Sharp TU-32GD1E (serv.man8) Service Manual ▷ View online
38
TU-32GD1E
TU-37GD1E
TU-37GD1E
TROUBLE SHOOTING TABLE
(Continued)
No video output (1)
No INPUT1 output of the e
xter
nal input
system.
Is "INPUT1" selected with the "INPUT
SOURCE" b
utton of the remote controller?
Chec
k Pin (20) of SCAR
T1 (SC1101) thr
u
Pins (1)(3) of IC3801.
Select "INPUT1" with the "INPUT
SOURCE" b
utton of the remote controller
,
select Option-Input Select in the MENU
panel, and then select Signal
T
ype of the
input signal.
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
Is the Composite
Video signal (CVS1) input
to input ter
minals Pins (1)(3) of IC3801 (A
V
-
SW)?
No INPUT2 output of the e
xter
nal input
system.
Is "INPUT2" selected with the "INPUT
SOURCE" b
utton of the remote controller?
Select "INPUT2" with the "INPUT SOURCE"
b
utton of the remote controller
, select
Option-Input Select in the MENU panel, and
then select Signal
T
ype of the input signal.
Chec
k Pin (20) of SCAR
T2 (SC1102) thr
u
Pins (8)(10) of IC3801.
Chec
k IC3801 (A
V
-SW) and per
ipher
al
circuits
.
Chec
k IC3801 (A
V
-SW) thr
u IC401/IC600.
Chec
k IC600 (LPF) thr
u IC601 (VPC).
Chec
k IC402 (3D-YC), IC502 (2D-YC) and
IC601 (VPC) thr
u IC3201 (L
VDS_TX), or
replace the main PWB
.
Chec
k IC3201 (L
VDS_TX) and per
ipher
al
circuits
.
Chec
k IC3201 thr
u SC3200.
YES
YES
YES
YES
Is the Composite
Video signal (CVS2) input
to input ter
minals Pins (8)(10) of IC3801 (A
V
-
SW)?
<On input of the Composite
Video signal>
Are MAIN-Video signal and SUB-Video signal output to Pins (56) and (44) of IC3801 (A
V
-SW) respectiv
ely?
<On input of the Composite
Video signal>
Are MAIN-Video signal and SUB-Video signal input to Pin (8) of IC401 (LPF) and Pin (2) of IC600 (LPF) respectiv
ely?
Is the
VIDEO signal input to input ter
minals
of Pin (8) of IC402 (3D-YC) and Pin (16) of
IC502 (2D-YC)?
(MAIN Video
System)
Is the digital video signal output from Pins
(124) thr
u (133) of IC402 and Pins (115) thr
u
(126) of IC502?
Are the digital video signal and H/V
-SYNC signal input to Pins (51) thr
u (78) and Pins (7) thr
u (10) of IC3201 (L
VDS_TX) respec
tiv
ely?
Is the digital video signal output to Pins (39) thr
u (49) of IC3201 (L
VDS_TX)?
Is the digital video signal output to Pins (3) thr
u (15) of L
V
Connector SC3200?
No prob
lem in the MAIN PWB
. Chec
k the
TMDS PWB
.
Is the input/output signal of Pins (9) thr
u (20) of IC3105 ~ Pins (21) thr
u (31) of IC3101 in the
TMDS PWB nor
mal?
Are the Connector SC3102 of DISPLA
Y_OUTPUT1 and the SYSTEM_CABLE nor
mal?
Chec
k the LCD_DISPLA
Y par
t.
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
Chec
k IC401 (LPF) thr
u IC402 (3D-
YC)/IC502 (2D-YC).
NO
Chec
k IC402 (3D-YC), IC502 (2D-YC) and
per
ipher
al circuits
.
NO
YES
YES
Is the
VIDEO signal input to the input
ter
minal Pin (72) of IC601 (VPC)?
(SUB Video
System)
Is the digital video signal output from Pins
(41) thr
u (50) of IC601?
Chec
k IC601 (VPC) and per
ipher
al circuits
.
