IBM 29 CARD PUNCH - Manuale utente

Card

Punch

sve

Field

Engineering

Maintenance

Manual

$225-3357-3

Ina

Field

Engineering

Maintenance

Manual

Card

Punch

$225-3357-3

Preface

This

publication

provides

information

for

the

maintenance

the

IBM

Card

Punch.

The

manual

written

with

presupposition

that

the

reader

has

working

knowledge

the

machine.

much

applicable

information

possible

each

section

this

manual.

The

sections

are

numbered

for

easy

reference.

The

sections

are

presented

sequence

similar

the

card

path

through

the

machine.

Timing

adjustments

for

some

units

may

vary

among

machines

due

features

and

engineering

changes;

refer

the

individual

machine

wiring

diagram

for

accurate

timing.

Special

features

are

treated

individually

separate

manual,

Field

Engineering

Theory

—

Maintenance,

JBM

Card

Punch

Features,

[BM

Interpreting

Card

Punch,

Model

Form

223-2926.

Other

manuals

are:

Field

Engineering

Theory

Operation,

JBM

Card

Punch,

Form

225-3358

Illustrated

Parts

Catalog,

JBM

Card

Punch,

Form

124-0085

Reference

Manual,

JBM

Card

Punch,

Form

A24-3332

Fourth

Edition

(April

1969)

This

major

revision

of,

and

obsoletes,

Form

225-335

7-2,

Supplement

Form

$23-4035,

and

all

earlier

editions.

Significant

changes

have

been

made

throughout

this

manual,

including:

new

diagnostic

flowcharts,

Chapter

new

chapter,

Chapter

new

lubricant

specifications,

Chapter

revised

starwheel

adjustments

and

revised

suppress

adjustments,

Chapter

This

manual

should

reviewed

its

entirety.

Changes

are

periodically

made

the

specifications

herein;

any

such

changes

will

reported

subsequent

revisions

Supplements.

This

manual

has

been

prepared

the

IBM

Systems

Development

Division,

Product

Publications,

Dept

B96,

Box

390,

Poughkeepsie,

N.Y.

12602.

form

for

readers’

comments

provided

the

back

this

publication.

the

form

has

been

removed,

comments

may

sent

the

above

address.

©Copyright

International

Business

Machines

Corporation

1965,

1969

Chapter

Reference

Data

and

Service

Aids

Section

Reference

Data.

1.1

Operations

1.2

Sequence

Operations

1.2.1

Functions

Section

Diagnostic

Techniques

1.3

Initial

Approach

1.4

Diagnostic

Flowcharts

1.4.1

Start

and

Run

Failures

1.4.2

Card

Transport

Failures

1.4.3

Interposer

Selection

Failures

1.4.4

Escapement

Failures

1.4.5

Punch

Drive

Cycle

Failures

1.4.6

Printing

Control

Failures

1.5

Machine

Service

Features

1.5.1

Motor

Switch

1.5.2

Test

Probe

1.6

Servicing

Techniques

1.6.1

Forcing

1.6.2

Interrupting

Machine

Operation

1.6.3

Jum

pering

1.6.4

Measuring

1.6.5

Cycling

Manually

1.6.6

Interchanging

Units

1.7

Difficult-to-Analyze

and

Intermittent

ailures

1.7.1

Left-Zero

Feature

1.7.2

Diagnosis

““Heavy”’

Stiff

Keyboards

1.7.3

Stacker

;

1.7.4

Starwheel

Adjustment

Chapter

Console

and

Maintenance

Facilities

Section

Basic

Unit

2.1

Installation

Procedures

2.1.1

Shipping

Material

2.1.2

Power

2.1.3

Keyboard

Operations

2.1.4

Program

and

Function

(Model

A).

2.1.5

Program

and

Function

(Model

2.1.6

Final

Checkout

Section

Features.

