Samsung LTM1525 Specifiche Scaricare il pdf (Pagina 22)

CONFIDENTIAL

LTM1525/LT15S13C 5-1

5 Troubleshooting

5-1 No Power

Does proper DC 14V appear at DC

jack connected to CN801?

Check SMPS PCB and Adapter.

Yes

Does proper DC 3.3V_A

appear at FT852?

Check IC811.

Check IC812.

Yes

Does proper DC 2.5V_A

appear at Pin 3 of IC802?

Check IC802.

Yes

Does proper DC 3.3V_B

appear at T807?

Check IC805.

Yes

Does proper DC 2.5V_B

appear at Pin 4 of IC806?

Check IC806.

WAVEFORMS

IC811 #2

IC805 #1

IC812 #2

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Samsung LTM1525 Specifiche Pagina 22