Read Sharp LC-37RD2E (serv.man5) Service Manual online
LC-32RD2E/RU, LC-37RD2E/RU
4 – 17
No picture on the display (14)
No EXT7 output of the external input system.
Checklist:
1) Is “INPUT SOURCE” button
1) Is “INPUT SOURCE” button
on the remote control set up correctly?
••• See the operation manual and set “INPUT SOURCE” to “EXIT7”.
2) Is MENU-PICTURE-CONTRAST/BRIGHTNESS set to “MIN”?
••• Set it to an appropriate level.
3) Check the connection to the external device
••• Connect it correctly as per the operation manual for the device.
Is composite video signal sent to pin (6) of A/V-IN-TERMINAL
(J1401)?
NO
Check external connection, input setting, A/V-IN-TERMINAL
(J1401) and peripheral circuits.
(J1401) and peripheral circuits.
YES
Is composite video signal (EX-CVBS) sent to input terminal pin
(1) of IC2801 (SW)?
(1) of IC2801 (SW)?
NO
Check CONNECTOR (P1401/P2791) and peripheral circuits.
YES
Is composite video signal (EX-CVBS=VIN7) sent to input terminal
pin (184) of IC3001 (VCT)?
pin (184) of IC3001 (VCT)?
NO
Check IC2801, IC3001 (VCT) and peripheral circuits.
YES
Refer to “No video output in all modes”.
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