LG T910B Service Manual page 29

IC401 Pin 16 input is over
IC401 Pin 45 and 46
3
inputs are right?
IC401 Pin 23 input is
High Active?
All in/output values are
Waveforms
3
IC401, #45,46
Change IC302
16. Micom Failure
4.2V?
YES
YES
YES
right?
YES
Done.
17. OSD Failure
NO
NO
NO
NO
- 29 -
Check IC903.
Check X401.
Check and replace
R451,C408
Replace IC401.