LC-32D44E (serv.man5). Trouble Shooting Table - Sharp TV Service Manual (repair manual). Page 19

LC-32D44E/S/RU-BK/GY

4 – 19

<During external connection>  No picture on the monitor (4)

SCART2:
No picture from EXT3 appears on EXT2- connected monitor.

Checklist:
1) Is the Signal Type (item) in MENU-Option-Input Select equal to Signal Type of an external device? ... Set it to “CVBS”, “Y/C” or “RGB”.
2) 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.
3) When the monitor picture is not sent and is not displayed on the monitor, refer to “No picture” for each terminal.
4) 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 CVBS signal output into pin(19) of SC1101(SCART2) 
from pin(2) of IC1101(SW)?

YES

Check the setting of an external input device that connects of SC1101.

NO

Is CVBS signal output into pin(194) of 
IC3001(MAIN_MICON) from pin(6) of IC1101?

YES

Check the line between IC1101 and SC1101.

NO

Is CVBS signal output into  pin(194) of IC3001 from 
pin(6) of IC1101(VIDEO_SELECTOR)?

YES

Check power supply of IC3001 (MAIN_MICON) and peripheral circuits.

NO

Is CVBS signal output into PIN(1) of IC1001 from 
PIN(10) of connector P1001?

YES

Check IC1001 and its peripheral circuits.
(SV1JSW_LINE, EXTDTV_LINE)

NO

Check the setting of an external input device that con-
nects of SC1102.

MINI_AV_UNIT:

NO

Is the video signal output into PIN(10) of connector 
SC1001 from PIN(6) of input terminal J1002?

YES

Check the connector SC1001/P1001.

NO

Check the setting of an external input device that con-
nects of J1002.