Apple 6400 appendix Solutions to common problems with your computer

Solutions to common problems with your computer

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 included 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:

mYou have a screen saver program that darkens the screen when the computer has not been used for a certain period of time.

Press a key or move the mouse to turn off the screen saver.

mYour computer has gone to sleep due to inactivity. “Wake it up” by pressing the power key (marked with a triangle) on the keyboard.

mThe monitor’s brightness control (¸) is not adjusted properly. Check the monitor’s brightness control and turn it up if necessary.

mThe Macintosh or the monitor is not getting power.

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. 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.

If you are displaying video from your computer on a television screen, it is normal for your computer monitor to be dark.

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.

WARNING Do not attempt to replace the clock battery yourself. If the clock begins to lose accuracy, see your Apple-authorized dealer or service provider for a battery replacement.

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