All codes
Service call
SC636
BICU / paper-feed control communication
BCommunications
Level B — stop, power-cycle may clear
First check
Cabinet / LCT cable at the back of the engine — kicked loose when the machine was moved.
What it means
Communication between BICU/IOB and the paper-feed control PWA failed.
Likely causes
- Cabinet I/F cable
- PFB
- IOB
On-site steps
Parts to have on the truck
- Paper feed board
- Cabinet I/F cable
- IOB
Related codes
Confirm the subcode and part number in the FSM for this serial. Raicoh is a field companion, not a replacement for the book.