controller board.
Replace the BCU.
Replace the controller board.
3-40 SM Appendix