All codesService call
SC230
FGATE error
BLaser / write
Level B — stop, power-cycle may clear
First check
Often a one-shot after a jam or firmware glitch. Power cycle first. Recurring → IOB / controller.
What it means
Frame gate (FGATE) assertion failed — engine and controller disagreed on when to write.
Likely causes
- Controller-engine timing
- IOB
- Firmware
On-site steps
Parts to have on the truck
Confirm the subcode and part number in the FSM for this serial. Raicoh is a field companion, not a replacement for the book.