Apple eMac 2005 - Manual (Page 55)

Chapter 5 Troubleshooting 55
 See “Troubleshooting Your Connection” on page 80 for more information if you have
problems with your Internet connection.
If you have a problem using your computer or working with the Mac OS
 If the answers to your questions are not in this manual, look in Mac Help for
instructions and troubleshooting information.
 Check the Apple Support website at www.apple.com/support for the latest
troubleshooting information and software updates.
If your date and time settings get lost repeatedly
 You may need to replace the internal backup battery. See “Replacing the Internal
Backup Battery” on page 46 for more information.
Using Apple Hardware Test
You can use Apple Hardware Test to help determine if there is a problem with your
computer’s hardware.
To use Apple Hardware Test:
1 Disconnect all external devices from your computer except the keyboard and mouse.
If you have an Ethernet cable connected, disconnect it.
2 Insert the Mac OS X Install Disc 1 that came with your computer.
3 Restart your computer and hold down the Option key as it starts up. A list of available
startup volumes appears. Click Apple Hardware Test and click the right arrow.
4 When the Apple Hardware Test main screen appears (after about 45 seconds), follow
the onscreen instructions.
5 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 does not detect a
hardware failure, the problem may be software related.
For more information about Apple Hardware Test, see the Apple Hardware Test Read
Me file on the Mac OS X Install Disc 1 that came with your computer.
Locating Your Product Serial Number
You can find the serial number for your eMac on the inside of the optical drive door.
Press the Media Eject (C) key on the keyboard to open the door. While holding the door
open, push the Media Eject key again to retract the drive tray. If you can’t turn on your
computer, you can open the drive door using your fingernail.
LL298586J.book Page 55 Thursday, March 10, 2005 9:49 AM