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82 Appendix B
Safety Instructions for Setting Up and Using Your Computer
Plugging in the Power Adapter
Always leave space around your power adapter. Do not use this equipment in a location
where airflow around the power adapter or computer is confined. Always disconnect the
power adapter and remove the battery before opening the computer to perform procedures
such as installing memory or removing the hard disk.
Connecting a Phone Line to the Internal Modem
Always disconnect the phone cord before opening the computer to perform procedures
such as installing memory or removing the hard disk.
Using Your PowerBook
When using your PowerBook or when charging the battery, it is normal for the bottom of the
case to get warm. For prolonged use, place your PowerBook on a flat, stable surface. The
bottom of the PowerBook case functions as a cooling surface that transfers heat from inside
the computer to the cooler air outside. The bottom of the case is raised slightly to allow
airflow that keeps the unit within normal operating temperatures.
Warning Use only the power adapter that came with your PowerBook computer.
Adapters for other electronic devices (including other PowerBook models and other
portable computers) may look similar, but they may damage your computer.
Warning Do not connect a digital telephone line to the modem, because the wrong type
of line could damage the modem.
Warning Do not place your PowerBook on a pillow or other soft material when it is on,
as the material may block the airflow vents and cause the computer to overheat. Never
place anything over your keyboard before closing the display. This can cause your
computer to cycle on and off which may create excessive heat and drain your battery.
Never turn on your computer unless all of its internal and external parts are in place.
Operating the computer when it is open or missing parts can be dangerous and can
damage your computer.
Warning Permanent hearing loss may occur if earphones or headphones are used at
high volume. You can adapt over time to a higher volume of sound, which may sound
normal but can be damaging to your hearing.
LL2222.Book Page 82 Friday, December 13, 2002 12:11 PM