All codes
Service call
SC390
Process control / image density fail
BPCU / developerCommon field call
Level B — stop, power-cycle may clear
First check
Forced process control failed. Clean ID sensors, then developer. Do not keep forcing MUSIC on a dirty ID.
What it means
Process control / image density fail. Confirm the exact subcode against the FSM for this serial — meaning can shift by generation.
Likely causes
- Forced process control failed. Clean ID sensors, then developer. Do not keep forcing MUSIC on a dirty ID.
On-site steps
Parts to have on the truck
- ID sensor
- Developer
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.