Sharp LC-19S7E-BK Service Manual page 45

No picture appears on SCART1 - connected monitor during the tuner (U/V) reception.
Checklist:
1) Is the Signal Type (item) in MENU-Option-Input Select equal to Signal Type of an external device? ...Set it to "CVBS", "RGB", "AUTO".
2) Is ANT-CABLE disconnected or connected improperly? ...Connect it correctly as per the operation manual.
3) The picture is sent to the monitor in a CVBS signal if the source during display is ATV, CVBS of SCART1-2, AV side.
When sent by component, etc., that signal is not sent to the monitor.
4) When the monitor picture is not sent and is not displayed on the monitor, refer to "No picture" for each terminal.
5) The video output from SCART1 is not the monitor output (output of the picture now watching).
The picture of the last selected TV channel is always sent to SCART1. (Specification)
TERMINAL_UNIT:
Is CVBS signal output into pin (19) of CN1901 (SCART1)?
Is TUNER_CVBS signal output into pin (21) of CN1901 (SCART1)?
Refer to "The picture doesn't appear in all modes."
SCART2:
No picture from SCART1 appears on SCART2-connected monitor.
NOTE: Normally, if the screen during display is sent to SCART2, no picture is sent to SCART2.
Checklist:
1) Is the Signal Type (item) in MENU-Option-Input Select equal to Signal Type of an external device? ...Set it to "CVBS",.
2) The picture is sent to the monitor in a CVBS signal if the source during display is TV, CVBS of SCART1-2, AV side.
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 SCART1 is not the monitor output (output of the picture now watching).
The picture of the last selected TV channel is always sent to SCART1. (Specification)
TERMINAL_UNIT:
Is CVBS signal output into pin (19) of CN1902 (SCART2)?
Is CVBS signal output from pin (A13) of IC U4201 into pin (19) of
CN1902 (SCART2)?
Refer to "The picture doesn't appear in all modes."
< During external connection > No picture on the monitor (1)
↓
↓
↓
↓NO
↓NO
< During external connection > No picture on the monitor (2)
↓
↓
↓
↓NO
↓NO
2008-03-14
LC-19S7E-BK LC-26S7E-BK LC-32S7E-BK
YES
Check the setting of an external input device that connects of
CN1901.
YES
Check the line between CN1901 and TU1101.
YES
Check the setting of an external input device that connects of
CN1902.
YES
Check the line between CN1902 and IC U4201.
45