All codesService call
SC728
Finisher stack height error
BFinisher
Level B — stop, power-cycle may clear
First check
Actuator taped up by a user, or a dirty sensor.
What it means
Stack-height sensor thinks the tray is full or never sees paper.
Likely causes
- Height sensor
- Actuator
- Tray lift
On-site steps
Parts to have on the truck
- Stack height sensor
- Shift tray motor
Confirm the subcode and part number in the FSM for this serial. Raicoh is a field companion, not a replacement for the book.