Apple 550 series, 570 series manual Typing on the keyboard produces nothing on the screen

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Typing on the keyboard produces nothing on the screen.

One of the following is probably the cause:

mYour system has a software problem.

Restart your Macintosh. For instructions, see “Start Over” in the section “When You Run Into Trouble” earlier in this chapter.

Check the startup disk and application 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.

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

mYou haven’t selected any text or set the insertion point (9).

Make sure the program you want to type in is the active program. Then place the pointer (8) in the active window and click to set an insertion point (9) or drag to select text (if you want to replace the text with your typing).

mThe keyboard is not connected properly.

Turn off the computer using the power switch, then check that the keyboard cable is connected properly at both ends.

If you have a keyboard with an ADB port (marked with the icon) on each end, turn off the Macintosh using the power switch and plug the keyboard cable into the other ADB port on the keyboard. (You may have to unplug the mouse to do this.) Then restart the computer.

Many Macintosh computers have two ADB ports on the back panel. Also, some monitors have one or two ADB ports. Turn off the Macintosh using the power switch and connect your keyboard cable to a different ADB port on the computer or monitor. Then restart the computer.

mThe keyboard is damaged.

If you have access to another keyboard, try using it instead. (Turn the computer off before connecting it.) If the new keyboard works, there is probably something wrong with the one you replaced.

If none of these procedures solves the problem, consult the service and support information that came with your computer for instructions on how to contact an Apple-authorized service provider or Apple for assistance.

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Contents User’s Guide Apple Computer, Inc Apple Publishing SystemContents Troubleshooting Expanding Your Computer and Using Special FeaturesAppendix B Appendix CIndex FCC statement Radio and television interferenceDOC statement Vcci statement CD-ROM driveKeyboard and keyboard cable Mouse Macintosh Performa computer Keyboard cableKeyboard Optional security screwsGetting 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 built-in cableComputer Connecting a keyboard with a separate cable ADB portConnecting other equipment Turning the computer on for the first time Check to see what’s on your screen Problems turning your computer on? What’s next? Learning the basics Slide your mouse along your mouse pad or deskReviewing the basics Without moving the mouse, click the mouse buttonGuide h menu Turning the computer on Press the Power key marked with a triangle on the keyboardTurning the computer off Click Shut DownGuide menu Where to find answersThis book 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 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 Click one of the category buttonsChapter Expanding Your Computer Screen control Buttons Your computer at a glanceBuilt-in microphone Sound control buttons Stereo speakersPrinter port Modem port Scsi port ≈ Sound input port Where to connect additional equipment≤ Power plug Power switch ADB port Hard disk drive internalUsing the sound control buttons on your computer Using the screen control buttons on your computer Using the built-in microphone Connecting to a network Installing internal drives Expanding memoryUsing Programs and Backing Up Disks Installing application programs Switching programs Working with several programs at a timeFinding out which programs are open Protecting the information on a disk Hiding and showing windows on the desktopBacking up your files Using Programs and Backing Up Disks Click the Applications grouping button in the Launcher Using Apple Backup for the first timeClick the Apple Backup button in the Launcher window Click the Continue buttonClick the appropriate button, as follows Insert a high-density floppy disk into the disk driveUsing Apple Backup to update your backup copy Unlock your first backup floppy disk Click the button that corresponds to your choiceInsert the disk into the floppy disk drive When the disk is ejected, lock and label it Restoring the information on your hard diskStore the disks in a safe, cool place Using Apple Restore A moment you’ll see this screenInsert your first backup floppy disk Respond to any messages you see on the screenWhen 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 desktop Icons do not appear correctly on your screenYour Macintosh can’t read a floppy disk Pointer 8 doesn’t move when you move the mouse Dialog box with a bomb appearsTroubleshooting Typing on the keyboard produces nothing on the screen Troubleshooting You see a message that an application program can’t be found You experience problems using a document from a DOS computer Repairing a damaged disk Try these suggestions firstStarting up from a CD-ROM disc If you see a blinking question mark on your screenIf you see the Macintosh desktop Problems starting up from the CD? Starting up from a floppy diskHow to test a hard disk How to repair a hard disk or floppy disk If Disk First Aid cannot correct the problem Click Repair to begin testing and repairing the diskWhen do you need to initialize a hard disk? Initializing a hard diskHow to initialize a hard disk Click InitializeClick Init to initialize the hard disk Installing or reinstalling system software When should you install or reinstall system software?How to install or reinstall system software Page 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 the monitor Cleaning your equipmentCleaning the computer case Cleaning the mouseRotate the rollers to clean all around them Appendix B Installing an Expansion Card Opening the computer Installing an Expansion Card Appendix B Installing the card Installing a processor-direct slot PDS cardAlign the card over the processor-direct slot Remove the communications card from its static-proof bag Align the card over the communications slotClosing the computer Slide the logic board backReplace the back panel of the computer Caps Lock key Clear key Command key Special keys on Apple keyboards Arrow keysEnter key Control keyDelete key Escape keyIndex Macintosh Performa CD CD-ROM drive 28, 34 cleaning Floppy disks. See also Utilities disk backing up Index Index Index Startup disk. See also Macintosh Performa CD Utilities disk Utilities disk Apple Computer, Inc

570 series, 550 series specifications

The Apple 550 and 570 series are notable entries in Apple's lineup of devices, typically recognized for their blend of performance, efficiency, and user-friendly design. With a focus on delivering high-quality features, these series have attracted attention from both tech enthusiasts and general consumers alike.

The Apple 550 series is anchored by its sleek design, often characterized by an aluminum chassis and vibrant Retina display. One of the standout features of this series is its use of the M1 chip, which enhances performance across applications while maintaining impressive battery life. This chip, based on ARM architecture, integrates an 8-core CPU and an 8-core GPU, allowing for seamless multitasking and exceptional graphics performance. Additionally, the 550 series boasts elevated RAM options, making it suitable for power users and professionals in creative fields.

On the other hand, the Apple 570 series builds on the foundation of its predecessor, offering new advancements while retaining core features that users love. The 570 series also utilizes the M1 chip, but with the evolution of the series, Apple may introduce enhancements such as increased clock speeds or supplementary cores for even greater performance gains. This series is often highlighted for its advanced thermal management system, ensuring that the devices run cooler under heavy workloads.

Both series support industry-leading technologies such as Thunderbolt 3 and USB-C, enabling high-speed data transfer and versatile connectivity options. This feature is particularly beneficial for users who require fast access to external storage, displays, or docks. Furthermore, these devices typically come with upgraded audio systems that provide clear, immersive sound, enhancing the multimedia experience for users, whether during casual listening or professional production.

In terms of build quality, both the 550 and 570 series are designed with sustainability in mind, incorporating recycled materials and energy-efficient components. They also run on macOS, which offers a robust ecosystem, ensuring a seamless user experience across Apple devices.

With exceptional performance, cutting-edge technologies, and commitment to sustainability, the Apple 550 and 570 series stand out as impressive offerings within the technology landscape, catering to a diverse range of users from everyday consumers to creative professionals.
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