IBM 380Z manual Important Notice, But

FRU

Removals

and

Replacements

This section contains information about removals and

replacements.

Do not damage any part. Only certified and trained

personnel

should

service

the

computer.

The arrows in the “Removals and Replacements”

section

show the

direction

of

movement

to

remove

a

FRU,

or

to turn a screw to release the FRU. The

arrows are marked in numeric order, in square

callouts,

to

show

the correct sequence of removal.

When

other

FRUs

must be removed before the failing

FRU

is

removed,

they

are

listed

at

the

top

of

the

page.

To

replace

a

FRU,

reverse

the

removal

procedure

and

follow

any

notes

that

pertain

to

replacement.

See “Locations” for internal cable connections and

arrangement

information.

When

replacing

a

FRU,

use

the

correct

screw

size as

shown

in

the

procedures.

CAUTION:

Before

removing any

FRU,

turn

off

the

computer,

unplug

all

power

cords

from

the

electrical

outlets,

remove the battery pack, and

then

disconnect

any

interconnecting

cables.

CAUTION:

The

battery

pack

contains

small amounts

of

nickel.

Do

not

disassemble

it,

throw

it

into

fire

or

water,

or

short-circuit

it.

Dispose

of

the

battery

pack as

required by local ordinances or regulations.

Attention: Before the computer is powered on after FRU

replacement,

make

sure

all screws, springs, or other small

parts are in place and are not left loose inside the

computer. Verify this by shaking the computer and

listening

for

rattling

sounds. Metallic parts or metal flakes

can

cause

electrical

short

circuits.

Attention: The system board is sensitive to, and can be damaged by, electrostatic discharge. Establish personal grounding by touching a ground point with one hand before touching these units.

You must use an electrostatic discharge (ESD) strap (P/N 6405959) to establish personal grounding.

Important Notice

This machine uses special nylon-coated screws with the following characteristics:

They maintain tight connection.

They do not easily come loose, even with shock or vibration.

But:

They need additional force to tighten.

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