Roberts 192-FT Service Manual

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ROBERTS

MODET

I92FT

TRADE

MANUFACTIIRER

TYPE SET

powER

The listing

constitute

by Howard W. Sams & Co.,

such replacement

of

compiled from information

Inc.,
cQ5i4

of any available

case a recommendation,

in any

part.

the manufacturers of the

by

NAME

suppl,y

replacement

Inc., as

The

numbers of these

furnished

Roberts

Roberts
AC Operated

(Units

I05-I20volts AC,

W.

SAlYlS

part

warranty or

quality

to

the

to Howard W.

particular

type

192FT

Model

Inc.

Electronics,

STube-lTranslstor, Single

available for

are

does not

herein

guaranty

and suitability

parts

have

Sams & Co.,

replacement

of

5920 Bowcroft

,

60Cycles RATING

(G

O.,

&

been

Los

Street,

Monaural

2-track monaural operation)

Track

60watts,

35Watts, .33Amp

I N G.

part

listed. Reproduction or use, without express

editorial

patent

contained

tion

Indianapolis

pictorial

or

liability is

6, Indiana.

.58Amp'oUTVAC

tndianapotis

content, in

assumed

herein.

Angeles,

California

Recorder

Tape

(With

Deck)

(Amp

@ll7vAc

Only)

€i, tndianaHCDWARD

manner,

any

with

respect to the use of the informa-

Howard

01963

W. Sams & Co.,

Printed

in U.S. of America

DATE 3-63 SET

permission,

prohibited.

is

Inc.,

622 FOLDER

No

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of

SPECIFICATIONS

FRtrOUENCY

40

cps

SIGNAL-

55

WOW AND

Les s

HEADS:

FuIl-track

housing.

Remove lid from carrying

l.

t

Remove microphone and

storage

case.

RESPONSE:

to 15,000

at

3 3/4

TO.

NOIS E RATIO:

db

below

FLUTTER:

than

0. 1B7o rms.

erase

compartment

cps
ips

recorded

at ? l/2tps

db.

+ 3

Ievel.

"0"

record/playback

and

case.

AC

left side of earrying

on

db; 40 to 9,b00

*2

supply

cord

in shielded

PREPA

RING

from

OUTPUT:

REEL

POWER

SIZE:

WEIGHT:

FOR

3. Make

6 watts undistorted.

SIZE:

?"

maximum

REQI]IREMENTS:

95

to 120

15

3/4" xt4 t/2"

Approx.

OPERATION

certain

sition.

(up

to 2400

volts

AC, 60 cvcles,

t/2".

xI

28 lbs.

all controls are in

ft. of tape).

50

watts.

ttre

neutral

po-

0n-Off

tion,

When

applied
the

Volume

Switch

When

power

the

to the

power

the switch is

isturned

switch

tape deck

to

off

Turning

volume

recording.

Tone

during

This control functions

ing

theeontrol

responae

attenuates

PIay-Record

Record.

This

Turning

and

the

and

is

a 3-position

pushed

onto

isin

theamplilier and

the Amp-Off

only. The

the entire unit.

this

control

playback

clockwise increases

turning

high frequency

Record

this

control

elockwise

and

the recording

playback

in

the control

response.

Lock

eontrol:

elocknrise

FUNCTION

to the All-On

position,

Of{

tapedeck.

power

position

increases

level when

only. Turn-

thehigh

counterclockwise

frequency

Stop, Piay, and

from

the Stop

posi-

is

turns

the

OF CONTROLS

position,

Record

position

N0TE:

Rewind-Forward

the

ward

Rewind-Forward

Turning

in

the Rewind

Forward

NOTE:

Play-Record

Stop

trol

Pause

When

from the

permits

This

places

Lock

at

the

This

Stop

control

mode

This

control

position

can

be

this lever

eapstan,

spot

the

and

same

unit in play.

turning

time,

control is

control.

position

this

model
of operation.

before

can

be

control

to

is interlocked

control.

before

operated.

is raised,

and

the take-up

editing

the

control

places

the

interlocked

It

the

operated.

to

the

the right

the

and

left

It

must

play-Record

pressure

momentary

Depressing

to the

unit in

must

Rewind-For-

places

be in

reel

with

be

places

the

with

con-

is

is

disengaged.

stops.

Record"

the

the

the

removed

the

Record

in

the unit

unit in

PAGE

2

Threading the

1. Place

2.

3. Insert

a

(27),

dle

protrusions

the

the

on

take-up

the

slots engage

Unwind

reel.

HoId a

the

tape

faces

the rear

the

slots in

ing

the

the

tape and

To Make

Recording

a

Tape

full

reel

of

tape

making certain

on the

spindle

protrusions

the

about

inches

14

section

slot, making

of the recorder.

free

place,

in

take

end

of the

up

any

thehub

end

on the

the

pan.

(67),

tape from

of

tape

of

sure the

the

of

take-up

rotate

slack.

l.

Fig.

Place an

again

TopVieur

PERATI

O

reel

supply

reel

slots

empty

makingcertain

on the

the

and

taut

insert into

dtrll-coated

into

tape

one

reel. While hold-

the reel

to secure

engage

pan.

supply

of

of

NG

spin-

reel

side

the

Tape

Transport

I

NSTRUCTIONS

CAUTION:

To

red

red

low

making a

Play

Thread

1.

the Tape".

