Xerox Phaser 3120 Malfunction, All LEDs blinking Fuser Error, All LEDs blinking Scan Error

TROUBLESHOOTING

4.4 Malfunction

4.4.1 All LEDs blinking (Fuser Error)

1. All the lamps on the operator panel blink.

• Description 2. Gear of the fuser does not work and breaks away melt away.

When printing, motor breaks away from its place due to defective fuser gear.

	Check and Cause		Solution
1.	Check if the thermostat, AC wire and Heat Lamp is	1.	If the thermostat is open replace the fuser and
	open.		check following items.
2.	Check if the thermistor sensor is in place.	2.	If the thermistor sensor device is located deep in the
			sponge, replace the fuser.

3. Check if the heat lamp works properly.

3. Check if the circuit of overheat mode works properly.

4. Check if the overheat circuit works properly.

4. Run DCU mode : Perform DCU diagnostic code 10.

5. The fuser gear is defective due to melting away.

5. Replace Fuser.

4.4.2 All LEDs blinking (Scan Error)

• Description	1. All lamps on the operator panel blink.
	Check and Cause	Solution
DCU Mode : Perform DCU diagnostic code 05. If the DCU		Replace LSU.
error code 95 is displayed, replace LSU.
		If you cannot solve the problem after you replace LSU,
		replace the main board.

Service Manual 4-17