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4 Troubleshooting

4-1 No Power
Does 12 V appear at
Pin 12V of CN602?
YES
Does DC 12V appear at
1
C653?
YES
Does 3.3V appear at
2
C622?
YES
Does DC 1.8V appear at
3
C603?
YES
Does 3.3 V appear at Pin
4
16 ofCN602?
NO
Check the IP Board.
NO
Check the peripheral circuit of CN602.
NO
Replace IC602.
NO
Replace IC601.
NO
The Scaler(IC408) is abnormal.
Replace the main board.
4 Troubleshooting
4-1

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