Apple Macintosh Performa 6300CD Series - Manual (Page 63)

Solutions to common problems
This section contains descriptions of problems you could experience with
your computer. Some problems may be caused by your CD-ROM drive, so if
you don’t find your problem here, be sure to check the section “Solutions to
CD-ROM Problems,” later in this chapter.
The computer is turned on but the screen is dark.
One of the following is probably the cause:
m You have a screen saver program that darkens the screen when the
computer has not been used for a certain period.
Press a key or move the mouse to turn off the screen saver.
m The brightness (¤) and contrast (O) buttons are not adjusted properly.
Adjust the brightness and contrast of your monitor.
m The Macintosh or the monitor is not getting power.
Check that the monitor is plugged in and turned on, and that the monitor
cable is firmly connected to both the computer and the monitor.
Check that the computer’s power cord is firmly connected to the computer
and plugged into a grounded electrical outlet, and that the outlet has power.
If you have more than one monitor and only one is dark, check that it is set
up correctly in the Monitors control panel. For information on using more
than one monitor, see the “Monitors” topic of Macintosh Guide, available
in the Guide (h) menu.
The computer’s clock keeps time inaccurately.
Your computer has a clock that runs continuously. When the computer is
turned off, a battery keeps the clock running. If your clock begins to keep
time inaccurately, have your Apple-authorized service provider replace the
battery.
53 Troubleshooting