Apple Mac Pro (Early 2008) - Manual (Page 97)

Chapter 6 Last, but Not Least 97
 You suspect that your computer or display needs service or repair
 You want to clean the computer or the case or screen of the display
 If you plan to store your computer for an extended period of time, remove the
battery.
For service or questions about your warranty, contact an Apple Authorized Service
Provider or Apple. Service and support information is included with your computer’s
documentation.
General Maintenance
If you need to clean the computer or display by doing more than wiping it down with
a clean cloth, follow these instructions:
1 Turn off your computer and display.
2 Disconnect the computer power cable from the electrical outlet or power strip. If your
display is connected to an outlet, disconnect it as well.
3 Disconnect the display’s cables from the computer.
4 Clean the display screen with soft, lint-free paper or cloth dampened with mild soap
and water.
· WARNING: Do not spray liquid directly onto the display screen. Liquid could drip
inside the display and cause electrical shock.