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LG 20LS3R-TA Service Manual page 16

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3. No RASTER on PC Signal & Component signal
Repeat [A, B]
process.
Pass
Check
the input/ output
of JA601(R623
R624).
Pass
Check
the input/output
of IC101(R119, R121,
R124, R122).
Pass
Check the
input/output of
IC101.
Pass
Check input source cable and jack.
Fail
Check JA601.
Fail
Re-soldering or Change the defect part.
Fail
Re-soldering or change the defect part.
Check the X100.
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