2.2

Installation

Procedures

2.2.1

Feature

Checkout

2.2.2

Final

Checkout

Chapter

Preventive

Maintenance

Section

Basic

Unit

3.1

Cleaning

3.2

Adjustment

3.3

Safety

3.3.1

Safety

Devices

3.3.2

Electrical

Hazards

3.3.3

Chemical

Hazards

3.4

Lubrication

Section

Features

Chapter

Checks,

Adjustments,

and

Removals

Section

Basic

Unit

4.1

Base

4.1.1

Diodes

1-7

1-8

1-10

1-11

j-11

1-12

2-1

2-2

2-3

3-1

3-8

4-1

4-]

4.1.2

4.2

4.2.1

4.2.2

4.2.3

4.2.4

4.3

4.3.1

4.3.2

4.4

4.4.1

4.4.2

4.5

4.5.1

4.5.2

4.5.3

4.5.4

4.5.5

4.5.6

4.5.7

4.5.8

4.5.9

4.5.10

4.5.11

4.5.12

4.5.13

4.5.14

4.5.15

4.6

4.6.1

4.6.2

4.6.3

4.6.4

4.6.5

4.6.6

4.6.7

4.6.8

4.6.9

4.6.10

4.6.11

4.6.12

4.6.13

4.6.14

4.6.15

4.6.16

4.6.17

4.6.18

4.6.19

4.7

4.7.1

4.7.2

4.7.3

4.7.4

4.8

4.8.1

4.9

4.9.1

Contents

Arc

Suppressors

Drive

Motor

Drive

Motor

Belt

Adjustments

Backspace

Mechanism

Service

Check

Backspace

Mechanism

Adjustment

Friction

Drive

Friction

Drive

Service

Check

Friction

Drive

Torque

Adjustment

Escapement

Unit

Escapement

Unit

Service

Check

Escapement

Unit

Adjustments.

Card

Feed

Hopper

Adjustments

Feed

Clutch

Adjustment

Card

Feed

Latch

Magnet

Adjustments

Hopper-to-Prepunch

Bed

Service

Checks

Pressure

Rail

Adjustments

Card

Guide

Adjustments

Card

Registration

Service

Check

Pusher

Arm

Adjustment

Card

Stop

Cam

Adjustment

Pressure

Roll

Service

Check

Pressure

Roll

Adjustments

Registration

Adjustments

Feed

Wheel

Removal

and

Replacement

Card

Feed

Circuit

Breaker

Service

Check

Card

Feed

Circuit

Breaker

Adjustment

Punch

Drive

. .

Index

Pointer

Adjustment

Interposer

Magnet

Adjustment

Guide

Comb

and

Bumper

Adjustment

Punch

Interposer

Magnet

Assembly

Adjustment

Interposer

Bail

Contact

Assembly

Adjustment

Punch

Drive

Removal

and

Replacement

Clutch

Magnet

Adjustment.

Punch

Clutch

Service

Check

Punch

Clutch

Adjustments

High-Speed

Assembly

Service

Check

High-Speed

Assembly

Adjustment

High-Speed

Cam

Removal

Die

and

Stripper

Service

Check

Die

and

Stripper

Adjustment

Die

and

Stripper

Removal

and

Replacement

(With

Feature)

Die

and

Stripper

Removal

and

Replacement

(Without

Feature)

Punch

Penetration

Adjustments

Punch

Removal

and

Replacement

Bail

Drive

Link

Adjustment

Pin-Sense

Unit

Pin-Sensing

Unit

Service

Checks

Pin-Sensing

Unit

Adjustments

Pin-Sensing

Unit

Removal

and

Replacement

Sensing

Removal

Eject

Unit

Eject

Unit

Adjustments.

