5 Troubleshooting
Notes: 1. Before troubleshooting, set up the PC’s display as below.
•Resolution: 1280 x 1024
•
•
2.If no picture appears, confirm the power cord is correctly connected.
3.Check the following circuits.
•No raster appears: Stand PCB, Main PCB
•12V develop but no screen: Main PCB
•12V does not develop: Main PCB
4.If you push and hold the EXIT button for more than 5 seconds, the monitor automatically reverts back to the factory preset
5-1 No Power
Does proper DC 12 V appear at DC jack connected to CN101?
Yes
Does proper DC 5 V appear at
Pin 4 of IC101?
Yes
Does proper 5 V - signal appear at Pin 42 of IC501 (SW_REG_EN)?
Yes
Check Q103, Q105 and Q106.
No
No
No
Check Power Adaptor.
Check IC101 and related circuit.
Check IC501 and related circuit.
(CN102, Function Key)
SyncMaster 800TFT |
