LG LH-T3520X Service Manual page 19

E
YES
Normal Audio
output when disc
playback?
YES
TEST END.
PWM IC
NO
received correct data
stream?
YES
Normal
PWM IC out?(IC704).
YES
Check Digital Amp circuit
(IC702, IC703).
2-10
NO
Check connection between
IC704 BCK, LRCK, ADATAO.
Check the related circuit of
NO
PWM.(Check Audio out
Pins 55, 59, 61, 62, 68, 71, 75).