Stacker

Unit

Stacker

Unit

Adjustments

4-1

4-2

4-4

4-5

4-6

4-7

4-8

4-9

4-10

4-11

4-12

4-13

4-14

4-15

4-16

4-17

4-18

lit

4.10

Program

Drum

Unit

4.10.1

Sensing

Assembly

Service

Check

4.10.2

Sensing

Assembly

Adjustments

4.10.3

Sensing

Assembly

Removal

and

Replacement

4.10.4

Program

Cam

Contacts

Service

Check

4.10.5

Program

Cam

Contacts

Adjustment

4.10.6

Program

Drum

Interlock

Arm

(Split

Hub)

Adjustment

4.11

Unit

4.11.1

Assembly

Service

Checks.

4.11.2

Assembly

Adjustments

4.11.3

Assembly

Removal

and

Replacement

4.11.4

Ribbon

Feed

Pawl

Adjustment

4.11.5

Drive

Adjustment

4.11.6

Suppress

Magnet

Adjustment

4.12

Keyboard

4.12.1

Contact

Adjustments

4.12.2

Hook

Support

Bar

Adjustment

4.12.3

Permutation

Bar

Adjustment

4.12.4

Restoring

Magnet

Adjustment

Illustrations

Figure

Title

Chapter

Reference

Data

and

Service

Aids

1-1

Characteristics

1-2

Operations

1-3.

Sequence

Operations

1-4

Diagnostic

Flowchart

Symbols

1-5

Start

and

Run

Failures

1-6

Card

Transport

Failures

1-7

Interposer

Selection

Failures

1-8

Escapement

Failures

(Part

2).

1-8

|Escapement

Failures

(Part

2).

1-9

Punch

Drive

Cycle

Failures

1-10

Control

Failures

1-11

Test

Probe

1-12

Reed

Relay

Insertion

Chapter

Console

and

Maintenance

Facilities

2-1

Program

Card

Model

2-2

Program

Card

—

Model

Chapter

Preventive

Maintenance

3-1

Preventive

Maintenance

Routines

3-2.

~=Lubrication

—

Right

Front

3-3.

~Lubrication

—

Front

3-4

Lubrication

—

Front

(Machine

Bed

Tilted)

3-5

Lubrication

—

Rear

3-6

Punch

Unit

Lubrication

3-7

Keyboard

Lubrication

Chapter

Checks,

Adjustments,

and

Removals

4-1

Friction

Drive

Adjustment

4-2

Escapement

Adjustment

(Part

4-2.

Escapement

Adjustment

(Part

4-3.

Hopper

Adjustment.

4-20

4-22

4-29

4-33

4-36

4-37

4-38

Page

1-1

1-2

1-3

1-4

1-5

1-6

1-7

1-8

1-9

1-10

2-2

3-3

3-4

3-5

3-6

3-7

3-8

4-1

4-2

4-4

4.12.5

Upper

Permutation

Support

Adjustment

4.12.6

Key

Unit

Adjustment

4.12.7

Key

Unit

Removals

Section

Features.

Chapter

Power

Supplies

Section

Basic

Unit

Section

Features.

Chapter

Locations

6.1

Keystem

Numbering

6.2

Reed-Relay

Card

6.2.1

Reed

Relays

6.3

Wire-Contact

Relays

6.4

Standard

Modular

System

(SMS)

6.4.1

SMS

Card

Receptacles

. .

6.4.2

SMS

Locations

and

Numbering

6.5

Location

Figures

Index

Figure

Title

4-4

Clutch

Magnet

Adjustment

4-5

Clutch

Adjustment

4-6

Latch

Magnet

Adjustment

4-7

Pressure

Rail

Adjustment

4-8

Pressure Rail

—

Card-Lever

Contact

4-9

Card

Guide

—

Detail

Station

4-10

Card

Guide

—

Master

Station

4-11

Detail

Card

Registration

4-12

Pressure

Roll

Adjustment

. .

