Read Sharp TU-X1E (serv.man7) Service Manual online
TU-X1E/RU
6 – 15
˴˴˴˴˴˴˴˴˴˴˴˴˴˴˴˴˴˴
<When EXT2 is used for external input>
No picture on the display (5)-1
No EXT2-Composite output of
the external input system.
the external input system.
Is RGB signal (SCART-R/G/B)
sent to pins (92)(88) and (90)
of IC503 (AV-SW) ?
sent to pins (92)(88) and (90)
of IC503 (AV-SW) ?
No EXT2-RGB output of the
external input system.
external input system.
Check SCART2(J501) and
peripheral circuits.
peripheral circuits.
YES
NO
YES
YES
Checklist:
1) Is "INPUT SOURCE" button
on the remote control set up correctly?
set it as "EXT2" with the INPUT SOURCE button on the remote control.
2) Is MENU-Picture-Backlight/Contrast/Brightness set to "MIN"?
Set it to an appropriate level.
3) Check the connection to the external device
Connect it correctly according to the operation manual of external device.
Is composite video signal sent
to pin (20) of SCART2 (J501)?
to pin (20) of SCART2 (J501)?
Check external connection,
input setting, SCART2(J501)
and peripheral circuits.
input setting, SCART2(J501)
and peripheral circuits.
Is RGB signal sent to pins
(15), (11) and (7) of SCART2
(J501) ?
(15), (11) and (7) of SCART2
(J501) ?
Check external connection, input
setting, SCART2 (J501) and
peripheral circuits.
setting, SCART2 (J501) and
peripheral circuits.
NO
NO
Is composite video signal
(VIN1) sent to pin (6) of IC503
(AV-SW)?
(VIN1) sent to pin (6) of IC503
(AV-SW)?
Check SCART2(J501) and
peripheral circuits.
peripheral circuits.
NO
YES
BLOCK-A
Is Y/C signal sent to pins (20)
and (15) of SCART2 (J501) ?
and (15) of SCART2 (J501) ?
Check external connection,
inputsetting, SCART2 (J501)
and peripheral circuits.
inputsetting, SCART2 (J501)
and peripheral circuits.
No EXT2-Y/C output of the
external inut sstem.
external inut sstem.
YES
Is Y/C signal (Y1/C1) sent to
pins (6) and (92) of IC503
(AV-SW)?
pins (6) and (92) of IC503
(AV-SW)?
Check SCART2 (J501) and
peripheral circuits.
peripheral circuits.
NO
NO
YES
<When EXT2 is used for external input>
No picture on the display (5)-2
Checklist:
1) Is "INPUT SOURCE" button
on the remote control set up correctly?
set it as "EXT2" with the INPUT SOURCE button on the remote control.
2) Is MENU-Picture-Backlight/Contrast/Brightness set to "MIN"?
Set it to an appropriate level.
3) Check the connection to the external device
Connect it correctly according to the operation manual of external device.
BLOCK-A
Click on the first or last page to see other TU-X1E (serv.man7) service manuals if exist.