Handling Devices That Are Sensitive To Electrostatic Discharge; Grounding Requirements - Lenovo TB3-X70F Hardware Maintenance Manual
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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.
Notes:
1. Use product‐specific ESD procedures when they exceed the
2. Make sure that the ESD protective devices you use have been certified
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
• Prevent the part from touching your clothing. Most clothing is insulative and
• Use the black side of a grounded work mat to provide a static‐free work
• Select a grounding system, such as those listed below, to provide protection
Notes:
The use of a grounding system to guard against ESD damage is desirable but
not necessary.
Grounding requirements
Electrical grounding of the computer is required for operator safety and correct
system function. Proper grounding of the electrical outlet can be verified by a
certified electrician.
requirements noted here.
(ISO 9000) as fully effective.
body.
retains a charge even when you are wearing a wrist strap.
surface. The mat is especially useful when handling ESD‐sensitive devices.
that meets the specific service requirement.
– 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.
Safety information
6
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