Samsung LHA20WS Service Manual page 28

4 Troubleshooting
4-1 No Power
There is no light in the power indicator.
Does proper DC 14 V
appear at Pin 1,2,5
1
of CN600?
Yes
Does proper DC 5V
2
appear at Output of
IC302?
Yes
Does proper DC 3.3V
3
appear at
Pin 3 of the IC600?
Yes
Does proper DC 1.8V
4 appear at
Pin 2 of the IC602?
Yes
Check IC200 and IC301.
No
Check the IP Board.
No
Check the IC302
No
Check the IC600.
No
Check the IC602.
4 Troubleshooting
4-1