5. Troubleshooting (continued)
Check the DVI video signal from
computer input on P303 of DVI
connector.
OK
NG
Failure Point
1) No DVI video signals output from host
computer, check computer.
2) DVI Video signal cable disconnection.
Check the DVI input video signals on
I308 pin 12,13,14,15,16,17,18,19
respectively that differential input
voltage is 150 to 1200mV, and input
commond mode voltage is 3.3V.
Failure Point
In the case of the DVI_RX0+/- signal. (A
DVI_RX1+/-, DVI_RX2+/- and
DVI_RXC+/- signal is the same path,
too.)
1)Printed wire broke between P303 pin
17, 18 and I308 pin 12. 13.
2) Video cable is failure.
3) R350, R355 open.
NG
OK
Check all LVDS signals being output
to P307 from I308?
Failure Point
Printed wire broke between I308 and
P303.
NGOK
Proceed "Checking the resolution
change IC movement" section.
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