4 Troubleshooting
4-3 No Video (PC Digital Signal)
1Is Pin9 of
CN500(BKLT_EN)high(3.3V)?
Yes
Does the Digital video
9signal appear at R100 ~ R107?
Yes
Does the proper clock pules
8appear at Pin6,7
of the CN400?
Yes
No
No
No
Check TFT_LCD panel or inverter
and connection between then.
Check PC signal.
Check IC300.
Replace LCD Panel.
