Samsung ML-3471ND/XAX - LSU and Fuser Gear Malfunctions

Service Manual
Adjustment and Troubleshooting
4-50
Samsung Electronics
2) LSU Error
Description: A message "PMOTOR ERROR/HSYNC ERROR' is displayed in a LCD panel.
1. Check whether the LSU
connector is disconnected or not.
Replace a LSU
Replace a main board if the same
error occurs again after replacing
a LSU.
2. Check whether the LSU
motor is rotating or not.
3. Check the HSYNC signal.