Samsung LB15VS Service Manual page 29

5 Troubleshooting
5-1-17 MICOM Failure
IC201 Pin 11 input voltage
is 5V?
Yes
IC201 Pin 13 and 14
18
inputs are right?
Yes
IC201 Pin 18 input is right?
Yes
All in/output values are
right?
Yes
Done
5-10
No
Check IC621.
No
Check C202, C203 and X201.
No
Check and replace IC201 and
R225.
No
Replace IC201.
WAVEFORMS
18
5 Vpp (IC201, #13, 14)
LB15VS/LB17LS/LB17KS/
LB17LT/LB17KT