Service manual

129
8258I N/B Maintenance
8258I N/B Maintenance
8.9 LAN Test Error-1
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
U515
U514
U510
J505
X503
Q525
EL530
EL531
EL541
EL543
EL540
R606~609
R631~639
R651
R653
+3V +2.5V
DVDD AVDDL
MDI[0,1]+/- TX+/-
WAKE_UP# MCT3/4
LAN_RST# PJ7/4
PCICLK_LAN RX+/-
LAN_WAKE PJTX+/-
PCI_AD[0..31] PJRX+/-
PCI_C/BE#[0..3] PCLK_RUN#
PCI_INTE# PCI_STOP#
PCI_IRDY# PCI_TRDY#
PCI_PAR PCI_PERR#
PCI_PME# PCI_GNT0#
PCI_REQ0# PCI_FRAME#
PCI_DEVSEL#
Correct it.
Correct it.
Replace
Motherboard
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