Apple LC 580 manual Shoulders relaxed

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Shoulders relaxed

Forearms and hands in a straight line

Forearms level or tilted up slightly

Lower back supported

Thighs horizontal

You may have to raise your chair so your forearms and hands are at the proper angle to the keyboard. If this makes it impossible to rest your feet flat on the floor, you can use a footrest with adjustable height and tilt to make up for any gap between the floor and your feet. Or you may lower the desktop to eliminate the need for a footrest. Another option is to use a desk with a keyboard tray that’s lower than the regular work surface.

mPosition the mouse at the same height as your keyboard. Allow adequate space to use the mouse comfortably.

mArrange the monitor so the top of the screen is slightly below your eye level when you’re sitting at the keyboard. The best distance from your eyes to the screen is up to you, although most people seem to prefer 18 to 28 inches (45 to 70 cm).

mPosition the computer to minimize glare and reflections on the screen from overhead lights and windows.

45–70 cm (18–28 in.)

Top of the screen at or slightly below eye level (You may need to adjust the height of your computer by placing something under it or by raising your work surface.)

Screen positioned to avoid reflected glare

Clearance under work surface

Feet flat on the floor

76Appendix A

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Contents User’s Guide Apple Computer, Inc Contents Troubleshooting Expanding Your Computer and Using Special FeaturesAppendix a Health, Safety, and Maintenance Tips IndexFCC statement Radio and television interferenceDOC statement Vcci statement CD-ROM driveKeyboard Computer power cord Mouse Optional security screws Macintosh computer Keyboard cableGetting Started Plugging in the computerWhen you are ready to begin, follow these steps Installing an expansion card Connecting the mouse and keyboard Connecting a keyboard with a separate cableConnecting other equipment Connecting a keyboard with a built-in cableTurning the computer on for the first time Hard disk icon Macintosh desktop Problems starting up? What’s next? Learning the basics Slide your mouse along your mouse pad or deskReviewing the basics Guide h menuTurning the computer off Turning the computer on You can also shut down your computer from the keyboardClick Shut Down Where to find answers This bookGuide menu Other manualsGetting Help Getting answers to your questions Getting answers with the Topics button Macintosh Guide window, click the Topics buttonClick Setting Options in the list of topics Small window appears with instructions for you to followNow continue with the next section Read and follow the instructions in this windowGetting answers with the Index button Macintosh Guide window, click the Index buttonRead and follow the instructions in the window Getting answers with the Look For button Macintosh Guide window, click the Look For buttonIf you want to close Macintosh Guide, click here Tips for using Macintosh Guide Identifying objects on the screen Learning useful shortcuts Main Macintosh Shortcuts window appearsClick one of the category buttons Expanding Your Computer Your computer at a glance Built-in microphone Sound control buttons¸ Screen control Buttons Stereo speakersConnecting additional equipment Using the sound control buttons on your computer Using the screen control buttons on your computer Using the built-in microphone Doing so may damage your equipmentConnecting to a network Installing internal drives Expanding memoryInstalling and Using Application Programs Installing application programs Switching programs Working with several programs at a timeFinding out which programs are open Backing up your files Hiding and showing windows on the desktopWhen you have questions When you run into troubleTake your time Start over Rebuild your desktop regularly Click OKSolutions to common problems Computer is turned on but the screen is darkComputer’s clock keeps time inaccurately Chapter Sad Macintosh icon appears and the computer won’t start up Hard disk icon does not appear on the desktopIcons do not appear correctly on your screen Your Macintosh can’t read a floppy diskPointer 8 freezes on the screen Pointer 8 doesn’t move when you move the mouse Dialog box with a bomb appearsTyping 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 When do you need to initialize a hard disk? Initializing a hard diskStarting up from a CD-ROM disc Starting up from a floppy disk CD-ROM disc will remain in the CD-ROM driveShut down your computer Turn on the computerWhen initialization is complete, click Done Reinitializing your computer’s internal hard diskDouble-click the Internal HD Format icon to open it Type a name for your disk in the Name boxOpen the Apple HD SC Setup icon Initializing an external Scsi hard diskClick Drive until the disk you want to initialize appears Click Init to initialize the hard disk Repairing a damaged disk When do you need to repair a disk?Try these suggestions first Disks can become damaged by repeated use and handlingTesting an external Scsi hard disk Checking for damage on your internal hard diskOpen the Internal HD Format icon Choose Scan All Blocks from the Functions menuClick Drive until the disk you want appears How to repair a hard disk or floppy disk Open the Disk First Aid iconClick the icon of the disk you want to test If Disk First Aid cannot correct the problem Click Repair to begin testing and repairing the diskInstalling or reinstalling system software When should you install system software?When should you reinstall system software? Installing system software Open the Apple HD SC Setup programFind and open the Disk First Aid icon Easy Install dialog box appears Doing a clean installation of system software To do a clean installation, follow these steps Find and open the Apple HD SC Setup iconHold down Shift-x-K to start the clean installation Click the Install New System Folder button and click OKFollowing dialog box appears Click ContinueIt takes a few minutes to complete the installation Click Clean InstallDoing a custom installation Choose Custom Install from the pop-up menuRestart your Macintosh Appendix a Health, Safety, and Maintenance Tips Health-related information about computer useMusculoskeletal discomfort Eye fatigue Arranging your officeShoulders relaxed Avoiding fatigue What about electromagnetic emissions?Safety instructions Handling your computer equipment Handling the built-in monitor Handling the keyboardHandling floppy disks Ejecting a diskPower supply If you can’t eject a floppy diskCleaning your equipment Cleaning the computer caseCleaning the monitor Cleaning the mouseRotate the rollers to clean all around them Locking and unlocking the mouse Recessed area on ring Recessed area surrounding ringTo 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 Installing a processor-direct slot PDS card Remove the plastic access cover from the vertical plateAlign the card over the processor-direct slot Installing a communication card Communication slot is the rightmost slot on the logic boardRemove the communication card from its static-proof bag Align the card over the communication slotClosing the computer Press the reset button Reinsert the two retainer screws into the vertical plate Replace the back panel of the computer Caps Lock key Clear key Command key Special keys on Apple keyboards Arrow keysPower key Return key Control keyDelete key Enter keyIndex Index Index Index Index Index Index Apple Publishing System