Compaq Presario 7000 Series Manuel d'utilisateur télécharger pdf (Page 50)

The method for ground must include a wrist strap or a foot strap at a grounded

workstation. When seated, wear a wrist strap connected to a grounded system. When

standing, use footstraps and a grounded floor mat.

Static-Shielding Protection Levels

Method

Antistatic Plastic Carbon-Loaded Plastic Metallized Laminate

Voltages

1,500 7,500 15,000

Grounding Workstations

To provent static damage at the workstation, use the following precautions:

Cover the workstation with approved static-dissipative material. Provide a wrist

strap connected to the work surface and properly grounded tools and equipment.

Use static-dissipative mats, heel straps, or air ionizers to give added protection.2.

Handle electrostatic-sensitive components, parts, and assemblies by the case or PCB

laminate. Handle them only at static-free workstations.

Avoid contact with pins, leads, or circuitry.4.

Turn off power and input signals before inserting and removing connectors or test

equipment.

Use fixtures made of static-safe materials when fixtures must contact dissipative

surfaces directly.

Keep work area free of nonconductive materials such as ordinary plastic assembly

aids and Styrofoam.

Use field service tools, such as cutters, screwdrivers, and vacuums that are

conductive.

Use a portable field service kit with a static dissipative vinyl pouch that folds out of a

work mat. Also use a wrist strap and a ground cord for the work surface. Ground the

cord to the chassis of the equipment undergoing test or repair.

Ground Equipment

Use the following equipment to prevent static electricity damage to the equipment:

Wrist Straps are flexible straps with a minimum of 1 megohm plus or minus 10%

resistance to the ground cords. To provide proper ground, a strap must be worn snugly

against the skin. On grounded mats without banana-plug connectors, connect a wrist

strap to the mat with alligator clips.

Heelstraps/Toestraps/Bootstraps can be used at standing workstations and are compatible

with most types of boots and shoes. On conductive fllors or dissipative floor mats, use

them on both feet with a minimum of 1 megohm resistance between operator and ground.

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Compaq Presario 7000 Series Manuel d'utilisateur Page 50