Gestetner A193 Service Manual page 270

Rev. 2/28/97
SC692: Communication error between BiCU and printer controller
-Definition- [B]
The BICU board cannot communicate with the printer controller properly.
- Possible causes -
•
Poor connection of the interface harness which connects the BICU board
and the mother board.
•
Poor connection between the mother board and the printer controller
•
BICU board defective
•
Printer controller defective
•
Mother board defective
SC900: Total counter error
-Definition- [C]
The total counter is not working properly.
- Possible causes -
•
Total counter defective
•
IOCSS board defective
⇒
•
Fuse #5, PSU blown
SC920: MSU connection error
-Definition- [B]
The MSU set signal is not detected
- Possible cause -
•
Poor connection between the BICU board and the MSU
•
BICU board defective
•
MSU defective
SC921: MSU hardware error
-Definition- [B]
The hardware of the MSU is defective
- Possible cause -
•
MSU defective
•
BICU defective
•
Front door safety switch does not work properly
SM
SC CODE DESCRIPTIONS
6-9 (A193)