4-13

Master

Station

Registration

Adjustment

4-14

Armature

Pivot

Adjustment

4-15

Armature

Pivot

Adjustment

—

Side

View

4-16

Armature

Adjustment

4-17

Interposer

Unlatching

Clearance

4-18

Interposer

Relatching

Adjustment

4-19

Armature

Unlatching

Clearance

4-20

Interposer

Bail

Contact

Adjustment

4-21

Interposer

Bail

Contact

Rise

Adjustment

4-22

Drive

Unit

Cam

Timing

4-23

Punch

Clutch

Magnet

4-24

Punch

Clutch

Components

4-25

Punch

Clutch

Adjustment

4-26

High-Speed

Circuit

Breaker

4-27

Punch

Bed

—

Front

View

4-28

Punch

and

Extension

4-29

Punch

Penetration

Adjustment

4-30

Sensing

Contact

Adjustment

4-31

Sensing

Adjustment

4-32

Stacker

Timing

4-33

Stacker

Adjustment

4-34

Traveling

Card

Guide

4-35

Timing

Tool

4-36

Program

Unit

Timing

Chart

4-39

4-40

4-41

5-1

d-1

6-1

6-2

6-3

6-5

Page

4-5

4-6

4-7

4-8

4-9

4-10

4-11

4-12

4-13

4-14

4-15

4-16

4-17

4-18

4-19.

4-19

4-20

4-21

Figure

4-37

Title

Method

Holding

Escapement

Wheel

4-38

Program

Cam

Contact

Adjustment

4-39

Overlay

for

Figure

4-40.

4-40

Code

Plate

Chart

E‘L’

4-41

Interposer

Assembly

4-42

Punch

Drive

and

Yoke

Adjustments

4-43

Printing

Adjustment

4-44

Interposer

Assembly

4-45

Vertical

Drive

Rod

Assembly

4-46

Character

Patterns

E‘L’.

4-47 Character

Patterns

E‘A’.

4-48

Test

Patterns.

4-49

Drive

Unit

4-50

Head

Removal.

4-51

Wire

Replacement

4-52

Suppression

Magnet

Adjustment

4-53

Keyboard

Adjustment

4-54

Keyboard

Permutation

Unit

—

Rear

4-55

Keyboard

Permutation

Unit

—

Bottom

ampere

alpha

alphabetic

AMP

amphenol

auto

automatic

circuit

breaker

customer

engineer

CEM

Customer

Engineering

Memorandum

card

feed

chat

character

ckt

circuit

col,

cols

column,

columns

ctrl

control

direct

current

def

definition

dup

duplicate

friction

clutch

HSS

high-speed

skip

Hertz

(cycles

per

second)

Page

4-21

4-23

4-25

4-27

4-29

4-30

4-31

4-32

4-33

4-34

4-35

4-36

4-37

4-38

4-39

Figure

Title

Page

4-56

Keyboard

Key

Unit

and

Permutation

Unit

4-40

4-57

Keyboard

Interlock

Disks

4-41

Chapter

Power

Supplies

5-1

Power

Supply

5-1

5-2

Power

and

Receptacle

Requirements

5-2

Chapter

Locations

6-1

Combination

and

Numeric

Keystem

Numbering

6-1

6-2

Locations

—

Relay

Board and

Relays

6-2

6-3.

SMS

Printed

Wiring

Cards

. .

6-3

6-4

Wire-Contact

Relay

Machine

Relay

Gate

—

Card

Side

View

6-4

6-5

Locations

—

Front

View

6-5

6-6

Locations

—

Rear

View

(Reed-

Relay

Machine)

6-5

6-7

Locations

—

Rear

View

(Wire-Contact

Relay

Machine)

6-6

6-8

Locations

—

Rear

6-6

6-9

Locations

—

Front

6-7

Abbreviations

IBC

interposer

bail

contact

intlk

interlock

left

zero

max

maximum

millisecond

MULT

PCH

multipunch

normally

closed

normally

open

No.

number

num

numeric

PCC

program

cam

contact

preventive

maintenance

prem

program

sec

second

SMS

Standard

Modular

System

volt

Safety

Procedures

Safety

cannot

overemphasized.

ensure

personal

safety

and

the

safety

co-workers,

each

should

make

everyday

practice

observe

safety

precautions

all

times.

