Service manual

Chapter 5 Troubleshooting
57
• Check the LEDs on the adapter at the back of the computer.
• Ensure you're using the correct drivers.
• Ensure the drivers used are intended for this adapter.
• Verify the port on the switch or hub (or other device) and the adapter have the same duplex
setting.
If you configured the adapter for full duplex, ensure the switch port is also configured for full
duplex. Setting the wrong duplex mode can degrade performance, cause data loss, or result in
lost connections.
• Test the adapter.
Test the adapter as directed in the installation tasks for each operating system. Also check the
“readme” files on the support disk.
Power Problems
Use this topic to help solve the power supply module problems. Each power supply module has an LED on
the rear panel. These status indicators reflect the functional condition of the module. The table below
provides the LED states and the condition associated with each:
AC Power
Inlets
Power
Supply #1
Redundant
Power
Supply #2
(Optional)
Power Supply Module Status LEDs