Ricoh A172 - 1.9 Communication

1.9 COMMUNICATION
SC600: Communication error between main control and operation panel
boards
- Definition - [B]
The main CPU cannot communicate with the operation panel CPU
properly.
- Possible causes -
• Poor connection between main control board and operation panel
board
• Main board defective
• Operation panel defective
SC601: Communication error between main control and scanner control
boards
- Definition - [B]
The main CPU cannot communicate with the scanner control CPU
properly.
- Possible causes -
• Poor connection between main control board and scanner control
board (optical fiber cable)
• Optical fiber cable defective
• Main control board defective
• Scanner control board defective
• DC power supply board defective (no dc 5V input to scanner control
board)
SC602: Communication error between main control and transfer belt
motor drive boards
- Definition - [B]
The main CPU does not receive the response signal from the transfer belt
drive board after 3 tries.
- Possible causes -
•
Poor connection between main control board and transfer belt drive
board
•
Main control board defective
•
Transfer belt drive board defective
A172/A199 6-22 SM