5. Troubleshooting (continued)
5.2.2 Nothing displays on the screen (Screen is black and colour of LED is blue)continued:
Continue
OK
NG
OK
Failure Point
I301 is failure.
NG
Failure Point
1) Printed wire broke between CN301
pin9, 10, 11 and I301.
2) Check power board.
OK
Failure Point
I302 is failure.
NG
Failure Point
1) Printed wire broke between I301
pin 2, and I302 pin 3.
2)
Both D313 and L313 are open.
3) I302 is failure.
NG
Check the 3.3V power are
supplied on I301 pin 2.
Check if the voltage on
I301 pin 3 that is power DC at 5V.
Check the 1.2V power are
supplied on I302.
Check if the voltage
on I302 pin 3 that is power DC at
3.3V from I301.
Next Page
OK
35
ACER A211H/A221HQ