All codes
Service call
SC441
Development motor / transfer leak (model-dependent)
BTransfer / HVCommon field call
Level B — stop, power-cycle may clear
First check
If a color is missing and the developer sleeve is not turning, it is the dev motor. If the ITB is arcing, it is transfer.
What it means
Older machines: development motor lock. Many IM C: transfer current leak. Always confirm against the model manual.
Aficio: development motor lock. IM C: transfer leak is more typical — confirm in the FSM.
Likely causes
- Development motor (older)
- Transfer leak (IM C)
- Bind in developer
On-site steps
Parts to have on the truck
- Development motor
- ITB
- HVPS
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.