Name: Apple Service Diagnostics
Mac Platform: Intel
OS version: 10.8 or later
Processor type(s) & speed: 64-bit Intel
RAM minimum: 4 GB
Video RAM: not needed
About Apple Service Diagnostics 3S135
Apple Service Diagnostics (ASD) is distributed to Apple Service Providers. The Apple Service Diagnostics application is designed to run both EFI
and Mac OS X tests from an external USB hard drive. Apple Service Diagnostics (EFI) runs low-level tests of the hardware directly and does not
require Mac OS X, while Apple Service Diagnostics (OS) uses Mac OS X to run tests.
Installing Apple Service Diagnostics on a USB hard drive
Please refer to the document "Installing ASD on a USB hard drive" included with this release.
Booting and using the Apple Service Diagnostics application
Before using Apple Service Diagnostics, disconnect any Ethernet network, USB, and audio cables.
With the USB hard drive containing ASD OS 3S135 and ASD EFI 3S135 plugged into a USB port, restart the computer and hold down the option
key as the computer boots up into the Boot Picker. To run ASD (EFI) select the "ASD EFI 3S135" drive icon and press return or select it with a
mouse click. To run ASD (OS) select the "ASD OS 3S135" drive icon and press return or select it with a mouse click. ASD (EFI) will load in
20-30 seconds; ASD (OS) will load in 1-2 minutes. After running ASD (OS) or ASD (EFI), press the Shut Down button to shut down the
computer. Removed the USB drive.
Changes to ASD 3S135
EFI user interface has been changed to better match the OS
Supports the following machines
MacBook (13-inch, Late 2009)
iMac (21.5-inch, Late 2009)
iMac (27-inch, Late 2009)
Mac mini (Late 2009)