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32LC51, 32LC52, 32LC53, 32LC54, 32LC7R (CHASSIS:LP78A) - LG TV Service Manual (repair manual). Page 21

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8. In the case of an unusual display in SCART 1 mode.
Is the video input
of the A/V jack normal?
(Check R172)
Yes
Sam as Block A
Check the input source.
No
9. In the case of an unusual display in SCART 1_RGB mode.
Is the
video input of
the A/V jack normal?(Check
R110,R170, R171,
R173)
Yes
Sam as Block A
Check the input source.
No
10. In the case of an unusual display in SCART 2 mode.
Is the
video input of
the A/V jack normal?
(Check R174)
Yes
Sam as Block A
Check the input source.
No
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