Samsung ML-3471ND/XAX Service Manual page 118

Adjustment and Troubleshooting
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.
2. Check whether the LSU
3. Check the HSYNC signal.
Service Manual
4-50
motor is rotating or not.
Replace a LSU
Replace a main board if the same
error occurs again after replacing
a LSU.
Samsung Electronics