Apple Mac Pro (Early 2009) User Manual download pdf (Page 89)

Chapter 4 Problem, Meet Solution 89

Using Apple Hardware Test

If you suspect a problem with your Mac Pro hardware, use the Apple Hardware Test

application to help determine if there’s a problem with one of the computer’s

components, such as the memory or processor.

To use Apple Hardware Test:

1 Disconnect all external devices from your Mac Pro, except the keyboard and mouse.

If you have an Ethernet cable connected, disconnect it.

2 Restart your Mac Pro while holding down the D key.

3 When the Apple Hardware Test chooser screen appears, select the language you want

to use.

4 Press the Return key or click the right arrow button.

5 When the Apple Hardware Test main screen appears (after about 45 seconds), follow

the onscreen instructions.

6 If Apple Hardware Test detects a problem, it displays an error code. Make a note of the

error code before pursuing support options. If Apple Hardware Test doesn’t detect a

hardware failure, the problem may be software-related.

If this procedure doesn’t work, you can insert the Applications Install DVD that came

with your Mac Pro to use Apple Hardware Test. For more information, see the Apple

Hardware Test Read Me file on the Applications Install DVD.

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Apple Mac Pro (Early 2009) User Manual Page 89