Samsung 510N Service Manual page 18

5 Troubleshooting
Notes: 1. Before troubleshooting, setup the PC's display as below.
e Resolution: 1280 x 1024
e H-frequency: 64 kHz
e V-frequency: 60 Hz
If no picture appears, make sure the power cord is correctly connected.
wn
Check the following circuits.
¢ No raster appears: Function PBA, Main PBA, |/P PBA
e 5V develop but no screen: Main PBA
¢ 5V does not develop: I/P PBA
B
to the factory preset.
5-1-2 No Power (MJ17A*/MJ19A*/MJ17B*/MJ19B*)
| Check Function Ass'y.
Yes
Change IP Board.
When Pin 4 of CN600 is OV
does proper DC 13V, 5V
appear at Pin 1, 2 and 6, 7 of
CN600 separately?
Yes
When Pin 4 of 1C600 is DC 0.5V
does proper DC 0.5V appear at
Pin 5 and 6 of IC600?
Check IC600 and related circuit.
Yes
0
DC 3.3V does proper DC 4.3V Check IC601 and related circuit.
Yes
)
DC 4.3V does proper DC 2.5V Check IC601 and related circuit.
* QV means power on state.
When the monitor work well except DPMS and power switch off,
OV should be applied to number 4 of CN600.
52
MJ15AS*/MJ17AS*/MJ19AS*/
MJ15BS*/MJ17BS*/MJ19BS*
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