Apple G4 manual Important Ergonomic and Health-Related Information, Maintaining Your Display

Page 86

Maintaining Your Display

To maintain your display and ensure its long life:

mDo not press on the surface of the display screen.

mDo not write on the screen or touch the screen with a sharp object.

mIf you will not be using your display and computer for a day or more, turn off the computer and display or use Energy Saver.

mTurn off your monitor, turn down the brightness, or use a screen-saver program that dims or varies the image on the screen when the computer is idle for a prolonged time.

Important Ergonomic and Health-Related Information

Here are some guidelines for adjusting the furniture in your office to reduce glare and to accommodate your physical size and shape.

mAn adjustable chair that provides firm, comfortable support is best. Adjust the height of the chair so your thighs are tilted slightly and your feet are flat on the floor.

The back of the chair should support your lower back (lumbar region). Follow the manufacturer’s instructions for adjusting the backrest to fit your body properly.

mWhen you use the computer keyboard, your shoulders should be relaxed. Your upper arm and forearm should form an approximate right angle, with your wrist and hand in roughly a straight line.

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).

86Appendix B

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Contents Setting Up Your Power Mac G4 Apple Computer, Inc Contents Important Ergonomic and Health-Related Information Installing MemoryInstalling a PCI Expansion Card or Replacing the AGP Card Working Inside Your ComputerSetting Up Positioning the Computer and DisplayPlugging In the Computer You can skip this step115 USB ports ADC monitor port VGA monitor port Modem port Ethernet port Need Help? What’s Next? When You’re Not Using the ComputerAdjusting Your Monitor Page If You Are New to the Mac This ChapterYour Computer at a Glance Opens the drive tray Ports and Connectors-Expanding Your Computer’s Capabilities Connect a phone cord to the internal modem Drive position Slots 2-5 33 MHz PCI slots Slot 1 AGP slot Hard disk drive carriers Sherlock 2-Your Internet Search Detective Tips and Tricks What You Can DoTo Get Started To Learn MoreITools-Free Internet Services for Mac Users KidSafeCreate an alias of your iDisk for easy access IReview Apple.com-Your Starting Place on the World Wide WebApple Support Volume control Play button Favorites drawer QuickTime-Audio and Video on the InternetWhat You Can Do IMovie 2-Create and Edit Your Own Digital Movies PlayheadShare your desktop iMovie with your friends and family Set Schedule Adjust your Software Update schedule Multiple Users-Turn One Mac Into Many AccountsCreate a voice print passphrase Mac Help-Answers to All Your Macintosh Questions Using Your Computer Customizing Function Keys Using Your Apple Pro Keyboard and Apple Pro MouseUsing the Standard Function Keys Using Your Apple Pro Mouse For More Information About Your Keyboard and MouseUsing USB Devices Connecting Multiple USB Devices For More Information on USBUsing FireWire Devices These are some of the things you can do with FireWireFireWire Target Disk Mode For More Information on FireWireEjecting a Disc Using Your CD or DVD DriveInserting a Disc Playing DVD and Audio Discs Using Your ModemUsing an External USB Modem For More Information on Your CD or DVD DriveConnecting to an Ethernet Network For More Information on Using Ethernet Using AirPort Wireless Networking How AirPort Provides Wireless Internet AccessFor More Information on AirPort Wireless Network ConnectionsPutting the Computer to Sleep to Save Energy Attaching Scsi Devices to Your Computer Using the Computer as a Server Without a Monitor Transferring Information Between Two Macintosh ComputersPage Working Inside Your Computer Unplug the power cord Opening the ComputerPage Installing Memory Close the computer Installing Internal Storage Devices Installing Ultra ATA Drives Unplug the power cord bundle from the main logic boardRemove the power cord bundle from the drive Page Install the ATA drive in the U-shaped bracket Replace the carrier and drive Plug the power cord bundles into the hard disk drives Plug the power cord bundle back into the main logic board Installing Ultra160 LVD Scsi Drives When you attach the drive to the carrierWhen you replace the carrier and reconnect the drive cables About PCI Expansion Cards Installing a PCI Expansion Card or Replacing the AGP CardAbout AGP Cards Installing Your Card One of these five card guides Working Inside Your Computer Installing an AirPort Card AirPort Card connectorReplacing the Battery Chapter Troubleshooting Software Problems Reset the computer’s parameter random-access memory PramContact an Apple-authorized service provider If that doesn’t work, or if you hear tones during startupProblems With Your Display Make sure the display is connected firmly to the computer 32, 64, 128, 256, or 512 MB DIMMs Processor and Memory SpecificationsDimensions and Operating Environment CD-ROM and CD-RW Drive Specifications DVD-R/CD-RW Drive SpecificationsSpeed 53 kilobits per second Kbps Data transfer speed 100, 200, and 400 MbpsIeee 802.3 compliant Frequency 50-60 hertz Hz AGP card with Apple Display Connector and VGA connectorAmperes a maximum at 28 V DC in the Apple Display Connector System Clock and Battery Computer can provide up to 15 W total to the FireWire portsPower Requirements for Devices You Can Connect Page Safety, Maintenance, and Ergonomics Important Safety InformationAppendix B General Maintenance Protecting Your CD or DVD DriveImportant Ergonomic and Health-Related Information Maintaining Your DisplayShoulders relaxed Wavelength 790 nm Power out of objective lens 3.3mW
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