Typical electrostatic voltage levels
Relative humidity
Event
10%
40%
55%
Walking across carpet
35,000 V
15,000 V
7,500 V
Walking across vinyl floor
12,000 V
5,000 V
3,000 V
Motions of bench worker
6,000 V
800 V
400 V
Removing DIPS from plastic tube
2,000 V
700 V
400 V
Removing DIPS from vinyl tray
11,500 V
4,000 V
2,000 V
Removing DIPS from Styrofoam
14,500 V
5,000 V
3,500 V
Removing bubble pack from PCB
26,500 V
20,000 V
7,000 V
Packing PCBs in foam-lined box
21,000 V
11,000 V
5,000 V
Packaging and transporting guidelines
Follow these grounding guidelines when packaging and transporting equipment:
●
To avoid hand contact, transport products in static-safe tubes, bags, or boxes.
●
Protect ESD-sensitive parts and assemblies with conductive or approved containers or packaging.
●
Keep ESD-sensitive parts in their containers until the parts arrive at static-free workstations.
●
Place items on a grounded surface before removing items from their containers.
●
Always be properly grounded when touching a component or assembly.
●
Store reusable ESD-sensitive parts from assemblies in protective packaging or non-conductive foam.
●
Use transporters and conveyors made of antistatic belts and roller bushings. Be sure that mechanized
equipment used for moving materials is wired to ground and that proper materials are selected to avoid
static charging. When grounding is not possible, use an ionizer to dissipate electric charges.
Workstation guidelines
Follow these grounding workstation guidelines:
●
Cover the workstation with approved static-shielding material.
●
Use a wrist strap connected to a properly grounded work surface and use properly grounded tools and
equipment.
●
Use conductive field service tools, such as cutters, screwdrivers, and vacuums.
●
When fixtures must directly contact dissipative surfaces, use fixtures made only of static-
safe materials.
●
Keep the work area free of nonconductive materials, such as ordinary plastic assembly aids
and Styrofoam.
●
Handle ESD-sensitive components, parts, and assemblies by the case or PCM laminate. Handle these
items only at static-free workstations.
Grounding guidelines
27
Summary of Contents for Pavilion 2159m
Page 1: ...HP Pavilion Notebook AMD Maintenance and Service Guide ...
Page 4: ...iv Safety warning notice ...
Page 8: ...14 Recycling 97 Index 99 viii ...
Page 12: ...4 Chapter 1 Product description ...
Page 32: ...24 Chapter 3 Illustrated parts catalog ...
Page 40: ...32 Chapter 5 Removal and replacement procedures for Customer Self Repair parts ...
Page 80: ...72 Chapter 8 Using Setup Utility BIOS in Windows 8 1 ...
Page 88: ...80 Chapter 10 Backing up restoring and recovering in Windows 8 1 ...
Page 100: ...92 Chapter 12 Specifications ...
Page 104: ...96 Chapter 13 Power cord set requirements ...
Page 106: ...98 Chapter 14 Recycling ...
Page 110: ...102 Index ...
