Sharp LC-32WD1E/S/RU Service Manual page 48

LC-32WD1E/S/RU, LC-37WD1E/S/RU, LC-42WD1E/S/RU, and LC-32/37/42WT1E
NO picture on Monitor out via tuner reception
No picture appears on EXT-1 - connected monitor
during tuner reception
Checklist:
1) Are input terminal on back of TV and "INPUT SOURCE" button
==> See operation manual and set "INPUT SOURCE" appropriatly
2) is the signal type (item) in MENU - OPTION - Input Slect equal to signal type of an 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 on display" 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 (CVBS) sent to pin19A of SCART1 (X027-1) ?
Is video signal (CVBS) sent to R1371 ?
TDA15143E (D013) is not functioning normal.
Is tuner reception visible on LCD screen ?
GOTO "NO picture on display via tuner reception (analog TV)"
SCART1:
yes
no
no
no
on the remote control set up correctly ?
Check SCART1, external connection or input setting.
yes
Check +5V_TV, check buffer peripherals (V1332, V1331)
yes and check ESD protection diode (V1315) short to GND ?
Check TDA15143E (D013) peripherals or GTV SW
yes
6-17
Check R0124