Troubleshooting - Samsung LS15HAA Service Manual

4 Troubleshooting

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4-1 No Power(LS15HAA/LS15HAB)
When Pin 4 of CN600 is 0V
does proper DC 13V, 5V
appear at Pin 1, 2 and 6, 7 of
CN600 separately?
Yes
When Pin 3 of IC602 is DC 5V
does proper DC 3.3V appear at
Pin 2 of IC602?
Yes
When pin1 of IC600 is DC 5V
does proper DC3.3V appear at
Pin3 of IC600?
Yes
Replace AD Board.
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" "
Yes
No
Change IP Board.
No
Check IC602 and related circuit.
No
Check IC600 and related circuit.
4 Troubleshooting
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4-1