Ricoh D027 Service Manual page 40

No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
B 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.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Counter device error 2
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
CTL
ms.
633
B
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.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Counter device error 3
CTL
A backup RAM error was returned by the counter device.
634
B
Counter device control board defective
Backup battery of counter device defective
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
635 CTL Counter device error 4
B
A backup battery error was returned by the counter device.
SM 3-43
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SC Tables
D027/D029 APPENDICES