Chec
k the input/output signal of
IC3105/IC3101 in the
TMDS PWB and
per
ipher
al circuits
.
Chec
k the Connector SC3102 of
DISPLA
Y_OUTPUT1 and the
SYSTEM_CABLE.
39
TU-32GD1E
TU-37GD1E
TU-37GD1E
TROUBLE SHOOTING TABLE
(Continued)
No video output (2)
No INPUT3 output of the e
xter
nal input
system.
<On input of the Composite
Video signal and COMPONENT>
Is "INPUT3" selected with the "INPUT
SOURCE" b
utton of the remote controller?
Chec
k Pin (41) of INPUT3 (SC1102) thr
u
Pins (15)(17) of IC3801.
Chec
k Pins (3)(8)(12) of the INPUT3-
COMPONENT ter
minal thr
u Pins
(15)(17)(19) of IC3805.
Select "INPUT3" with the "INPUT
SOURCE" b
utton of the remote controller
,
select Option-Input Select in the MENU
panel, and then select Signal
T
ype of the
input signal.
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
Is the Composite
Video signal (CVS3) input
to input ter
minals Pins (15)(17) of IC3801
(A
V
-SW)?
<COMPONENT
Video signal input>
Is the
Y/PB/PR signal input to Pins
(15)(17)(19) of IC3805?
No INPUT4 output of the e
xter
nal input
system.
Is "INPUT4" selected with the "INPUT
SOURCE" b
utton of the remote controller?
Select "INPUT4" with the "INPUT SOURCE"
b
utton of the remote controller
, select
Option-Input Select in the MENU panel, and
then select Signal
T
ype of the input signal.
Chec
k IC3801 (A
V
-SW) and per
ipher
al
circuits
.
Chec
k IC3801 (A
V
-SW) thr
u IC401/IC600.
Chec
k IC600 (LPF) thr
u IC601 (VPC).
Chec
k IC402 (3D-YC), IC502 (2D-YC) and
IC601 (VPC) thr
u IC3201 (L
VDS_TX), or
replace the main PWB
.
Chec
k IC3201 (L
VDS_TX) and per
ipher
al
circuits
.
Chec
k IC3201 thr
u SC3200.
YES
YES
YES
YES
<On input of the Composite
Video signal> Are the MAIN
Video signal and the SUB
Video signal output to Pin (56) and Pin (44) of
IC3801 (A
V
-SW) respectiv
ely?
<On input of the S-Video signal> Are the MAIN-Y and MAIN-C signal output to Pin (56) and Pin (58) of IC3801 (A
V-SW) respectiv
el
y,
and are the SUB-Y and SUB-C signal output Pin (44) and Pin (47) respectiv
ely?
<On input of the Composite
Video signal> Are the MAIN
Video signal and the SUB
Video signal input to Pin (8) of IC401 (LPF) and
Pin (2) of IC600 (LPF) respectiv
ely?
<On input of the S-Video signal> Are the MAIN-Y and MAIN-C signal input to Pin (8) and Pin (11) of IC401 (LPF) respectiv
ely
, an
d are the SUB-Y and SUB-C signal input Pin (2) and Pin (6) of IC600 (LPF) respectiv
ely?
Is the
VIDEO signal input to the input ter
minals of Pin
(8) of IC402 (3D-YC) and Pin (16) of IC502 (2D-YC)?
<On input of the S-Video signal> Are the
Y and C
signal input to Pin (8) and Pin (18) of IC402
respectiv
ely
, and are the
Y and C signal input to Pin
(16) and Pin (12) of IC502 respectiv
ely?
(MAIN Video
System)
Is the digital video signal output from Pins
(124) thr
u (133) of IC402 and Pins (115) thr
u
(126) of IC502?
Are the digital video signal and the H/V
-SYNC signal input to Pins (51) thr
u (78) and Pins (7) thr
u (10) of IC3201 (L
VDS_TX) re
spectiv
ely?
Is the digital video signal output to Pins (39) thr
u (49) of IC3201 (L
VDS_TX)?
Is the digital video signal output to Pins (3) thr
u (15) of the L
V
Connector SC3200?
