Acer P203 P203W LCD Service Guide - Page 26

5.5 Abnormal screen (For the DVI) 5. Troubleshooting (continued) ACER P203W 25 Go to cover page Check the DVI video signal from computer input on P303 of DVI-I video connector. NG OK 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 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. OK Failure Point NG 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 I306 pin 3, 4. 2) Video cable is failure. 3) R336, R337 open. Check all LVDS signals being output to P304 from I305? NG OK Failure Point Printed wire broke between I305 and P304. Prpcess "Checking the resolution change IC movement" section.