LC-52SE94U/LC-52SE941U/LC-65SE94U
6 – 1
LC-52SE94U/LC-52SE941U/LC-65SE94U
Service Manual
CHAPTER 6.
TROUBLE SHOOTING TABLE
[1] TROUBLE SHOOTING TABLE
No video (1)
COMPOSITE: No external input video
[INPUT-1]
COMPOSITE: No external input video
[INPUT-2]
COMPOSITE: No external input video
[INPUT-3]
Is INPUT-1 selected on the input select
menu screen?
Is INPUT-2 selected on the input select
menu screen?
Is INPUT-3 selected on the input select menu
screen?
YES
NO
YES
NO
YES
NO
Select INPUT-1 on the input
select menu screen for the
right input signal.
Select INPUT-2 on the
input select menu screen
for the right input signal.
Select INPUT-3 on the input
select menu screen for the right
input signal.
Does the INPUT-1 V3_PLUG
detection function?
Does the INPUT-2
V2_PLUG detection func-
tion?
Does the INPUT-1 V1_PLUG
detection function?
Check the line between pin(7)
of input terminal(J501) and
pin(37) of IC501(AV_SW).
Check the line between
pin(7) of input termi-
nal(J503) and pin(35) of
IC501(AV_SW).
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)
Is there the COMPOSITE signal input at
pin(38) of IC501(AV_SW)?
Is there the COMPOSITE signal input at
pin(36) of IC501(AV_SW)?
Is there the COMPOSITE signal input at pin(34)
of IC501(AV_SW)?
YES
NO
YES
NO
YES
NO
Check the line between pin(6)
of J501 and pin(38) of IC501.
Check the line between
pin(6) of J503 and pin(36)
of IC501.
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)
Is there the COMPOSITE video signal output at pin(30) of IC501?
YES
NO
Check IC501 and its peripheral circuits.
Is there the COMPOSITE video signal output at pin(59) of connector(SC501) on the TER-
MINAL unit?
NO
Check the line between IC501 and SC501.
(Q501 and Q502, etc.)
YES
Is there the COMPOSITE video signal input at pin(59) of connector(SC2203) on the MAIN
unit?
NO
Check the line between SC501 and SC2203
connectors.
YES
Is there the COMPOSITE signal input at pin(AN16) of IC8001(CPU)?
NO
Check the line between SC2203 and IC8001.
(Q2216, etc.)
YES
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),
NO
Check IC8001 and its peripheral circuits.
(IC8151 thru IC8154, etc.)
YES
Check the panel module.
