All codes
Service call
SC396
PCU communication / drum unit error
BPCU / developerCommon field call
Level B — stop, power-cycle may clear
First check
Reseat the PCU. Confirm it is a genuine / compatible CRUM for this firmware.
What it means
Controller cannot read the PCU CRUM / EEPROM, or the drum unit is not talking.
Likely causes
- Unseated PCU
- CRUM chip
- Contacts
- Wrong unit for the model
On-site steps
Parts to have on the truck
- PCU
- CRUM contact block
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.