No prob
lem in the MAIN PWB
. Chec
k the
TMDS PWB
.
Is the input/output signal of Pins (9) thr
u (20) of IC3105 ~ Pins (21) thr
u (31) of IC3101 in the
TMDS PWB nor
mal?
Are the Connector SC3102 of DISPLA
Y_OUTPUT1 and SYSTEM_CABLE nor
mal?
Chec
k the LCD_DISPLA
Y par
t.
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
Chec
k INPUT4 and Pin (2) of RCA pin
(J2404) thr
u Pin (22) of IC3801.
Chec
k INPUT4 and Pins (3)(4) of the S-
T
e
rminal (J2401) thr
u the input ter
minal
Pins (24)(26)(28) of IC3801 (A
V
-SW).
Is the
Video signal (V4-V) input to the input
ter
minal Pin (22) of IC3801 (A
V
-SW)?
<S-Video signal input>
Is the
Y/C signal input to the input ter
minal
Pins (24)(26)(28) of IC3801 (A
V
-SW)?
NO
NO
Chec
k IC401 (LPF) thr
u IC402 (3D-
YC)/IC502 (2D-YC).
NO
Chec
k IC402 (3D-YC), IC502 (2D-YC) and
per
ipher
al circuits
.
NO
YES
YES
Is the
VIDEO signal input to the input
ter
minal Pin (72) of IC601 (VPC)?
<On input of the S-Video signal> Are the
Y
and C signal input to Pin (72) and Pin (71) of
IC601 respectiv
ely?
(SUB Video
System)
Is the digital video signal output from Pins
(41) thr
u (50) of IC601?
Chec
k IC601 (VPC) and per
ipher
al circuits
.
Chec
k the input/output signal of
IC3105/IC3101 in the
TMDS PWB and
per
ipher
al circuits
.
Chec
k the Connector SC3102 of
DISPLA
Y_OUTPUT1 and SYSTEM_CABLE.
40
TU-32GD1E
TU-37GD1E
TU-37GD1E
TROUBLE SHOOTING TABLE
(Continued)
(MAIN V
ideo System)
(S
UB
V
ideo System)
No video output (3)
Set
-up
C
o
nf
ir
m
a
tio
n
:
1
) A
re t
h
e i
npu
t te
rmi
nal
i
n
t
h
e
back
side o
f AV
C-
System
an
d
"IN
P
U
T
S
O
U
RCE"
o
f t
h
e
remote
c
o
n
tr
o
lle
r set
up
c
o
rr
e
c
tl
y
?
···
See t
h
e
Op
e
ra
tio
n
M
anual
an
d set
up
"
IN
P
U
T
S
O
U
RCE"
c
o
rr
e
c
tl
y.
2
) Is
"A
u
dio
Onl
y
" i
n
M
E
N
U
-Op
tio
n
set
"Of
f"?
···
Set it
"Of
f".
Is t
h
e
re
v
ideo si
g
nal
(
C
V
B
S) o
u
tpu
t
a
t
p
in
(1
7
) o
f
Tu
n
e
r (V
ideo o
u
tpu
t te
rmi
nal
)?
Tu
n
e
r (
U
/V) i
n
t
ro
ubl
e
.
<
On
i
npu
t o
f t
h
e t
un
e
r (
U
/V)
>
Is t
h
e
re
v
ideo si
g
nal
i
npu
t
a
t
p
in
(
7
) o
f
IC1
1
06
?
Is t
h
e
re
v
ideo si
g
nal
o
u
tpu
t
a
t
p
in
(
5
) o
f
IC1
1
06
?
Is t
h
e
re
v
ideo si
g
nal
i
npu
t
a
t
p
in
(
6
3
) o
f
IC
38
0
1
(A
V
-S
W
)?
YES
YES
YES
YES
YES
YES
YES
A
re t
h
e MAIN
-Y
an
d S
UB
-Y
si
g
nal
o
u
tpu
t to
P
in
(
5
6
)
an
d
P
in
(
44
) o
f I
C
38
0
1
r
es
p
e
c
ti
v
e
ly
?