All

CEs

should

familiar

with

the

general

safety

parctices

and

procedures

for

performing

artificial

respira-

tion

that

are

outlined

Safety

Practices,

Form

229-1264.

For

convenience,

the

-1

printing

this

form

has

been

reproduced.

Always

use

reliable

voltmeter

verify

that

power

actually

off

after

using

power-off

switches.

Although

all

power

supplies

are

provided

with

bleeder

resistors

drain

off

capacitor

charges

when

power

dropped,

wise

check

all

capacitors

with

meter

before

attempting

maintenance.

defective

bleeder

resistor

could

create

unexpected

hazard.

Anyone

working

near

electrical

circuits

may

accidentally

come

contact

with

live

voltage.

Round

off

sharp

edges

plastic

guides;

replace

broken

guides.

Check

that

all

applicable

safety

devices

are

the

machine.

Check

all

safety

devices

for

proper

operation.

not

permit

machines

be run

unattended

with

covers

open

removed.

Leave

the

escapement

gearing

cover

place

all

times

when

the

machine

running.

Turn

off

power

when

tilting

the

base.

Use

only

IBM

approved

products.

Read

the

labels.

general

rule,

cleaning

fluids

should

used

only

open

area.

Breathing

the

concentrated

vapors,

even

for

short

time,

may

cause

immediate

reactions.

Review

Customer

Engineering

Memorandums

(CEMs)

for

current

safety

practices.

Rings,

wrist

watches,

chains,

bracelets,

metal

cuff

links,

shall

not

worn.

SAFETY

PRACTICES

All

Customer

Engineers

are

expected

take

every

safety

pre-

caution

possible

and

observe

the

following

safety

practices

while

maintaining

IBM

equipment:

You

should

not

work

alone

under

hazardous

conditions

14,

around

equipment

with

dangerous

voltage.

Always

advise

your

manager

you

MUST

work

alone.

15.

Remove

all

power

and

when

removing

assem-

bling

major

components,

working

immediate

area

16.

power

supplies,

performing mechanical

inspection

power

supplies

and

installing

changes

machine

circuitry.

Wall

box

power

switch

when

turned

off

should

locked

tagged

off

position.

‘Do

not

Operate”

tags,

form

18.

229-1266,

affixed

when

applicable.

Pull

power

supply

cord

whenever

possible.

When

absolutely

necessary

work

equipment

hav-

19.

ing

exposed

operating

mechanical

parts

exposed

live

electrical

circuitry

anywhere

the

machine,

the

following

precautions

must

followed:

20.

Another

person

familiar

with

power

off

controls

must

immediate

vicinity.

21.

Each

Customer

Engineer

responsible

certain

that

action

his

part

renders

product

unsafe

exposes

hazards

customer

personnel.

Place

removed

machine

covers

safe

out-of-the-way

place

where

one

can

trip

over

them.

All

machine

covers

must

place

before

machine

re-

turned

customer.

Always

place

tool

kit

away

from

walk

areas

where

One

can

trip over

(i.e.,

under

desk

table).

Avoid

touching

mechanical

moving

parts

(i.e.,

when

lubri-

cating,

checking

for

play,

etc.).

When

using

stroboscope

—do

not

touch

ANYTHING

—

may

moving.

Avoid

wearing

loose

clothing

that

may

caught

machin-

ery.

Shirt

sleeves

must

left

buttoned

rolled

above

the

elbow.

Ties

must

tucked

shirt

have

tie

clasp

(preferably

nonconductive)

approximately

inches

from

end.

Tie

chains

are

not

recommended.

Before

starting

equipment,

make

certain

fellow

CE’s

and

customer

personnel

are

not

hazardous

position.

