Sharp AQUOS LC-32D62U, Service Manual

Page: 35 / 162

LC-32D62U/LC-37D62U 1st
6 – 3
No video (3)
No video at UHF/VHF broadcast signal reception No video at digital broadcast signal reception
Is the specified TV signal selected on the input select menu screen?
Is there the analog video
signal output at the output
pin (13) of tuner (TU1101)? NO Check the tuner, IC8601
(DE-MODULATOR) and
their peripheral circuits
(TUN_SDA/SCL, Q8601). Is there the video signal out-
put at the output pins (20)
and (21) of tuner (TU1101)? NO Check the tuner, IC8601
(DE-MODULATOR) and
their peripheral circuits
(TUN_SDA/SCL, Q8601).
YES YES
Is there the video signal out-
put at pin (5) of IC1103
(LEVEL_ADJ)? NO Does the level adjustment
control signal come from pin
(6) of IC1103 to pin (1) of
IC1104? Are there the MPEG signal
outputs (US_TS_PKTSYNC,
US_TS_EN, US_TS_DATA
and US_TS_CLK) from
IC8601? NO Check IC8601 and its
peripheral control circuits.
YES
NO
YES
Check IC1104 and its
peripheral circuits. Replace
as required.
Is there the CVBS3 signal
input at pin (N3) of IC3301
(VPC)? NO Check the line between
IC1103 and IC3301 (Q2204,
Q2208, etc.). Are there the MPEG signal
inputs (US_TS_PKTSYNC,
US_TS_EN, US_TS_DATA
and US_TS_CLK) at IC8101
(CPU/DECODER)? NO Check the line between
IC8601 and IC8101.
YES
YES
Are there the MVY [7:0],
MVC [7:0] and MVCLKO/
MNSYNCO/MVSYNCO sig-
nal outputs from IC8101? NO Check IC8101 and its
peripheral circuits.
YES
Are there the MVY [7:0],
MVC [7:0] and MVCLKO/
MNSYNCO/MVSYNCO sig-
nal inputs at IC3301? NO Check the line between
IC8101 and IC3301.
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)
YES NO
Check the panel module. Check IC3301 and its peripheral control circuits (IC3501, IC3502,
IC8101, etc.).