Apple iBook G4 manual Connecting Speakers and Audio Devices, Battery

Connecting Speakers and Audio Devices

Your iBook G4 comes with two built-in speakers, a built-in microphone, and a headphone (audio line out) port.

You can connect external speakers, headphones, and other sound output devices to the headphone port. The headphone port is a stereo 3.5 mini-phono jack.

You can record sound onto your hard disk using the built-in microphone. You can also connect external USB microphones or other audio equipment to the USB port. For applications, such as iMovie, that can record sounds, use the Sound pane of System Preferences to select the audio input device you want to use, including microphones connected via USB.

The volume controls on your keyboard allow you to easily change volume. You can also access these controls from the Sound pane of System Preferences.

For more information about using or troubleshooting sound on your computer, open Mac OS Help and search for “sound.”

Battery

When the external power adapter is not connected, your computer draws power from its battery. Depending on the applications you use and external devices connected to your iBook G4, you may find that the length of time that you can run your iBook G4 off one battery charge varies. Turning off features such as AirPort Extreme or Bluetooth® wireless technology can help to conserve battery charge. For more information about using your battery, see “Charging a Battery” on page 47.

You can determine the charge left in your battery by looking at the battery level indicator lights on the battery itself. Press the button next to the lights and the lights glow to show how much charge is left in the battery. The indicator lights remain lit for a few seconds after you press the button. You can check the charge with the battery in or out of your iBook G4.

If your battery runs low while you are working, attach your power adapter and let the battery recharge. If you want to replace the battery with a charged one, attach the power adapter, shut down your iBook G4, and replace the battery. If you replace the battery without the power adapter attached, you may lose information and settings such as the date and time.

Chapter 3 Using Your Computer

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