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Edition,

major

or

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references IBM

information

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SAFETY

CAUTION

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NOTICE

To

avoid

exchanging any CRTs

sa~ety

Do

not

Do

not

The

power attachment console standards. grounded voltage

electrical

are

under vacuum.

glasses power adjust

and meets

For your

receptacle.

on

accessible

on

shock,

FRU. and

long-sleeved

without

inside

the

turn All rear

o~

the

cable

sa~ety,

metal

plug

relevant An

improperly wired

power

persons

clothing

cover.

video

testing

the

parts

o~~

working

unit.

(when

supplied)

o~

the

laboratory,

plug must

and

disconnect

near

(or

comparable

is

be

connected

receptacle

work

station.

the

an exposed

protection).

approved country,

to a properly

could

power plug

CRT

should wear

~or

use

or

test-house

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a hazardous

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Rules

If

electrical and mechanical equipment and

observe the rules, you can

for

Safety

(1)

you know the safety rules for working with

(2)

work safely with IBM

equipment. Do

not

fear

electricity,

but

respect it.

While you are maintaining IBM equipment, (1)

observe every safety precaution possible and

(2)

observe the following safety rules.

Work

•

Environment

Do

not work alone

near equipment

in

hazardous conditions or

that

has dangerous voltages. Always inform your manager if the conditions or voltages are a possible problem.

• Always look for possible hazards

in

your work environment. Examples of hazards are: moist floors, nongrounded extension cables, power surges, and missing safety grounds.

•

Do

not perform any action

product unsafe or

that

makes the

causes hazards for the

customer personnel.

you

• Always keep your CSR tool kit away from walk areas so

that

other persons cannot trip over it.

For example, keep the kit under a desk or table.

• Observe good housekeeping practices

in

the

area

of the machines while you are performing

maintenance and after completing it.

• After maintenance, reinstall all safety devices, such as guards, shields, labels, and ground wires.

that

Exchange safety devices

are worn or defective. (Remember: the safety devices protect you from a hazard. you

do

not reinstall them when you have

You destroy their purpose if

completed the service call.)

Electrical Safety

•

If

possible, always unplug the power·supply cable

before you work on a machine. When you switch

off power off position or attach a (Z229·0237)

Note: A may be powered from another source and may be controlled breaker.

at

the wall box, lock the switch in the

DO

NOT OPERATE

tag

to the switch.

non·IBM attachment to an IBM machine

by

a different switch or circuit

,-

..

)

• Before you CSRs and customer personnel are not

start

the equipment, ensure that other

in

a

hazardous position.

•

Do

not wear loose clothing that can be trapped in

that

the moving parts of a machine. Ensure

the

sleeves of your clothing are fastened or are rolled

above the elbow.

If

your hair

is

long, or if you

wear a neck scarf, fasten it to make it safe.

• Insert your necktie into your clothing or fasten it with a clip (preferably nonconductive) approximately 8 centimeters

(3

at

inches) from its

end.

•

Lift

the equipment or parts by standing or Pl1shing action removes the strain from the muscles your back. that

• Put removed machine covers

up with your stronger leg muscles; this

Do

not lift any equipment or parts

are too heavy for you.

in

a safe place while

in

you are servicing the machine. Reinstall the covers before returning the machine to the customer.

• Switch off all power before

(1)

removing or assembling the main units of the equipment, (2)

working near power supplies,

power supplies, or

(4)

installing changes in

(3)

inspecting

machine circuits.

• Unless the maintenance documents specifically do

instruct you,

not service the following

with power on if the

part

is removed from its

parts

installed position in the machine: power supplies, pumps, blowers, motor generators, and other units with voltages V dc. (This rule ensures

that

are more than

30

V ac or

that

correct grounding is

maintained.)

•

If

you really need

to

work on equipment

that exposed live electrical circuits, observe the following precautions:

Ensure with the

that

another person who is familiar

power· off controls is near you. Another person must be there to switch off the power, if necessary.

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Do

not wear jewelry, chains, metal-frame eyeglasses, or other personal metal (Remember: if the metal touches the machine,

the flow of current increases because the

metal

is

a conductor.)

Use only insulated probe tips or extenders. (Remember: worn or cracked insulation unsafe.

Use only one hand while you are working on live equipment. Keep the other hand pocket or behind your back. (Remember: there must be a complete circuit for an electrical shock to occur. This precaution prevents your body from completing the circuit!)

When you use a tester, set its controls correctly and use insulated probes that have the correct electrical specification.

