Macintosh LC 550 SERIES Operation & User’s Manual

111, restarting Macintosh 41, 42, 44 sad Macintosh icon 45 screen display 7, 43, 46, 49–50 SCSI devices 44, 45, 58, 59 starting applications 51 starting the computer 7 startup disk 44, 46, 47 startup problems 58 system extensions 47 System Folder 66 system software 44, 45, 4…

69, 61 Troubleshooting 3Click the icon of the disk you want to test. Disk icons appear in a box at the top of the Disk First Aid window. 4Click Repair to begin testing and repairing the disk. You can’t repair the startup disk or the disk that contains the Disk First Aid program, but you can te…

82, Musculoskeletal discomfort As with any activity that involves sitting for long periods of time, using a computer can make your muscles sore and stiff. To minimize these effects, set up your work environment carefully, using the guidelines that follow, and take frequent breaks to re…

87, Handling your computer equipment Follow these guidelines for handling your computer and its components: m When setting up your computer, place components on a sturdy, flat surface, and carefully follow all setup instructions. m When connecting or disconnecting a cable, always hold t…

58, If the problem recurs, you may need to reinstall system software. See “Installing or Reinstalling System Software” later in this chapter for instructions. m You 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 pl…

51, Macintosh LC 550 SERIES 43 Troubleshooting Solutions to common problems 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 th…