Compaq 100 armada 100s Manuales De Servicio

Writer: David Calvert    Saved by: The Integrity Group    Saved date: 09/26/00 2:34 PM

Part Number: 177845-002    File name: Ch04

 Use the following grounding precautions at workstations:

■ 

Cover the workstation with approved static-dissipative material
(refer to Table 4-2 later in this chapter).

■ 

Use a wrist strap connected to a properly grounded work surface and
use properly grounded tools and equipment.

■ 

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

■ 

When using fixtures that must directly contact dissipative surfaces,
use fixtures made of static-safe materials only.

■ 

Keep work area free of nonconductive materials such as ordinary
plastic assembly aids and Styrofoam.

■ 

Handle electrostatic-sensitive components, parts, and assemblies by
the case or PCM laminate. Handle them only at static-free
workstations.

■ 

Avoid contact with pins, leads, or circuitry.

■ 

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

 Grounding equipment must include either a wrist strap or a foot strap at
a grounded workstation.

■ 

When seated, wear a wrist strap connected to a grounded system.
Wrist straps are flexible straps with a minimum of one megaohm

±

10% resistance in the ground cords. To provide proper ground,

wear a strap snug against the skin at all times. On grounded mats
with banana-plug connectors, connect a wrist strap with alligator
clips.

■ 

When standing, use foot straps and a grounded floor mat. Foot
straps (heel, toe, or 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 minimum of one-megohm resistance between the operator
and ground. To be effective, the conductive strips must be worn in
contact with the skin.