Samsung MultiXpress M5370 Series Service Manual page 361

Table of Contents

► Error Code

► Error message

Fuser Unit Failure: #U1-234J. Turn off then on.

Fuser Unit Failure: #U1-234P. Turn off then on.

The temperature control of fuser unit is abnormal. The fuser temperature has risen above the normal value.

► Troubleshooting method

The temperature gets hot around the Fuser Unit. To prevent burns, make sure the Fuser Unit area is cool before

performing this procedure.

1) Turn the machine off then on.

2) Turn the machine off. Re-install the fuser unit. Then turn the machine on.

3) If the problem persists, remove the fuser unit.

4) Check the fuser components.

Check if the thermistor is assembled correctly.

Check if the thermostat is connected.

Check if the center and side lamps are in short status. (Measure the resistance value between the common-center

and common-side.)

5) If there are any defective parts in step5, replace the fuser unit.

6) If the problem persists, replace these parts in regular sequence.

Fuser Drive Board

4. Troubleshooting

Troubleshooting