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5 Troubleshooting
5-1 No Power
Does proper DC 14 V appear at
DC jack connected to CN12?
Yes
Does proper DC 5 V
appear at Pin 2 of IC11?
Yes
Does proper DC 14V
appear at Pin 1 of IC11?
Yes
Does proper DC 3.3 V appear at
Pin 3 of IC14?
Yes
Does proper DC 2.5 V appear at
Pin 4 of IC109 and IC17?
Yes
Check IC23.
LW15E33C/LW17E34C
No
Check SMPS PCB and adapter.
No
Check IC11.
No
Check IC11.
No
Check IC14.
No
Check IC109 and IC17.
5-1
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