Haier L19A11W Service Manual page 22

N
N
Y
Check
periphery
audio
equipment Check
Reset item
speak
louder
No sound
Check audio signal input
Y
Check VOLUME and MUTE
N
N
Check U6 circuit
Broken U3 or
E45
Y
Check signal output
of CN11
Y
Check pin8 of U3(≥9.2V)
Y
Check signal input of
pin1/9 of U3
Y
Check signal
output of pin4/6
of U3
Y
Check audio input signal:
SCART:pin56/57of u21
AV:pin49/50 of u21
PC:pin53/54 of u21
Y
Check circuit
Check u21
between U3 and
CN11
N
Check pin7 of U3(for 11~12V)
N
Check signal output
of pin60/61 of U21
Y
N
Check
N
u21
pin60/61
Check
to u3
network
pin1/9
between
audio
input and
u21
N
Check u3
power
circuit