Troubleshooting - Samsung 510N Service Manual

5 Troubleshooting

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
No
Change IP Board.
No
Check IC602 and related circuit.
No
Check IC600 and related circuit.
No
Check IC601 and related circuit.
No
Check IC601 and related circuit.
5-1