Maintain

good

housekeeping

area

machines

while

per-

forming

and

after

completing

maintenance.

Only

insulated

pliers

and

screwdrivers

shall

used.

Keep

one

hand

pocket.

When

using

test

instruments

certain

controls

are

set

correctly

and

proper

capacity,

insulated

probes

are

used.

Avoid

contacting

ground

potential

(metal

floor

strips,

machine

frames,

etc.

—

use

suitable

rubber

mats

pur-

chased

locally

necessary).

Safety

Glasses

must

worn

when:

Using

hammer

drive

pins,

riveting,

staking,

ete.

Power

hand

drilling,

reaming,

grinding,

ete.

Using

spring

hooks,

attaching

springs.

Soldering,

wire

cutting,

removing

steel

bands.

Parts

cleaning,

using

solvents,

sprays,

cleaners,

chemicals,

etc.

All

other

conditions

that

may

hazardous

your

eyes.

REMEMBER,

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Special

safety

instructions

such

handling

Cathode

Ray

Tubes

and

extreme

high

voltages,

must

followed

outlined

CEM’s

and

Safety

Section

the

Maintenance

Manuals.

not use

solvents,

chemicals,

greases

oils

that

have

not

been

approved

IBM.

Avoid

using

tools

test

equipment

that

have

not

been

approved

IBM.

Replace

worn

broken

tools

and

test

equipment.

10.

Lift

standing

pushing

with

stronger

leg

muscles

—

this

takes

strain

off

back

muscles.

not

lift

any

equip-

ment

parts

weighing

over

pounds.

11.

All

safety

devices

such

guards,

shields,

signs,

ground

wires,

etc.

shall

restored

after

maintenance.

KNOWING

SAFETY

RULES

NOT

ENOUGH

UNSAFE

ACT

WILL

INEVITABLY

LEAD

ACCIDENT

USE

GOOD

JUDGMENT

—

ELIMINATE

UNSAFE

ACTS

229-1264-1

Start

Immediately,

Seconds

Count

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Section

Reference

Data

Figure

1-1

shows

machine

characteristics

for

the

IBM

Card

Punch.

1.1

OPERATIONS

The

Card

Punch

operations

may

divided,

shown

Figure

1-2,

for

troubleshooting.

These

operations

are:

Start

and

Run:

Establishment

power

(electrical

and

mechanical)

necessary

for

machine

operations.

This

includes

the

operation

the

card

feed

and

the

pick-and-hold

the

card

lever

relay.

Interposer

Selection:

Engagement

of an

interposer

interposers

with

the

punch

bail

preparation

for

punching.

Escapement:

Advancement

the

program

drum

and

the

escapement-driven

feed

wheels.

Characteristics

Description

Speed:

Without

With

Manual

punching

col/sec

Manual

duplication

col/sec

Automatic

duplication

col/sec

Skipping

col/sec

Releasing

col/sec

Feed

from

pre-register

detail

0.250

sec

station

Hopper

500

cards

Stacker

500

cards

Figure

1-1.

Characteristics

Start

and

Run

Card

Lever

Relay

Interposer

Escapement

Punch

Drive

Selection

Unit

Cycles

Card

Transport

Figure

1-2.

Operations

Chapter

Reference

Data

and

Service

Aids

Card

Transport:

Mechanical

control

the

movement

the

card

through

the

machine.

Punch

Drive

Cycle:

Controlled

rotation

the

punch

drive

unit

index

shaft.

According

the

function,

this

required

punch

hole

the

card

the

punch

station

read

hole

the

card

the

pin-sense

station.

1.2

SEQUENCE

OPERATIONS

essential

that

the

customer

engineer

aware

the

correct

sequence

operations

they

are

used

any

machine

function.

