Sharp AQUOS LC-42LE40E, Service Manual

Page: 49 / 157

LC-32LE40E-LC-42LE40E
49
< During external connection > No picture on the TV (1)
↓
No picture appears on SCART - connected monitor during the tuner (U/V) reception.
↓
TERMINAL_UNIT:
↓
↓ YES
↓ YES
< During external connection > No picture on the TV (2)
AVOUT:
↓
No picture from SCART appears on AV OUT connected.
↓
TERMINAL_UNIT:
↓
↓ YES
↓ YES
Is CVBS signal output into pin (19) of CN151 (SCART)?
NO
Check the setting of an external input device that connects of
CN151.
Refer to “ The picture doesn't appear in all modes. ”
Is U401 pin (170) CVBS signal output into pin (19) of CN151
(SCART)?
NO
Check the line between CN151 and U401.
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”, “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/DTV, CVBS or Y/C of SCART, AV.
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 SCART is not the monitor output (output of the picture now watching).
The picture of the last selected TV channel is always sent to SCART. (Specification)
Is CVBS signal output into pin (19) of CN152 (AV OUT)?
NO
Check the setting of an external input device that connects of
CN152.
Refer to “ The picture doesn't appear in all modes. ”
Is CVBS signal output from pin (170) of IC U401 into pin (2) of
CN152 (AV OUT)?
NO
Check the line between CN152 and U401.
Checklist:
1) Is the Signal Type (item) in MENU-Option-Input Select equal to Signal Type of an external device? .
2) The picture is sent to the monitor in a CVBS signal if the source during display is TV, CVBS or Y/C of SCART, AV.
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 SCART. (Specification)