Pentron NL-1, NL-1S, NL-2, NL-2S, NL-3 Schematic

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GENERAL

NL-z,

either

ull length

on these

upon

the

*1N-rslo

{,tTll

INFORMAT

NL-2S,

3 3

machines

tape

thickness.

ION

NL-3,

inches

/4

recordings

and therefore

per

and

second

can

be made

PENTRON

NL-2,

NL-3S

are.designed

or ?

on

arecording

-25,

L/2

h;nes

a single

MODELS

NL-3,

for

making

per

second.

reel

time

of tape.

of 3

-3S,

hours

NL-|,

TM-l

-lS,

-4

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TM-4.

connecting

HOWARD

Models

These Models

to

w.

TM-l

your

line

sAts

and

TM-4

for

are

operation

supply, make

fhis

DATE

are

777

C

moleriol

&

Copyright

ldentical

Pentron

h

co.,

9

except

on a

60

certain

Manufactured

South

icago

compiled

cycle 105 to

that

it agrees

Corporation

Tripp

24,

I lli nois

ond

lNC., INDIANAPO[15,

c366

-

1958

58

All Righrs

for

the

b!:

Avenue

published

Reserved

sterophonic

120

volts,

with

the

above

by

heads

AC

supply

speciiications.

str

used

only.

INDIANA

414

ln Modtri

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Page

2

TABLE

CONTENTS

OF

Page

General

Information

Specifications

I\rnctions of : Schematic

Controls,

operating

Mechanical Adjustments

Parts Replacement.

Lubrication

Indicators, & Switches

Instructions

......13 ElectricalPartsList-ModelNL-1

Cleaning

Exploded

TM-I

Transport

SPEEDS: Record FAST FORWARD:

REWIND:

FLUTTER:

Of Parts

View

View Of

Mechanism

Complete

seconds.

Under

MOTOR: Heavy duty

namically

CONTROL: Single

TM-4

Transport Mechanism

Fast Forward, and Rewind.

The TM-4

except that it uses a stacked

NL-I Recorder

FREQUENCYRESPONSE:

POWER

SIGNAL

"RECORD-PLAYBACK

andDOUBLE RECORD LEVEL INDICATOR: Neon

INPUT JACKS:

OUTPUT

TUBE

POWER

DMENSIONS: 14'W x 1?"D x 11"H.

WEIGHT: 25 lbs.

OUTPUT:

NOISE

TO

GAPERASE

One

cartridge; one stal or ceramic

JACKS: One

COMPLEMENT: One

CONSUMPTION:

Above Mechanlsm Plate

Parts BelowMechanism

playback,

and

Complete

?5

seconds.

rewind of

at7 L/2 ips.

0.470

1

%at3

pole,

4

and individually balanced.

rotary

mechanism

T l/2 and

a

of

wind

a

inch reel in 90

?

3/4ips.

shaded

control

pole

for PIay, Record,

is the same as TM-1

"stereo"

40to 1t000cpsat ?

head assembly.

40to ?,000cpsat

4

watts.

RATIO:

for microphone

phone speaker.

45 db.

IIEAD"

HEAp:

Ilave replaceable

'pole

type.

or magnetic

for radiq

phono

for

external amplifier or

monitoring;

each 6J?, 6SL?,

6V6.

?0

watts,

one for external

full load.

Plate.

3 3/4

7 inch

motor,

3 3/4ips.

pieces.

and

TV,

cartridge.

6X5, and

I 3 Electrical

n t 8

10

13 L4

15

.

SPEC

IFICATIONS

ips.

reel in

dy-

L/2ips;

phono

cry-

head-

Mechanical

*n"-atic ,"n"-atic

M""hanical

Models

Electrical Electrical

Mechanical Specifications

as mentioned above.

.TM-1

Recorder

NL-lS

The

that it

"stereo"

SIGNAL

andDOUBLE RECORD

AUTOMATIC INPUT

TUBE COMPLEMEITIT: One each

DIMENSIONS:

WEIGIIT:

uses a stacked

NL-2 Recorder

FREQUENCY'RESPONSE:

POWER

"RECORD-PLAYBACK

JACKS:

OUTPUT

POWER

Mechanical

as

TM-1,

NL-25 Recorder

The

it uses a

that "stereo"

Troubles And Probable Remedies . . .

Troubles And Probable

Diagram Diagram Diagram

parts

TM-l

,

_

-

List

NL-1, NL-z, & NL-3.

NL-l .

Model

NL_2

Model NL-3 .

_

Remedies.

.

. . .

. 23

Parts List Parts List

NL-1S

preamplifier.

OUTPUT: 5

TO NOISE RATIO: 48 db.

GAPERASE HEAD:

LEVEL INDICATOR:

INDEX

One

cartridge; stal or ceramic

JACKS:

CONSUMPTION:

14"W x L6

29 lbs.

mentioned above.

NL-2S is the same as Model NL-2 except

stacked

preamplifier.

Model NL-z .

-

Model NL-3 .

-

is

same as Model NL-1 except

the

"stereo"

40 to 13,000 40

to

watts.

HEAD"

COUNTER,

for microphone

one

for

One

phone speaker.

Specifications

external

monitoring;

and 6E5.

80

watts,

3/4"D

"stereo"

are the

head assembly

?,000

Magic eye.

for radio, TV,

phono

6J?,6SL?, 6X5,6V6,

x 10

are

head assembly and a

same

at ? L/2 ips;

cps cps at 3 3/4 ips.

HFve

replaceable

pole pieces.

magnetic

or

amplifier

one

full

3,/4"H.

the

andcry-

cartridge.

or

for

external

load.

same as for

Page

as

for

and a

phono

head-

ZL

22

27

24

16

L1

19

25

2-

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\

Production TM-1

Later

Figu re I

NL-3

Recorder

FREQUENCY

POWER

SIGNAL

"RECORD-PLAYBACK

andDOUBLE

RECORD LEVEL INDICATOR:

AUTOMATIC INDEX

INPUT

RESPCNSE: 40

OUTPUT: 10 watts,

TO

NOISE RATIO: 50

GAPERASE

COUNTER.

JACKS:

for microphone

One

to tS,dOO cps at

40

to

push-pull.

HEAD"

HEAD:

cartridge;one stal or ceramic

FUNCTIONS

Control

Speed

Tape speed

Control

Lever

the lever is in

will be 7

the

neutral

operation Lever when the

left or

Shaft

The Idler

(95)

l/2 ips.

speed

wiII

position.

mechanical

The

is

(26)

engages the

Speed

right,

(6?)

or

Wheel

are attached

is

controlled by

(26)

either to the right

right

the

be

hand

it is in the left hand

When

ips.

3 3/4

Change of

action

as follows: A notch

Control Sector

Speed

Control

the Speed Control Sector (69)

are

(94)

to the shaft

Lever

moved up or

and

Idler Bracket

assembly and move

Models Are Equi

. Top View

?,500

cps

db.

