Acer RB23WABAS 5.5Abnormal screen (For DVI and the same for HDMI), 28 5.Troubleshooting (continued)

Checkthe DVI video signal from computer input
onP303 of DVI connector.
OK
NG
FailurePoint
1)No DVI video signals output from host
computer,check computer.
2)DVI Video signal cable disconnection.
Checkthe DVI input video signals on I308 pin
12,13,14,15,16,17,18,19respectively that
differentialinput voltage is 150 to 1200mV, and
inputcommond mode voltage is 3.3V.
FailurePoint
Inthe case of the DVI_RX0+/- signal. (A
DVI_RX1+/-,DVI_RX2+/- and DVI_RXC+/-
signalis the same path, too.)
1)Printedwire broke between P303 pin 17, 18 and
I308pin 12. 13.
2)Video cable is failure.
3)R350, R355 open.
NG
OK
Checkall LVDS signals beingoutput to P307
fromI308?
FailurePoint
Printedwire broke between I308 and P303.
NG
OK
Proceed"Checking the resolution change IC
movement"section.
5.5Abnormal screen (For DVI and the same for HDMI)
Go to cover page
28 5.Troubleshooting (continued)
ACERH233H