Typing on the keyboard produces nothing on the screen.
One of the following is probably the cause:
mYour system has a software problem.
Restart your Macintosh. For instructions, see “Start Over” in the section
“When You Run Into Trouble” earlier in this chapter.
Check the startup disk and application program you were using when the
problem occurred. Make sure that all programs, desk accessories, and
system e x tensions you’re using are compatible with the system software.
If the problem recurs, you may need to reinstall system software. See
“Installing or Reinstalling System Software” later in this chapter for
instructions.
mYou haven’t selected any text or set the insertion point (i).
Make sure the program you want to type in is the active program. Then
place the pointer (8)in the active window and click to set an insertion
point (i) or drag to select text (if you want to replace the text with your
typing).
mThe keyboard is not connected properly.
Turn off the computer using the standby power button, then check that the
keyboard cable is connected properly at both ends.
If you have a keyboard with an ADBpor t (marked with the◊icon) on
each end, turn off the Macintosh using the standby power button and plug
the keyboard cable into the other ADB port on the keyboard. (You may
have to unplug the mouse to do this.) Then restart the computer.
Many Macintosh computers have two ADBports on the back panel. Also,
some monitors have one or two ADBports. Turn off the Macintosh using
the standby power button and connect your keyboard cable to a different
ADB port on the computer or monitor. Then restart the computer.
mThe keyboard is damaged.
If you have access to another keyboard, try using it instead. (Turn the
computer off before connecting it.) If the new keyboard works, there is
probably something wrong with the one you replaced.
If none of these procedures solves the problem, consult the service and
support information that came with your computer for instructions on how
to contact an Apple-authorized service provider or Apple for assistance.
53
Troubleshooting