LG SH33SU-S/W Service Manual page 19

E
YES
Normal Audio
output when disc
playback?
YES
TEST END.
LGE Internal Use Only
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).
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes