Harris CRITERION 90-1 User manual

www.SteamPoweredRadio.Com

TECHNICAL

MANUAL

HARRIS

www.SteamPoweredRadio.Com

•

m

T.M.

No

. 888 1729 001

Price:

$6.00

TECHNICAL

MANUAL

CRITERION

90-1

AND

90-2

RECORD/PLAYBACK

UNITS

HARRIS

CORPORATION

Broadcast Products Division

Printed:

July

1977

www.SteamPoweredRadio.Com

LIST

OF

EFFECTIVE PAGES •

TOTAL

NUMBER

OF

PAGES

IS

AS

FOLLOWS

:

87

PAGE

NO

ISSUE

PAGE

NO

ISSUE

Title

Page .............

Origina

l

List

of

Effective

Pages

.

................

Original

iii

through

vii

.....

.

..

Original

1-0

through

1-4

........

Original

2-1

through

2- 6

..

......

Original

3

-1

through

3-7

........

Original

3- 8

........

.

..........

..

Blank

4-1

through

4-3

........

Original

4-4

....................

Blank

5-1

through

5- 25

.......

Original

5-26

.......

............

Blank

6-1

through

6-31

.......

Original

6-32

............

..

.

Blank

7-1

thr

ough

7-5

........

Original

7-6

....................

Blank

•

ii

WARNING: Disconnect primary power

prio

r

to

servicing.

www.SteamPoweredRadio.Com

•

SAFETY

NOTICE

WARNING:

THE

CURRENTS

AND

VOLTAGES

IN

THIS

EQUIPMENT

ARE

DANGEROUS

AND

UNDER

CERTAIN

CONDITIONS,

COULD

BE

FATAL.

This

manual

is

intended

as

general

guidance

for

trained

and

qualified

in-

stallation,

operating,

maintenance

and

service

personnel

who

are

fami

liar

with

and

aware

of

the

dangers

inherent

to

handling

potentially

hazardous

elec

tri

cal

and/or

electronic

circuits.

It

is

not

intended

to

co

ntain

a

complete

statement

of

all

safety

precautions

which

should

be

observed

by

personnel

in

using

this

or

other

electronic

equipment.

THE

INSTALLATION,

OPERATION,

MAINTENANCE

AND

SERVICING

OF

THIS

EQUIPMENT

INVOLVES

RISKS

TO

BOTH

PERSONNEL

AND

EQUIPMENT

,

AND

MUST

BE

PERFORMED

ONLY

BY

PROPERLY

TRAINED

AND

EXPERIENCED

PERSONNEL

EXERCISING

DUE

CARE.

PER-

SONNEL

MUST

FAMILIARIZE

THEMSELVES

WITH

SAFETY

REQUIREMENTS

,

SAFE

HANDLING

AND

OPERATING

PRACTICE,

AND

PROCEDURES

(E.G. ,

FOR

ELEC

-

TRICAL

BURNS

AND

ELECTRICAL

SHOCK).

HARRIS

CORPORATION

Broadcast

Equipment

Division

shall

not

be

responsible

for

injury

or

damage

resulting

from

improper

installa

t

ion,

operat

i

on

,

main-

tenance

or

servicing,

or

from

the

use

of

improperly

trained

or

inexperienc-

ed

personnel

in

the

performance

of

such

tasks

,

or

from

the

failure

of

per-

sons

engaged

in

such

tasks

to

exercise

due

care.

As

with

all

electronic

equipment,

care

should

pe

taken

to

av

oid

elect

ri

ca

l

shock

in

all

circuits

where

substantial

currents

or

voltages

may

be

pr

e-

sent,

either

through

design

or

short

circuit.

Caution

should

also

be

ob-

served

in

lif

tin

g and

hoisting

equipment,

especially

regarding

large

struc

-

tures,

during

installation

.

LIABILITY

LIMITATION

The

procedures

outlined

in

this

Manual

are

based

on

the

information

avai

l-

able

at

the

time

nf

publication

and

should

permit

the

specified

use

with

minimum

risk.

However,

the

manufacturer

cannot

assume

liability

with

re-

spect

to

technical

application

of

the

contents

and

shall,

under

no

circum

-

stances,

be

responsible

for

damage

or

injury

(whether

to

person

or

proper

-

ty)

resulting

from

its

use

.

The

manufacturer

is

specifically

not

liable

for

any damage

or

injury

aris-

ing

out

of

failure

to

follow

the

instruc

t

ions

in

this

Manual

or

failure

to

exercise

due

ca

re

and

caution

dur

ing

installation,

operation,

mainte-

nance

and

service

of

this

equipment.

