Samsung MM-DA25 Service Manual page 15

4-1-3 CD NO PLAY OR NO SOUND
CD NO PLAY OR NO SOUND
PLAYING OK
No Sound
Check CD-Mute
on UIC1 P69
(H: Mute, L: Normal)
Low
NO OUTPUT CHECK
Samsung Electronics
No Play
MAIN PCB DIC1
REPLACE SMPS
High
RESET SET OR CHECK
OUTPUT (5V)
NG
UIC1
Troubleshooting
OK
CD DECK CHECK
4-5