Apple PowerBook G3 - Manual (Page 70)

70 Chapter 3
Trouble With the External Video Device?
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Nothing happens when you tried to turn on the PowerBook.
Make sure your equipment is connected properly. Then try pressing the Power button
(®) again.
Make sure the battery is charged, or the power adapter is plugged into both the computer
and an electrical outlet. If you are using a power strip, make sure it is turned on.
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The computer is on, but the television is dark.
Select an NTSC or PAL compatible resolution from the Resolution icon in the Control
Strip. If the television is still dark, make sure that the television is on and set up to receive
video from an outside source. See the manual that came with your television or other
video device for more information. If this doesn’t work, try restarting your computer.
Note: The screen-dimming feature in the Energy Saver control panel turns the screen
brightness down to a low level when you haven’t used the computer for a few minutes.
Dimming also affects the television. When you move your finger on the trackpad or press
a key on the keyboard, the brightness is restored on both screens. For information on
screen dimming, see the online help, available in the Help menu.
Disconnecting an External Video Device
1 Make sure your computer is shut down or in sleep.
2 Make sure your television or other external video device is switched off.
3 Disconnect the S-video cable or S-video adapter from the S-video output port (Æ) on the
computer’s back panel.