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5.5 Abnormal screen (For the DVI)
Check the DVI video signal from
computer input on P303 of DVI-I
Check the DVI input video signals on I305 pin 3,
4, 6, 7, 9, 10, 12, 13 respectively that differential
input voltage is 150 to 1200mV, and input
commond mode voltage is 3.3V.
Check all LVDS signals being
output to P304 from I305?
Prpcess "Checking the resolution
change IC movement" section.
5. Troubleshooting (continued)
video connector.
NG
OK
OK
NG
OK
Failure Point
1) No DVI video signals output from host
computer, check computer.
2) DVI Video signal cable disconnection.
Failure Point
In the case of the DVI_RX0+/- signal. (A
NG
DVI_RX1+/-, DVI_RX2+/- and DVI_RXC+/-
signal is the same path, too.)
1)Printed wire broke between P303 pin 17,
18 and I306 pin 3, 4.
2) Video cable is failure.
3) R336, R337 open.
Failure Point
Printed wire broke between I305 and
P304.
25
ACER P223W
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