1.2.1

Functions

When

the

function

punch

character

from

the

keyboard,

the

sequence

operations

is:

Start

and

run

Interposer

selection

Escapement

Card

transport

Punch

drive

cycle

Using

the

numbers

only,

the

sequence

is:

3-4

Showing

escapement

and

card

transport

(3-4)

side

indicates

that

while

causes

they

occur

the

same

time.

Using

this

notation,

the

sequence

these

operations

for

all

the

functions

the

Card

Punch

shown

Figure

1-3.

The

functions

shown

Figure

1-3

are

the

responses

the

machine

the

inputs

shown

here:

wPWN

Key

Punch

Press

any

character.

Multiple

Punch

Press

the

multiple

punch

key

and

any

numeric

key.

Key

Skip

Press

the

skip

key

numeric

alpha-

betic

shift.

Press

the duplicate

key

for

one

columns

with

programming.

Manual

Duplicate

Blank

Column

Manual

Duplicate

Press

the

duplicate

key

for

one

blank

columns

with

programming

and

with

the

machine

alphabetic

shift.

Pressing

the

duplicate

key

the

reading

a “0”

the

program

card

column

followed

“12’s”

the

program

card.

Auto

Duplicate

Blank

Column

Auto

Duplicate

Same

“Auto

Duplicate”

but

for

blank

columns

with

the

machine

alpha-

betic

shift.

Skip:

Release,

Auto,

Press

release

key

starwheels

are

Drum

they

are

down

column

pro-

grammed

“12”.

“11”

program

card.

Card-to-card

skip.

Release,

Auto

Space

Press

release

key

nonprogrammed

field

but

with

the

starwheels

down.

29FEMM

(4/69)

1-1

Blank Blank

|Skip:

Column

ColumnjRelease,|

Release

Key

Mult

Skip

|Manual|/Manual]

Auto

|Auto

|Auto,

|Auto

Function|

Punch

Key

Dup

Dup Dup

|Dup

{Drum

|Space

First

Col

4-5

1 1

-2|

5-2

3=4

3-4

-4

3-4

nob

ND wm

QtnNn-=

Second

Repeat

2-5

3-4

Repeat

Repeat}

3-4

Repeat

and

for

All

Repeat

Repeat}

forAll

forAIl

5-2

for

All

for

All

Other

Cols

for

All|

for

Cols

{Cols

Repeat

|Repeat|

Cols

Cycles

Field

for

Def

Field

Def Def

3-4

Last

Col

Figure

1-3.

Sequence

Operations

Section

Diagnostic

Techniques

1.3

INITIAL

APPROACH

The

first

step

troubleshooting

reduce

the

possible

trouble

sources

one

the

five

operations.

Locate

the

operation

that

breaks

the

correct

sequence

for

the

failing

function.

The

second

step

vary

the

machine

function

one

which

the

failing

operation

occurs

another

sequence.

This

tests

the

same

operation

with

different

input.

For

example,

interposer

selection

faulty

during

keypunching

(2,

34,

5).

Varying

the

function

manual

duplication

(5-2,

3-4,

allows

interposer

selection

from

the

pin-sense

input

instead

the

key

input.

The

cause

the

failure,

particular

input

path,can

discovered

this

way.

the

same

operation

fails,

regardless

the

input

path

used,

the

failure

common

all

paths.

Enough

information

may

gained

in this

way

find

the

cause

the

failure

using

the

wiring

diagram

and

the

test

probe.

For

those

troubles

that

cannot

found

using

this

approach,

refer

the

appropriate

section

Chapter

Diagnosis

the

complete

failure

all

machine

opera-

tions

should

preceded

continuity

check

the

fuses.

attempted

punching

fails

occur

after

card

has

been

registered

the

punch

station,

the

card

lever

relay

should

checked

first.

Consistent

blowing

fuses

indicates

short

ground

the

machine.

Line

terminals

and/or

cam

contacts

can

checked,

one

time,

locate

this

type

failure.

