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Chapter 3. Diagnostics 19
8. When prompted as to whether you want to save the current code to a diskette,
select N.
9. When prompted to choose a language, select a language (from 0 to 7) and press
Enter to accept your choice.
10. Do not reboot your system at this time.
11. Remove the BIOS Flash Diskette from the diskette drive.
12. Turn the server off.
13. Move the jumper on J19 to pins 2 and 3 to return to normal startup mode.
14. Restart the server. The system should start up normally.
Troubleshooting the Ethernet controller
This section provides troubleshooting information for problems that might occur with
the 10/100 Mbps Ethernet controller:
Network connection problems
If the Ethernet controller cannot connect to the network, check the following:
• Make sure that the cable is installed correctly.
The network cable must be securely attached at all connections. If the cable is
attached but the problem persists, try a different cable.
If you set the Ethernet controller to operate at 100 Mbps, you must use Category 5
cabling.
If you directly connect two workstations (without a hub), or if you are not using a
hub with X ports, use a crossover cable.
Note: To determine whether a hub has an X port, check the port label. If the label
contains an X, the hub has an X port.
• Determine if the hub supports auto-negotiation. If not, try configuring the
integrated Ethernet controller manually to match the speed and duplex mode of
the hub.
• Check the LAN activity light on the front of the server. The LAN activity light
illuminates when the Ethernet controller sends or receives data over the Ethernet
Network. If the LAN activity light is off, make sure that the hub and network are
operating and that the correct device drivers are loaded.
• Make sure that you are using the correct device drivers, supplied with the server.
• Check for operating system-specific causes for the problem.
• Make sure that the device drivers on the client and server are using the same
protocol.
• Test the Ethernet controller:
How you test the Ethernet controller depends on which operating system you are
using (see the Ethernet controller device driver README file).
Ethernet controller troubleshooting chart
You can use the following troubleshooting chart to find solutions to 10/100 Mbps
Ethernet controller problems that have definite symptoms.