Have

pole pieces.

Illuminated VUmeter.

magnetic

or

for radiq

phono

T{

cartridge.

OF

moving

0f

7

l/2

g

at

3/4

replaceable

phono

and

CONTROLS,

the

or left. When

position

during

is moved

the

a

in

the Speed

and

down,

tape

position

speeds should

speed-change

Control

(25)

so

either

attached

the

accordingly.

Assembly

Sub

Record-Play

with

and

Double

TM-l With Escutcheons Removed.

JACKS:

35 Ibs.

Recorder

One

phone

speaker.

1/8"W

The NL-3S is the same as Model

uses

a

stacked

preamplifier.

AND

SWITCHES

it,thus

with

one

(99).

hand

(99).

Speed

the

or

and

Control

Idler

allowing

the other

When the

position contacts the smaller

A

tape

Lever

Wheel

larger

tape

speed of.7 L/2

the

When

to

movement

Speed

Speed Control

a tape

select

of the

Equalization

for the ? l/2

ips;

ips.

cry-

Speed

speed

that

to the

up

or

OUTPUT

TUBE COMPLEMENT: One each 6J?, 6SL7, 6X5, 6V6,

POWER CONSUMPTICN: 110

DIMENSIONS: 1?

WEIGHT:

NL-3S

that it

"stereo"

I ND I CATORS,

down

tact

PuIIey

the left

position

Pulley

the

ition

contactsthe

results in a

the right

ward the

M7 on Model NL-3) to

equalization

Erase

Gap

for

external

monitoring;

l2AU7,

"stereo"

& two 6AQ5's.

watts,

x

4"D

17 3f

head assembly and a

Idler

the

of the two

Speed

the Idler

speed

(94)

stepof

Speed Change Shaft

open

Control

Wheel

ot 3 3/4

(26)

is in the right hand

is

in the down

the Motor PuIIey(99).

ips.

Lever

speed

of.7

ips

in

speed.

(M3

order

Switch

Heads.

amplifier

for

one

fuII

load.

x

11"H.

head

or

external

NL-3 except

(94)

Wheel

tocon-

steps on the Motor

(26)

Lever

(9a)

step

of

ips results.

position

(26)

is moved

l/2

ips, the

on Model NL-2 and

to obtain

is in

is in the up

the Motor

WIen

pos-

and

This

down-

(69)

causes

correct

to

Page 4

Rotary

operation Rotary

Control

The Rotary

the transport mechanism.

of

Control

is

turned to the left,

clockwise direction from

mechanism

the

control

neutral

ation.

operation

from

neutral and

CAUTION: Do not attempt

The

when

the rotary

Action

be

can

considered

Control

depressed.

upper

surface

Wind and Confrol is turned to the

Plate

Slide

the stud.

engages

the

Tie Bar to move back,

izer

Bar

The

sliding action

Idler

Release Lever Assembly

in the

same

placed

is

in

Fast Forward

is turned in a

the mechanism is

place

To

the

idler

not

Rewind

As

one end of the Tie Bar

(88)

the mechanism in

Rotary Control

turned to

left

while it

control is in neutral

the

of

depressed, and

Under the first

of

is

Rotary

under

is

two

wheel

the assembly

Plate

Slide

right for

(47)

is moved to

the

and

Plate

Slide

thus tightening the Feed

of the

assembly

(48)

Figure

(3)

2.

governs

the neutral

operation. When

clockwise

placed

in

Fast Rewindoper-

pressed

is

right.

the

to turn

depressed.

automatically

Control Shaft

conditions;

moves, a

pushing

Slide

which engages

the

position.

(2)

with Rotary

condition a

engages a

(47).

When

Rewind

left

the

shaped slot

Assembly

against

Plate

(48)

by

Top View

the mechanical

in a

or

0f

When

counter-

position,

direction from

PIay

control to the

(1)

by the

also moves

means

Record

or

downwards

disengaged

Assembly

with Rotary

Control

in

stud

in

slot

Rotary

the

operation

action

(64)

causes

the Equal-

BeIt

a

of

another

which

(101).

stud

With Escutcheons Removed.

NL-I

in

the Slide Plate

Release Lever Assembly

puII

the

(49)

the the

the

to PuIIey Belt

Rewind of the

neutral

(40A)is

through Record Control

pression

The cross

Brake

pressure brake shoes against

and

operation it

dimple

releases returned the brakes are

baII stud

of

the

venting

the Idler

(99)

(101),

and

A

third effect

Slide

reel

brakes.

position in avertical

slots

in

arm

Arm Adjustment

to the

Rewind

so that

the

to neutral

is

from

reel

any

When

for Fast Forwardoperation,theWind

(47)

the

slot

Plate

(64)

Take-up

BeIt

puII

to

Pulley

rnoves

BeIt

(47).

This movement

(94)

Wheel

thus driving

the Feed

allows

the

ReeI

the Idler

intocontact

Flywheel

Spindle

of the movement

(47)

Plate

the bottom

in

the

Cam

the

Control

of this assembly

brake

Slide

pulls

the

brakes.

reapplied.

such that the

which tape is being removed,

run

over

the

Rotary

the Equalizer

(97)

(100),

is

the application

When the Rotary

positionand Slide

(42),

the reel

Plate

the

Control Spring

a reverse

tape

to the right and

on

and

stud on the

Plate

and

fits intoa

Spring Plate

Screws

arms,

(7?)

which

seats.

moves

to the left for

control

When the

action

The action

brakes

spilling.

Bar

(3)

(88).

the outer

Control

the Take-up

forces

the

(47)

(65)

bears against

and

ball

Plate moves up

Rotary

are

is

causes the Tie

This

Pulley

of the Idler

(91)

Spring

the Motor

with

(?6),

the

Wind

Feed

and

(89).

of the

or release

Control

is in

the

Control BaII

studend

and

in

As the

stud out of

takes

turned to the left

and

projects

the PIay and

dimple

Assembly

(77A),

or de-

(6b).

applying

turn hold

Wind

Rewind

Control

of the

applied first

Rewind

surface

(3)

place

control

thus

tightens

(98)

and the

of

pre-

Slide

the

and

the

and

Bar

the

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Page

5

Figure

3.

Top View

NL-z With

0f

Escutcheons

Removed.

belt

against the Motor

Motor Pulley

forward

ment

(40A)

during Rewind operation.

returned

the Feed

spiIIing.

speed.

of the

Slide

is moved

to Neutral the brakes are reapplied first

ReeI, thus

For the

Control

tation backor

the

wind Control Record

turns,

pivot,

One

to release Plate

Arm

direction

the and

Movement

the by Assembly

or

(3)

is depressed

is then

recording.

upper

stud is disengaged

Slide Plate

Shaft assembly

Control

the

Record

acting

on three other

arm of the

the

Assembly

(41).