Do

not touch objects as metal floor strips, machine frames, or other conductors. obtained locally, if necessary.

• When you are working with machines having voltages more than

the special safety instructions given

engineering memorandums

• Never assume: that power has been removed from

a circuit. First, check

•

Do

not touch live electrical circuits with the surface of a plastic dental mirror. (Remember: the surface of the dental mirror is conductive and can cause damage and personal injury.)

that

are grounded, such

Use suitable rubber mats

30

V ac or

that

42.4

(CEMs).

it has been removed.

objects,

is

in

your

V dc, observe

in

customer

Mechanical Safety

Do

not touch mechanical parts when you are

(1)

lubricating a part,

(3)

doing other similar work.

Safety Glasses

Wear safety glasses when:

• Using a hammer to drive pins or similar parts

• Using a power drill

• Using a spring hook to attach or remove a spring

• Soldering parts

• Cutting wire or removing steel bands

• Using solvents, chemicals, or cleaners to clean parts

• Working in any other conditions your eyes.

Tools, Testers,

•

Do

not use tools and testers approved by IBM. Ensure tools, such as Wire-Wrapl tools and power drills, are inspected regularly.

• Exchange worn and broken tools and testers.

•

Do

not use solvents, cleaners, or oils that have not been approved

(2)

checking for play, or

and

Field-Use Materials

that

by

IBM.

that

could injure

have not been

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If

an electrical accident occurs:

1.

,Use

caution;

2.

Switch

Instruct

3.

4.

If

the mouth-to-mouth rescue "Electrical

do

off

the

another

victim is

Accidents-First Aid" (following).

not

be a victim yourself.

power.

person

not

to

get

breathing,

breathing.

medical aid .

perform

See

ITrademark of the Gardner·Denver

Co,

Safety

Notice

v

Summary

Electrical

Accidents-

First

Aid

Prevention is the main aid to electrical safety. Always think about electrical safety and use good practice, for example:

• Ensure matches the IBM equipment specifications.

• Inspect power cables and plugs; check for loose, damaged, or worn parts.

• Review the procedure in the maintenance documents before you remove a hold an electrical charge from the machine. Carefully discharge the necessary parts exactly as instructed by the procedure.

•

Do lamp) as an extension trouble light

N ever assume machine is always completely safe. You may not know the exact condition of a machine because, for example:

•

The

that

the customer's power receptacle

part

that

can

not use a normal light (for example, a table

at

a machine.

that

a machine or a circuit is safe. No

power receptacles could

be

defective.

When performing rescue procedures for an electrical accident, do as follows:

• Use Caution: the electrical· current source, remove the power; to do this, you may need to operate the room emergency disconnecting switch. switch, use a dry wooden rod or other nonconductive object to pull or push the victim away from source.

•

Work

Quickly: may need and possibly the heart is not beating.

• Call

Determine if the victim needs

. breathing.

steps.

for ambulance or the hospital. Instruct another person to call for medical aid.

If

the victim is still

power· off

contact with the electrical·current

(1)

mouth·to·mouth rescue breathing

(2) external cardiac compression if

the

Rescue Service: such as the

If

he/she does, perform the following

(EPO)

If

you cannot find the

If

the victim is unconscious, he/she

mouth·to·mouth rescue

in

contact with

switch or the

c

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• Safety devices or features could be missing or defective.

• The maintenance and/or wrong or not complete.

•

The

design could have a problem.

• The machine could have damage, caused when it was shipped.

• The machine could have an unsafe change or attachment.

• An engineering change or a sales change could be wrongly installed.

• The machine could be deteriorated

(2)

is old or environment.

• A

part

hazard.

• A

part

because it operates

could be defective, therefore causing a

could be wrongly assembled.

EC

changes

could

be

(1)

because it

in

an extreme

CAUTION Use extreme breathing toxic fumes. has breathed-out.

1.

Prepare for rescue breathing: a. Ensure

b.

c.

care

when you perform rescue

for

a victim who may have breathed-in

Do

not

breathe-in

that

the victim's airway is open and

that

it is not obstructed; check the mouth for objects such as chewing gum, food, dentures, or the tongue.

Place the victim on his/her back, put one hand behind the victim's neck, and other hand on his/her forehead.

Lift the neck with one hand, and tilt the head backward by pressing on the forehead with the other hand

that

may be obstructing the airway,

0 .

air

that

the

victim

put the

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These are some of the ways machine could affect safety. Before you service call caution.

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Look, listen, and feel to determine if the victim breathing freely:

a. Put your cheek near the victim's mouth and

nose.

b.

