beautypg.com

Grounding requirements, Handling, Devices – Lenovo 3000 N200 Notebook User Manual

Page 20: That, Sensitive, Electrostatic, Discharge, Grounding, Requirements

background image

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

requirements

noted

here.

2.

Make

sure

that

the

ESD

protective

devices

you

use

have

been

certified

(ISO

9000)

as

fully

effective.

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

the

black

side

of

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.

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

verified

by

a

certified

electrician.

Safety

information

14

MT

0687