The

to bring

Capstan to drive

actuates

of the

Pressure Arm

its

spring

(1a)

(12).

drives

then

The brakes are released

Plate

right instead

to the

preventing

second mode

limited

As

(4?)

Cam

to

the

and a

engages a

(42).

Control

(42)

Cam

brakes and

(43)

and

Plate

Slide

the Pressure

the tape.

the Idler

(46)

to bear against

Release

Plate Assembly

Slide

Lever

to bring tle Pressure Plate and Pad

Pulley

(47)

(99).

the Take-up

but the

the Rotary

When

over

Rotation of the

ReeI

by the

Control

to

of

run and tape

of operation

before

clockwise direction,

Rotary

moves

the other arm

pushes

(44)

being rotated.

Control

from

the

stud

Wind

on the bottom of the

slot in

As

the

Rotary

(42)

Cam

parts

rotates about

at the

the control

frees the

against

Assembly

Roller

The Rocker Arm

Lever Assembly

which in turn is

the

(43)

Head assembly

is depressed

the PIay and

same

the Rocker

moves in a

(22)

at fast

move-

BaII

left as

the

Control

the

Rotary

play-

for

and

Control

time.

ball stud

Slide

against

pivots

frees

also

moved

Stud

Ro-

Re-

(3)

(48).

(11)

A third

Assembly is

sembly

actuates (54)

is

to

against

tension of Takeup

When

a reverse action

brakes

are

is turningat anygreatspeedand

is

slight.

Volume Control

Turning

creases the

back.

a

Volume

Turning

creases the

back.

The first

amplifier

Tone Control

The TONE control

the bass and

of

has no

but

first

few degrees

controls

which

effect

to free

(61)

for rotation.

the Lever

the Equalizer

the Rotary

applied

the

volume

Control

the

volume

CFF

switch.

(Model

effect

both the

of movement

the

(61),

forcing

(97).

BeIt

Control

of all

equally

(Model

NL-l)

VOLUME level

(Models

VOLUME

level

few

degrees

NL-l)

treble

frequencies

on the

of rotation

motor

of the

Takeup Adjusting

Takeup

these

for both

NL-2

for

Pressure

Takeup Adjusting

(88)

Bar

for

(3)

is returnedto

parts

to both reels

danger

control

recording

& NL-3)

control

both recording

of rotation

correct takeup

occurs, but

since

of tapespilling

clockwise

operate

varies the relative

during

tone

operate

and amplifier.

while

recording.

the

OFF switch

Plate

Slide

Lever As-

(5?)

Spring

Lever

Neutral

neither

play-

and

play-

and

strength

playback,

The

the

in-

the

Page

6

Tone

Control

The TONE control varies

the

of

but has no

first

few degrees

switch.

Record

Depressing the

the recording Control

position,

cording Rotary

,matically

Automatic

(Models

and treble frequencies during

bass

effect on the tone while

of

Lock

Button

circuits

is then depressed and rotated

the Record Lock Button wiII be

position

Control

is returned to neutral This

releases the Record

I ndex Counter

The Automatic

means for

tape. The

'Set

rotating

means ReeI

locating

counter

the counter to

reset

the

a

of

Flexible

Spindle

(89).

Figure 4.

NL-z

rotation

Record

&

operate the

into

operation.

NL-3)

Lock

and recording

Lock

Index

Counter

recorded

is used

zero

knob. The

Shaft

material anywhere on the

Models NL-z

on

at

the beginning of

counter

(103)

connected

Top View

relative strength

the

recording. The

MOTOR OFF

Button

proceeds

(33)

If

the

to

held

Button.

(32) provides

and

is driven by

to the

NL-3

0f

playback,

places

Rotary

record

in

re-

until the

auto-

NL-3.

reel

a

Feed

With Escutcheons

Automatic Shut-Off

tween

When

contacts

of tape

the

contacts wiII close.

with

through M5. The the

Switch

relay windings and

the drive

Automatic

a

Ieft of

Model

between

by

Thus,when the eventof

move

to

breaks

Removed.

The Automatic

the

tape is

of this

is reached,

The switch

motor

the

windings of

closes at

motor

and

erase

properly

switch. Thus,

or, in the

contacts of

circuit and are held

Shut-Off

relay

the end of a reel it

circuit.

Shut-Off Switch

Automatic

The

play-record

the

NL-3. When tape is

the metal

the end of

tape breakage, the metal finger is

into

the

motor

metal

circuit.

Switch

playback

the

Shut-Off

post

(Early

Versions)

Shut-Off

threaded it falls

Switch

heads

when the

event of tape

relay

Switch

(M5)

so

that when

relay

switch

(Late

Switch

and

erase head

properly

and the switch arm finger.

a reel

of tape

post,

opening the switch which

is located

on Model NL-3.

end of

(M5)

are in

closed by

parallel

is in

shorts

opens, breaking

Versions)

is

Iocated to the

threaded it falls

is

reached,

between

a reel

breakage,

series

current

the

Shut-Off

across

assemirly

or,

allowed

be-

the

with

the

on

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Tape Loading

1. Place

spindle

is

pulled

so that the

from the

And Threading

right hand

IJse

"A"

the

wind

a reelof tape on

reel wiII turn clockwise when

reel.

OPERATI

tape

(supply)

that

-

NG I NSTRUCTIONS

tape that

be

tape

is,

can

half twist

a

through

is

wound coated

easily changed

before threading,

Fast

Forward

to

or

inwards.

side

rrA?r

wind by

Rewind

"B"wind

giving

and running

operation.

tape

the tape

the

tape

Page 7

O I

rfl

n

2. Place anempty reelon

spindle.

on the

a

into into

Turn

the tape

between reels.

To

I'Volume-On-Off"

Model NL-1 this

but on Models

"Tone"

seconds before

To Record

jack.

tape movement is

Lock Button and adjusting the per

levels are as

Make sure that bothreels areproperlyseated

reel rests.

3.

Reel out

section straight

the tape

one of the

reel

the

to the reel

Turn

0n

a

convenient length

with both

and thread

slot

in the hub

slots

by hand until

and

Amplifier And Motor

Prepare to record or

Control

and

also

NL-3 the

control

NL-2

mustalsobe

Allow the amplifier to warm up for

proceeding

From Microphone

1.

2.

Insert

therecord level. Thiscan bedone before

Set

microphone

the

started

response

(a)

volume

the

from the

follows:

Model

signal

indicator.

NL-1

so that the

level

cause the Iamp

theleft hand(take-up)

of tape

hands.

Drop this section

free

the

of the take-up

several turns have secured

aII

slack has been taken up

playback

to the

"on"

turns on the drive

motor

turnedto

record

to

the

or

plug

by holding down

Volume control

The

(Neon

Bulb)

loudest

and hold

end of the tape

reel,

by turning

position.

Motor,

switch on

position.

"on"

about

playback.

into the

proper

--

"Mic"

Record

the

pro-

for

volume

Adjust

portions

to flash inter-

On

the

mittently.

