Haier 40D3500M, Service Manual

Page: 41 / 53

Chec
k
i
f
there is input
a
t C
7
38
C
7
39
Chec
k
i
f
there is output
a
t Pin1
ǃ
Pin
2
Pin3 Pin4 o
f
J1
7
No
No
Yes
Yes
No sound but h
a
ve picture
Ch
a
n
g
e M
a
inbo
a
rd
S
till h
a
vin
g
p
roble
m
s
Chec
k
i
f
there is
sound input si
g
n
a
l
No
Chec
k
the input source
Yes
Chec
k
i
f
there is input
a
t Pin3
ǃ
Pin1
2
o
f
UD3
Chec
k
i
f
there is si
g
n
a
l
a
t R
7
15
a
nd R
7
14
No
chec
k
the si
g
n
a
l input
circuit o
f
R
7
15,R
7
14
Yes
Ch
a
n
g
e UD3
No
Chec
k
the
spe
ak
ers
S
ervice M
a
nu
a
l
Model No.:
ǃ
chec
k
the si
g
n
a
l input
circuit o
f
C
7
38, C
7
39
a
nd U
7
0
2
No
Yes
Chec
k
i
f
there is +1
2V
a
t Pin15
a
nd Pin
2
8
o
f
UD3
Ch
a
n
g
e LD3
Ch
a
n
g
e LD5 LD
7
LD8 LD9
ǃ
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