CAuT

I

ONARY

NOT

I

CE

Always

disconnect

power

before

opening

covers,

doors,

en

clos

ures,

gates

.

panels

or

shie

l

ds.

Always

use

grounding

sticks

and sho

rt

o

ut

high

volt-

age

points

before

se

rvi

cing.

Never make

int

erna

l

adjustments,

perform

maintenance

or

service

when

alone

or

wh

en

tir

ed.

Never remove, sh

ort-circuit

or

tamper

with

interlock

switches

on

access

covers,

doors,

enclosures,

gates,

panels

or

shields

. Keep away from

live

circuits

, know

yo

ur

equipment

and

don't

take

ch

ances.

Proper

training

of

experienced

personnel

and

observing

the

above

guide

lines

will

help

as-

sure

safe

and

con

tinu

ed

ope

ration

of

this

equipment.

iii

www.SteamPoweredRadio.Com

TABLE

OF

CONTENTS

Paragraph

SECTION

I.

DESCRIPTION

AND

SPECIFICATIONS

1-1.

Scope

..............•..........•.•.............•.....•...•......

1-1

1-6.

Equipment

Characteristics

•.

•

..•.•

.•....

•.•...•••.....•.

••

....

•.

1-2

2-1.

2-3.

2-5.

2-8.

2-

10

.

2-11.

2-13.

2-15.

2-17.

2-19.

2-21.

2-

23.

3-1.

3- 3.

3-5.

3-7.

4-1.

4

-5

.

4-

9.

4

-11.

4-13

.

4-17.

5-1.

5-

2.

5-4.

5

-6.

5-8.

5-9.

5-12.

5

-1

3.

5-14

.

5

-15

.

5

-1

7.

5-19.

5-21.

iv

SECTION

II.

INSTALLATION

Scope

Incoming

Inspection

and

Unpacking

...•..•.•..•.•

•..•.••

..

...•

..•

Unpacking

.

.....

.

~

•..

..

.......•.....................

.

...........

Returns

and

Exchanges

..

...

.........

.

...

.

......................

.

Installation

Procedures

........

.

..

.

....

............•...........

General

Requirements

. .

.....

. .

.........••..

•

......•

•...•..•...

Monophonic

Play

back

...•.......••.•...........................

Stereophonic

Playback

...................................•..

. .

Program

Output

Impedance

.•..•.....•.•....••...

.

.•.

••.

••....•

.

Record

Amplifier

Program

Input

..

............................

.

Record

Amplifier

Input

Impedance

......

•.

.....................

Remote

Control

Connections

.....

..

....

.

..

.

......

•....

.........

SECTION

III.

OPERATION

2-1

2-2

2- 5

2-5

General

. . . . • . . . . . . . • . . . . . • . . . . • . • . . . . . . . . . . . • . . . . . • . . . . . . . . . . . .

3-1

Controls

and

Indicators

.......

.

........•.............•.........

3-1

Playback

Operating

Procedure

.••

.•

•.•

.....•.

•..•..••.•..•..•....

3-6

Record

Operating

Procedure

..•...•

•.•.

.

••.•.

. •

..•.

•.

. •

..

...••.•.

3-6

SECTION

IV

.

THEORY

OF

OPERATION

Playback

Program

Amplifier

(Monophonic

or

Left

Stereo

Channel)

.

4-1

Cue

Sensor

Ca

rd

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-1

Record

Program

Amplifier

.....

.

•..•...

.

.......

..

. . . .

.......••.

. .

4-2

Bias

Oscillator

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-2

Three-Tone

Oscillator

. .

.....

........•..•..•.......•............

4-2

Control

Functions

.............•...........

..

.

...

. .

...

....

...

4-3

SECTION V.

ADJUSTMENTS

AND

MAINTENANCE

Preventive

Maintenance

Record/Playback

Heads

..............

.

........

.

.........

.

.....

.

Capstan

and

Pinch

Roller

..

....

. .

....

. .

....

.

....

.

..

. .

..

.

Pinch

Roller

Cross

Shaft

•..............................

.

.....

Head

Replacement

and

Adjustme

nt

.....

.

..............•..•..•.....

Replacement

..........

.

.....

..

......

....

..•...........•..•..•.

Height

Adjustment

. ,

.......•..•...•...........•.•..•..••....

Azimuth

Adjustment

. .

