Compaq Armada E700 Compaq ArmadaStation EM Maintenance and Service Guide - Page 27

Grounding Workstations, Grounding Equipment, Wrist Straps, Heelstraps/Toestraps/Bootstraps

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Grounding Workstations To prevent static damage at the workstation, follow these precautions: s Cover the workstation with approved static-dissipative material. Provide a wrist strap connected to the work surface and properly grounded tools and equipment. s Use static-dissipative mats, heel straps, or air ionizers to provide added protection. s Handle electrostatic sensitive components, parts, and assemblies by the case or PCB laminate. Handle them only at static-free workstations. s Avoid contact with pins, leads, or circuitry. s Turn off power and input signals before inserting and removing connectors or test equipment. s Use fixtures made of static-safe materials when fixtures must directly contact dissipative surfaces. s Keep work area free of conductive materials such as ordinary plastic assembly aids and plastic foam. s Use field service tools, such as cutters, screwdrivers, and vacuums, that are conductive. s Use a portable field service kit with a static-dissipative vinyl pouch that folds out into 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. Grounding Equipment Use the following equipment to prevent static electricity damage to equipment: Wrist Straps are flexible straps with a minimum of one megohm +/- 10% resistance in the ground cords. To provide proper ground, a strap must be worn snug against the skin. On grounded mats without banana-plug connectors, connect a wrist strap with alligator clips. Heelstraps/Toestraps/Bootstraps can be used at standing workstations and are compatible with most types of shoes or boots. On conductive floors or dissipative floor mats, use them on both feet with a minimum of one megohm resistance between the operator and ground. To be effective, the conductive strips must be worn in contact with the skin. 4-4 Removal and Replacement Preliminaries

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4-4
Removal and Replacement Preliminaries
Grounding Workstations
To prevent static damage at the workstation, follow these 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 provide added protection.
■
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.
■
Turn off power and input signals before inserting and removing connectors or test
equipment.
■
Use fixtures made of static-safe materials when fixtures must directly contact
dissipative surfaces.
■
Keep work area free of conductive materials such as ordinary plastic assembly aids
and plastic foam.
■
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
into 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.
Grounding Equipment
Use the following equipment to prevent static electricity damage to equipment:
Wrist Straps
are flexible straps with a minimum of one megohm +/- 10% resistance in
the ground cords. To provide proper ground, a strap must be worn snug against the skin.
On grounded mats without banana-plug connectors, connect a wrist strap with alligator
clips.
Heelstraps/Toestraps/Bootstraps
can be used at standing workstations and are
compatible with most types of shoes or boots. On conductive floors or dissipative floor
mats, use them on both feet with a minimum of one megohm resistance between the
operator and ground. To be effective, the conductive strips must be worn in contact with
the skin.