222   Reference and Troubleshooting Guide 
 
301-Keyboard Error 
Audible Beeps: None 
Possible Cause: Keyboard failure occurred. 
Action: 
1.  Power down the server, and then reconnect the keyboard. 
2.  Be sure no keys are depressed or stuck. 
3.  If the failure reoccurs, replace the keyboard. 
 
 
301-Keyboard Error or Test Fixture Installed 
Audible Beeps: None 
Possible Cause: Keyboard failure occurred. 
Action: 
1.  Power down the server, and then reconnect the keyboard. 
2.  Be sure no keys are depressed or stuck. 
3.  If the failure reoccurs, replace the keyboard. 
 
303-Keyboard Controller Error 
Audible Beeps: None 
Possible Cause: System board, keyboard, or mouse controller failure occurred. 
Action: 
1.  Be sure the keyboard and mouse are connected. 
  CAUTION:  Only authorized technicians trained by HP should 
attempt to remove the system board. If you believe the system board 
requires replacement, contact HP Technical Support before proceeding.