Dell Dimension 2100 - Manual (Page 10)

10
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When Working Inside Your Computer
Before you open the computer cover, perform the following steps in the
sequence indicated.
NOTICE: Do not attempt to service the computer yourself, except as
explained in this guide and elsewhere in Dell documentation or at the guidance
of a Dell support technician. Always follow installation and service instructions
closely.
1 Turn off your computer.
2 Turn off all devices.
monitor screen at or
below eye level
wrists relaxed
and flat
computer positioned
directly in front of
user
arms at desk
level
feet flat on the
floor