(b)

Model NL-2

volume level

the signal

(c)

Model NL-3

volume

flection do not

area

of dial

Hold the

3.

the

Rotary

Control

corder in motion.

Rotary

Control

to neutral. The Record Lock Button

just

level

Record Lock Button

When

(Magic

that the loudest

so

cause the eye to close.

(VtJ

that

so

go

t}re

past

Eye)

Meter)

peaks

zero,

calibration.

to

right,

the

through

thus starting

recording, turn the

-

of

into the

or

down

Adjust the

portions

Adjust the

meter de-

red

and turn

re-

the

will automatically release and deactivate the record

circuit.

To Record

tuner,

recorder.

the

phone",

From Radio, TV,

1.

Connect

TV, or

the

phonograph

output signal

2. Proceed as under

step 2.

Phonograph

0r

to the

"Radio"

Record From

"To

from

input

the

radio,

jack

Micro-

30

To Play

A

Depress

1.

Recording

Rotary

Control

and turn it

to the

right.

2. Adjust

desired Iistening

Dual

Track

These recorders

half

sulting

recording

tape

the

in dual-track

"Volume"

quality.

Recording

width is recorded

recording.

proceed

as follows:

1. After a reel

all

Rotary Control

the full Place the empty

tape

the

wound onto the

in neutral

2.

Remove the reels from the recorder, turn

reeloverand

reel

3. Thread the

cording.

4. After the

f ir st track

reels

and

To Erase

of

recordings as new recordings

is desired to erase set

microphone or other

of

through the Control

To

Use

"SPKR".

disconnects the internal plugging

with the

To

Use

input

one

further equalization for

To

of

Use

can microphone into the RADIO

c

on the spindles as in

placing

Recordings

These

all

controls

at zero.

An External

Plug

On Models NIr2

in an

internal

An External

Connect

of t}te external amplifier.

designed

As A

Anyof the Model

used as a

be

second track has beenrecorded

played,

an

be

the recorder

recorders

without

as

if

program

machine.

Speaker

the external speaker into

external

speaker.

Amplifier

recorder

the

accept

to

P.A.

System

public

and

"Tone"

are

designed so that

at

To

of tap.e has

take-up

position.

place

itonthe right-handspindle.

on the left-hand

proceed

and

tape

without rewinding, by trading

rethreading

step 2,

in

Playback operation.

automatically

are

recording

For

but do not

source, and run

best results,

and

NL-3 this automatically

a

time,

make a

recorded,

been

reel,

spindle.

erase

being

nevr material,

the

controls

thereby

with the re-

made.

plug

set Volume

jack

speakers. On Model NL-l

speaker

a high level

flat

NL-1, NIr2,

address

places

jack

marked"AMP"to

This

signal requiring no

playbacl{

input

response.

NL-3 recorders

or

system by

jack.

it in

input

dual-track

plugging

for

only one-

re-

i.e.

place

the

thetape

in

the

the tape

marked

parallel

the

should be

a

Equal

izer

Adjustme nt

Bar

MECHAN

I CAL

This adjustment is made by loosening Socket

Screw

(2?)

and shifting the Equalizer Bar

Head

forwardor backward. Make the adjustment as follows:

Page

8

(88)

ADJ

U STMENTS

First, remove

(2).

movetlre Equalizer

Take

any

the

With

-Up

Spindle

pressure

the

(93)

Bar

is

Spindle Caps

Control

(88)

on the verge

Rotary

being exerted

(1)

(3)

to a

on the Equalizer

and

in neutral

position

of spinning

such that the

ReeI Rests

position,

without

(88)

Bar

from

the Tie Bar

sure the The Equalizer Bar

justed

mechanism

and

ment acts

Tie

Bar

movement of the Elastic

stop

ward and function freely equalizer

socket

by turning

Iock themdownwith

as a

Pressure

Bar

amount of

The

(88),

by

nuts

should

Rewind

bar

formance. test the Rewind with

To

side.

NOTE:

Takeup

Take-Up

closer

sure on

up.

gives give

for

test

The

the Equalizer

Adjustment

adjustment

This

Pressure Spring

to the

the equalizer

Bending

a

weaker

adequate

(64).

head screw

Adjustment

both screws

plate.

Then

stabilizer

Adjustment

pressure

means of the

adjusted so

be

positions

and

still

adequate Forward

for

determine if

To

Wind

Tie Bar

Equalizer

the spring

results, loosen

a full 7" reel on the

place

(64)

Bar

bar

take-up.

is

&

lfi

,1 U

,l

. x

\

i?i

L;u. t

trr

Figure

adjustment is

After

(27)

is tightened

Screws

down until they

back the screws

Lock Nuts(78El). Thisadjust-

for the equalizer

exerted

Tie Bar

Nuts

Stop

exert enough

the

must

accomplished

as

the Rotary Control

on

performance

fuII 7" reel

readjusted wheneve?

be

(88)

is adjusted.

(54).

(88)

Bar

giving a

thus

away from

If bending

the screw which

5.

(778)

off 1/4

bar.

on the

(64),

to

Bending

increases

the

adjustedby

is

(79).

The

allow the

pressure

and

Rewind

is

the

on

bending

by

stronger

the equalizer

spring

Bottom View

made be

securely.

are ad-

hit

the

turn

Equalizer

elastic

For-

on the

per -

adequate

side.

feed

take-up

spring

the

pres-

the

take-

bar

does not

mounts

the

2p

lll

f

rl

.,

P=

56

?z

Mechanism.

TM-I

0f

the spring

for optimum

Brake

the

reel of tape on the

5"

reel on

on to

from

Adjusting

and move the

Adjustment

After

brakes

the take-up

7" reel.

the

"Rewind"

Screw

adjustment.

equalizerbar

are ready

to

revolution without

procedure

up

to

side

just

feels

the

stop

revolution.

and an

side

about 100' of

into"Rewind".

rectly

empty,

should

reels

spilling

full

the

of

100'

Forward" place

the Rotary

should

After the brakes

tape.

and

up affected,

take-up, Readjust

placing

by

and

the empty

Brake

Right

in

"Fast

tape

place

the Rotary

stop

tape. Next, reverse the

7"

reel

on the take-up side

tape

on

the

until the

in about

stop

rewind.

readjust. If it is difficult to

the brakes

the brakes to

spring

adjustments have beenmade

adjusted. First

to be

feed reel

side. Wind

While operating

"Neutral",

(77)

until

spilling

the

Adjusting

Forwardfi

put

a

on to the take-up

When the take-up

in about

feed reel.

feed reel

Control

3 or

tighten

the

tape. Next,

reel

5"

7" reel

full 7" reel of tape on the feed

on the

Control

3 or

is

in

4 revolutions

are adjusted,

If the take-up or

mayhave

beenadjusted

rectify this

proper

in the

and an

side,

about

t/4 of

the

Rotary Control

the Left

reels stop

reverse thp

of tape on

feed

on the

(77A)

Screw

to

Neutral"

take-up

reel,

then

reel isalmost

in

"Neutral".

