Specifications

m The screen dims automatically when the batteries start to run low. You may
need to recharge or replace the batteries before you can turn up the
brightness.
m Screen dimming may be on. Press any key or touch the trackpad to restore
the screen’s brightness.
The screen is flickering.
m This problem sometimes occurs when your screen is set to display the
maximum number of colors or grays. Try adjusting the contrast control, or
select fewer colors or grays in the Monitors control panel.
The pointer moves too fast or too slowly.
m You need to adjust the pointer’s tracking speed. Open the Trackpad control
panel (or Mouse control panel if you have a mouse connected to your
PowerBook) and choose a more comfortable setting.
The pointer won’t move at all.
m A software problem may have caused the computer to “freeze.” Hold down
the Control, x (Command), and Power On (
I
) keys at the same time. You
will lose any work you have not saved.
A window has disappeared.
m Another open window on the desktop may have covered the window you’re
looking for. Move, resize, close, or hide windows you aren’t using until you
see the one you want.
m Windows belonging to open but inactive programs may be hidden. Choose
Show All from the Application menu (in the upper right-hand corner of
the desktop) to show hidden windows.
An icon is blinking in the menu bar.
m One of your programs needs your attention. For example, you may have set
the Alarm Clock to go off at a particular time, or PrintMonitor may be
alerting you to a printing problem. Make the program active and take the
necessary action.
120
Chapter 12