What's an ASD EFI test to diagnose Macs?

[rodion15]

I'm starting a job as service technician and I'm using ASD to test our macs by pressing the But I don't know how an ASD EFI test is done, what key combination? ALT key, we have a server for that. I sometimes do a hardware diagnostic (pressing D or alt+D). Is it simply another way to call the ASD or MRI test? Do you need a usb flash drive for that?

Also: what's an ASD OS, how do you do these tests?

Thank you

 

[DelJo63]

ASD:- do you mean Automatic Self Diag?

 

[rodion15]

ASD:- do you mean Automatic Self Diag?

ASD Apple service diagnostic

 

[DelJo63]

See this https://support.apple.com/en-us/HT201255

 

[cliffordcooley]

This link may help clear up some confusion.
http://www.scribd.com/doc/19082397/Apple-Service-Diagnostic-User-Guide#scribd

 

[rodion15]

See this https://support.apple.com/en-us/HT201255

Thanks, that's good.