Table of Contents
Advertisement
LC-52SE94U/LC-52SE941U/LC-65SE94U
CHAPTER 6.
LC-52SE94U/LC-52SE941U/LC-65SE94U
TROUBLE SHOOTING TABLE
[1] TROUBLE SHOOTING TABLE
COMPOSITE: No external input video
[INPUT-1]
Is INPUT-1 selected on the input select
menu screen?
NO
Select INPUT-1 on the input
select menu screen for the
right input signal.
Does the INPUT-1 V3_PLUG
detection function?
Check the line between pin(7)
of input terminal(J501) and
pin(37) of IC501(AV_SW).
YES
Is there the COMPOSITE signal input at
pin(38) of IC501(AV_SW)?
NO
Check the line between pin(6)
of J501 and pin(38) of IC501.
YES
Is there the COMPOSITE video signal output at pin(30) of IC501?
Is there the COMPOSITE video signal output at pin(59) of connector(SC501) on the TER-
MINAL unit?
Is there the COMPOSITE video signal input at pin(59) of connector(SC2203) on the MAIN
unit?
Is there the COMPOSITE signal input at pin(AN16) of IC8001(CPU)?
Are the LVDS signal outputs at the LVDS 1st channel and 2nd channel of IC8001?
LVDS_TX_0_DATA0_P/N(C7/B7), LVDS_TX_0_DATA1_P/N(E7/D7),
LVDS_TX_0_DATA2_P/N(C6/B6), LVDS_TX_0_DATA3_P/N(C5/B5),
LVDS_TX_0_DATA4_P/N(E5/D5), LVDS_TX_0_CLK_P/N(E6/D6),
LVDS_TX_1_DATA0_P/N(B4/A4), LVDS_TX_1_DATA1_P/N(E4/D4),
LVDS_TX_1_DATA2_P/N(B3/A3), LVDS_TX_1_DATA3_P/N(B1/B2),
LVDS_TX_1_DATA4_P/N(F5/F6), LVDS_TX_1_CLK_P/N(C2/C3),
Check the panel module.
No video (1)
COMPOSITE: No external input video
[INPUT-2]
Is INPUT-2 selected on the input select
menu screen?
Select INPUT-2 on the
input select menu screen
for the right input signal.
Does the INPUT-2
V2_PLUG detection func-
tion?
Check the line between
pin(7) of input termi-
nal(J503) and pin(35) of
IC501(AV_SW).
YES
Is there the COMPOSITE signal input at
pin(36) of IC501(AV_SW)?
Check the line between
pin(6) of J503 and pin(36)
of IC501.
YES
YES
YES
YES
YES
YES
6 – 1
Service Manual
COMPOSITE: No external input video
Is INPUT-3 selected on the input select menu
screen?
NO
YES
Is there the COMPOSITE signal input at pin(34)
of IC501(AV_SW)?
NO
YES
Check IC501 and its peripheral circuits.
NO
Check the line between IC501 and SC501.
(Q501 and Q502, etc.)
NO
Check the line between SC501 and SC2203
connectors.
NO
Check the line between SC2203 and IC8001.
(Q2216, etc.)
Check IC8001 and its peripheral circuits.
(IC8151 thru IC8154, etc.)
NO
[INPUT-3]
NO
Select INPUT-3 on the input
select menu screen for the right
input signal.
Does the INPUT-1 V1_PLUG
detection function?
Check the line between pin(7) of
input terminal(J901) and pin(33)
of IC501(AV_SW).
J901 pin(7)
P901 pin(7)
P501 pin(7)
IC501 pin(33)
NO
Check the line between pin(6) of
J901 and pin(34) of IC501.
J901 pin(6)
P901 pin(5)
P501 pin(5)
IC501 pin(34)
NO
Advertisement
Table of Contents
