CONFIDENTIAL
5 Troubleshooting
5-1 No Power
Does proper DC 14V appear at DC
jack connected to CN801?
Yes
Does proper DC 3.3V_A
1
appear at FT852?
Yes
Does proper DC 2.5V_A appear at Pin 3 of IC802?
Yes
Does proper DC 3.3V_B
2appear at FT822?
Yes
Does proper DC 2.5V_B appear at Pin 3 of IC806?
No
No
No
No
No
Check SMPS PCB and Adapter.
Check IC801. (#2)
Check IC802.
Check IC805. (#1)
Check IC806.
WAVEFORMS
1 IC801 #2
2 IC805 #1
NK15A*/NK17A* |
