MPC Profile 6.5, Technical Reference Manual

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CHAPTER 2: Upgrading Your Computer
16
Opening the case
Your computer case provides easy access to internal components.
Removing the back panel
To remove the back panel:
1
Before opening the computer case, protect yourself from electric shock by following these
guidelines:
•
Turn off your computer.
•
Disconnect the power cord and modem, network, and all peripheral device cables.
2
The components inside your computer are extremely sensitive to static electricity, also known
as electrostatic discharge (ESD). Before opening the computer case, follow these guidelines
to prevent electrostatic discharge:
•
Wear a grounding wrist strap (available at most electronics stores) and attach it to a bare
metal part of your computer.
•
Avoid static-causing surfaces such as carpeted floors, plastic, and packing foam.
•
Touch a bare metal surface on the side of the computer.
3
Before working with new or replacement computer components, follow these guidelines:
•
Remove components from their antistatic bags only when you are ready to use them.
Do not lay components on the outside of antistatic bags because only the inside of the
bags provide electrostatic protection.
•
Always hold expansion cards by their edges or their metal mounting brackets. Avoid
touching the edge connectors and components on the cards. Never slide expansion cards
or components over any surface.
4
Place your computer face-down on a clean, soft, dry surface. (Although the photographs show
the computer upright, you should place your computer face-down during servicing to avoid
tipping it over.)
Warning
To avoid exposure to dangerous electrical voltages and moving parts, turn off your
computer and unplug the power cord and modem and network cables before opening the case.
To prevent risk of electric shock, do not insert any object into the vent holes of the power
supply.