Characters are distorted or incorrect, System cooling fans do not rotate properly, Cannot connect to a server – Kontron NSN2U IP Network Server User Manual
Page 80: Diagnostics pass but the connection fails
79
Characters are Distorted or Incorrect
Check the following:
1
Are the brightness and contrast controls properly adjusted on the video
monitor?
See the manufacturer’s documentation.
1
Are the video monitor’s signal and power cables properly installed?
1
Does this video monitor work correctly if plugged into a different system?
System Cooling Fans do not Rotate Properly
If the system cooling fans are not operating properly, it is an indication of possible
system component failure.
Check the following:
1
Is the power-on light lit? If not, see
Section 7.4.1
,
“Power Light does not
Light”
.
1
Are any other front panel LEDs lit?
1
Have any of the fan motors stopped? Use the server management subsystem to
check the fan status.
1
Have the fans sped up in response to an overheating situation?
1
Have the fans sped up in response to a fan that has failed?
1
Are the fan power connectors properly connected to the front panel (FP) board?
1
Is the cable from the front panel board connected to the both the front panel
board and to the server board?
1
Are the power supply cables properly connected to the FP board?
1
Are there any shorted wires caused by pinched-cables or have power connector
plugs been forced into power connector sockets the wrong way?
Cannot Connect to a Server
1
Make sure the network cable is securely attached to the correct connector at
the system back panel.
1
Try a different network cable.
1
Make sure you are using the correct and the current drivers. Go to
for a link to the
drivers.
1
Make sure the driver is loaded and the protocols are bound.
1
Make sure the hub port is configured for the same duplex mode as the network
controller.
1
Make sure the correct networking software is installed.
1
If you are directly connecting two servers (without a hub), you will need a
crossover cable.
Diagnostics Pass but the Connection Fails
1
Make sure the network cable is securely attached.
1
Make sure you specify the correct frame type in your NET.CFG file.
The Controller Stopped Working When an Add-in Adapter was
Installed
1
Make sure the cable is connected to the port from the onboard network
controller.
1
Make sure your BIOS is current. Go to