Service manual

4. Alignment and Troubleshooting
Service Manual
ML-551x / 651x series
4-125
Samsung Electronics
 Code
U1-2330
 Error message
Fuser Unit Failure: #U1-2330. Turn off then on
 Symptom / Cause
Low Heat error has occurred.
The fuser unit can not reach the target temperature within normal time.
 Troubleshooting method
1. Check if the fuser unit is installed properly. Turn the machine off then on.
2. Remove the fuser unit after removing 4 screws.
3. Check if the fuser unit is overheated.
a. Remove the GUIDE-EXIT LOWER.
To remove it, fi rst, push and release the green lever to the direction of arrow.
Then, lift and pull it.