Handling devices that are sensitive to electrostatic discharge
Any computer part containing transistors or integrated circuits (ICs) should be considered sensitive to
electrostatic discharge (ESD.) ESD damage can occur when there is a difference in charge between objects.
Protect against ESD damage by equalizing the charge so that the machine, the part, the work mat, and the
person handling the part are all at the same charge.
1. Use product-speciic ESD procedures when they exceed the requirements noted here.
2. Make sure that the ESD protective devices you use have been certiied (ISO 9000) as fully effective.
When handling ESD-sensitive parts:
Keep the parts in protective packages until they are inserted into the product.
Avoid contact with other people.
Wear a grounded wrist strap against your skin to eliminate static on your body.
Prevent the part from touching your clothing. Most clothing is insulative and retains a charge even when
you are wearing a wrist strap.
Use a grounded work mat to provide a static-free work surface. The mat is especially useful when
handling ESD-sensitive devices.
Select a grounding system, such as those listed below, to provide protection that meets the speciic
service requirement.
Note: The use of a grounding system to guard against ESD damage is desirable but not necessary.
Attach the ESD ground clip to any frame ground, ground braid, or green-wire ground.
When working on a double-insulated or battery-operated system, use an ESD common ground or
reference point. You can use coax or connector-outside shells on these systems.
Use the round ground prong of the ac plug on ac-operated computers.
Grounding requirements
Electrical grounding of the computer is required for operator safety and correct system function. Proper
grounding of the electrical outlet can be veriied by a certiied electrician.
Chapter 1.Safety information 5
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