Fuser Error

50.1 FUSER ERROR
AC power is not being provided to the fuser assembly. AC voltage is necessary to generate heat in the fuser assembly.
1. Verify that the fuser power cable at the back of the device is connected and the ECU is fully seated.
2. If the message persists, replace the fuser assembly.

50.6 FUSER ERROR
The main or sub thermistors are unable to provide temperature feedback to the ECU.
The main and sub thermistors monitor the fuser assembly hot-roller temperature and provide feedback to regulate the fusing temperature.
1. Verify that the seven-wire connector is firmly seated in connector J405 on the ECU. You might have to remove the main cooling fan to see this connection.
2. Verify that the four-wire connector at the rear of the device is firmly seated in the fuser assembly.
3. Verify that the AC voltage is being
provided to the fuser assembly.
4. If the message persists, replace the
fuser assembly.