Справочник Пользователя для Apple LATE 2009

Mac mini (Late 2009) Symptom Charts — Input/Output Devices 

 2009-11-03

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 

computer. Make sure to try each port to isolate a 

particular port malfunction.
Test with a known good wired keyboard to 

isolate a failed peripheral issue. 
Test the keyboard on another Mac. If it works 

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 

been applied to the computer for access to the 

latest bug fixes.

Do any of the keys on the 

keyboard work?

Yes

Go to step 2

No

Go to USB Port Doesn’t 

Recognize Devices symptom

Is the Caps Lock working as 

expected?

Yes

Go to step 3

No

Go to Keyboard: Specific keys 

do not respond symptom

Is the media Eject key working 

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 > 

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