Samsung S1000 Service Manual page 23

6-3 CD
6-3-1 Disc Revolution Malfunction
Power On and CD Function
Check disc sensor voltage
WCW4(SENI) condition
Is Focus search done properly?
Does Laser function during
Focus Search ?
Check WIC41 pin73 voltage
during Focucs search : 5V
Replace NIC9220 or NIC9258
Samsung Electronics
Yes
Yes
Yes
Yes
Yes
No
Check PC1,WQ91,92
No
Check oscillation of XX1
(33.8688MHz)
No
No
Troubleshooting
Replace Pick-up
Replace WIC41
6-7