Fixing unit low temperature trouble
When the fixing main thermistor has detected a temperature below 130 deg C for the prescribed period of time after standby

Checking Disconnection of the Connector in the Thermistor Wiring. Replace the fixing belt unit. Replace the fixer and AC driver PCB. Replace the DC controller PCB 2 (MAISY). In the service mode, clear the error by selecting COPIER > FUNCTION > CLEAR > ERR