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Chapter 2 NAS Head 2-9
■ Did you press the power button?
■ Is the power on light illuminated?
■ Have any of the fan motors stopped (use the server management subsystem to
check the fan status)?
■ Are the fan power connectors properly connected to the server board?
■ Is the cable from the front panel board connected to the server board?
■ Are the power supply cables properly connected to the server board?
■ Are there any shorted wires caused by pinched cables or power connector plugs
forced into power connector sockets the wrong way?
If the switches and connections are correct and AC power is available at the wall
outlet, contact your service representative or authorized dealer for help.
2.2.3.4 Cannot Connect to a Server
Check the following:
■ Make sure the network cable is securely attached to the connector at the system
back panel. If the cable is attached but the problem persists, try a different cable.
■ Make sure the hub port is configured for the same duplex mode as the network
controller.
■ If you are directly connecting two servers (no hub), you will need a crossover
cable (see your hub documentation for more information on crossover cables).
■ Check the network controller LEDs that are visible through an opening at the
system back panel.
2.2.3.5 Problems with Network
If diagnostics pass, but the connection fails:
■ Make sure the network cable is securely attached.
The Activity LED does not light:
■ Make sure the network hub has power.
If the controller stopped working when an add-in adapter was installed:
■ Make sure the cable is connected to the port from the onboard network controller.
■ Try reseating the add in adapter.
If the add-in adapter stopped working without apparent cause:
■ Try reseating the adapter first; then try a different slot if necessary.