HP Dx5150 HP Business Desktop dx5150 Series Service Reference Guide, 1st Editi - Page 54

Identifying the Chassis, Routine Care, and Disassembly Preparation ■ 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 one-megohm ± 10% resistance between the operator and ground. Static Shielding Protection Levels Method Voltage Antistatic plastic Carbon-loaded plastic Metallized laminate 1,500 7,500 15,000 5.2.4 Grounding the Work Area To prevent static damage at the work area, use the following precautions: ■ Cover the work surface with approved static-dissipative material. Provide a wrist strap connected to the work surface and 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 work area free of nonconductive materials such as ordinary plastic assembly aids and Styrofoam. ■ Use conductive field service tools, such as cutters, screwdrivers, and vacuums. 5.2.5 Recommended Materials and Equipment Materials and equipment recommended for use in preventing static electricity include: ■ 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 one-megohm +/- 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 one-megohm +/- 10% resistance ■ Material handling packages ■ Conductive plastic bags ■ Conductive plastic tubes 5-4 361685-001 Service Reference Guide, dx5150