Apple G4 17-inch manual If you have trouble ejecting a disc

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ÂMake sure you are within antenna range of the other computer or the network’s access point by checking the AirPort Extreme or AirPort Express signal level. Check the AirPort status icon in the menu bar. Up to four bars appear to show signal strength.

Nearby electronic devices or metal structures can interfere with wireless communication and reduce this range. Repositioning or rotating the computer may improve reception.

ÂSee AirPort Help (choose Help > Mac Help, then choose Library > AirPort Help from the menu bar) and the instructions that came with the wireless device for more information.

If your computer’s hard disk is not recording data correctly

mIn a few instances, if the hard disk undergoes an unusually strong vibration, the Sudden Motion Sensor may become active and result in dropped frames or unrecorded portions of sound or data when the disk is recording intensively. If this occurs, make sure that your PowerBook is in a stable environment without vibration or abrupt movement.

If you have trouble ejecting a disc

mQuit any applications that may be using the disc and try again. If that doesn’t work, restart the computer while holding down the trackpad button.

If you suspect a problem with your computer hardware

mYou can use the Apple Hardware Test application to help determine if there is a problem with one of your computer’s components, such as the memory or processor.

For more information about Apple Hardware Test, see “Using Apple Hardware Test” on page 68.

If you have problems with your Internet connection

ÂMake sure your telephone line or network cable is connected and functioning properly.

ÂIf you are using a dial-up Internet connection, make sure that your telephone cord is plugged into the modem port (marked with the W icon) and not the Ethernet port (marked with the G icon) on the computer.

ÂOpen the Network pane of System Preferences and verify the information entered there with your Internet service provider (ISP) or network administrator.

If you have a problem using your computer or working with the Mac OS

ÂIf the answers to your questions are not in this manual, look in Mac OS Help for instructions and troubleshooting information.

ÂCheck the Apple Support website at www.apple.com/support for the latest troubleshooting information and software updates.

Chapter 5 Troubleshooting