32PC5RV-UG (CHASSIS:PP78C) - LG TV Service Manual (repair manual). Page 17

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TROUBLE SHOOTING GUIDE
5. In the case of an unusual display in rear AV mode.
Is the video input 
of the A/V jack normal?
(Check R113)
Yes
Sam as Block A
Check the input source.
No
6. In the case of an unusual display in SCART 1 mode.
Is the video input
of the A/V jack normal?
(Check R113)
Yes
Sam as Block A
Check the input source.
No
7. In the case of an unusual display in SCART 1_RGB mode.
Is the video input
of the A/V jack normal?
(Check R115,R116, 
R117)
Yes
Sam as Block A
Check the input source.
No
8. In the case of an unusual display in SCART 2 mode.
Is the video input 
of the A/V jack normal?
(Check R149)
Yes
Sam as Block A
Check the input source.
No
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