Read Sharp TU-X1E (serv.man7) Service Manual online
TU-X1E/RU
6 – 3
(TUNER-UNIT)
Terrestrial
(Satellite TUNER)
(TUNER)
Check pins (4) and (2) of MB connector
(SC7901), MB harness, and their peripheral
circuits.
(SC7901), MB harness, and their peripheral
circuits.
NO
Is the digital signal (FED_D/FECLK)
outputted from pins (9) and (4) of
IC7906 (TS-SW)?
outputted from pins (9) and (4) of
IC7906 (TS-SW)?
Check the D5V/IF5V/5V (CONT) pins
(11), (1) and (3) as well as the
SDA/SCL signal pins (9) and (8) of
terrestrial tuner (TU7501).
(11), (1) and (3) as well as the
SDA/SCL signal pins (9) and (8) of
terrestrial tuner (TU7501).
YES
YES
NO
Is the digital signal (FED_D/FECLK)
inputted to pins (10) and (3) of IC7906
(TS-SW)?
inputted to pins (10) and (3) of IC7906
(TS-SW)?
At the time of terrestrial digital
broadcasting
broadcasting
Is the digital signal(FED_D_DVBS/FECLK_
DVBS) inputted to pins (11) and (2) of
IC7906 (TS-SW)?
DVBS) inputted to pins (11) and (2) of
IC7906 (TS-SW)?
Is the IF (D1/D2) signal outputted from
pins (17) and (16) of terrestrial tuner
(TU7501)?
pins (17) and (16) of terrestrial tuner
(TU7501)?
Is the (FED_D_DVBS/FECLK_DVBS)
signal outputted from pins (21) and (22)
of satellitetuner (TU7901)?
signal outputted from pins (21) and (22)
of satellitetuner (TU7901)?
NO
Check soldering of the tuner
(TU7501)circumference etc. If it is
okay, replacethe terrestrial digital
tuner (TU7501).
(TU7501)circumference etc. If it is
okay, replacethe terrestrial digital
tuner (TU7501).
Check the VDD/3.3V_T pins (13) and (4)
as well as the SDA/SCL signal pins (8)
and (9)of satellite tuner (TU7901).
as well as the SDA/SCL signal pins (8)
and (9)of satellite tuner (TU7901).
At the time of satellite digital broadcasting
NO
Is the digital signal (FED_D/FECLK)
outputted from pins (11) and (9) of
IC7508 (COFDM)?
outputted from pins (11) and (9) of
IC7508 (COFDM)?
NO
NO
Check soldering of the tuner (TU7901)
circumference etc. If it is okay, replace
the digital satellite tuner (TU7901).
circumference etc. If it is okay, replace
the digital satellite tuner (TU7901).
NO
NO
A
Click on the first or last page to see other TU-X1E (serv.man7) service manuals if exist.