Sharp LC-37XD1E, Service Manual

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LC-37XD1E/RU
4 – 11
<Durlng external connectlon> No picture on the monitor (2) -2
SCART2:
No picture from EXT3 appears on EXT2- connected monitor.
Checklist:
1) Are input terminal on back of TV and "INPUT SOURCE"button on the remote control set up correctly ? ... See the operation manual and
set "INPUT SOURCE "appropriately.
2) Is the Signal Type (item) in MENU-Connection-Input-Select set to the same as that of the external device ? ... Set it to "CVBS", "Y/C" or
"RGB".
3) Is ANT-CABLE disconnected or connected improperly? ... Connect it correctly as per the operation manual.
4) The picture is sent to the monitor in a CVBS signal if the source during display is TV , CVBS or Y/C of EXT1-3. When sent by component, etc.,
that signal is not sent to the monitor.
5) When the monitor picture is not sent and is not displayed on the monitor, refer to “No picture” for each terminal.
6) The video output from EXT1 is not the monitor output (output of the picture now watching). The picture of the last selected TV channel is
always sent to EXT1. (Specification).
Is video signal sent to pin (40) of
SCART2 (J1101)? YES Check SCART2, external con-
nection or input setting.
NO
Is video signal (V- OUT2) sent
from pin (2) of IC1101 (SW)? YES Check SCART2 (J1101) and
peripheral circuits.
NO
Is video signal (V- OUT2) sent
from pin (Y20) of IC3002
(V-PRO.) ? YES Check IC1101(SW), Connector
(P1102,SC2703) and peripheral
circuits.
NO
Is video signal (IN3Y) from EXT3
sent to pin (AB20) of IC3002 (V-
PRO.)? YES Check power supply of IC3002
(V-PRO.) and peripheral circuits.
NO
Is video signal (IN3YV) sent to pin
(2) of IC1201 (SW)? YES Check pin (AB20) of IC3002 (V-
PRO.), CONNECTOR (SC2703,
P1102) and peripheral circuits.
NO
Is video signal (CVBS) sent from
pin(1) of A/V-TERMINAL
(J1201=EXT3)? YES Check pin (1) (IN3SW) of
IC1201(SW), power supply and
peripheral circuits.
NO
Check A/V-TERMINAL (J1201 ),
external connection or input set-
ting.