3
ǃ
Picture is normal, but speaker no Audio
Have
picture, no
audio
Check U803 pin
2,3,34,35,40,41,44
ˈ
45,is
24V? And pin 13,27 is
3.3V?
Y
N
Check the audio Power
net(L804,R898,R899) and
other components around
the Audio Power net)
I2S signal is right? And
R876\R877\R878\R879 should
be have sign at anytime
L801
Ͳ
L802 if have
signal?
Check the speaker and
cable
Check R851 if is 3.3V?
Check if the mute circuit
have any issue
Y
Y
Y
N
N
Y
Check if
R876\R877\R878\R879
have sign at anytime
N
Check the U702