4

revolutions

procedure

rewind about

and

direcUy

Go

almost empty.

"Neutral".

without

check

rewind

get

condition.

direction

put

a full

empty

the tape

Brake

about

in

the take-

side.

so that

in about

side. Run

go

without

placing

by

into

"Fast

Then

reels

The

spilling

the takehas been

adequate

tootightly.

7"

Ad-

the

di-

The

1

z=

iI-

ogl

' ltl

IF

g)la

?z

{F

t+

.-

I

Dr\

.Tt

o

I rtl

n

o

i.

g/!

Page

9

ldler

And

(Models

Speed

position

the

perimeter

meterof

not

idler

Speed Change

NL-2

Loosen

Change Shaft

of idler

of the ldler

the Motor PuIIey(99).

ride

on the

channel

tical direction

that

the shaft has

sector

Lever

Knob

Play-Record

no Ionger

(26).

If necessary

(24)

and reposition

Adjustment

NL-3)

&

the set screw and nut

(69)

to Idler

channel assembly

Wheel

edge of the motor

has

on the speed

Head

positioned

been

not rotated so engages the slot

loosenthe

the

Alignment

Channel

(94)

The idlerwheelshould

change shaft, check to see

that the

Speed Change Sector

which secures the

(?0).

Adjust

on the

After the

in a

speed

Speed

the full

peri-

ver-

change

Shi-ft

Shaft

(25).

so that

rides

pulley.

correctly

in the

Speed Change

5.

Tighten the head

the

Axmur-X

of

household

Record Level

The

the maximum undistorted

set at

the

When

justment

1.

(usually

adjustment

cement.

lndicator Adjustment

neon

lamp

on

factory,

it may require

this becomes

procedure

is

suggested.

Allow the recorder

about 5 minutes).

mounting

screw

your

with a small

tape recorder

recording

a

minor adjustment.

necessary,the

to thoroughly

screw and

(Model

level, and

following

seal

amount

NL-I)

indicates

although

ad-

warm up.

The PIay-Record

azimuth

angle

when the magnetic

with the direction

Head is

of tape travel. One

correctly aligned for

gap

is at an

ways for making an azimuth adjustment

of analignment would be

for

maximum

judged

is as

by ear. The use

follows:

1.

and

set it for

2.

the slightest amount,

this screw as

tape and a meter.

play

to

back a recording

high frequency

of

Connect the

a low AC

Loosen the record head mounting

meter

so that the head

a

center, but

voltage

A substitutemethod

and adjust

the

"AMP"

range.

in

tape

may

content

alignment

to

cannot slip up or

vertically.

3. PIay the alignment

X

spring loaded

meter.

4.

not

pole

at

Check

been

disturbed.

piece

the

same level as

must

screw for

to see that the height

be

lined up

The

center line

the tape

tape and adjust

maximum

of

so that

guides

the

and tape.

right

exact

best

of the

is

by means

head

the

the output,

and meter

output

screw

pivot

the Azmur-

output on the

the head has

the head

pole

as

jack

just

about

down

and

piece

PARTS

jack

o'clock and makea

rophone rophone at a

bulb

voice,

ing

quate

increase the

but slightly decrease

is

procedure

fore

REPLACEMENT

2. Insert a

hole.

3. Set

4"

4.

Slowly

just

flickers

To check the above

to see that the

and

not distorted

playback

If

playback

If

Depending

may

desired

the

thin screwdriverthrough

the volume

6r' from

to

normal

turn the

at

is

volume

is

on the individual's

have

recording

control

normal

the mouth.

conversational level.

at

recordingholding

Speak into

screwdriver until

peak

the

level

weak, repeat

setting,

of

at

normal

or loud

playback

listening

step 4

control.

loud and

the

to be repeated

distorted, repeat

volume control.

several

level is

obtained.

the

"AMP"

approximately

mic-

the

mic-

the

neon

portions

is

the

your

of

the record-

entirely ade-

levels.

but slightly

step 4

voice the above

times

be-

2

How

To Replace

Remove

mounting

pole piece

screw

driver

prying

and

The

new

A

Pole

the head assembly

screws

is

pole

then

between

pole

the

piece

which

removed

laminations provided

After

ed

assembly

aligned.

How

screw

give

the head

the

screw

Page l0

pole

the

from

the

is

To Replace

Remove

(6)

and the

access

plug

Azmur-X

(see

piece

sides

with

then screwed

A

Play-Record

the

#6-32 Phillips

Head

to the heads.

socket

adjustment

Fig. 6).

Piece

hold

down

by inserting a

the head

piece

by breaking

is

then inserted

for

each leg

position

is

in

household

into

Cover

Unsolder the head

at

or

the

screw and

The head

can now

by loosening

the assembly.

non-magnetic

can and

the

between

of the

it should

cement.

place

and

Head

OvaI Head

Casting

terminal

(5).

lugs.

the head mounting

be replaced.

pole piece

joint.

glue

the

pole

piece.

be

cement-

head

The

the heads

Mounting

This wiII

leads at

Loosen

the

The

two

The head should

replacement.

AZMUF

Figure

How

Screw

Replace

To

Remove

(6)

and

the

the Head

be aligned

-X

for

correct

6. Head Adjustment

A

Pressure

#6-32 Phillips

Cover

Roller

Oval Head

Casting

aximuth

Points.

(5).

Remove the

after

Mounting

Figure 7.

Bottom

View

NL-l Mechanism.

0f

2t

Frn

P=

,F

rsO

th,

1t-

z=

I.o

.og

-

lr

(.ria

la

{z

{F

t+

.-

lgD

{E'\

ltt

i.

Figure

8.

Bottom

View

0f

NL-l

With

Motor

Mtg.

Plate Removed.

Page

"n

C)

I

t-f1

n

ll

Figure

9.

Bottom

View

0f

NL-z &

NL-3

Mechanism.

Page

12

Figure I0.

Bottom

View

0f

NL-z &

NL-3 With

Motor

Mtg. Plate

Removed.

crescent retaining ring

roller.

washer

side pressure

off

the

the driving hinder the

How To Replace An

out access

(92)

clock steel stud.

stall idler

to

Motor

How To

taining

Spindle Caps

ing

Clean the

(23)

bottom of

roller

anyexcess grease

crescent

Remove

a dry

with

the

on the

retaining

surface

operation

the

the4 #10-32 machine

to the Idler

forward

Clean

get

any

On Model TM-1

(5).

and slip it off the shaft, then remove the

washer

the stud before installing

wheel

grease

Support

Replace An Equalizer

output

Loosen the set screws on feed

on driving

plate.

jacks

(1),

ReeI Rests

puUeys, (Remove

Models

from

and

move

and

removed and

washers and lubricate

bar.

