Samsung 710N - SyncMaster 17" LCD Monitor Service Manual - Page 14

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5 Troubleshooting

Notes:

1. Before troubleshooting, setup the PC's display as below.

• Resolution: 1024 x 768

• H-frequency: 61 kHz

• V-frequency: 75 Hz

2. If no picture appears, make sure the power cord is correctly connected.

3. Check the following circuits.

• No raster appears: Function PBA, Main PBA, I/D PBA

• 5V develop but no screen: Main PBA

• 5V does not develop: I/D PBA

4. If you push and hold the "

automatically returns to the factory preset.

5-1-1 No Power (MJ15A*/MJ15B*)

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 4 of IC602?

Yes

When Pin 4 of IC600 is DC 5V

does proper DC 3.3V appear at

Pin 5 and 6 of IC600?

Yes

When Pin 2, 3 of IC601 is

DC 3.3V does proper DC 4.3V

appear at Pin 1 of IC601?

Yes

When Pin 2, 3 of IC601 is

DC 4.3V does proper DC 2.5V

appear at Pin 4 of IC601?

* 0V means power on state.

When the monitor work well except DPMS and power

switch off,

0V should be applied to number 4 of CN600.

(Enter, Source)" button for more than 5 seconds, the monitor

Check Function Ass'y.

Yes

Change IP Board.

Check IC602 and related circuit.

Check IC600 and related circuit.

Check IC601 and related circuit.

5-1