Is t
h
e VI
D
EO
si
g
nal
i
npu
t to i
npu
t te
rmi
nal
s
o
f
P
in
(
8
) o
f I
C
4
0
2
(
3
D
-Y
C
)
an
d
P
in
(
1
6
) o
f
IC
5
0
2
(
2
D
-Y
C
)?
On
an
d
af
te
r t
h
is
, see t
h
e te
rm (
1
) i
n
"
No
v
ideo o
u
tpu
t".
On
an
d
af
te
r t
h
is
, see t
h
e te
rm (
1
) i
n
"
No
v
ideo o
u
tpu
t".
Ch
e
ck
b
et
w
ee
n
I
C1
1
06
an
d I
C
38
0
1.
Ch
e
ck
t
h
e t
un
e
r
an
d its
p
e
ri
ph
e
ral
c
ircu
its
.
Ch
e
ck
I
C
4
0
1
(
L
P
F
) t
hru
I
C
4
0
2
(
3
D
-
Y
C
)/
IC
5
0
2
(
2
D
-Y
C
).
NO
NO
NO
NO
NO
Is t
h
e VI
D
EO
si
g
nal
i
npu
t to t
h
e i
npu
t
te
rmi
nal
P
in
(
7
2
) o
f I
C
60
1
(V
PC
)?
Ch
e
ck
I
C
38
0
1
(A
V
-S
W
)
an
d
p
e
ri
ph
e
ral
c
ircu
its
.
Ch
e
ck
P
in
s (
5
6
)(
44
) o
f I
C
38
0
1
t
hru
IC
4
0
1
/600
.
Ch
e
ck
I
C
600
(
L
P
F
) t
hru
I
C
60
1
(V
PC
).
NO
NO
NO
A
re t
h
e MAIN
-Y
an
d S
UB
-Y
si
g
nal
i
npu
t to
P
in
(
2
) o
f I
C
4
0
1
an
d
P
in
(
2
) o
f I
C
600
r
es
p
e
c
ti
v
e
ly
?
Ch
e
ck
b
et
w
ee
n
t
h
e t
un
e
r
an
d I
C1
1
06
.
Ch
e
ck
I
C1
1
06
an
d its
p
e
ri
ph
e
ral
c
ircu
its
.
41
TU-32GD1E
TU-37GD1E
TU-37GD1E
TROUBLE SHOOTING TABLE
(Continued)
No video output (4)
Set-up Confirmation :
1)
Are the input terminal in the backside of
A
VC-System and "INPUT
SOURCE" of the remote controller set up correctly? ···See th
e Operation Manual and set up "INPUT
SOURCE" correctly
.
2) Is "Audio Only" in MENU-Option set "Of
f"? ···Set it "Of
f".
Is the VI
D
EO si
g
nal output to
D
ISP
L
A
Y
-
OUTPUT1
(SC
3
1
0
2)?
No
v
ideo output to the Monitor
.
<
On input of the tuner
/e
x
ternal source
>
Is the connection of the System cable
(WH
ITE) normal?
Monitor Side : Is the VI
D
EO si
g
nal input to
the
D
VI-Connector
(SC22
0
1)?
See the term of "No
v
ideo output" in
MONIT
OR-T
roubleshootin
g
.
YES
YES
NO
NO
YES
YES
Confirm IC
3300
/IC
8
0
2 on and before the
circuit of IC
3
2
0
1.
And see "No
v
ideo output
(1)
/(
2)" in
T
roubleshootin
g
.
In the
TM
D
S P
W
B
: Is the VI
D
EO si
g
nal
comin
g
to the
L
V
-Connector?
NO
YES
YES
In the
TM
D
S P
W
B
: Check IC
3
1
0
1
/IC
3
1
0
5
and peripheral circuits.
In the MAIN P
W
B
: Check IC
3
2
0
1 and
peripheral circuits.
Is the VI
D
EO si
g
nal input to IC
3
2
0
1
(TM
D
S
_
T
X
)?
Click on the first or last page to see other TU-32GD1E (serv.man8) service manuals if exist.