Apple PowerBook (3400 series) - Manual (Page 71)

Note: The screen-dimming feature in the PowerBook control panel turns the
screen brightness down to a low level when you haven’t used the computer for
a few minutes. (You can think of dimming as “screen sleep.”) Dimming also
affects the external monitor. When you move your finger on the trackpad or
press a key on the keyboard, the brightness is restored on both screens. For
more information on screen dimming, see the “Batteries & Power” topic area
of Mac OS Guide, available in the Guide (h) menu.
Disconnecting an external monitor
1 Make sure your computer is shut down or in sleep.
2 Make sure your monitor is switched off.
3 Disconnect the monitor cable (for a VGA-style monitor) or monitor adapter (for an Apple
monitor) from the external monitor port on the computer’s back panel. The port is
marked with this icon:
™
.
External monitor port
Monitor adapter
(for Macintosh-compatible monitor only)
Monitor cable
(no adapter used for VGA-style monitor)
71 Connecting Additional Equipment