Equalizer

How To Replace A

Remove the 3 nuts

NL-2 & NL-3). LiJt out both

top of unit and remove the

spacer

Equalizer

(80)

from the

socket head screw

Spacer

replaced.

After new baris installed follow instructions for

Tie

Bar,

Place

Rotary Control

(21)

and

pressure

roller

lift off the

stud

cloth. Apply

pressure

new

pressure

at

the topof the

ring, Do not

pressure

of the

of the machine.

roller.

roller

get

roller

ldler Wheel

Motor Support Plate

screws

Wheel. Slide

and

the Idler wheel from the

in reverse

first remove

and

flexible

(108). the Idler

order, being careful

surface of wheel.

Bar

the back

slide switch. Remove

(2)

and

llead Cover Cast-

shaft on feed reel spindle,

elastic

end of the Tie Bar

(2?),

Equalizer Pivot

(8?).

Equalizer bar

aII bearing surfaces and

Clean

properly

Bar,

before replacementof

and

Brake Adjustments.

Motor Assembly

(3)

in

(?3)

and

Neutral

washers which

andclock steel

grease

stud

roller.

any

(10?)

This will

a

new ldler.

reel

pressure

to the

Put the

and

Replace

grease

as tlis wiII

taking

by

Spring CIip

Idler

Replace

plate

and

take-up

spindles

stop nut

(64).

Stud(90),

then be

can

position.

hold the

in-

new

wipe

on

give

In-

not

con-

the

(79)

Re-

Motor

off the three

make

up

How

most facing

first.

assist the action Then remove the belt slipping Support

verse order. Make

side of

by

Support

Pulley

and

Pulley

The Equalizer Bar and Tie

ment after the new

How

leads and and NL-3 the head basic

ed. The flexible

NL-3. The

pulley moved before

and screws Feed

ed. Make sure

on the outside.

sure that Motor

the studs.

Plate

to the rubber

mounting

sure that

(9?)

belt

To

Replace A

motor

as

shown in

Take-Up

The removal

easily accomplished

up.

SIip

the

Start t}te belt up

by turning

the

beltup through

(10?).

Plate

belt

working

thenslip

sure that the lettering is

it up through

Plate. PulI

(99)

and work it

motor mounting

the

(98).

SIip the belt

belt is installed.

Replace A

To

Turn the

the flexible

Feed

unit upside

leads

TM-l mechanism

shaft

belt can now

but

the

Motor the

belt

(108)

Assembly

and remove

Capstan

Beltcan now be

that new

Reassemble

Support Plate is

studs.

pulley (99)

the exploded

and replacement

belt

from the

Replacement is done in

the beltover

the

up between the

Belt

shaft.

they

is used

Support Plate

can be taken

(76).

the

completelyremoved

belt is

shock mounts.

When

is

Belt

if the back

off the take-up

over the

the

edge of

take up reel

BeIt Pulley

clearance in the Motor

Li.ft motor

replacing motor

outside the take

view.

probably

can

unit

of the

pulley (98)

pulley

seat by hand.

(100)

the

on the in-

[tre Belt PuIIey

the

belt

clearance

around

in

the Motor

under the

Motor

stud, towards the Take

over the

Bar may

down and

On Models

can

be unplugged

will

on

removed

be

Remove the

Motor

installedwith

in reverse

Take

require

remove

need

to be unsolder-

Models NL-2 and

from

(10?)

off

Support Plate.

properly

Pulley.

Up

readjust-

the head

NL-1, NL-2,

but on

the feed

must be re-

the Flywheel

four

and

replac-

lettering

order, making

seated

be

is

and

by

re-

(100)

Motor

Pulley

Up

the

#L0-gz

The

on

2t

Fln

$=

*r6

lA=

\l-

z=

io

g

-C.l

-t IF

g)

I,l

la

\z

{F

3.l

+r.

rgD

A\

Although

factory,

lubricated

part

grease

specified.

grease

replacement

in order

needs

is

specified or

The following

or a

1. Play-record

2.

Wind-rewind slide

3.

Control spring

4.

Control

5.

Slide

6. Pressure ?.

Belt

8.

Tie bar

The recording

(?6),

and the

accumulation

this mechanism

to insure

more

than a

parts

similar

compound:

cam

BalI shaft

plate

assembly

roller

of

parts

slight

one

(65).

require

bearing,

prelubricated

is

requires

proper

film

drop

(42).

plate (4?).

(40A),

(a?).

that they

functioning.

grease

of

oil

where

greasing

bottom

(22)

and

with

end.

(3?).

pulley (100).

(64),

front

end.

pressure

of tape coating oxide which'is worn off

roller

and

erase

(22)

heads,

the capstan

are subject to an

LUBRICATION

at the

be

No

where

oil is

fibre

CLEAN

9. Idler

10.

Record

11. Equalizer bar

12. Take-up adjusting

13. Pressure

14. Pressure

The following

lubricating

oil:

1. Feed spindle

2. Take-up

Flywheel

3.

as it

a

soft cloth

Do

solvent.

oiled, ings

essary.

CAUTION:

I NG

the tape with

running time.

wheel bearinC

lock

(33).

pivot

arm lever finger

carrier assembly

parts

assembly

spindle assembly

assembly

not

clean oilite

Oilite bearings are

but in

appear

passes

and

some

dry a drop

these

alcohol after

(94).

(90|.

stud

(61).

lever

(44).

require

(?6).

parts.

oiling

(89).

(93).

bearings

cases where the

of

oil will be nec-

Clean these

every

(3?).

with

10W

with cleaning

permanently

bear-

parts

ten hours

Page 13

c)

I trl

of

F \t

HEAD

MODELS

ASSEMBLY

Ttvtl, NL-I,

FOR

& NL:

COUNTER FOR MODELS

NL.z

AND NL-3

Page

14

Figure 1IA. Exploded

View

0f

Parts

Above

A PHOTOFACT

Mechanism

@

Howard

Plate

W, Sams

"EXPLODED"

& Co,lnc.

1958

VIE\Y

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INDUSTRIES

Exploded

GENERAL

MOTOR

View

0f

Parts

Below

FASCO

UNIVERSAL MOTORALLIANCE OR

Mechanism

OR

Plate

Page

15

.Tt

o

t(3

trt

n

N

MECHANICAL

TROUBLES AND

PROBABLE

REMED

IES

SYMPTOM

No rewind.

FLutter.

CAUSE

l.Glazed idler

2.Faulty

3.Idler

flywheel

4.Idler

tie bar

wheel

or motor

wheel

(94).

wheel

(64)

adjustment.

(94)

slips against

pulley.

(94)

not adjusted

properly.

S.Binding

6.Draggingbrakelinings.

not adjusted

?.Warped

8.Feed

l.Motorpulley (99)

to motor

2.Excessive

feed reel

reel

(101)

belt

shaft.

spindle

properly.

(2).

rest

loose

not concentric

take-up.

or broken.

(89).

Brakes

REMEDY

1.Rub off

2.Adjust

justment".

