Ricoh G031 Service Manual page 180

PRINTER ENGINE SC CODES
SC544: Fusing Low Temperature Error
Definition:
A fusing temperature of lower than 100°C is detected for 1 second by the
fusing thermistor (this error does not apply when the machine is in energy
saver mode).
Possible causes
• Fusing thermistor defective
• Power supply unit defective
SC998 : Fusing Unit Mismatch
Definition:
The fusing unit for a different area is installed in the machine.
Possible causes
• Wrong fusing unit
SC999: Communication Error
Definition:
Communication error between engine and control board.
Possible causes
• Command error or parity error between engine and control board.
G031/G032 7-8 SM