Samsung K15A Service Manual page 19

Troubleshooting
5-2 No Sound
Abnormal
Check
Normal
Waveform of IC201
Pin 52.
Check
Normal
Waveform of IC201
Pin 1.
Abnormal
Volume
Up.
NG
Check/Replace
IC201.
5-2
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Normal
Check
Waveform of
IC601 Pin 1.
Abnormal
Check
O.K
SIF (L201).
No Sound
Check
Connector CN601
and CN701.
Normal
Check
Normal
Waveform of IC601 and
IC602 Pins 4.
Abnormal
Check
Normal (approx. 12V)
Voltage of IC601 and IC602
Pin 5.
Abnormal
Check Power
12V Line Voltage.
Abnormal
Check CN601 and CN701
Connector
Soldering and A/V PCB.
Ok
Replace IC601
and IC602.
Samsung Electronics