Read Sharp TU-X1E (serv.man7) Service Manual online
TU-X1E/RU
6 – 13
<During external connectlon>
No picture on the Exterior Monitor (3)-1
EXT1(SCART1):
No picture appears on EXT1 -connected
External monitor during the DTV or tuner
(U/V) reception.
No picture appears on EXT1 -connected
External monitor during the DTV or tuner
(U/V) reception.
Check SCART1, external
connection or input setting.
connection or input setting.
Is video signal (OUTV_SC1) output
from pin (67) of IC503 (AV-SW)?
from pin (67) of IC503 (AV-SW)?
Check pin (40) of SCART1 (J501)
and peripheral circuits.
and peripheral circuits.
Is video signal output to pin (40) of
SCART1 (J501)?
SCART1 (J501)?
YES
YES
NO
NO
Is IF video signal (TUNER_CVBS)
output from pin (6) of Tuner
(TU7501)?
output from pin (6) of Tuner
(TU7501)?
Check the B5V/IF-5V/5V(CONT)
power supply input pins (11)/(3)/(1) of
Tuner (TU7501), pins (9)(8) of I2C
line, and soldering.
power supply input pins (11)/(3)/(1) of
Tuner (TU7501), pins (9)(8) of I2C
line, and soldering.
Checklist:
1) Are input terminal on back of TV and "INPUT SOURCE "button
on the remote control set up correctly ?
See the operation manual and
set "INPUT SOURCE "appropriately.
2) Is SCART-CABLE disconnected or connected improperly?
Connect it correctly according to the operation manual.
3) When the monitor picture is not sent and is not displayed on the monitor, refer to "No picture" for each terminal.
Check pin (24) of IC503 (AV-SW),
PB harness and IC7505(VCA).
PB harness and IC7505(VCA).
YES
NO
[TERMINAL-UNIT]
[TUNER-UNIT]
<During external connectlon>
No picture on the Exterior Monitor (3)-2
Checklist:
1) Are input terminal on back of TV and "INPUT SOURCE "button
on the remote control set up correctly ?
See the operation manual and
set "INPUT SOURCE "appropriately.
2) Is SCART-CABLE disconnected or connected improperly?
Connect it correctly according to the operation manual.
3) When the monitor picture is not sent and is not displayed on the monitor, refer to "No picture" for each terminal.
Check SCART2 , external
connection or input setting.
connection or input setting.
Is video signal (OUTV) output from pin
(65) of IC503 (AV-SW)?
(65) of IC503 (AV-SW)?
Check pin (19) of SCART2 (J501)
and peripheral circuits.
and peripheral circuits.
Is video signal output to pin (19) of
SCART2 (J501)?
SCART2 (J501)?
YES
YES
NO
NO
Is IF video signal (TUNER_CVBS)
output from pin (6) of Tuner
(TU7501)?
output from pin (6) of Tuner
(TU7501)?
Check the B5V/IF-5V/5V(CONT)
power supply input pins (11)/(3)/(1) of
Tuner (TU7501), pins (9)(8) of I2C
line, and soldering.
power supply input pins (11)/(3)/(1) of
Tuner (TU7501), pins (9)(8) of I2C
line, and soldering.
YES
NO
EXT2(SCART2):
No picture appears on EXT2 -connected
External monitor during the DTV or tuner
(U/V) reception.
No picture appears on EXT2 -connected
External monitor during the DTV or tuner
(U/V) reception.
Check pin (24) of IC503 (AV-SW),
PB harness and IC7505(VCA).
PB harness and IC7505(VCA).
Click on the first or last page to see other TU-X1E (serv.man7) service manuals if exist.