Ricoh D104 Field Service Manual page 636

6. Troubleshooting
No. Type
CTL
992
D
No. Type
995 D
6
-001
-002
-003
-004
634
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Undefined error
Defective software program
• An error undetectable by any other SC code occurred
Print the "Logging Data" with SP5990-004 and then check the SP7990.
If 498-Engine is found in the SP7990;
1. Check the harness connection of the temperature/humidity sensor.
2. Replace the temperature/humidity sensor.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
CPM setting error
• Defective BCU
1. Input the serial number with SP5811-004, and turn the main power switch off/
on.
• Defective NVRAM on the controller
• Defective controller
1. Install a new NVRAM, and turn off and on the main power switch after
SC995-002 has occurred.
2. Reinstall the previous NVRAM or download the information with SP5825-001,
after that turn the main power off and on.
• Incorrect type controller installed
• Defective controller
Replace the controller board with the correct type.
• Incorrect model controller installed.
Replace the controller board with the correct model.