User Guide

Mac mini Troubleshooting - 29
Symptom Charts
Keyboard
No response from any key on the USB keyboard
1. Check that the mouse and keyboard are compliant. The Mac mini has two USB 2.0
ports, which can be used with any USB 1.1- or USB 2.0-compliant keyboard and
mouse.
2. Remove any connected peripherals.
3. Boot from the Mac mini Mac OS X system DVD to verify that it is not a software
problem.
4. Disconnect the keyboard connector and inspect connectors.
5. Replace the keyboard.
6. Replace the logic board.
No response from the Wireless keyboard
1. Check System Profile to determine if the AirPort/Bluetooth are present.
2. Try a known-good wireless keyboard.
3. Replace the batteries in the wireless keyboard.
4. Replace the keyboard.
5. Remove the top housing.
6. Check for kinks in the Bluetooth antenna cable. Test the reception before replacing the
top housing.
7. If the reception goes away when the top housing is replaced, remove the top housing
and reseat the Bluetooth antenna on the internal frame. Test the reception again.
8. Make sure that the Bluetooth antenna is firmly connected to the Bluetooth board.
9. Make sure that the Bluetooth antenna is not damaged or warped on the receiver end
of the cable. Make sure that the antenna is properly seated to the internal frame of the
Mac mini.
10. Replace the Bluetooth antenna and test.
11. If the issue persists, replace the Bluetooth board.
12. Replace the mezzanine board.
13. Replace the logic board.