LG 22LS4R Service Manual page 18

5. No Raster on HDMI Signal
Repeat [A, B]
process.
Pass
Check the input/
output of IC100.
Pass
Check input source cable and jack.
6. No Raster on AV(Scart in
Video, S-Video) Signal
Pass
Repeat [A, B]
process.
Pass
Check
the input/output
of L1002, L1003,
L1004.
Pass
Check input/output
of IC100.
Pass
Check input source cable and jack.
Fail
Re-soldering or change the defect part.
Check the X100.
7. No Raster on TV(RF) Signal
Fail
Fail
Change L1002,
L1003, L1004.
Fail
Re-soldering of Change defect part.
Check the X100.
Pass
Check the output
of TU600.
Pass
- 18 -
Check 5V of TU600.
Fail
Re-Soldering or change
the defect part.