Grounding The Work Area; Recommended Materials And Equipment - HP 240 G8 Maintenance And Service Manual

Table 4-2
Static shielding protection levels
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.
● Use a wrist strap connected to a properly grounded work surface and use properly grounded tools and
equipment.
Use static-dissipative mats, foot straps, or air ionizers to give added protection.
●
Handle electrostatic sensitive components, parts, and assemblies by the case or PCB laminate. Handle
●
them only at static-free work areas.
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 the work area free of nonconductive materials, such as ordinary plastic assembly aids and
●
polystyrene foam.
Use conductive field service tools, such as cutters, screwdrivers, and vacuums.
●
● Avoid contact with pins, leads, or circuitry.

Recommended materials and equipment

HP recommends certain materials and equipment to prevent static electricity.
Antistatic tape
●
Antistatic smocks, aprons, or sleeve protectors
●
Conductive bins and other assembly or soldering aids
●
● Conductive foam
● Conductive tabletop workstations with ground cord of 1 MΩ ±10% resistance
Static-dissipative table or floor mats with hard tie to ground
●
Field service kits
●
Static awareness labels
●
Wrist straps and footwear straps providing 1 MΩ ±10% resistance
●
● Material handling packages
● Conductive plastic bags
Conductive plastic tubes
●
Conductive tote boxes
●
Opaque shielding bags
●
24 Chapter 4 Removal and replacement procedures preliminary requirements
Static shielding protection levels (continued)
7,500
15,000