Specifications

68 Chapter 5
Opening the Computer
1 To shut down your computer:
m In Mac OS X, choose Shut Down from the Apple (K) menu.
m In Mac OS 9, choose Shut Down from the Special menu.
Wait five to ten minutes to allow the computer’s internal components to cool.
2 Unplug all the cables from the computer except the power cord.
3 Touch the metal PCI access covers on the back of the computer to discharge any static charge.
4 Unplug the power cord.
Warning Always shut down your Power Mac G4 before opening it to avoid damaging its
internal components or the components you want to install. Do not open the computer or
attempt to install items inside it while it is turned on. After shutting down your computer,
the internal components can be very hot. Let the computer cool down before continuing.
Touch the metal
portion of the PCI
port access covers.
Important Always do this before you touch any parts, or install any components, inside
the computer. To avoid generating static electricity, do not walk around the room until you
have finished installing the expansion card, memory, or internal storage device and closed
the computer.
Warning The power supply in your computer is a high-voltage component and should
not be opened for any reason, even when the computer is off. If the power supply needs
service, contact your Apple-authorized dealer or service provider.