....

....•.....•..............•....•..••

Stereo

Phase

Playback

Adjustment

. .

........................

.

Deck

Adjustments

..

..•

...........•.......

••

.

••••.

...

.•

.

.•

•.••

.

Cross

Shaft

Assembly

........................................

.

Motor

Position

•............

.....

..

.

.....

...............

......

Solenoid

Adjustment

. .

......................................••

WARNING: Disconnect

primary

power

prior

to

servicing

.

5

-1

5-1

5-3

5-5

5-7

•

....

"

N

1.0

•

www.SteamPoweredRadio.Com

• Pa

ragrapr

5-25.

5-26.

5-28

.

5-29.

5-31.

5-33.

5-34.

TA

ELE

ot

CON

T

ENTS

(Con

t

inued)

~a

ge

Electrical

Adjustments

....

...

..................

..

..............

5- 9

Adjustment

Locations

and

Fun

c

tions

....

.

...............

.

..

. .

..

5-9

Cue

Sensor

Adjustment

...................

.

..

......

.

...

5-9

Record/Program

Amplifier

Alignment

.............

..

........

.

...

5-

20

Playback

Program

Amplifier

Adjustments

.......................

5-20

Cue

Frequen

cy and Record

Level

Adjustments

.........

..

......

5-21

Operating

Voltages

.............•...

.

....

.

..

.

.....

.

...........

..

5-22

SECTION

VI .

PARTS

LIST

6-1.

Introduction

. .

....

.........

.................

•

........

.

........

•

6-1

6-3.

Replaceable

Parts

Servi

ce

...........•............•.............

6-1

6-5.

Technical

Assistance

.........

.

.......

..

.........

.

..

.

...........

6-1

SE

CTIO

N

VlI.

DIAGRAMS

7-1.

Introduction

7-1

•

• V

WARNING· Disconnect primary power

prior

to servi

r.

ing.

www.SteamPoweredRadio.Com

LIST

OF

TABLES

Table

1-1.

Criterion

Cartridge

Tape

Units

....•........•..•......

.

..........

1-2.

Criterion

90

Characteristics

.................................

. . .

2-1.

Playback

External

Connections

..................................

.

2-2.

Record

External

Connections

....................................

.

3-1.

Playback

Controls

and

Indicators

...............................

.

3-2.

Record

Controls

and

Indicators

.......

...

..................

..

...

.

5-1.

Stereo

Program

Amplifier

Adjustments

(Figure

5-8)

..............

.

5-2

.

Cue

Sensor

Adjustments

(Figure

5-9)

....

.

...................

....

.

5-3.

Record Program

Amplifier

Adjustments

(Figure

5-10)

..

. .

.....

.

5-4.

Bias

Oscillator

Ad

j

ustments

(Figure

5-11)

......................

.

5-5.

Three-Tone

Oscillator

Adjustments

(Figure

5-12)

...............

. .

6-1

.

Replaceable

Parts

List

Index

.

..

....

•...

...

.

...........

.

.....

.

...

6-2

.

Criterion

90-1

and

90-2

Playback

Chassis

..

.

....................

.

6-3.

Mono

Program

Amplifier

. .

.........

.

..

.

..

.

.....

.

..

.

..............

.

6-4.

Stereo

Program

Amplifier

.......................................

.

6-

5.

Cue

Sensor

Boa

rd

........

. . . . .

.............

.

......

.

.............

.

6-6.

Record/Program

Amplifier

....................•...................

6-7.

Bias

Oscillator

Module

..............•...........................

6-8.

Tone

Oscillator

Module

...........................

.

.....

..

.....

. .

6-9

.

Auxiliary

Equipment

..............................

..

...........

. .

vi

WARNING: Disconnect primary power prior

to

servicing.

1-1

1-3

2- 5

2

-6

3-3

3-5

5-11

5-13

5-15

5-17

5-19

6-2

6- 3

6-10

6-12

6-16

6-22

6-25

6-27

6-31

•

I-'

-..J

N

'°

•

www.SteamPoweredRadio.Com

•

LIST

OF

ILLUSTRATIONS

1-1.

Criterion

90-1

and

90-2

Record/Playback

Units

....

...

.........•

.

1-0

2-1.

Criterion

90

Rear

Panel

Connections

...........

. .

..

.

•.........

. .

2-3

2-2.

Input/Output

Transformer

Connections

.•...........

.

.....

.

.......

2-4

3-1.

Playback

Controls

and

Indicators

(Common

to

all

Units)

.........

