Samsung LB15VS Service Manual page 30

5-1-18 OSD Failure
Check CN203 or CN201 and
connector ass'y.
Yes
IC101 Pin 24 input is
19
right?
Yes
IC101 Pin 1 input is
20
right?
Yes
IC101 Pin 11 and 12
inputs are right?
Yes
IC101 Pin 19, 20 and 21
21
outputs are right?
Yes
Check and replace IC101.
Done
LB15VS/LB17LS/LB17KS/
LB17LT/LB17KT
Check and replace
No
IC105, C101, and R102,
ZD104.
No
Check CN102 Pin 8 and R106.
No
Check IC201 Pin 41 and 42.
No
Check and replace IC101.
5 Troubleshooting
WAVEFORMS
19
1.00 V (IC101, #24)
20
1.00 V (IC101, #1)
21
1.00 V (IC101, #19,20,21)
5-11