YES
YES
NO
NO
NO
YES
YES
YES
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
NO
YES
YES
YES
NO
NO
NO
Are there digital video signal inputs at pins (9)~(12), (15)~(20) of IC3201 (LVDS RECIEVER)?
Are there digital video signal outputs at pins (37)~(42), (45)~(48) of IC3202 (LVDS TRANSMITTER)?
Are digital video signals sent from pins (26)~(31), (34)~(37) of IC3301?
Check IC3301 and its peripheral circuits.
Replace the main PWB, or check between
IC3301 and IC3201.
Check IC3201,IC3202 (LVDS
TRANSMITTER) and the peripheral circuits.
Check the LCD CONTROL PWB.
External input in trouble <INPUT-3>
Is INPUT-3 selected in the input switching
menu screen?
Is there signal input at each input pin of
IC3800 (AV SWITCH)?
<Composite video signal input>
Is there signal input at pin (3) of IC3800?
<S-video signal input>
Are there Y-signal input at pin (5) and C-
signal input at pin (7) of IC3800?
Select INPUT_3 and the input signal in the
input switching menu screen.
When it cannot be selected since the characters
INPUT-3 on the menu screen are gray.
Is video signal detection functioning
normally? Check between pin (11) of
J1106 and pin (12) of IC1102.
Is S-video signal detection functioning
normally? Check between pin (6) of J1105
and pin (6) of IC3800.
Check between pin (8) of J1106 and pin (3)
of IC3800.
Check between pins (3), (4) of J1105 and
pins (5), (7) of IC3800.
<Composite video signal / S-video signal> input
<Composite video signal input> Are there VIDEO signal output at pin (60) of IC3800?
<S-video signal input> Are there Y-signal output at pin (60) and C-signal output at pin (59) of IC3800?
<Composite video signal input> Is video signal sent to pin 54 of AV_UNIT connector (FC_SC5702)?
<S-video signal input> Are Y and C signals sent to pins 54 and 52 of AV_UNIT connector (FC_SC5702)?
No video output (2) No video output when receiving UHF/VHF broadcasting
Is there video signal output at output pin
(17) of the tuner (TU1101)?
Are there video signal inputs at pin (7) of
IC1103 (LEVEL ADJ)?
Is tuner video signal supplied to pin (17) of
IC3800 (AV SWITCH)?
Check or replace the tuner's peripheral
circuits.
Are there inputs of level adjustment control
signals at pin (6) of IC1103
(LEVEL ADJ) from pin (1) of IC1105?
Check IC1105 (CONTROL) and the peripheral
circuits. Replace if necessary.
Check IC3800 (AV SWITCH) and the
peripheral circuits.
Check between IC3800 and SC5702.
(Q3802, Q3810, etc.)
<Composite video signal input> Is video signal supplied to pin (242) of IC3301 through L.P.F. consisting Q3705 and Q3710?
<S-video signal input> Are Y and C video signals supplied to pins (242) and (231) of IC3301 through L.P.F. consisting Q3705 and Q3710 and L.P.F. consisting of Q3708 and
Q3712 respectively?
Check between IC3800 and IC3301.
(Q3802, Q3810, Q3705, Q3710, etc.)/
(Q3801, Q3811, Q3708, Q3712, etc.)
<Composite video signal input> Is video signal sent to pin (7) of MAIN_UNIT connector (FC_SC3701)?
<S-video signal input> Are Y and C signals sent to pins (7) and (9) of MAIN_UNIT connector (FC_SC3701) respectively?
Check the FFC harness ÒFCÓ.
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