Troubleshooting - Samsung LT15M23C Service Manual

5 Troubleshooting

5-1 No Power
Does proper DC 14V/5V
appear at Pin 3. Pin 9 of
1
CN100?
Yes
Does proper DC A5V
2
appear at FT144?
Yes
Does proper B3.3V
3
appear at Pin 2 of IC111?
Yes
Does proper DC B1.8V
4
appear at Pin 4 of IC112?
Yes
Does proper DC B8V
5
appear at FT130?
LT15M23C
No
Check CN803 Pin3, Pin9 in I/P
Board.
No
Check IC101 and IC105.
No
Check IC111.
No
Check IC112.
No
Check IC109.
5 Troubleshooting
5-1