Listen and feel for the breathing-out of air. At

the same time, and upper abdomen to see if they move up and down.

If

the victim is not breathing correctly:

a. Keep the victim's head tilted backward (see

D).

Continue to press on the forehead with your hand; hand so victim's nostrils with your thumb and finger

at

that

look"

at

the victim's chest

the same time, rotate this same

you can pinch together the

B

II

is

c.

Remove your mouth to let the victim breath-out, and check moves down

D

that

the victim's chest

II

d.

Repeat steps either until the victim breathes for himself/ herself or until medical aid comes.

Reporting Accidents

Report, to your field manager, all electrical accidents, possible electrical hazards, and accidents that nearly occurred. might reporting ensures that the problem will quickly.)

(Remember: an accident

be caused

band

c once every 5 seconds

that

nearly occurs

by

a design problem; your immediate

be solved

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b.

Open your mouth wide and breath. Make a tight seal with your mouth around the victim's mouth the victim's mouth .

take

a deep

IJ and blow into

•

Report also all small electrical shocks. condition slightly to cause serious injury.)

that

causes a small shock need only differ

(Remember: a

Safety

Notice

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PREFACE

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CONTENTS

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Chapter

1.1

1.2

1.4

1.6

1.7

1.8

1.9

1.3

1.4.1

1.4.2

1.5

Video Keyboard Logic Indicators,

Operator Offline Data 122-key 124-Key

Chapter

2.1

2.2

2.3

Console Symptom

2.2.1

2.2.2

2.2.3

2.2.4

2.2.5

2.2.6

2.2.7

2.2.8

2.2.9 Offline

2.3.1

Chapter

3.1

3.2

3.3

Keyboard Logic

3.2.1

3.2.2

3.2.3 Video

1.

Introduction

Unit Unit

Indicators Switches

Flow

2.

Problem Determination Guide

Operator Power-On Display Keyboard

Audible Monocase/Dualcase Color Pedestal Security

Offline

3.

Removal

Unit Logic Logic

Security

Unit

1-1

Unit

1-1 Switches,

and

Messages

Tests

1-7 Keyboard Keyboard

Quick Index

Tests

Check

Messages Light

Problem

Alarm

Switch

or Key

Test

Unit

3-2 Unit Board

Keylock

3-6

1-!

1-6

2-4

2-29

and Replacement Procedures

3-1 Cover

1-1

1-4

Power

Assembly

and

Controls

(LINE

(Keyboard-To-Display (Keyboard-To-Display

or

Problem Problem Problem Procedure

25)

2-2

2-6

Status

2-11

2-21 Switch Cord

3-2

Assembly

Controls

1-4

1-5

Light

2-24

Problem

2-27

Problem

2-28

2-31

3-4

3-5

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2-1

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Chapter Chapter

5.1

5.2

5.3

5.4

5.5

5.6

5.7

5.8

Preparation General General Video

Low

High Keyboard Keyboard

APpendix

A.! A.2 A.3 A.4 A.5 A.6 A.7 A.S A.9

Set Attach Attach Connect Attach Set Adjust Check Personalize

Appendix

B.l

Video

B.2

Keyboard

B.3 B.4

Logic Three

4.

3205

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IBM

Unit

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A.

Switches

Pedestal Pedestal

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FIGURES

1-1. 1-2. 1-3. 1-4. 1-5.

1-6. 1-7. 2-1.

2-2.

2-3.

2-4.

2-5.

2-6.

2-7.

2-8.

2-9.

2-10. 2-11. 2-12. 2-13. 2-14. 2-15. 2-16.

2-17

.

2-18. 2-19. 2-20. 2-21. 2-22. 2-23. 2-24.

2-25.

2-26. 2-27. 2-28. 2-29. 2-30. 2-31. 2-32. 2-33. 2-34.

2-35.

2-36. 2-37. 2-38. 2-39. 2-40. 2-41. 2-42. 2-43. 2-44.

2-45.

3-1.

3-2.

3-3.

4-1.

4-2.

5-1.

5-2.

5-3.

5-4.

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A-2.

A-3.

A-4.

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Console

IBM

Setup Offline

IBM Keyboard-to-display Keyboard-to-display Keyboard Keyboard Video Pin Display

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Double Different Setup Audible No Video Audible Monocase/Dualcase Color Pedestal Power Cord Security Offline Switches All-character All-character 7-color

4-color

2-color

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Logic

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IBM

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Units,

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IBM 3205 Maintenance Information

Specifications and Main Features

Frequently Asked Questions

User Manual