Sharp TU-37GD1E (serv.man8) Service Manual ▷ View online
48
TU-32GD1E
TU-37GD1E
TU-37GD1E
TROUBLE SHOOTING TABLE
(Continued)
Is the power 3.3V input to Pin (3) of P5003?
Is the so
ck
et of P5
1
0
2
inserte
d
?
YES
YES
YES
YES
YES
OK
Is the power
1
.5V output to Pin (3) of
IC
500
4
?
Is
v
o
lt
ag
e of
R
5
1
0
1
/5
1
0
2
3.3V?
Is
v
o
lt
ag
e of Pin (3) of
S
500
1
3.3V?
C
he
ck
th
a
t so
ld
er of the I
C
5003 3
2
MB
fla
sh
m
e
m
or
y
is not wet.
R
ep
la
c
e the f
la
sh or re
-up
g
ra
d
e
v
ersion of
the soft.
C
he
ck
whi
c
h is the
c
a
use
, the P
C
P
W
B
or
M
a
in P
W
B
.
(D
is
c
onne
c
t P5
1
0
2
/5
1
03
a
n
d
c
he
ck
im
pe
d
a
n
c
e of
G
n
d
-3.3V is
a
b
out
8
.9
k
Ω
)
R
einsert the so
ck
et.
T
he power
R
e
g
I
C
5003
m
a
y
b
e
d
a
m
ag
e
d
or I
C
500
1
/5
2
0
1
m
a
y
b
e
d
efe
c
ti
v
e.
(I
m
pe
d
a
n
c
e of
G
n
d
-1
.5V is
a
b
out
7
00
Ω
)
T
he so
ld
er
b
ri
d
g
e
a
t P5
1
0
2
or
d
efe
c
t of
IC
500
1
m
a
y
b
e o
cc
urrin
g
.
(I
m
pe
d
a
n
c
e of
G
n
d
-1
.5V is
a
b
out
1
9
.5
k
Ω
)
R
5
1
0
2
is
d
efe
c
ti
v
e.
R
ep
a
ir the
c
orrespon
d
in
g
p
la
c
es.
N
O
N
O
N
O
N
O
N
O
N
G
1
E
spe
c
iall
y,
c
he
ck
th
a
t Pins
(1
)(
2
4
)(
2
5)(
4
8
)
is not wet.
S
ee
F
ig
ure
4
.3.
49
TU-32GD1E
TU-37GD1E
TU-37GD1E
TROUBLE SHOOTING TABLE
(Continued)
NO
NO
NO
NO
NO
NO
NO
Output from Pin (3) of IC5605 is
3.3V or 5V
D
o
e
s Pin (
1
) of P5003 s
h
o
w
1
0V
?
IC5
1
03
a
n
d
p
e
rip
he
ral
c
ir
c
uits m
ay
b
e
d
e
fe
c
ti
v
e
, or
R
5
1
03 m
ay
b
e
da
m
ag
e
d
.
In t
he
ca
s
e
of t
h
a
t t
he
PC
ca
rd
is not op
e
ra
te
d
whe
n t
he
po
we
r is turn
e
d
on
a
ft
e
r
e
nou
g
h
l
on
g
tim
e
from t
he
turnin
g
of
f.
•F
or
,
ab
o
lis
h
R
50
1
4
0
Ω
,
a
n
d
add
a
r
e
ad
j
ump
e
r to Pin (3) of
S
500
1
a
n
d
R
50
1
4
(
la
n
d
a
t t
he
si
d
e
of Pin (
1
2
) of IC5003).
•F
rom
, t
he
P
WB
is
a
pp
licabl
e
.
C
h
a
n
g
e
R
2
5
9
3
/2
5
9
4
/2
5
9
5
/2
5
9
6 in
the
A
V P
WB
from
1
00
Ω
into
4
7
Ω
.
R
e
c
or
d
e
d
mo
v
ie
s
h
av
e
sp
lutt
e
rin
g
nois
e
.
