LC-32D42U/LC-37D42U
6 – 4
<Composite video signal/S-video signal input> No video output (2)
No video output from external input <<INPUT-2>>
Select INPUT-2 and the input signal on the input switching menu
screen.
Is INPUT-2 selected on the input switching menu screen?
NO
When INPUT-2 cannot be selected since the characters INPUT-3
on the menu
YES
Is the video signal detection function normal? Check between
J503 and pin 42 of IC501.
Is the S-video signal detection function normal? Check between
J509 and pin 2 of IC501.
Is signal fed to each input terminal of IC501 (AV SWITCH)?
<Composite video signal input>
Is video signal fed to pin 3 of IC501?
NO
Check between J509 and pin 3 of IC501.
<S-video signal input>
Are Y and C signals fed to pins 5 and 7 of IC501 respectively?
NO
Check between J503 and pins 5 and 7 of IC501.
YES
<Composite video signal input>
Is video signal sent to pin 60 of IC501?
<S-video signal input>
Are Y and C signals sent to pins 60 and 59 of IC501 respec-
tively?
NO
Check IC501 (AV SWITCH) and peripheral circuits.
YES
<Composite video signal input>
Is video signal sent to pin 2 of IF_UNIT connector (FC_SC501)?
<S-video signal input>
Are Y and C signals sent to pins 2 and 4 of IF_UNIT connector
(FC_SC501) respectively?
NO
Check between IC501 and SC501. (Q501, Q502, Q503, Q504,
etc.)
YES
<Composite video signal input>
Is video signal fed to pin 2 of MAIN_UNIT connector
(FC_SC1101)?
<S-video signal input>
Are Y and C signals fed to pins 2 and 4 of MAIN_UNIT connector
(FD_SC1101) respectively?
NO
Check the board-to-board cable “FC”.
YES
<Composite video signal input>
Is video signal fed to pin K25 of IC8101 (Broadcom) via L.P.F.
composed of Q2202 and Q2210?
<S-video signal input>
Are Y and C signals fed to pins k25 and L24 of IC8101 (Broad-
com) via L.P.F. composed of Q2202 and Q2210 and via L.P.F.
composed of Q2203 and Q2211 respectively?
NO
Check between SC1101 and IC3301. (Q2202, Q2210, etc.)/
(Q2203, Q2211, etc.)
YES
Are digital video (LVDS) signals sent from pins 37-42 and 45-48
of IC2602?
NO
Check IC2602 and peripheral circuits.
Are digital video (COMOS) signal sent from IC8101 (DVODATA 0
~ 23, DVOCLKO, DVODE, DVOHSYNC, DVOVSYNC)?
NO
Check IC8101 and peripheral circuits.
YES
Check LCD_CONTROL PWB.
Summary of Contents for LC-32D42U
Page 51: ...LC 32D42U LC 37D42U 9 2 10 11 12 13 14 15 16 17 18 19 ...
Page 54: ...LC 32D42U LC 37D42U 9 5 A C B D E F G H 1 2 3 4 5 6 7 8 9 10 MAIN Unit Side B ...
Page 55: ...LC 32D42U LC 37D42U 9 6 10 11 12 13 14 15 16 17 18 19 ...
Page 63: ...LC 32D42U LC 37D42U 10 2 2 R C LED Unit A C B D E F G H 1 2 3 4 5 6 ...
Page 64: ...LC 32D42U LC 37D42U 10 3 3 MAIN Unit MAIN Unit 1 20 A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
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Page 98: ...LC 32D42U LC 37D42U 10 37 MAIN Unit 18 20 A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
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Page 106: ...LC 32D42U LC 37D42U 10 45 AV TERMINAL Unit 2 2 A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
Page 107: ...LC 32D42U LC 37D42U 10 46 10 11 12 13 14 15 16 17 18 19 ...
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