Read Sharp LC-32LE600E (serv.man7) Service Manual online
LC-32/40/46LE600E/RU/S
5 – 26
<When an external monitor is connected> No picture on the external monitor (6)-1
No picture appears on external monitor during the tuner (U/V)
reception. (Tuner input, EXT1 output)
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. set to EXT***.
2) Is SCART-CABLE disconnected or connected improperly?
••• Connect it correctly as per the operation manual.
Is the video signal outputted to pin (19) of SCART1 (SC503)?
YES
Check SCART1, external connection or input setting.
NO
Is the video signal (SC1-VOUT) outputted from pin (2) of IC504
(75
(75
Ω_driver)?
YES
Check SCART1 (SC503) and peripheral circuits.
NO
Is video signal (CVBS_TU_OUT) input to pin (4) of IC507?
YES
Check IC507 and peripheral circuits.
NO
Is video signal (TUNER_CVBS) outputted from emitter of
Q1102?
Q1102?
YES
Check IC3303 and peripheral circuits.
NO
Is video signal (VIDEO) outputted from pin (6) of TUNER
(TU1102)?
(TU1102)?
NO
Check IF5V power supply pins (3), 12C-line pins (9) and (8) of
tuner (TU1102) and peripheral circuits.
tuner (TU1102) and peripheral circuits.
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