T
he
b
uf
fe
r
c
ir
c
uit of IC560
1
t
h
ru
560
7
a
n
d
IC500
1
m
ay
b
e
d
e
fe
c
ti
v
e
.
Or t
he
PC
ca
rd
m
ay
b
e
d
e
fe
c
ti
v
e
.
T
ry
ot
he
r
ca
rd
s to
c
he
c
k
if t
he
s
a
m
e
pro
bl
e
m o
cc
urs.
A
lso
c
he
c
k
t
he
ca
rd
is r
e
adabl
e
by
PC.
YES
YES
De
fe
c
ti
v
e
c
ont
ac
t,
b
e
n
d
in
g
of pins
or t
h
a
t so
ld
e
r is not
we
t m
ay
b
e
o
cc
urrin
g
.
R
e
p
a
ir t
he
c
orr
e
spon
d
in
g
p
lac
e
s.
M
o
v
ie
s
a
re
p
lay
e
d
a
t s
lo
w
r
a
te
.
YES
YES
C
he
c
k
t
he
c
onn
e
c
tor of P500
1
.
C
he
c
k
t
h
a
t t
he
cl
o
c
k
of I
2S
l
in
e
is
inst
all
e
d
in
A
V
_
S
U
B
P
WB
-A
V
-
P
WB
-PC C
a
rd
.
Output from Pin (
2
) of IC5605 is
not
lo
we
r t
h
a
n
2
V.
YES
YES
YES
Input to Pin (
1
) of IC5605 is not
lo
we
r t
h
a
n
4
V.
IC500
1
m
ay
b
e
d
e
fe
c
ti
v
e
.
IC500
1
m
ay
b
e
d
e
fe
c
ti
v
e
.
On s
w
it
c
h
in
g
inputs
,
add
R
50
4
1
1
0
k
Ω
to t
a
k
e
m
e
a
sur
e
s for nois
e
.
T
he
A
V P
WB
m
ay
h
av
e
pro
bl
e
ms.
2
3
M
a
k
e
sur
e
t
h
a
t
ab
out
2
.7
V is
e
v
e
n
NG
.
R
e
ins
e
rt t
he
S
C560
2
ca
rd
s
lot to
c
onfirm.
50
TU-32GD1E
TU-37GD1E
TU-37GD1E
TROUBLE SHOOTING TABLE
(Continued)
NO
NO
YES
YES
YES
Confir
m the connection betw
een P8903
and SC2101, troub
leshooting about
DUNTKC481DE01 (the main circuit
PWB).
Chec
k IC8904 and per
ipher
al circuits
.
Chec
k IC8905 and per
ipher
al circuits
.
No A
udio output of digital broadcasting
Is LR A
udio output from Pins (27) and
(29) of P8903?
Is LR A
udio output to Pins (91) and (95)
of IC8905?
NO
Is the digital signal input to Pins (15) thr
u
(17) and (19) of IC8905?
Chec
k IC8801, IC8802, IC8804, IC8805,
IC8601 and per
ipher
al circuits
.
51
TU-32GD1E
TU-37GD1E
TU-37GD1E
TROUBLE SHOOTING TABLE
(Continued)
A CI card is not recogniz
ed.
Are Pins in SC9101 f
olded or crook
ed?
Is 27MHz CLK input to Pin (35) of IC9101?
Chec
k X9101 and per
ipher
al circuits
.
Replace SC9101.
NO
Are Pins (17), (18), (51) and (52) of SC9101
supplied with 5V v
oltage?
NO
NO
NO
Chec
k IC9102, IC9014, IC9001 and
per
ipher
al circuits
.
Is 3.3V v
oltage applied on the po
w
er Pin of
each of IC9101, IC9103, IC9104 and
IC9105?
Chec
k IC9101, IC9103, IC9104, IC9105 and
per
ipher
al circuits (data, address).
Chec
k IC9002 and per
ipher
al circuits
.
YES
YES
YES
YES
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