3.Clean idler

alcohol. If

4.Adjust as Adjustment".

S.Remove

bearing.

soft cloth.

6.Adjust

ment".

T.Replace

S.Replace.

l.Replace

2.Adjust as described

glaze

with a

as described

wheel, flywheel,

idler

wheel

described

ring

"E"

Clean bearing and

brakes as

reel rest.

motor

and

clean,

under

still

under

(8b)

and remove

described

pulley

assembly.

under

"Take-up

dry,

"Tie

and

slips,

"Idler

spindle

under

lint free

pressure

Bar

motor

replace.

And

Speed

spindle from with a

"Brake

Adjustment".

cloth.

pulley

Change

Adjust-

Ad-

with

clean,

Wow.

No

Wind

ward).

Tape

spillage or

sufflcient

(Fast

For-

in- l.Faulty

braking.

3.Take-up

belt

(97)

Properly.

4.Dirty

l.Foreign matter

2.Defective

3.Defective

4.Reel

(94),

(76),

flywheel

pulley (99),

motor

or take-up

idler

pressure

spindles

bearings.

on idler

pulfey (98),

wheel

(89)

ing.

S.Brakes improperly

l.Binding

2.Takeup

or

take-up

belt

broken.

brake adjustment.

(97)

spindle

loose,

not

installed

wheel l.Clean

flywheel

(94).

roller

and(93)

bind-

adjusted.

(93).

twisted,

3.Remove View".

4.Clean bearings and

cloth.

2.Replace.

(22).

3.Replace.

4.Remove

spindlesfrom

with

S.Adjust as described

l.Remove

spindle with

2 .Replace belt.

l.Adjust brakes as

ment".

and

with a

"E"ring

a

clean,

"E"

from

a soft,

replace

flywheel

and

cloth

(85)

bearings.

soft cloth.

under

(85)

ring

bearing.

clean cloth.

described under

belt as

alcohol.

on

ontop

shown on

shaft with a

top of spindles

Clean bearingsandspindles

"Brake

Adjustment",

"Exploded

clean, soft

and remove

of spindle and remove

Clean bearing and

"Brake

Adjust-

spindle

Page

16

2.Worn brake linings.

3,Wornoutorloosecontrolspring

(65).

4.Excessiveplay

inequalizer bar

(88).

2.Replace

3.Adjust

4.Readjust equalizer

linings

and readjust

or replace

izer Bar Adjustments".

brakes.

control spring.

bar as described under

"Equal-

ELECTR

ICAL TROUBLES

AND

PROBABLE

REMED IES

SYMPTOM

high

Poor

response.

No erase

or

No

on

recording.

weak

erase

top

record.

of

Distorted

play-back

-

o.K.

frequency

--

distorted

records

-

function

CAUSE

1.Play-Record

aligned

2.Wornpolepieceon

head.

1.Bias-Erase oscillator

ing.

l.Defective

cuits.

l.Improper

2.Defective

head improperly

PIay-Record

head or cir-

erase

recording

microphone.

STEREO PREAMPLIFIER

not

level.

work-

l.See

"PIay-Record

2.Replace

l.Check

necessary.

if

l.Check

2.Compare

-

circuits

operation

adjustment

BOTTOM

pole piece

oscillator

for level

microphone

with

VIEW

REMEDY

Alignment".

Head

realign

and

and oscillator

tube

replace head

-

level

of

indicator

for azimuth.

coil.

if necessary.

indicator. Check

(Model

known

to be

NL-1).

good.

Replace

setting

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Figure

19. Front

View

0f

NL-3

Amplifier.

Ref .

No.

1

2

3

4

5

6

7

?A

Part

No.

7L4A-276-1

7t4A-276-2

?658-12-1 ?6588248-17-1

824wt1-2

7r4A-276

824V13

B24YL3-2

611-61633

964A -37

-90

964D

964A-371

-372

964A

76

LD-47

I

761D -49

-48

76

lD

-90

761A

ReeI

Spindle

Reel

Spindle

ReeI

L2-2

-1

4

Rest

ReeI

Rest

Control

Speed Shift Lever Knob Head Head

#6-32 x Top

Ass'y.

Top

Ass'y.

Top

Ass'y.

Top

Ass'y.

(net.

7C, Top

Top

Knob Knob

Cover Cover

1 Phillips

Cover

(Model

Cover Casting

(Model

Cover Casting

(Model

Cover

(wtodet

No.

7D)

&

Trim Trim Trim Trim

Descr iption

(Gray)

Cap

(Brown)

Cap (Gray) (Brown)

(Gray)

(Brown)

Casting Casting

(Gray) (Brown)

O.H.M.S.

Casting & Trim

TM-1)

Trim

&

NL-l)

& Trim

NL-z)

Casting &

NL-3)

7 Includes

Plate Plate Plate Plate

Trim

Items ?A

(wtodet

(Model

MECHAN

Plate

,78,

TM-1) NL-1) NL-2) NL-3)

ICAL PARTS

.

Ref

No.

7B

7C

7D

I I

l0

u

UA

uB

ltc

llD

12

r2A

L I ST

Part

No.

824D-2-L

B24D-2-2

6

19

-48

-498

7 1 1A

-40

532A

6L2-60464

711D-62

-708

7

1 1A

711D -62

-64

71lD

963C-11

-56

964C

9648 -I32

-57

964C

9648-134

-L2

963C

-8

983A

-54

964C

Description

Top

Cover

Top

Escutcheon

Cover

Motor

#6-32 Top Top Top Top

Head

NL-1,

Casting

Cover

Casting

Drive

CIip On-Off

x

L/4

Switch

Hex.

Cover Panel Cover Panel Cover

Panel

Cover

Panel

Assembly (Models

NL-2,

& NL-3) Reeord-Playback Record-Playback

Double Double Stacked

Erase

TM-4,

Stacked

lombination

ilead

Models

ln exploded

Gap Erase

Erase

Gap

Stereo And

Assembly

Head

NL-IS,

Stereo

(Used

in

TM-1

view.)

NL-2S,

Head

Record-PIay

early

&

(Gray)

(Brown)

Hd.

(Model

(wtoOet

(Model

Head

PoIe

Head

PoIe

Double

production

NL-l.

(Model

SeIf Tap.

TM-l)

NL-l)

NL-2) NL-3)

TM-l,

Piece

Gap

(Models

& NL-3S)

-Eras

Not

shown

TM-1)

Screu

e

for

TI

O

f-

tr7

rT1

n

N

Page

27

Ref.

No.

28 29

30 31 32 33 34 35 36 37 38 39 40

40A

4l

42 43 44 45

46 47

48

49 50 51 52 53 54 55 56 57

58

59 60 61 62 63

64

Part

No.

