Ricoh SP5 Series Service Manual page 404

SERVICE CALL CONDITIONS
SC623: Communication error between SBICU and paper feed board
-Definition- [B]
The SBICU cannot communicate with the paper feed board properly.
- Possible causes -
• Poor connection between the SBICU board and the paper feed board
• Paper feed board defective
• SBICU board defective
• Noise on interface cable
SC624: Communication error between SBICU and LCT
-Definition- [B]
The SBICU cannot communicate with the LCT properly.
- Possible causes -
• Poor connection between the SBICU board and the LCT interface board
• LCT interface board defective
• SBICU board defective
• Noise on interface cable
SC630: CSS (RSS) communication error between line adapter and CSS center
Japan only
SC700: ADF original pick-up malfunction
-Definition- [B]
The pick-up roller H.P sensor signal does not change after the pick-up motor
has turned on.
- Possible causes -
• Pick-up roller H.P sensor defective
• Pick-up motor defective
• Timing belt out of position
• ADF main board defective
7-22
June 30, 1998