Apple Mac mini Late 2009 (Technician Guide) - Manual (Page 71)

Mac mini (Late 2009) Symptom Charts — Input/Output Devices 71 2009-11-03
Wired Keyboard Does Not Function Properly
Quick Check
Symptoms Quick Check
Wired Keyboard Does Not
Function Properly
Some or all keys on the •
keyboard don’t work
Eject key or Caps Lock key
•
doesn’t seem to work
Some keys don’t work as
•
expected
The system has 5 USB ports on the rear of the 1.
computer. Make sure to try each port to isolate a
particular port malfunction.
Test with a known good wired keyboard to
2.
isolate a failed peripheral issue.
Test the keyboard on another Mac. If it works
3.
here, you may have bad USB port if the keyboard
doesn’t work at all, or a software issue if the
keyboard is working but not as expected.
Ensure that all available Software Updates have
4.
been applied to the computer for access to the
latest bug fixes.
Deep Dive
Check Result Action Code
Do any of the keys on the 1.
keyboard work?
Yes Go to step 2
No Go to USB Port Doesn’t
Recognize Devices symptom
Is the Caps Lock working as 2.
expected?
Yes Go to step 3
No Go to Keyboard: Specific keys
do not respond symptom
Is the media Eject key working 3.
as expected?
Yes Go to step 4
No To prevent accidentally
ejecting media, Mac OS X
adds a slight delay to the
Media Eject key before it
takes effect. Go to step 5
Open System Preferences > 4.
Speech. Is “Speak selected
text when the key is pressed”
enabled?
Yes The key combination to speak
text cannot be used for any
other purpose. Either disable,
or change to a more rare
key combination (including
Shift, Command, Option and
Control).
No Go to step 6 M15