IBM 9332 User manual

-

SY31-9026-0

·de

Service

Gui

-;-

-

-:-.,.-;;

9332 Disk Unit

..:.=="=

Models

2001400

Federal

Communications

Commission

(FCC)

Statement

Warning:

This

equipment

generates,

uses,

and

can

radiate

radio

frequency

energy

and

if

not

installed

and

used

in

accordance

with

the

instruction

manual,

may

cause

interference

to

radio

communications.

It

has

been

tested

and

found

to

comply

with

the

limits

for

a

Class

A

computing

device

pursuant

to

Subpart

J

of

Part

15

of

FCC

Rules,

which

are

designed

to

provide

reasonable

protection

against

such

interference

when

operated

in

a

commercial

environment.

Operation

of

this

equipment

in

a

residential

area

is

likely

to

cause

interference

in

which

case

the

user

at

his

own

expense

will

be

required

to

take

whatever

measures

may

be

required

to

correct

the

interference.

First

Edition

(June

1986)

The

drawings

and

specifications

contained

herein

shall

not

be

reproduced

in

whole

or

in

part

without

written

permission.

IBM

has

prepared

this

manual

for use

by

service

representatives

in

the

maintenance

or

repair

of

the

specific

machines

indicated.

IBM

makes

no

representations

that

it

is

suitable

for

any

other

purpose.

Information

contained

in

this

manual

is

subject

to

change

from

time

to

time.

Any

such

change

will be

reported

in

subsequent

revisions

or

Technical

Newsletters.

References

in

this

publication

to

IBM

products,

programs,

or

services

do

not

imply

that

IBM

intends

to

make

these

available

in

all

countries

in

which

IBM

operates.

The

numbers

at

the

bottom

right

of

illustrations

are

publishing

control

numbers

and

are

not

part

of

the

technical

content

of

this

manual.

Publications

are

not

stocked

at

the

address

given

below.

Requests

for

IBM

publications

should

be

made

to

your

IBM

representative

or

to

your

IBM-approved

remarketer.

This

publication

could

contain

technical

inaccuracies

or

typographical

errors.

A form for

readers'

comments

is

provided

at

the

back

of

this

publication.

If

the

form

has

been

removed,

comments

may

be

addressed

to

IBM

Corporation,

Information

Development,

Department

245,

Rochester,

Minnesota,

U.S.A.

55901.

IBM

may

use

or

distribute

whatever

information

you

supply

in

any

way

it

believes

appropriate

without

incurring

any

obligation

to

you.

©

Copyright

International

Business

Machines

Corporation

1986

-

SY31-9026-0

"de

Service

Gui

7 - -

=---;

9332

Disk Unit

..:.:::::::::"'=

Models

2001400

Federal

Communications

Commission

(FCC)

Statement

Warning:

This

equipment

generates,

uses,

and

can

radiate

radio

frequency

energy

and

if

not

installed

and

used

in

accordance

with

the

instruction

manual,

may

cause

interference

to

radio

communications.

It

has

been

tested

and

found

to

comply

with

the

limits

for

a

Class

A

computing

device

pursuant

to

Subpart

J

of

Part

15

of

FCC

Rules,

which

are

designed

to

provide

reasonable

protection

against

such

interference

when

operated

in

a

commercial

environment.

Operation

of

this

equipment

in

a

residential

area

is

likely

to

cause

interference

in

which

case

the

user

at

his

own

expense

will

be

required

to

take

whatever

measures

may

be

required

to

correct

the

interference.

First

Edition

(June

1986)

The

drawings

and

specifications

contained

herein

shall

not

be

reproduced

in

whole

or

in

part

without

written

permission.

IBM

has

prepared

this

manual

for

use

by

service

representatives

in

the

maintenance

or

repair

of

the

specific

machines

indicated.

IBM

makes

no

representations

that

it

is

suitable

for

any

other

purpose.

Information

contained

in

this

manual

is

subject

to

change

from

time

to

time.

Any

such

change

will be

reported

in

subsequent

revisions

or

Technical

Newsletters.

References

in

this

publication

to

IBM

products,

programs,

or

services

do

not

imply

that

IBM

intends

to

make

these

available

in

all

countries

in

which

IBM

operates.

The

numbers

at

the

bottom

right

of

illustrations

are

publishing

control

numbers

and

are

not

part

of

the

technical

content

of

this

manual.

Publications

are

not

stocked

at

the

address

given below.

Requests

for

IBM

publications

should

be

made

to

your

IBM

representative

or

to

your

IBM-approved

remarketer.

This

publication

could

contain

technical

inaccuracies

or

typographical

errors.

A form for

readers'

comments

is

provided

at

the

back

of

this

publication.

If

the

form

has

been

removed,

comments

may

be

addressed

to

IBM

Corporation,

Information

Development,

Department

245,

Rochester,

Minnesota,

U.S.A.

55901.

IBM

may

use

or

distribute

whatever

information

you

supply

in

any

way

it

believes

appropriate

without

incurring

any

obligation

to

you.

©

Copyright

International

Business

Machines

Corporation

1986

Who

should

use

this

manual

...

This

manual

is

for

service

representatives

who

service

or

repair

the

IBM

9332

Disk

Unit.

This

manual

uses

a

specific

range

of

words

so

that

the

text

can

be

understood

by

service

representatives

in

countries

where

English

is

not

the

normal

language.

How

this

manual

is

arranged

This

manual

contains:

• A

safety

section

with

rules

for

safety

and

lists

of

safety

notices

• A

table

of

contents

showing

all

the

procedures

in

this

manual

and

the

page

on

which

each

procedure

starts

•

Five

chapters

with:

Information

to

locate

field-replaceable

units

(FRUs)

and

to

locate

the

9332 model

number

and

serial

number

Procedures

to

remove

and/or

install

any

FRU

and

how

to

verify

a

good

fix

Procedures

to

inspect

the

9332 for

safety

conditions

that

can

be

of

danger

to

the

service

representative

Information

to

order

parts

for

the

9332

A

service

log

to

record

each

service

event

•

An

appendix

of

wiring

diagrams

• A

glossary

of

terms

and

abbreviations

used

in

this

manual

•

An

index

of

part

numbers

• An

index

of

key

words

to

procedures

in

this

manual

iii

If

you

need

more

information

...

IV

See

the

following

9332

manuals

for

more

information:

• Installing, SA21-9804,

which

contains

procedures

to

install

or

remove

the

9332

and

prepare

the

9332

for

operation.

•

Analyzing

Problems, SA21-9837,

which

contains

procedures

to

analyze

9332

problems.

• Reference Code Guide, SA21-9836,

which

contains

descriptions

of

the

9332

reference

codes

and

is

used

to

identify

field-replaceable

units.

This

product

meets

IBM

safety

standards.

The

following

information

has

been

included

in

this

publication

for

the

use

and

safety

of

IBM

personnel.

For

more

informatio11,

see:

• Electrical Safety for

IBM

Service

Representatives, 8229-8124

•

Safety/Health

Guidelines

for

IBM

Service Representatives, 8241-5493

General

Safety

during

Work

Use

these

rules

to

ensure

general

safety:

•

Observe

good

housekeeping

in

the

area

of

the

machines

during

maintenance

and

after

completing

it.

•

Use

only

field-supply

items

(such

as

adhesives,

cleaning

fluids,

lubricants,

paints,

and

solvents)

that

have

been

approved

by

IBM,

that

is,

are

supplied

under

an

IBM

part

number.

•

When

lifting

any

heavy

object:

1.

Ensure

that

you

can

stand

safely

without

slipping.

2.

Balance

the

weight

of

the

object

between

your

two

feet.

:J.

Use

a

slow

lifting

force.

Never

move

suddenly

or

twist

when

you

attempt

to

lift.

4.

Lift

by

standing

or

by

pushing

up

with

your

leg

muscles;

this

action

removes

the

strain

from

the

muscles

in

your

back.

Do

not

attempt

to lift

any

objects

that

you

thinh

are too heavy for you.

• Do

not

perform

any

action

that

causes

hazards

to

the

customer

or

that

makes

the

equipment

unsafe.

•

Put

removed

covers

and

other

parts

in

a

safe

place,

away

from

all

personnel,

while

you

are

servicing

the

machine.

e

Always

keep

your

tool

case

away

from

walk

areas

so

that

other

persons

will

not

trip

over

it;

for

example,

put

it

under

a

desk

or

table.

• Do

not

wear

loose

clothing

that

can

be

trapped

in

the

moving

parts

of

a

machine.

Ensure

that

your

sleeves

are

fastened

or

are

rolled

up

above

the

elbows.

If

your

hair

is

long,

fasten

it.

• Do

not

wear

jewelry,

chains,

metal-frame

eyeglasses,

or

metal

fasteners

for

your

clothing.

Remember: A

metal

object

lets

more

current

flow

if

you

touch

a

live

conductor.

•

Insert

the

ends

of

your

necktie

or

scarf

inside

other

clothing

or

fasten

the

necktie

with

a

clip,

preferably

nonconductive,

approximately

8

centimeters

(3

inches)

from

the

ends.

•

Wear

safety

glasses

when

you

are:

Using

a

hammer

to

drive

pins

or

similar

parts

Drilling

with

a

power

hand-drill

Using

spring

hooks

or

attaching

sprmgs

Soldering

parts

Cutting

wire

or

removing

steel

bands

v

General

Safety

during

Work

(Continued)

Cleaning

parts

with

solvents,

chemicals,

or

cleaning

fluids

Working

in

any

other

conditions

that

might

be

hazardous

to

your

eyes.

•

Before

you

start

the

machine,

ensure

that

other

service

representatives

and

the

customer's

personnel

are

not

in

a

hazardous

position.

•

After

maintenance,

reinstall

all

safety

devices

such

as

shields,

guards,

labels,

and

ground

wires.

Exchange

any

safety

device

that

is

worn

or

defective

for a

new

one.

