Name: Sharp LC-40LE700E
Brand: Sharp
Rating: 5 (1 reviews)

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LC-32/40/46LE700E/RU/S,LU700E/S,LX700E/RU,LC-52LE700E/RU/S

6 – 15

<During external connection> No picture on the monitor (1)

No picture appears on EXT1/EXT2 connected monitor during the VHF/UHF reception.

Is CVBS signal output into pin (19) of EXT1 (SC503) from pin(67)

of IC504 (TUNER OUT)?

YES Check the setting of an external input device that connects with

EXT1.

Is CVBS signal output into pin (19) of EXT2 (SC502) from pin(65)

of IC508 (MONITOR OUT)?

YES Check the setting of an external input device that connects with

EXT2.

Is CVBS signal input to pin (6) of IC504 from pin(2) of

IC507(MUX)?

YES Check the IC504 and their peripheral circuits.

Is CVBS signal input to pin(1) of IC508 from pin(AJ24/

CVBS_MONI_OUT) of IC3302

(Digital AV decode & Main CPU)?

YES Check the IC508 and their peripheral circuits.

Is TUNER_CVBS signal input to pin (6) of IC507 from

TUNER(TU1101)?

YES Check the IC507 and their peripheral circuits (IC3302).

Is TUNER_CVBS signal input to pin (AD29/TU_CVBS) of IC3302

from TUNER(TU1101)?

YES Check the IC3307 and their peripheral circuits (IC3302).

Is TUNER_CVBS signal output from pin (6) of TUNRE(TU1101)? YES Check the line between TU1101 and their peripheral circuits

(Q1106)

Whether the TUNER circuit operates correctly is checked.

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