All codes
Service call
SC302
Charge roller current leak
BPCU / developerCommon field call
Level B — stop, power-cycle may clear
First check
Pull the PCU for the color in the subcode. Look for toner contamination on the charge roller and pin-holes on the drum.
What it means
Charge bias leaked to ground. Usually a worn PCU, pin-hole drum, or toner bridging the charge roller.
Subcodes
- 302-01K (black)
- 302-05C (cyan) — typical IM C mapping
- 302-06M (magenta)
- 302-07Y (yellow)
Likely causes
- PCU at end of life
- Pin-hole in OPC drum
- Damp / high-humidity charge roller
- High-voltage leak at the contact
On-site steps
Parts to have on the truck
- PCU (color per subcode)
- Charge roller (if separate)
- HV contact
Related procedures
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.