All codes
Service call
SC123
Scanner home position error 4
BScanner / optics
Level B — stop, power-cycle may clear
First check
HP still failing after 120/121. Replace HP sensor or scanner motor.
What it means
Scanner home position error 4. Confirm the exact subcode against the FSM for this serial — meaning can shift by generation.
Likely causes
- HP still failing after 120/121. Replace HP sensor or scanner motor.
On-site steps
Parts to have on the truck
- HP sensor
- Scanner motor
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.