Sharp LC-32D62U User Manual

LC-32D62U/LC-37D62U 1st
6 – 1
LC-32D62U/LC-37D62U 1st
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]
Is INPUT-1 selected on the
input select menu screen? Is
the INPUT-SELECT for the
input signal?
NO Select INPUT-1 on the input
select menu screen for the
right input signal.
Is INPUT-2 selected on the
input select menu screen?
NO Select INPUT-2 on the input
select menu screen.
YES YES
Does the INPUT-1 V2.PLUG
detection function?
Does the INPUT-2 V3.PLUG
detection function?
Check the line between pin
(6) of input terminal (J508)
and pin (76) of IC501
(AV_SWITCH).
Check the line between pin
(6) of input terminal (J509)
and pin (2) of IC501
(AV_SWITCH).
Is there the COMPOSITE
video signal input at pin (71)
of IC501 (AV_SWITCH)?
NO Check the line between pin
(7) of J508 and pin (71) of
IC501.
Is there the COMPOSITE
video signal input at pin (3)
of IC501 (AV_SWITCH)?
NO Check the line between pin
(7) of J509 and pin (3) of
IC501.
YES YES
Is there the COMPOSITE video signal output at pin (60) of IC501? NO Check IC501 and its periph-
eral circuits.
YES
Is there the COMPOSITE video signal output at pin (2) of connector (SC501) on the TERMINAL unit? NO Check the line between
IC501 and SC501 (Q501
thru Q504, etc.).
YES
Is there the COMPOSITE video signal input at pin (2) of connector (SC1101) on the MAIN unit? NO Check the SC501 and
SC1101 connectors.
YES
Is there the COMPOSITE video signal input at pins (M4, N4) 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
peripheral control circuits
(IC3501, IC3502, IC8101,
etc.).
YES
Check the panel module.

Sharp LC-32D62U Specifications

General

Brand	Sharp
Model	LC-32D62U
Category	LCD TV
Language	English