Apple G4 17-inch - Manual (Page 82)

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 drive.
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.
Important Using a power adapter from another electronic device or third-party portable
computer with your PowerBook G4 may damage your computer. Your PowerBook is
designed to use the 65-Watt Apple Portable Power Adapter that came with your computer.
Although you can use a 45-Watt Apple power adapter, it may not provide sufficient power
during some activities and power may be drawn from the battery temporarily. If your battery
discharges, you may need to use your 65-Watt Apple Portable Power Adapter to start up 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.
Important
When using dual display or video mirroring with an external display connected
to your PowerBook, keep the PowerBook open at least 90 degrees to ensure proper air
circulation and heat dissipation over the keyboard.