All codes
Service call
SC549
Fusing thermopile / shield error
AFusing
Level A — stop, SP reset after repair
First check
Thermopile window dirty or shield assembly out of position.
What it means
Non-contact thermopile or fusing shield assembly error. Common on later IM C fusers.
Likely causes
- Dirty thermopile window
- Shield assembly
- Thermopile
On-site steps
Parts to have on the truck
- Thermopile
- Fusing shield assembly
- Fusing unit
SP / reset
SP5-810-001
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.