Read Sharp LC-45GD1E (serv.man29) Service Manual online
54
TU-45GD1E
LC-45GD1E
LC-45GD1E
TROUBLE SHOOTING TABLE
(Continued)
(MAIN V
ideo System)
(SUB V
ideo System)
No picture (3)
Set-up Confirmation :
1)
Are the input terminal in the backside of
A
V
C-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 there video signal (CVBS) output at pin
(17) of
T
uner (V
ideo output terminal)?
V
ideo output missing at tuner (U/V) reception?
<On input of the tuner (U/V)>
Is there video signal input at pin (7) of
IC1
106?
Is there video signal output at pin (5) of
IC1
106?
Is there video signal (CVBS) input at pin (63)
of IC3801 (A
V
-SW)?
YES
YES
YES
YES
YES
YES
YES
Are the MAIN-Y
and SUB-Y
signal output to Pin (56) and Pin (44) of IC3801 respectively?
Is the VIDEO signal input to input terminals
of Pin (8) of IC402 (3D-YC) and Pin (16) of
IC502 (2D-YC)?
On and after this, see the term (1) in "No picture".
On and after this, see the term (1) in "No picture".
Check between IC1
106 and IC3801.
Check the tuner and its peripheral circuits.
Check IC401 (LPF) thru IC402 (3D-
YC)/IC502 (2D-YC).
NO
NO
NO
NO
NO
Is the VIDEO signal input to the input
terminal Pin (72) of IC601 (VPC)?
Check IC3801 (A
V
-SW) and peripheral
circuits.
Check Pins (56)(44) of IC3801 thru
IC401/600.
Check IC600 (LPF) thru IC601 (VPC).
NO
NO
NO
Are the MAIN-Y
and SUB-Y
signal input to Pin (8) of IC401 and Pin (2) of IC600 respectively?
Check between the tuner and IC1
106.
Check IC1
1
06 and its peripheral circuits.
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