Ethernet Controller Troubleshooting Chart - IBM IntelliStation M Pro 6225 Hardware Maintenance Manual And Troubleshooting Manual

Ethernet controller troubleshooting chart

Use the following troubleshooting chart to find solutions to 10/100/1000 Mbps
Ethernet controller problems that have definite symptoms.
Ethernet controller
problem
The computer stopped
running when loading
device drivers.
Ethernet link status LED
does not work.
Data is incorrect or
sporadic.
The Ethernet controller
stopped working when
another adapter was
added to the computer.
The Ethernet controller
stopped working without
apparent cause.
FRU/actions
The PCI BIOS interrupt settings are incorrect.
v Determine whether the interrupt (IRQ) setting assigned to the Ethernet controller is also
assigned to another device in the Configuration/Setup Utility program.
Although interrupt sharing is allowed for PCI devices, some devices do not function well
when they share an interrupt with a dissimilar PCI device. Try changing the IRQ
assigned to the Ethernet controller or the other device. For example, for NetWare
Versions 3 and 4, it is recommended that disk controllers not share interrupts with LAN
controllers.
v Make sure that you are using the most recent device driver available from the World
Wide Web.
v Reseat or replace the adapter.
v Make sure that the hub is turned on.
v Check all connections at the Ethernet controller and the hub.
v Use another port on the hub.
v If the hub does not support auto-negotiation, manually configure the Ethernet controller
to match the hub.
v If you manually configured the duplex mode, make sure that you also manually configure
the speed.
v Reseat or replace the adapter.
v Make sure that you are using Category 5 or higher cabling when operating the computer
at 100 Mbps or at 1000 Mbps.
v Make sure that the cables do not run close to noise-inducing sources such as
fluorescent lights.
v Make sure that the cable is connected to the Ethernet controller.
v Make sure that the PCI system BIOS code is current.
v Reseat the adapter.
v Determine whether the interrupt (IRQ) setting assigned to the Ethernet adapter is also
assigned to another device in the computer. Use the Configuration/Setup Utility program
to determine if this is the case.
Although interrupt sharing is allowed for PCI devices, some devices do not function well
when they share an interrupt with a dissimilar PCI device. Try changing the IRQ
assigned to the Ethernet adapter or the other device.
v Reseat or replace the adapter.
v Try a different connector on the hub.
v Reinstall the device drivers. See the operating-system documentation.
v Reseat or replace the adapter.
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Chapter 3. Diagnostics