LG 20LS2R Series, Service Manual

Page: 19 / 33

5. No Raster on HDMI Sinal
6. No Raster on AV(Scart in
Video, S-Video) Signal
7. No Rasteron TV(RF) Signal
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Repeat [A, B]
process.
Pass
Check the input/
output of IC100.
Fail
Re-soldering or change the
defect part, Check the X100.
Pass
Check input source cable and jack.
Check input source cable and jack.
Repeat [A, B]
process.
Fail
Check short of
IC100, Q307.
Pass
Pass
Fail
Check 5V of TU600.
Re-Soldering or change
the defect part.
Check
the input/output of
L804, L1002,L1003,
L1004.
Fail
Change L804, L1002,
L1003, L1004.
Pass
Check Output of
IC1104, IC1105.
Pass
Fail
Re-soldering of Change
defect part, Check the X100.
Pass
Pass