5. Defective Main PCB.
a. Replace the PCB Main.
2.2 Rollers Over Heating
CAUSES
1. Heat sensor is reversed on the PCB Main.
2. Defective T/Fuse wire.
3. Defective heater.
4. Defective main PCB.
MEASURES
1. Wires for lower and upper heat sensors are reversed on the main PCB.
a. Reverse the heat sensors.
2. Defective T/Fuse wire.
a. Replace the T/Fuse wire located on the left-hand side.
3. Defective heater.
a. Test continuity of the heater. If it fails, replace the heater.
b. Glass tube that surrounds heating coil is broken – replace the heating element.
Connector-Wire Sensor
Wire-T / Fuse
5