Acer wistron rb23wabas Manual De Usuario
Confirm the host computer supplies DDC2B mode.
OK
NG
Failure Point
The host machine is not communicatiog in DDC2B mode.
OK
Check the output signal of serial data / clock on I307
pin34, 35.
OK
NG
Failure Point
I307 is failure.
Check the voltage on P302 pin9 that is power DC 5 V.
NG
Failure Point
The video cable is failure.
Check the signal on P302 pin12, 15 that is serial data
/ clock signal.
OK
NG
Failure Point
The video cable is failure.
Failure Point
1) Printed wire broke among I307 pin34,35,R328,R330
and P302 pin12,15
2) I307 maybe failure.
3) R328,R330 is open.
4) D310 or D311 or C330 or C331 is shorted.
and P302 pin12,15
2) I307 maybe failure.
3) R328,R330 is open.
4) D310 or D311 or C330 or C331 is shorted.
5.7 Abnormal plug and play operation for VGA
34
5. Troubleshooting (continued)
ACER V233H