Samsung HT-DM150 - CLV Servo Troubleshooting

Samsung Electronics 9-15
8. CLV Servo Does Not Work
8
CLV Servo Does not Work
Is XSRFIN(pin2 of DU3)
normal?
Check peripheral circuit of DU3
Is RF(pin4 of RCN1)
normal?
Check connection between PCB
and MECHA
Check peripheral circuit of MU9
Check peripheral circuit of RU1
Y
Y
N
N