All codes
Service call
SC129
Scanner motor speed control error
BScanner / optics
Level B — stop, power-cycle may clear
First check
Driver cannot hold speed. Motor, then IOB.
What it means
Scanner motor speed control error. Confirm the exact subcode against the FSM for this serial — meaning can shift by generation.
Likely causes
- Driver cannot hold speed. Motor, then IOB.
On-site steps
Parts to have on the truck
- Scanner motor
- 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.