LG S33A1-D - Page 23

3-10
RECEIVER BAR TROUBLESHOOTING
Check AMP IC output stage
and speaker terminal.
Optical function
Check JK301, JK302 or replace.
YES
YES
NO
IC301
Pin35, 94 OPT_IN signal
OK?
Check IC301 or replace.
YES
NOIC301
Pin69, 70, 71, 74 PWM signal
OK?