Ricoh D027 Service Manual page 42

No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Controller board defective
External noise
BICU board defective
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
CTL
650 Communication error of the remote service modem (Cumin-M)
B
Authentication error
The authentication for the Cumin-M fails at a dial up connection.
Incorrect SP settings
-001 -
Disconnected telephone line
Disconnected modem board
1. Check and set the correct user name (SP5816-156) and password
(SP5816-157).
Incorrect modem setting
Dial up fails due to the incorrect modem setting.
-004 -
Same as -001
1. Check and set the correct AT command (SP5819-160).
Communication line error
The supplied voltage is not sufficient due to the defective
communication line or defective connection.
-005 -
Same as -001
1. Consult with the user's local telephone company.
SM 3-45
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SC Tables
D027/D029 APPENDICES