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Heel straps/Toe straps/Boot straps 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
maximum of 1 MΩ ±10% resistance between the operator and ground.
Table 4-2
Static shielding protection levels
Static shielding protection levels
Method
Antistatic plastic
Carbon-loaded plastic
Metallized laminate
Grounding the work area
To prevent static damage at the work area, follow these precautions.
Cover the work surface with approved static-dissipative material.
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Use a wrist strap connected to a properly grounded work surface and use properly grounded tools and
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equipment.
Use static-dissipative mats, foot straps, or air ionizers to give added protection.
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Handle electrostatic sensitive components, parts, and assemblies by the case or PCB laminate. Handle them
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only at static-free work areas.
Turn off power and input signals before inserting and removing connectors or test equipment.
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Use fixtures made of static-safe materials when fixtures must directly contact dissipative surfaces.
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Keep the work area free of nonconductive materials, such as ordinary plastic assembly aids and polystyrene
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foam.
Use conductive field service tools, such as cutters, screwdrivers, and vacuums.
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Avoid contact with pins, leads, or circuitry.
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Recommended materials and equipment
HP recommends certain materials and equipment to prevent static electricity.
Antistatic tape
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Antistatic smocks, aprons, or sleeve protectors
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Conductive bins and other assembly or soldering aids
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Conductive foam
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Conductive tabletop workstations with ground cord of 1 MΩ ±10% resistance
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Static-dissipative table or floor mats with hard tie to ground
●
Field service kits
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Static awareness labels
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28
Chapter 4 Removal and replacement procedures preliminary requirements
Voltage
1,500
7,500
15,000
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