4 Troubleshooting
4-2 No Video (PC Analog Signal)
5Is pin9 of
CN500(BKLT_EN)high(3.3V)?
Yes
Does the analog video signal
6appear at R134, 136, 138
(Red,Green,Blue)?
Yes
7Does the X300
oscilate Properly?
Yes
Does the proper clock pules
8appear at Pin6,7 of
the CN400?
Yes
No
No
No
No
Check TFT_LCD panel or inverter
and connection between then.
Check pc signal.
Check the X300.
Check CN400.
Replace LCD Panel.
