Sharp LC-32XL8E/S/RU Service Manual page 62

LC-32XL8E/S/RU, LC-37XL8E/S/RU
Does not the picture of the Y/C video signal input to EXT3 go out?
MINI AV_UNIT:
Is Y/S signal input into pin (13), (11) of connector P901 from pin
(3)/Y, (4)/C of J902?
TERMINAL UNIT:
Is Y/C signal input into pin (5), (7) of IC506 (VIDEO SELECTOR)
from pin (13)/Y, (11)/C of connector P501?
Is the Y/C video signal detection function S3_PLUG signal from
pin (6) of the input terminal J902 normal?
Is the S3_PLUG signal input to pin (42) of IC506?
Is Y/C signal output into pin (68), (70) of connector SC501 from
pin (52)/Y, (50)/C of IC506?
MAIN UNIT:
Is Y/C signal input to pin (68), (70) of connector SC1101?
Is Y/C signal input to pin (Y4), (V9) of IC3301
(VIDEO_PROCESSOR)?
Refer to "The picture doesn't appear in all modes".
<When EXT3 is used for external input> No picture on the display (8)
YES
YES
YES
YES
YES
YES
YES
NO Check the line between J901 and P901.
NO Check the line between P501 and IC506.
(Connector P901/P501, etc.)
NO Check J902 or peripheral circuits.
NO Check the between S3_PLUG_LINE J902 and pin (42) of TER-
MINAL UNIT's IC506.
(connector P901/P501, etc.)
NO Check the line between IC506 and SC501.
NO Check the connector (SC501/SC1101)
NO Check the line between SC1101 and IC3301.
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