Samsung P843GW/YLP Service Manual page 21

8-2-7. Confirm The Driving Part Of Motor
Motor Is Not Spinning
Motor Is Not Turnning Right
And Left
Check The Tacho Part
CM05
R69
NO
NO
BD1
COIL2
RELAY3
YES
YES
12V
CM2
R71
TRIAC1
D13
20
Check BD1, TRIAC1
Check RELAY2
IC 65003
R46
1W 300
MICOM
22
15