User Guide

8081
8081
N/B Maintenance
N/B Maintenance
123
8.11 LAN Test Error
An error occurs when a LAN device is installed.
LAN Test Error
Yes
No
Test
OK?
No
Check if BIOS setup is ok.
Re-test
OK?
Board-level
Troubleshooting
Check the following parts for cold solder or one of the following
parts on the mother-board may be defective, use an oscilloscope
to check the following signal or replace the parts one at a time and
test after each replacement.
Parts: Signals:
1.Check if the driver is installed properly.
2.Check if the notebook connect with the
LAN properly.
Yes
PCI_GNT1#
PCI_PAR
AD[0:31]
CBE#]0:3]
RXIN+
RXIN-
TXD+
TXD-
EECS
EESK
EEDI
EEDO
U521
U9
U517
U513
U519
J506
Q508
Q506
U11
JL10
R667
L524
L525
+LAN_A2.5V
+LAN_D2.5V
CARD_RI#
PCICLK_LAN
PCIRST#
IN_PIRQE#
PCI_REQ1
PCI_FRAME#
PCI_DEVSEL#
PCI_TRDY#
PCI_IRDY#
PCI_PME#
PCI_STOP#
Correct it.
Correct it.
Replace
Motherboard