HP t420 Troubleshooting Guide - Page 45

Electrostatic discharge, Preventing electrostatic damage, Grounding methods

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I Electrostatic discharge A discharge of static electricity from a finger or other conductor may damage system boards or other staticsensitive devices. This type of damage may reduce the life expectancy of the device. Preventing electrostatic damage To prevent electrostatic damage, observe the following precautions: ● Avoid hand contact by transporting and storing products in static-safe containers. ● Keep electrostatic-sensitive parts in their containers until they arrive at static-free workstations. ● Place parts on a grounded surface before removing them from their containers. ● Avoid touching pins, leads, or circuitry. ● Always be properly grounded when touching a static-sensitive component or assembly. Grounding methods There are several methods for grounding. Use one or more of the following methods when handling or installing electrostatic-sensitive parts: ● Use a wrist strap connected by a ground cord to a grounded Thin Client chassis. Wrist straps are flexible straps of 1 megohm +/- 10 percent resistance in the ground cords. To provide proper grounding, wear the strap snug against the skin. ● Use heelstraps, toestraps, or bootstraps at standing workstations. Wear the straps on both feet when standing on conductive floors or dissipating floor mats. ● Use conductive field service tools. ● Use a portable field service kit with a folding static-dissipating work mat. If you do not have any of the suggested equipment for proper grounding, contact an HP authorized dealer, reseller, or service provider. NOTE: For more information about static electricity, contact an HP authorized dealer, reseller, or service provider. Preventing electrostatic damage 39

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I
Electrostatic discharge
A discharge of static electricity from a
finger
or other conductor may damage system boards or other static-
sensitive devices. This type of damage may reduce the life expectancy of the device.
Preventing electrostatic damage
To prevent electrostatic damage, observe the following precautions:
●
Avoid hand contact by transporting and storing products in static-safe containers.
●
Keep electrostatic-sensitive parts in their containers until they arrive at static-free workstations.
●
Place parts on a grounded surface before removing them from their containers.
●
Avoid touching pins, leads, or circuitry.
●
Always be properly grounded when touching a static-sensitive component or assembly.
Grounding methods
There are several methods for grounding. Use one or more of the following methods when handling or
installing electrostatic-sensitive parts:
●
Use a wrist strap connected by a ground cord to a grounded Thin Client chassis. Wrist straps are
flexible
straps of 1 megohm +/- 10 percent resistance in the ground cords. To provide proper grounding, wear
the strap snug against the skin.
●
Use heelstraps, toestraps, or bootstraps at standing workstations. Wear the straps on both feet when
standing on conductive
floors
or dissipating
floor
mats.
●
Use conductive
field
service tools.
●
Use a portable
field
service kit with a folding static-dissipating work mat.
If you do not have any of the suggested equipment for proper grounding, contact an HP authorized dealer,
reseller, or service provider.
NOTE:
For more information about static electricity, contact an HP authorized dealer, reseller, or service
provider.
Preventing electrostatic damage
39