Service manual

Chapter 5 Troubleshooting
56
CAUTION The Keyboard and Mouse ports are both PS/2 ports, but are not interchangeable. If
you plug the keyboard into the Mouse port, or the mouse into the Keyboard port, you
will get an error message and the system will not finish the boot process.
1. Review the Troubleshooting Checklist before you continue.
2. Ensure the keyboard is not locked, by checking the Keyboard Lock LED on the front panel to
see if the system is in secure mode.
3. If the keyboard is locked, enter the password before using the keyboard and the monitor.
4. Ensure the keyboard cable connection at the rear of the server is securely and correctly
attached.
5. If the problem persists, turn off the NetServer by using the power button.
6. Then turn the NetServer on to reset it.
7. If the POST finds an error, resolve the error and/or replace the faulty part.
8. Try replacing the keyboard with a known good keyboard.
9. If the problem persists, have the system board replaced.
10. Once a suspect part has been found, verify it is the problem by reinstalling the part and
duplicating the error.
The mouse does not work or is intermittent
If your mouse or other input device is not working, do the following:
1. Review the Troubleshooting Checklist before you continue.
2. Verify the mouse cable is properly and securely connected to the NetServer.
3. Verify the mouse/keyboard port does not have a resource conflict.
4. Verify the correct mouse driver has been installed onto the boot drive.
Refer to the mouse's manual.
5. Try to use a known good mouse and verify if the problem stops.
6. If the problem persists, turn off the NetServer using the power button.
7. Wait a few seconds, then turn the NetServer on to reset it.
8. Reboot the NetServer.
If POST finds an error, replace the faulty part.
9. If the problem persists, have the system board replaced.
10. Once a suspected part has been found, verify it is the problem by reinstalling the part and
duplicating the error.
Network Interface Problems
Use this topic to help solve any NIC (Network Interface Card) problems.
If the adapter can't connect to the network:
• Ensure the cabling is installed properly.
Most hub and switch connections require straight-through cable; consult their documentation. If
you're directly connecting two computers (with no hub or other device), use a crossover cable.