9648-90

-80344

611

-335

964A

81LA-22

619-144 611-20314

-334

964A

813A-11

-333

964A

742A-35

8

-10

13A

619A -148

-1

964A

7LAA-47

6 16A -3

16

169

?64A-?8

-?07

? 11A

-339

964A

-

6 13

10896

-

134

617

1

616-1144

-146

6 19

-24

16A

6

-2

498A

814-59

-31

?34A

-1

964.A

-3169

6 16A

7L2A-18 964A-340

964D-35

-34?

9644

-268

964A

7 1 1A -?09

-130

9648

-23

964A

?114-330

6 14-6084

7L2A-15 ?118-164

-51

964C

9648-131

-47

619A

? 118-161

-8

6 16

124

611 -60454

lLtA-120

-338

9644

-80

?12A

-5

712A

?1XA-6

-209

? 11A

-50313

611

-129

964A

613-60496 617-6094

-29

964A

Description

PoIe Piece

Record-Play

#8-32

Pressure

FeIt Pressure

.125

Crescent

#2-56

Carrier

Stud, Phenolic

Carrier

(For

combination

-Erase

x

3/16 F.H.M.S.

Plate

& Pad Assembly

Pad

Retaining Ring

x 3/16 R.H.M.S.

Bracket

Assembly

Rod

Plate Assembly

Head)

Cut-Off Switch Spring

Spacer

.25

Crescent Retaining Ring

Capstan Pressure Roller Capstan Pressure

.25 x .5 x

Speed Change Shaft Speed Change Sector

Speed Shift #LO-32

Screw

#10 .203 x .438

Washer

.01

x 1,/2

Ext.

Tooth Lockwasher

Roller

Clock Steel

Knob

Lever Assembly

Soctet Hd. Mtg.

x .031 Flat

3/16" Crescent Retaining Ring

.19 x .38 x .01

Counter

Clock Steel Washer

(Models

NL-2

Record Lock Button

#4-4Q x 1 R.H.M.S.

Flat

Washer, Steel

Tape-Post

14

Pressure Pad

.5x.01

.25x

Carrier

Clock Steel Washer

Compression Spring

Mechanism Plate

(Model

Mechanism Plate

(Model

Mechanism Plate

(Model Control

TM-1)

NL-1

NL-3)

Assembly

&

Rivet

NL-2)

Rivet

Rocker Arm PIay & Record Control Cam Slide Pressure #6-32 screw

Arm

Hex. Nut

part

613-60464

#

Lever

(Some

Assembly

Plate

application)

Pressure

Wind &

Finger

Rewind

Spring

Slide

Idler Release Lever

Control Shaft

Detent

Brake CIip

.16 x .38 x .03 FlatSteel Washer

x

#6-32

Take-up

Spring Ring

Idler Lever

Take-up Pressure RoIIer

Idler

Stop

x 3/16 R.H.M.S.

#5-40

Take-up

x

#6-32

Int. Tdoth

#6

1

Tie Bar

Assembly

Spring

1/4

B.H.M.S.

Adj.

Lever

Assembly Spring

Pressure

Plate

Spring

Adjusting Lever Assembly

1/4 Socket

Hd. M.S.

Lockwasher

Assembly

MECHANICAL PARTS

Shaft

Washer

Steel

& NL-3)

Assembly

Ass'y.

Models

use

in this

Plate

Assembly

LIST

-18

764A

7 14A -530

68

t619A-20

69

714A-336

I

?0

l?114-343

7t I 617-8114

72

616-7209

I

?3 I 614-8114 75

964C-60

I

?5A I881.A-52

?6

9644-26?

I

11

611-81664

|

??A I 611-81664 7?B

611-81664

I

78

614-8114

|

?8A I 614-8114

?88 I 614-8114

615-1124

?9

I

80

712A-60

I

81 I 611-80454

82

11428-r

83

964C-59

I

881A-52

83A

I

84 l8?1A-23 85

6194-20

I

86

616-7209

I

87 I 7L4A-478 88

9648-19

I

89

?144-463

I

90 I ?144-183 91

7L2A-79

I

92

1711A-346

93 I 1L4A-462 94

9644-130

I

95

964A-139

I

96 I 613-80306

9? I 899A-3 98

t964.A-91

99

?14A-16?

I

7t4-L74

100 101

toz

103 I 529A-16

107

108

109 110 111

Lrz

113

1L4A-t7L

I

899A-2

I

?14A-491

|

835A-6

711A

6 164

9648-20

I

? 118

611-10454

I

616-1240

I

711A-649

I

367B-8

I

71?A-20

I

3678-15

I

-597

-9209

-?5

Description

Contro

Spacer

Speed

Spring Plate Assembly

Change Shaft & Arm

Assembly

.313

Speed Speed Change Idler

#8

.63x

#8-32 #8-32 x

Left

Brake

Flywheel

#8-32 x #8-32 x #8-32 x 1 #8-32 Hex. #8-32 #8-32 Hex. Nut.

#10-32 Elastic

Compression

#8-32

some models)

Brake

some models)

Right Brake

Flywheel

.313

.63 x .31

Equalizer Equalizer

Feed

Equalizer

Idler Idler

Take-up

Idler

#8-32 x

Take-up

Take-Up Pulley

Motor Pulley Motor

Ring

"E"

Change Shaft

Int.

Tooth Lockwasher

.31 x .01

Clock Steel Washer

Hex. Nut

etten

3/8

Arm Assembly

Brake

Cork Pad

& Capstan Assembly

1 Hex. Hd. M.S.

1 Hex. Hd.

Hex. Hd.

Nut.

Hex. Nut.

Stop Nut

x

Pivot

Spring

1/4 B.H.M.S.

Spring

Brake Arm Assembly

Pad

Cork

Washer, Felt

Ring

"E"

x .01

Clock

Spacer

Bar & Bearing Assembly

Reel

Spindle

Pivot

Spring Spring

ReeI

Wheel

Bracket

Stud

Clip

Spindle

Sub Assembly

3/16 etten

Belt, .3125 x

Assembly

(60

Pulley

(50

BeIt Pulley

Feed

Belt, .3L25

Rewind

Flexible

Pulley

Shaft

(Models

NL-3)

Cable

Clamp

(Models

NL-3)

Cable

Clamp

(Models

.377 x .625

Washer

Motor

#10-32

.203x

.75x .047 Motor Alliance

General

Motor Motor Fan

Fasco

Universal

Support Bracket

NL-2

& NL-3)

x .01

Support Support Plate

x 1/4

Plate

Plate Assembly

B.H.M.S.

Steel Washer

Motor

Industries

Fan

witfi

Set Screw

&

Grommet

Motor

Channel

Hd.

SetScrew

M.S. M.S.

(Not

used in

Steel Washer

Hd.

Set Screw

12.625

Cycle) Cycle)

x L1 .25

NL-2 &

NL-z

Clock Steel

Motor

Assemblv

used in

&

Page

28

Pentron NL-1, NL-1S, NL-2, NL-2S, NL-3 Schematic

Specifications and Main Features

Frequently Asked Questions

User Manual