Apple LC 580 manual Pointer 8 freezes on the screen

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If you are trying unsuccessfully to use a DOS floppy disk, consider the following:

mWhen formatting floppy disks on a DOS computer for use in a Macintosh, users need to format standard double-sided disks as 720K disks and high- density disks as 1440K disks. Because DOS computers allow standard double-sided disks to be formatted in 1440K format and high-density disks to be formatted in 720K format, it’s possible that your disk has been given a format that won’t work in a Macintosh.

If you think your DOS floppy disk might have a format that doesn’t work in a Macintosh, use a DOS computer to copy the contents of your DOS floppy disk onto another DOS floppy disk that has been properly formatted for use in a Macintosh.

The pointer (8) freezes on the screen.

Your system has a software problem.

mPress x-Option-Esc to quit the application program in use when the problem occurred. If this works, you can save the documents open in other programs before restarting.

mRestart your Macintosh. (For instructions, see “Start Over” in the section “When You Run Into Trouble” earlier in this chapter.) Most software problems are temporary, and restarting usually corrects the problem.

mCheck the startup disk and program you were using when the problem occurred. Make sure that all programs, desk accessories, and system extensions you’re using are compatible with the system software.

mSometimes incompatible system extensions or control panels can cause system software problems. Restart while holding down the Shift key; this temporarily turns off all system extensions. If your computer works normally after you do this, remove all extensions from the Extensions folder (inside the System Folder) and put them back into the Extensions folder one at a time. Restart after you add each extension. This procedure should identify any incompatible extensions.

You can also use the Extensions Manager control panel to turn off individual extensions. For information on using this control panel to

manage system extensions, see the “Setting Options” topic of Macintosh Guide, available in the Guide (h) menu.

mIf the problem recurs, you may need to reinstall system software. See “Installing or Reinstalling System Software” later in this chapter for instructions.

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Contents User’s Guide Apple Computer, Inc Contents Expanding Your Computer and Using Special Features TroubleshootingIndex Appendix a Health, Safety, and Maintenance TipsRadio and television interference FCC statementVcci statement CD-ROM drive DOC statementMacintosh computer Keyboard cable Keyboard Computer power cord Mouse Optional security screwsPlugging in the computer Getting StartedWhen you are ready to begin, follow these steps Installing an expansion card Connecting a keyboard with a separate cable Connecting the mouse and keyboardConnecting a keyboard with a built-in cable Connecting other equipmentTurning the computer on for the first time Hard disk icon Macintosh desktop Problems starting up? What’s next? Slide your mouse along your mouse pad or desk Learning the basicsGuide h menu Reviewing the basicsTurning the computer off You can also shut down your computer from the keyboard Turning the computer onClick Shut Down Other manuals Where to find answersThis book Guide menuGetting Help Getting answers to your questions Macintosh Guide window, click the Topics button Getting answers with the Topics buttonRead and follow the instructions in this window Click Setting Options in the list of topicsSmall window appears with instructions for you to follow Now continue with the next sectionMacintosh Guide window, click the Index button Getting answers with the Index buttonRead and follow the instructions in the window Macintosh Guide window, click the Look For button Getting answers with the Look For buttonIf you want to close Macintosh Guide, click here Tips for using Macintosh Guide Identifying objects on the screen Main Macintosh Shortcuts window appears Learning useful shortcutsClick one of the category buttons Expanding Your Computer Stereo speakers Your computer at a glanceBuilt-in microphone Sound control buttons ¸ Screen control ButtonsConnecting additional equipment Using the sound control buttons on your computer Using the screen control buttons on your computer Doing so may damage your equipment Using the built-in microphoneConnecting to a network Expanding memory Installing internal drivesInstalling and Using Application Programs Installing application programs Working with several programs at a time Switching programsFinding out which programs are open Hiding and showing windows on the desktop Backing up your filesWhen you run into trouble When you have questionsTake your time Start over Click OK Rebuild your desktop regularlyComputer is turned on but the screen is dark Solutions to common problemsComputer’s clock keeps time inaccurately Chapter Hard disk icon does not appear on the desktop Sad Macintosh icon appears and the computer won’t start upYour Macintosh can’t read a floppy disk Icons do not appear correctly on your screenPointer 8 freezes on the screen Dialog box with a bomb appears Pointer 8 doesn’t move when you move the mouseTyping on the keyboard produces nothing on the screen Chapter Troubleshooting You see a message that an application program can’t be found You experience problems using a document from a DOS computer Initializing a hard disk When do you need to initialize a hard disk?Starting up from a CD-ROM disc Turn on the computer Starting up from a floppy diskCD-ROM disc will remain in the CD-ROM drive Shut down your computerType a name for your disk in the Name box When initialization is complete, click DoneReinitializing your computer’s internal hard disk Double-click the Internal HD Format icon to open itInitializing an external Scsi hard disk Open the Apple HD SC Setup iconClick Drive until the disk you want to initialize appears Click Init to initialize the hard disk Disks can become damaged by repeated use and handling Repairing a damaged diskWhen do you need to repair a disk? Try these suggestions firstChoose Scan All Blocks from the Functions menu Testing an external Scsi hard diskChecking for damage on your internal hard disk Open the Internal HD Format iconClick Drive until the disk you want appears Open the Disk First Aid icon How to repair a hard disk or floppy diskClick the icon of the disk you want to test Click Repair to begin testing and repairing the disk If Disk First Aid cannot correct the problemWhen should you install system software? Installing or reinstalling system softwareWhen should you reinstall system software? Open the Apple HD SC Setup program Installing system softwareFind and open the Disk First Aid icon Easy Install dialog box appears Doing a clean installation of system software Find and open the Apple HD SC Setup icon To do a clean installation, follow these stepsClick Continue Hold down Shift-x-K to start the clean installationClick the Install New System Folder button and click OK Following dialog box appearsClick Clean Install It takes a few minutes to complete the installationChoose Custom Install from the pop-up menu Doing a custom installationRestart your Macintosh Health-related information about computer use Appendix a Health, Safety, and Maintenance TipsMusculoskeletal discomfort Arranging your office Eye fatigueShoulders relaxed What about electromagnetic emissions? Avoiding fatigueSafety instructions Handling your computer equipment Handling the keyboard Handling the built-in monitorEjecting a disk Handling floppy disksIf you can’t eject a floppy disk Power supplyCleaning the mouse Cleaning your equipmentCleaning the computer case Cleaning the monitorRotate the rollers to clean all around them Recessed area on ring Recessed area surrounding ring Locking and unlocking the mouseTo unlock the mouse, follow these steps Appendix B Installing an Expansion Card Opening the computer Installing an Expansion Card Remove the two retainer screws from the vertical plate Remove the plastic access cover from the vertical plate Installing a processor-direct slot PDS cardAlign the card over the processor-direct slot Align the card over the communication slot Installing a communication cardCommunication slot is the rightmost slot on the logic board Remove the communication card from its static-proof bagClosing the computer Press the reset button Reinsert the two retainer screws into the vertical plate Replace the back panel of the computer Special keys on Apple keyboards Arrow keys Caps Lock key Clear key Command keyEnter key Power key Return keyControl key Delete keyIndex Index Index Index Index Index Index Apple Publishing System