Sharp Aquos LC-46X20E, Руководство по обслуживанию

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LC-42XL2E/S/RU, LC-46XL2E/S/RU, LC-46X20E/S/RU, LC-52XL2E/S/RU, LC-52X20E/S/RU
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<When EXT3 is used for external input> No picture on the display (7)
Does not the picture of the composite video signal input to EXT3 go out?
MAIN UNIT:
Is CVBS signal output from pin (6) in input terminal J901 to pin
(5) of connector P901?
NO Check the line between J901 and P901.
TERMINAL UNIT: YES
Is the CVBS signal input from pin (5) of connector P501 to pin (3)
of IC506 (VIDEO SELECTOR)? NO Check the line between P501 and IC506.
(Connector P901/P501, etc.)
YES
Is the composite video signal detection signal V3_PLUG signal
from pin (7) of the input terminal J901 normal? NO Check J901 or peripheral circuits.
YES
Is the V3_PLUG signal input to pin (2) of IC506? NO Check the between V3_PLUG_LINE J901 and pin (2) of TERMI-
NAL UNIT's IC506. (ConnectorP901/P501,etc)
YES
Is video signal MAIN_Y/V output into pin (2) of connector SC501
from pin (52) of IC506? NO Check the line between IC506 and SC501.
MINI AV UNIT: YES
Is picture signal MAIN_Y/V input to pin (2) of connector SC1101? NO Check the connector (SC501/SC1101)
YES
Is picture signal MAIN_Y/V input to pin (Y4) of IC3301
(VIDEO_PROCESSOR)? NO Check the line between SC1101 and IC3301.
YES
Refer to “The picture doesn't appear in all modes.”