Performing Hardware Diagnostic - MAC
This document covers how to carry out the Hardware Diagnostic Tests for a mac.
Disconnect all external devices from the mac.
Except for the Keyboard, Mouse, Display, Ethernet and AC Power
Ensure the Mac is on a hard, flat, stable surface with good ventilation.
Shutdown the mac.
Power the mac back on.
Ensure you hold the D key on the keyboard as the machine powers on.
Ensure you hold the key until a screen appears asking for your language.
When you select the language the diagnostics will begin.
When the diagnostics end, you will be presented with references codes/solutions depending on the outcome of the diagnostic tests.
Ensure you make a note/take photos of the error codes. If required, send these to the HelpDesk.
Shutdown or Restart the machine.
Press R to restart.
Press S to shutdown.