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4-2 Dell OptiPlex GX
pro
Systems Service Manual
P
recautionary Measures
Before you perform any of the procedures in this chapter, take a few moments
to read the following warning for your personal safety and to prevent damage to
the computer system from ESD.
WARNING FOR YOUR PERSONAL SAFETY
AND PROTECTION OF THE EQUIPMENT:
Before you start to work on the computer, perform the following steps in
the sequence indicated.
1. Turn off the system unit and any attached peripherals.
2. Disconnect the system unit and any attached peripherals from their
power sources to reduce the potential for personal injury or shock.
3. Wear a wrist grounding strap, and clip it to an unpainted metal sur-
face, such as the system power supply’s fan guard, on the chassis.
If a wrist grounding strap is not available, touch the fan guard or
some other unpainted metal surface on the back of the system unit to
discharge any static charge from your body.