3-2

3-2.

Record

Controls

and

Indicators

........

.

.....

.

......

..

.

...

..

...

.

3-4

5-1.

5-2.

5-3

.

5-

4.

5

-5.

5-6.

5-7.

5-8.

5-9.

5-10.

5-11.

5-12

.

7-1.

7-2

.

Head

Wiring

(Rear

View)

..

.

........

.

......

...

.

....

..

.

...........

5-2

C

riterion

90-1

and

90-

2,

Tape Deck

Dimensions

...

.....

...

.......

5- 2

Head/Guide

Height

Gauge

.....

.

....

.

......•.....•................

5-4

Head

Adjustments

.....................................

.

......•..

5-4

Head Assembly, Tape

Guide

...

....

..

....

. .

.............

. •

......

. .

5-4

Stereo

Phasing

Patterns

.

.......

...........•.....•

..

....

...

.....

5-6

Pinch

Roller

Adjustment

Gauge

(Larger

Portion

of

Gauge

815 0842 001)

...

.•...

.

...

.

......

.

............•..............

5-8

Stereo

Program

Amplifier,

Adj

u

stment

Locations

....

..

.

•.

.

.......

5-10

Cue

Sensor,

Adj

us

tment

Locations

. . . . • .

..

• . . . . .

..

. . . .

..

.

5-12

Record

Program

Amplifier,

Adjustment

Locations

..

.

.............•

5-14

Bias

Oscillator

,

Adjustment

Locations

. .

....

........

.

..

.........

5-16

Three-Tone

Oscillator,

Adjustment

Locations

......•.......

.

.....

5-18

Criterion

90-1

and

90-2

Playback

. •

..

•....

....

..........••

. . •

...

7-3

Criterion

90-2

Record . .

.•......

.....

..........•..•

..

•..

.

....

...

7-5

vii

WARNING

:

Disconnect

primary

power

prior

to

servicing

.

www.SteamPoweredRadio.Com

f

■

I"

M

CRITERION

90-1

I• '

CRITERION

90-2

RECORD/PLAYBACK

f!il!J!!.t-JI

'

CRITERION

90-2

PLAYBACK

Figure

1-1.

Criterion

90-1

and

90-2

Record/Playback

Units

1-0

WARNING: Disconnect primary

power

prior

to

servicing.

1729-1

•

~

--.J

N

'°

•

www.SteamPoweredRadio.Com

•

°'

N

,-..

.-I

•

1-1.

SCOPE

.

SECTION

I

DESCRIPTION

AND

SPECIFICATIONS

1- 2.

This

manual

provides

operating

and

maintenance

info

r

mation

for

the

Criterion

90-1

playback

unit,

the

Criterion

90-2

record/playback

unit,

and

the

Criterion

90-2

playback

only

unit

(figure

1-

1).

Each

of

the

units

is

available

in

either

monophonic

or

stereophonic

configuration.

In

addi-

tion,

the

units

can

also

be

specified

by

the

customer

for

117-volt,

50-Hz

operation.

The

manufacturer's

part

number and

NAB

cartridge

sizes

for

each

configuration

are

listed

in

table

1-1.

Table

1-1.

Criterion

Cartridge

Tape

Units

UNIT

PART

NO.

NAB

CARTRIDGE

SIZE

Criterion

90-1-Mono 994 7993 001 A

or

B

Playback

Crite

ri

on

90-1-Ste

reo 994 7994 001 A

or

B

Playback

Criterion

90-2

-M

ono 994 7995 001 A, B,

or

C

Playback

Criterion

90-2-Stereo

994 7996 001

A,

B,

or

C

Playback

Criterion

90-2-Mono 994 7997 001

A,

B,

or

C

Record/Playback

Criterion

90-2-Stereo

994 7998 001

A,

B,

or

C

Record/Playback

1-3.

The

tape

units

use

solid-state

electronics,

consisting

of

sili

-

con

transistors

and

integrated

circuits,

to

provide

temperature

and

gain

stability.

1-4.

The

heart

of

the

Criterion

90

machines

is

the

synchronous

hysteresis

motor

with

direct

capstan

drive.

The

motor

assembly

is

precisely

mounted on a

heavy

half-inch

aluminum

deck

plate,

and

uses

a full-'SW'ing

pressure

roller

to

provide

optimum

tape

accuracy

.

1-1

WARNING: Disconnect primary

power

prior

to

servicing.

Harris CRITERION 90-1 User manual

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