DOWNLOAD Sharp TU-37GD1E (serv.man8) Service Manual ↓ Size: 249.36 KB | Pages: 19 in PDF or view online for FREE

Model
TU-37GD1E (serv.man8)
Pages
19
Size
249.36 KB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD / Trouble shooting table
File
tu-37gd1e-sm8.pdf
Date
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41
TU-32GD1E
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
)?
42
TU-32GD1E
TU-37GD1E
TROUBLE SHOOTING TABLE
 (Continued)
No video output (5)
Is OSD including the men
u and the list of 
prog
rams displa
y
ed in the panel?
No digital broadcasting displa
y
ed in the 
panel of the liquid cr
ystal 
TV
.
<On input of the digital tuner>
NO
Is the digital signal including Data and CLK 
output to Pins (2-11)(13) of P8903?
NO
Chec
k P8903 thr
u IC8601, IC8601, IC8801 
thr
u 8802, IC8804 thr
u 8805 and per
ipher
al 
circuits
.
Are there no prob
lems with v
oltage at Pin (2) 
of 
TU9001 (5V) and Pin (50) and Pin (64) of 
IC9008 (1.8V and 3.3V respectiv
ely)?
Is v
oltage at Pin (2)(3) of P9001 not lo
w
er 
than 10V?
NO
NO
Chec
k the PWB (RDENCA064WJZZ).
Is the D
VI-IN signal input to Pins (190-200) 
of IC402 (3D-YC)?
NO
Chec
k IC402 thr
u SC2101.
NO
Confir
m per
ipher
al circuits of 
TU9001, and 
tr
y to replace 
TU9001.
Chec
k IC9001 thr
u 9002, IC9009 thr
u 9014, 
IC9004 and per
ipher
al circuits
.
Is the 
VIDEO signal output to Pins (124-
133) of IC402?
NO
Chec
k IC402 and per
ipher
al circuits
.
YES
YES
YES
YES
YES
YES
Is 4MHz CLK output from Pin (10) of 
TU9001?
Chec
k the signal of 
TU9001 thr
u IC9008 
and IC8601 thr
u IC9008, and per
ipher
al 
circuits
.
YES
Chec
k circuits IC802/IC3350/IC3201 and 
per
ipher
al ones
.
No video output (6)
Is the CVBS signal output from Pin (24) of 
P8903?
No digital broadcasting video output to the 
Monitor/Record ter
minal.
<On input of the digital tuner>
NO
Is the DTV
-CVBS signal input to Pin (60) of 
IC3801 (A
V
-SV)?
Chec
k the MA-Connector (P3802)(P7201) 
and the connection of B/B (SC2101)(P8903).
NO
NO
NO
Chec
k IC8905 and per
ipher
al circuits
.
NO
Confir
m IC3801 and per
ipher
al circuits
.
YES
Is the digital signal including Data and CLK 
input to Pins (69) thr
u (79) of IC8905?
NO
Chec
k IC8801 thr
u 8802, IC8804 thr
u 8805, 
IC8601 and per
ipher
al circuits
.
YES
YES
YES
Are the MAIN-Y and SUB-Y signal output to 
Pin (56) and Pin (44) of IC3801 (A
V
-SV) 
respectiv
ely?
Is the 
VIDEO signal output to DISPLA
Y
-
OUTPUT1 (SC3102)?
See the ter
m of "No video output to the 
Monitor".
43
TU-32GD1E
TU-37GD1E
TROUBLE SHOOTING TABLE
 (Continued)
NO
NO
NO
NO
NO
NO
Are the R/G/B and DTV-H/V signal 
input from Pins (25)(26)(27) and Pins 
(28)(8) of INPUT5=DVI Connector 
(SC1900) respectively?
Is the DVI-H/V signal output from 
Pins (4)(6) of IC1904 (INV)?
Are the DVI-SR/SG/SB and the DVI-
H/V signal output from the MD 
Connector (P1900)?
Are outputs at pins (12) and (14) of 
IC1917 both (L, L)?
Check PC settings.
Check IC1911 and its 
peripheral circuits.
Check IC1917 and its 
peripheral circuits.
Check IC1904 and its 
peripheral circuits.
Check IC1901, IC1903 and 
their peripheral circuits.
Do pins (12) and (14) become (H, H) 
when digital PC mode is entered?
NO
YES
YES
YES
YES
YES
Check Pins (1)(2) of IC1917 thru Pins 
(8)(9) of the ME Connector signal line.
Are IC1911 data accessed by I2C 
when connected to PC?
Are the DVI-SR/SG/SB and the DVI-
H/V signal input to Pins 
(126)(136)(141) of IC3700 (ADC) and 
Pins (2)(5) of IC3701 (SYNC_SEL) in 
the MAIN-PWB respectively?
Check MD harness for 
disconnection.
YES
Check IC3700 (ADC), IC3701 (SYNC-
SEL) and their peripheral circuits.
YES
DVI Input (Analog AV mode)
44
TU-32GD1E
TU-37GD1E
TROUBLE SHOOTING TABLE
 (Continued)
NO
NO
NO
NO
NO
NO
Are the R/G/B and DTV-H/V signal 
input from Pins (25)(26)(27) and Pins 
(28)(8) of INPUT5=DVI Connector 
(SC1900) respectively?
Is the DVI-H/V signal output from 
Pins (4)(6) of IC1904 (INV)?
Are the DVI-SR/SG/SB and the DVI-
H/V signal output from the MD 
Connector (P1900)?
Are outputs at pins (12) and (14) of 
IC1917 both (H, L)?
Check PC settings.
Check IC1915 and its 
peripheral circuits.
Check IC1917 and its 
peripheral circuits.
Check IC1904 and its 
peripheral circuits.
Check IC1901, IC1903 and 
their peripheral circuits.
Do pins (12) and (14) become (L, H) 
when digital AV mode is entered?
NO
YES
YES
YES
YES
YES
Check Pins (1)(2) of IC1917 thru Pins 
(8)(9) of the ME Connector signal line.
Are IC1915 data accessed by I2C 
when connected to PC?
Are the DVI-SR/SG/SB and the DVI-
H/V signal input to Pins 
(126)(136)(141) of IC3700 (ADC) and 
Pins (2)(5) of IC3701 (SYNC_SEL) in 
the MAIN-PWB respectively?
Check MD harness for 
disconnection.
YES
Check IC3700 (ADC), IC3701 (SYNC-
SEL) and their peripheral circuits.
YES
DVI Input (Analog PC mode)
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