Sharp AQUOS LC-32D62U, Service Manual

Page: 34 / 162

LC-32D62U/LC-37D62U 1st
6 – 2
No video (2)
COMPONENT: No external input video
[INPUT-1]
COMPONENT: No external input video
[INPUT-3]
S-VIDEO: No external input video
[INPUT-2]
Is INPUT-1 selected on the input select
menu screen? Is the INPUT-SELECT for the
input signal? Is INPUT-3 selected on the input select
menu screen? Is the INPUT-SELECT for the
input signal? Is INPUT-2 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-3 on the input
select menu screen for the right
input signal.
Does the INPUT-1 C2.PLUG
detection function? Does the INPUT-3 C1.PLUG
detection function? Does the INPUT-2 S3.PLUG
detection function?
Check the line between pin (6)
of input terminal (J502) and pin
(40) of IC501 (AV_SWITCH). Check the line between pin (6)
of input terminal (J507) and pin
(38) of IC501 (AV_SWITCH). Check the line between pin (6)
of input terminal (J503) and pin
(42) of IC501 (AV_SWITCH).
Is there the COMPONENT video signal
input at pins (27) (Y) / (29) (PB) and (31)
(PR) of IC501 (AV_SWITCH)? Is there the COMPONENT video signal input
at pins (21) (Y) / (23) (PB) and (25) (PR) of
IC501 (AV_SWITCH)? Is there the S-VIDEO signal input at pins (5)
(Y) and (7) (C) of IC501 (AV_SWITCH)?
YES
NO
YES
NO
YES
NO
Check the line between the
input terminals of J502 and
IC501. Check the line between the
input terminals of J507 and
IC501. Check the line between pins (3)
(Y) / (4) (C) of J503 and pins (5)
/ (7) of IC501.
Is there the COMPONENT video signal output at pins (60) (Y) / (59) (PB) and (58) (PR) of
IC501?
YES
NO
Check IC501 and its peripheral
circuits.
[COMPOSITE signal input] Is there the COMPONENT video signal output at pins (2), (4) and (6) of connector (SC501) on the TERMINAL unit?
[S-VIDEO signal input] Is there the video signal output at pins (2) (Y) and (4) (C) of connector (SC501) on the TERMINAL unit?
YES
NO
Check the line between IC501
and SC501 (Q501 thru Q504,
etc.).
[COMPOSITE signal input] Is there the COMPONENT video signal input at pins (2), (4) and (6) of
connector (SC1101) on the MAIN unit? NO Check the SC501 and SC1101
connectors.
[S-VIDEO signal input] Is there the video signal input at pins (2) (Y) and (4) (C) of connector
(SC1101) on the MAIN unit?
YES
[COMPOSITE signal input] Is there the COMPONENT video signal input at pins (U3) (Y) / (AA1)
(PB) and (W3) (PR) of IC3301 (VPC)? NO Check the line between
SC1101, IC3301 and its periph-
ery circuits.
[S-VIDEO signal input] Is there the video signal input at pins (M4, N4) (Y) and (T1) (C) of IC3301
(VPC)? NO Check the line between SC1101
and IC3301 (Q2201 thru
Q2203, Q2205, Q2207. Q2209,
etc.).
YES
Is there the LVDS signal output at the LVDS 1st channel and 2nd channel of IC3301?
TA2_P/M (AJ30/AK30), TB2_P/M (AJ29/AK29), TC2_P/M (AJ28/AK28), TD2_P/M (AJ26/AK26),
TE2_P/M (AJ25/AK25), TCLK2_P/M (AJ27/AK27), TA1_P/M (AB29/AB30), TB1_P/M (AC29/
AC30), TC1_P/M (AD29/AD30), TD1_P/M (AF29/AF30), TE1_P/M (AG29/AG30), TCLK1_P/M
(AE29/AE30) NO Check IC3301 and its periph-
eral control circuits (IC3501,
IC3502, IC8101, etc.).
YES
Check the panel module.