HP Armada 4200 Armada 4100 and 4200 Families of Personal Computers Maintenance - Page 85

Preventing Damage to Drives, Grounding Methods, Table 4-2, Static-Shielding Protection Levels

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4.1.4 Preventing Damage to Drives To prevent static damage to hard drives, use the following precautions: s Handle drives gently, using static-guarding techniques. s Store drives in the original shipping containers. s Avoid dropping drives from any height onto any surface. s Handle drives on surfaces that have at least one inch of shockproof foam. s Always place drives with the PCB assembly-side down on the foam. 4.1.5 Grounding Methods The method for grounding must include a wrist strap or a foot strap at a grounded workstation. When seated, wear a wrist strap connected to a grounded system. When standing, use footstraps and a grounded floor mat. Method Antistatic plastic Carbon-loaded plastic Metallized laminate Table 4-2 Static-Shielding Protection Levels Voltages 1,500 7,500 15,000 Removal and Replacement Preliminaries 4-3

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Removal and Replacement Preliminaries
4-3
4.1.4
Preventing Damage to Drives
To prevent static damage to hard drives, use the following precautions:
■
Handle drives gently, using static-guarding techniques.
■
Store drives in the original shipping containers.
■
Avoid dropping drives from any height onto any surface.
■
Handle drives on surfaces that have at least one inch of shockproof foam.
■
Always place drives with the PCB assembly-side down on the foam.
4.1.5
Grounding Methods
The method for grounding must include a wrist strap or a foot strap at
a grounded workstation. When seated, wear a wrist strap connected to a grounded
system. When standing, use footstraps and a grounded floor mat.
Table 4-2
Static-Shielding Protection Levels
Method
Voltages
Antistatic plastic
1,500
Carbon-loaded plastic
7,500
Metallized laminate
15,000