6.11 LAN Failure
An error occurs when a LAN device is installed.
LAN Failure
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
U712
U701
J703
EL745
EL706
EL707
EL708
R716
R715
C728
C729
PLT_RST#
PCIE_WAKE#
LAN_CLKREQ#
LAN_PCIE_RXN
LAN_PCIE_RXP
LAN_PCIE_TXP
LAN_PCIE_TXN
CLK_PCIE_LANP
CLK_PCIE_LANN
LAN_ISOLATEB
Correct it.
Correct it.
Replace
Motherboard