mitac 8599.pdf - tim.id.au
mitac 8599.pdf - tim.id.au
mitac 8599.pdf - tim.id.au
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8.15 LAN Test Error (1)<br />
An error occurs when a LAN device is installed.<br />
LAN Test Error<br />
1. Check if the driver is installed properly.<br />
2. Check if the notebook connect with the<br />
LAN properly.<br />
Test<br />
OK?<br />
No<br />
Replace<br />
Motherboard<br />
Yes<br />
Correct it.<br />
8599 N/B Maintenance<br />
Board-level<br />
Troubleshooting<br />
Check the following parts for cold solder or one of the following<br />
parts on the mother-board may be defective, use an oscilloscope<br />
to check the following signal or replace the parts one at a <strong>tim</strong>e and<br />
test after each replacement.<br />
U20<br />
U5<br />
U4<br />
X1<br />
L19<br />
L23<br />
R298<br />
R294<br />
R288<br />
R291<br />
Parts: Signals<br />
R300<br />
R292<br />
R295<br />
L24<br />
L25<br />
R66<br />
R68<br />
R53<br />
R51<br />
R65<br />
R69<br />
+3V<br />
LAN_MRXD[0:3]<br />
LAN_MRXDV<br />
LAN_MRXER<br />
LAN_MRXC<br />
LAN_MTXE<br />
LAN_MTXC<br />
LAN_DCLK<br />
LAN_DADAIO<br />
LAN_COL<br />
LAN_CRS<br />
RXIN+<br />
RXIN-<br />
TXD+<br />
TXD-<br />
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