Apple MB325LL Manual - Page 43

Using Apple Hardware Test

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Using Apple Hardware Test You can use Apple Hardware Test to help determine if there is a problem with your iMac hardware. To use Apple Hardware Test: 1 Disconnect all external devices from your iMac except the keyboard and mouse. If you have an Ethernet cable connected, disconnect it. 2 Restart your iMac while holding down the D key. 3 When the Apple Hardware Test chooser screen appears, select the language appropriate for your location. 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 Apple Hardware Test displays an error code if it detects a problem. 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 with your software. For more information, see the Apple Hardware Test Read Me file on the Mac OS X Install Disc 1. Chapter 4 Problem, Meet Solution 43

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Chapter 4
Problem, Meet Solution
43
U
sing
Apple
H
ardware
T
est
You can use Apple Hardware Test to help determine if there is a problem with your
iMac hardware.
To use Apple Hardware Test:
1
Disconnect all external devices from your iMac except the keyboard and mouse.
If you have an Ethernet cable connected, disconnect it.
2
Restart your iMac while holding down the D key.
3
When the Apple Hardware Test chooser screen appears, select the language
appropriate for your location.
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
Apple Hardware Test displays an error code if it detects a problem. 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 with your software.
For more information, see the Apple Hardware Test Read Me file on the Mac OS X
Install Disc 1.