5. Troubleshooting (continued)
5.6 Abnormal OSM display adjust problem
ACER H233H |
| 29 |
Go to cover page
Check the input I2C signal whether is changed when pressed
function keys on the P306 pin 4, 5
NG
OK
Failure Point
1)Function key wire disconnection.
2)Function key wire is failure.
3)Function key board is failure.
Check the input I2C signal of I308 pin 50, 51 whether is
changed when pressed function keys.
NG
OK
Failure Point
1)Printed wire broke among P306 pin4, R368 and I308 pin51
2)Printed wire broke among P306 pin5 ,R362 and I308 pin50
3)C393, C394 is short.
4)D352, D353 is short
Failure Point
I308 is failure.
