Troubleshooting 247
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.
2. Run Insight Diagnostics ("HP Insight Diagnostics" on page 126) and replace
failed components as indicated.
304-Keyboard or System Unit Error
Audible Beeps: None
Possible Cause: Keyboard, keyboard cable, mouse controller, or system board
failure.
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.
2. Run Insight Diagnostics ("HP Insight Diagnostics" on page 126) and replace
failed components as indicated.
400 Series
List of messages:
40X-Parallel Port X Address Assignment Conflict....................................................................248
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