Remember:

Safety

devices

protect

personnel

from

hazards.

You

destroy

the

purpose

of

the

devices

if

you

do

not

reinstall

them

before

completing

your

service

call.

•

Reinstall

all

covers

correctly

before

returning

the

machine

to

the

customer.

Safety

with

Electricity

Observe

these

additional

rules

when

working

on

equipment

powered

by

electricity:

•

Find

the

room

emergency

power-off

(EPO)

switch

or

disconnecting

switch.

If

an

electrical

accident

occurs,

you

can

then

operate

the

switch

quickly.

•

Do

not

work

alone

under

hazardous

conditions

or

near

equipment

that

has

hazardous

voltages.

Always

inform

your

manager

of

any

possible

problem

or

if

you

must

work

alone.

•

Disconnect

all

power:

VI

Before

removing

or

installing

main

units

Before

working

near

power

supplies

Before

doing

a

mechanical

inspection

of

power

supplies

Before

installing

changes

in

machine

circuits.

•

Before

you

start

to

work

on

the

machine,

unplug

the

machine's

power

cable.

If

you

cannot

unplug

the

cable

easily,

ask

the

customer

to

switch

off

the

wall

box

switch

that

supplies

power

to

the

machine,

and

either:

Lock

the

wall

box

switch

in

the

off

position,

or

Attach

a

DO

NOT

OPERATE

tag,

Z229-0237,

to

the

wall

box

switch.

Note: A

non-IBM

attachment

to

an

IBM

machine can

be

powered

possibly

from

another

source

and

controlled by a different

disconnecting

switch

or circuit

breaker.

If

you determine

that

this

condition is present, ensure

that

you remove (eliminate)

this

hazard

before you start work.

•

If

you

need

to

work

on

a

machine

that

has

exposed

electrical

circuits,

observe

the

following

precautions:

Ensure

that

another

person,

who

is

familiar

with

the

power-off

controls,

is

near

you.

Remember:

Another

person

must

be

there

to

switch

off

the

power,

if

necessary.

CAUTION

Some

IBM

hand

tools

have

handles

covered

with

a

soft

material

that

does

not

insulate

you

when

working

with

live

electrical

circuits.

Use

only

those

tools

and

testers

that

are

suitable

for

the

job

you

are

doing.

Use

only

one

hand

when

working

with

powered-on

electrical

equipment;

keep

the

other

hand

in

your

pocket

or

behind

your

back.

Remember:

There

must

be

a

complete

circuit

to

cause

electrical

shock.

By

observing

the

above

rule,

you

may

prevent

a

current

from

passing

through

the

vital

parts

of

your

body.

When

using

testers,

set

the

controls

correctly

and

use

the

IBM-approved

probe

leads

and

accessories

intended

for

that

tester.

mat

to

protect

yourself

from

electric

shock.

Stand

on

suitable

rubber

mats

(obtained

locally,

if

necessary)

to

insulate

you

from

grounds

such

as

metal

floor

strips

and

machine

frames.

•

Observe

the

special

safety

precautions

when

you

work

with

very

high

voltages;

these

instructions

are

given

in

IBM

safety

service

memorandums

(SMs)

and

the

safety

sections

of

maintenance

information.

Use

extreme

care

when

measuring

high

voltages.

•

Do

not

use

tools

or

testers

that

have

not

been

approved

by

IBM.

Ensure

that

electrical

hand

tools,

such

as

power

drills

and

Wire-Wrap'

tools,

are

inspected

regularly.

•

Do

not

use

worn

or

broken

tools

and

CAUTION

testers.

Many

customers

have,

near

their

equipment,

rubber

floor

mats

that

contain

small

conductive

fibers

to

decrease

electrostatic

discharges.

Do

not

use

this

wrong

type

of

Trademark

of

the

G11rdner-Denver Co.

• Never

assume

that

power

has

been

disconnected

from

a

circuit.

First,

check

that

it

has

been

switched

off.

vii

Safety

with

Electricity

(Continued)

•

Always

look

carefully

for

possible

hazards

in

your

work

area.

Examples

of

these

hazards

are:

moist

floors,

nongrounded

power

extension

cables,

power

surges,

and

missing

safety

grounds.

•

Do

not

touch

live

electrical

circuits

with

the

glass

surface

of

a

plastic

dental

mirror.

The

surface

is

conductive;

such

touching

can

cause

personal

injury

and

machine

damage.

•

Unless

the

maintenance

information

specifically

lets

you,

do

not

service

the

following

parts

with

power

on

them

when

they

are

removed

from

their

normal

operating

places

in

a

machine:

Power

supply

units

Pumps

Blowers

and

fans

Motor

generators

and

similar

units.

(This

rule

ensures

correct

grounding

of

the

units.)

•

If

an

electrical

accident

occurs:

Use

caution;

do

not

become

a

victim

yourself.

Switch

off

power.

Send

another

person

to

get

medical

aid.

If

the

victim

is

not

breathing,

decide

whether

to

give

rescue

breathing.

These

actions

are

described

below.

viii

IBM 9332 User manual

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