Some

common

possible

sources

grounds

are

the

starwheel

contact

and

the

latch

magnet

contact.

1.4

DIAGNOSTIC

FLOWCHARTS

Figure

1-4

defines

the

symbols

used

the

diagnostic

flowcharts

(Figures

1-5

through

1-10).

These

flowcharts

aid

locating

the

trouble

area

when

diagnosing

fairly

consist-

ent

failures.

1-2

(4/69)

Trouble

approach

action

Error

indication

decision

Direction

comment)

Figure

1-4.

Diagnostic

Flowchart

Symbols

1.4.1

Start

and

Run

Failures

locate

start

and

run

failures

(Figure

1-5),

the

starwheels

must

raised

and

blank

cards

must

used.

1.4.2

Card

Transport

Failures

Diagnosis

the

failure

causing

incorrect

card

movement

should

include

initial

visual

check

confirm

that

the

components

the

card

transport

mechanisms

are

oper-

ating.

When

card

transport

failure

occurs,

any

mark

nick

the

card

will

help

indicate

the

source

trouble

(Figure

1-6).

change

registration

during

the

duplication

one

punched

card

can be

false

indication

card

transport

failure.

the

escapement

moves

while

the

sensing

pins

are

still

through

the

holes

the

card,

the

card

will

retarded.

The

sensing

pins

usually

leave

marks

the

card.

(See

1.4.4.)

Improperly

inserting

cards

into

the

pin-sense

station

can

cause

trouble.

The

card

duplicated

should

not

forced

into

the

pin-sense

station

before

registering

the

card.

1.4.3

Interposer

Selection

Failures

Interposer

selection

may

incorrect

from

either

the

keyboard

pin-sense

units,

both.

either

unit

operates

correctly,

the

circuits

and

components

the

other

unit

must

considered

source

the

trouble.

both

units

fail,

the

trouble

assumed

the

interposer

magnets

and

associated

circuitry

the

interposer

mechanism

(Figure

1-7).

Note

that

when

the

interposers

have

been

tripped

for

any

reason,

they

must

restored

drive-unit

cycle.

avoid

confusion

diagnosis,

the

starwheels

must

raised

locate

interposer

selection

failures.

1.4.4

Escapement

Failures

Faulty

escapement

defined

as:

escaping

too

far,

not

far

enough,

not

all,

the

wrong

time.

Program

control

used

with

Figure

1-8

locate

escapement

failures.

The

program

card

should

punched

for

alternate

three-column

duplications

and

two-column

Slowly

overheats

Set

mainline

and

motor

switches

Motor

Check

motor

start

relay

Check

motor

Card

not

fed

pre-register

station

Check

card

clack

—

par

eerannAO

Check

clutch

cao

Check

magnet

circuit

[cheek

card

feed

[chest

card

lever

cow)

trouble

found,

card

transport

flowchart

(Figure

1-6)

Check

latch

mechanism

Check

magnet

circuit

Check

card

feed

mechanism

trouble

found,

card

transport

flowchart

(Figure

1-6)

Does

not

Figure

1-5.

Start

and

Run

Failures

Yes

Release

and

feed

card

and

program

drum

ro-

Yes

the

card

and

space

out

Drum

does

not

column

ike

spacing

punch

drive

cycles

Check

mainline

voltage

Check

mainline

fuses

Check

motor

start

relay

Check

motor

Check

punch

clutch

operation

Check

voltages

Check

release

relay

Check

skip

relay

Check

skip

escape

circuits

Check

program

cam

contact

severed

trouble

found,

escapement

flow-

chart

(Figure

1-8)

Check

card

lever

relay

contacts

Check

card

lever

contoct

Check

card

lever

relay

pick-and-hold

circuits

trouble

found,

escapement

flowchart

(Figure

1-8)

spacing,

punch

drive

cycles

flowchart

(Figure

1-9)

punch

drive

cycles

FEMM

(4/69)

1-3

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