All codes
Service call
SC141
Black level correction error
BScanner / optics
Level B — stop, power-cycle may clear
First check
SBU black-level failed. Cover closed? Then SBU.
What it means
Black level correction error. Confirm the exact subcode against the FSM for this serial — meaning can shift by generation.
Likely causes
- SBU black-level failed. Cover closed? Then SBU.
On-site steps
Parts to have on the truck
- SBU
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.