Users Manual

To start Apple Diagnostics on MacBook Air, restart the computer and hold the power
button for 10 seconds to open Startup Options, then hold Command-D to enter
Diagnostics mode.
If prompted, select the language for your location. Press the Return key or click the right
arrow button. The basic Apple Diagnostics test takes a few minutes to complete. If an
issue is found, a description of the issue appears with additional instructions. Make a
note of any reference codes before you exit Apple Diagnostics, in case you need to
contact AppleCare support.
Online resources. For online service and support information, go to
. You can learn about Apple products, view online manuals, check for software
updates, connect with other Apple users, and get service, support, and professional
advice from Apple. For more information about your MacBook Air, see
.
AppleCare support. If you need assistance, AppleCare representatives can help you
with installing and opening apps, and with troubleshooting. Call the support center
number nearest you (the first 90 days are complimentary). Have the purchase date and
your MacBook Air serial number ready when you call.
A complete list of support telephone numbers is available on the web at
. Telephone numbers are subject to change, and local and national
telephone rates may apply.
Your 90 days of complimentary telephone support begins on the date of purchase.
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