Samsung 932B - SyncMaster - 19" LCD Monitor, Service Manual

Page: 19 / 87

4 Troubleshooting
4-1
4 Troubleshooting
4-1 No Power (17", 19")
When Pin 4 of CN600 is 0V
does proper DC 13V, 5V
appear at Pin 5 and 6, 7 of
CN600 separately?
Change IP Board.
Check Function Ass'y.
Yes
Yes
No
When Pin 1 of IC600 is DC 5V
does proper DC 3.3V appear at
Pin 3 of IC600?
Check IC600 and related circuit.
Yes
No
When Pin3 of IC602 is DC 3.3V
does proper DC1.8V appear at
Pin2 of IC602?
Check IC602 and related circuit.
No
* All locations of this page includes Main PBA.
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/P PBA
•
5V develop but no screen: Main PBA
•
5V does not develop: I/P PBA
4. If you push and hold the
"
(Enter/Source)" button for more than 5 seconds, the monitor
automatically returns to the factory preset.