Observe safety rules when working inside the system and when handling computer components. Avoid electric shock or personal injury by observing the following warning.
WARNING: before removing the system unit cover, turn off the power and unplug the system power cable. Power is removed only when the power cable is unplugged.
WARNING: your computer's internal components are highly susceptible to risk of damage from electrostatic discharge (static electricity, which occurs naturally on your body due to friction). To avoid damaging your equipment, always earth yourself to your computer system before opening the computer's chassis or handling any internal component(s).
To do this, use the following procedure:
For best results, we strongly recommend you purchase an anti-static wrist strap (available at electronic supply stores). To use it, connect the strap's metal “alligator clip” to an unpainted metal portion of your computer's chassis.
Then connect the elastic wrist band to the strap, and slide the wrist band onto your wrist.
Note: if you do not have a wrist strap, you can earth yourself by touching (and maintaining continuous contact with) an unpainted metal part of the computer's chassis while handling any of your computer's internal components or working inside the system.
Select a suitable work space
Avoid carpets in cool, dry areas.
When you work on a carpet where static electricity is likely to be generated, make sure take anti-static measures beforehand.
Do not wear a wool or synthetic cloth to work with the computer.
Wear anti-static shoes to work with the computer.
Take off any jewels (a ring, bracelet, or wrist watch) before working with the computer.
Handling of components
Keep any component in an anti-static bag until you actually install it to the computer.
Hold an component by its edge to avoid touching any terminals or parts.
To store or carry any component, place it in an anti-static bag.
Turn off and disconnect all peripherals.
Do not disassemble parts other than those specified in the procedure.
Label any cable connectors before disconnecting. Note where the connector goes and in what position it was installed.
Take care when connecting or disconnecting cables. A damaged cable can cause a short in the electrical circuit.
When installing a cable, route the cable so it is not pinched by other components and is out of the path of the system unit cover.
Prevent damage to the connectors by aligning connector pins before you connect the cable. Misaligned connector pins can cause damage to system components at power-on.
When disconnecting a cable, always pull on the cable connector or strain-relief loop, not on the cable itself.
When working inside your computer, you must replace the chassis cover and secure it with the screws before plugging in the power cable and turning it on.