Lenovo X200 Bedienungsanleitung PDF herunterladen (Seite 14)

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.

When handling ESD-sensitive parts:

v Keep the parts in protective packages until they are inserted into the product.

v Avoid contact with other people.

v Wear a grounded wrist strap against your skin to eliminate static on your body.

v Prevent the part from touching your clothing. Most clothing is insulative and

retains a charge even when you are wearing a wrist strap.

v Use a grounded work mat to provide a static-free work surface. The mat is

especially useful when handling ESD-sensitive devices.

v Select a grounding system, such as those listed below, to provide protection 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.

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.

Notes:

1. Use product-specific ESD procedures when they exceed the requirements

noted here.

2. Make sure that the ESD protective devices you use have been certified (ISO

9000) as fully effective.

Note:

The use of a grounding system to guard against ESD damage is desirable but not

necessary.

6 ThinkPad X200 Tablet and X201 Tablet Hardware Maintenance Manual

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Lenovo X200 Bedienungsanleitung Seite 14