Samsung VP-D353 Service Manual page 124

Troubleshooting
Drum Does Not Rotate
IC401-16 3V?
YES
IC401-60 is VS normal?
YES
IC401 is Drum U, V, W
Waveform
YES
Changing Drum Motor
12-2
NO
CHECK IC501 MICOM
NO
Is DRUM error OUT normal?
CHECK Q702, L717
NO
CHECK IC401
NO
CHECK
R5108, R5107, C518, C519
Samsung Electronics