Rosewill Computer Case 422 Informações Técnicas descarregar pdf (Página 38)

Electrostatic Discharge (ESD)

121

Disassembly

and Power

Adjustable wrist strap

Alligator clip

Figure 4.1 Antistatic wrist strap

Figure 4.2 Attaching an antistatic wrist strap

Antistatic bags are good for storing spare adapters and motherboards when the parts are

not in use. However, antistatic bags lose their effectiveness after a few years. Antistatic mats are

available to place underneath a computer being repaired; such a mat may have a snap for con-

necting the antistatic wrist strap. Antistatic heel straps are also available.

If an antistatic wrist strap is not available, you can still reduce the chance of ESD damage.

After removing the computer case, stay attached to an unpainted metal computer part. One

such part is the power supply. If you are right-handed, place your bare left arm on the power

supply. Remove the computer parts one by one, always keeping your left elbow (or some other

bare part of your arm) connected to the power supply. If you are left-handed, place your right

arm on the power supply. By placing your elbow on the power supply, both hands are free to

remove computer parts. This method is an effective way of keeping the technician and the

computer at the same voltage potential, thus reducing the chance of ESD damage. It is not

as safe as using an antistatic wrist strap. Also, removing the power cable from the back of the

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Rosewill Computer Case 422 Informações Técnicas Página 38