Turn

2.

to

Turn

3.

Adjust

4.

ening

Mechanism.

portion

portion

Do not

impedance

recording.

Back

a

Tape

the

tape as

the

unit

warm

up.

the

Play-Record

the

volume

level.

.:, {?'

of the

except

eonnect

load

and

on

ttf

i

()

scale

on

loud

a

to the

described

allow

control

and

tone

but

does not

passages.

speaker

Output

under

a

few

to

to

the desired

or other

jack

while

"Threading

seconds

play.

enter

for it

the

list-

3

Op

E9

'tr

tp

sd

tt

{

PIug

I.

Place

proper

microphone.

Plaee

2.

press

time

Record
Preset

3.

ume

a microphone

the High Z iiltric-

position

the

the Record

rotate the

position.

therecording

control until

to match

Pause lever in

Loek

Play-Record

the

into

the

Low Z Mic

the

the

button and at

level

by

indicator

Microphone

switch

impedance

positionl

Up

the same

control

adjusting

goes

the

up to

jack.

in

the

the

of

de-

to the

Vol-

the

Speed Change

To

ips,

capstan.

it

on

lndex

change

remove

When

the

bushing

Counter

Aftera

index

counter

the tape

the

thumbscrew

the

post.

is

tape

to

"000".

speed from 7

The

is

index

bushing

threadedon

and

bushing

not

being used,

recorder,

the

numbers

Z

L/

to B B/

from

ean

PAGE

the

store

set the

then

4

at

o

F

(f

m

7

J

(lr

3

------.r

-

noted at the begindng

be

reference'

EXtefnal

"B

connected

To

Speakef

An external

ohm out"

Remove Tape Transprt

Remove the

l.

ln

Remove the tno acrews

2.

Removeone screwon

3.

jack.

r hen using

pan).

each

and remove the dress

cheon and lhe

elde'

4. Remove the

Fig.

of each

speaker

ihe

two

may be

inte"nai speat e-r-vitl

an external apeaker.

f rom Case

in

acren,a

the splndle

holding the dreas

plate.

the rlght side of the

tps

7 r/2

pressure

bustrlng

roller.

2.

Bottom

selection

plugged

-

from the

View of Tape Transport

future

for

into

the

be dis-

D ISASSEM BLY

Efasing a Tape

it' turn

on

Play-Record

Record

To

plug
the

Record llom

t.

(one

paDs

8. Unplw

plate

9.

eacut-

left

To

I.

Mechanisfn.

To eraae

a tape

the Volume control to minlmum

control to

from a High Signal

To record

the signal

recordlng

same

from a radio, TV

aource

procedure

a Microphone".

lour acreq's

ffil:l""S:

all connectlona

lift the tranaport

spealrer

Toereasaemble,

Remove

Remove four screwa

cutcheon

and

the

Amplifier

to the ease.

wlthout

Record"

lnto

the

reverae

from

holdlng

putting

to the tape

a nev recording

Level Source

receiver, or

Rad-Phono

aB

de8cribed

holdins the transport

from the case'

the foregoing

Case

amplifier

jack.

under

transport

and the

tuner,

Use

"To

and

pro€ed-

and es-

Remove the

5.

Play-Record

knoba'

Remove the eacutcheon'

6'

PAGE

4

and

Rewind-Forward

2. Unplug

Lut the

3.

4. To

reassemble,

!e.

all connecting

ampllfier

from the caae.

revelse

cablea.

the foregoing

proced-

ADJUSTMENTS

Record-

l.

Playback

Thread

port

as described

2. Connect an

plug

and insert

Remove

3.

Insert

4.

into

the alignment

Lubricate

in heavy

vice,

service,

once

or

Supply and

l.

drops of light oil.

Rewind idler

2.

with

one

ing.
Apply

3.

to the

pressure

the

grease.

Head

a

standard alignment

the

lignment

A

under

AC

voltmeter to a

plug

the

head

cover.

"Threading

into

ascrewdriverthrough

screw.

following

the

every

year

a

in

take-up reel

parts

months in moderate

six

light service.

spindle shafts, with two

bearing and

dropof light machine

a liberal amount

pressure

roller

roller and

of
bearing

wipe

tape

the trans-

on

the Tape".

standard

the

Output

holein

the

every

three

phono

jack.

thehead

LUBRICATION

months

ger-

take-up idler bearing

oil on each bear-

light

machine

shaft.

a\pay any

grease

Replace

excess

Playthe

5.

alignment

10,000

tape

screw in

cycle note

ing.

Shoes

Brake

When

Remove

(l2l)

ing

in the

oil

brake

new

the thumbscrew

from the

oil hole in

loosen the mounting
degrees until a

4.

Allow the motor

away any

Place a

5.

counter

Applya

6.

roller

excess

small amount

rilorm

liberalamountof

all

on

7. Disassemble

and

lower

oil

at full

back

either direction

gives

(34)

shoes

screws

and rotate

braking

capstan.

the capstan

to run for

and replace

oil

gear.

levers and

the motor

pads.

Clean

volume, and

the highest

(80)

and

surface

(120)

j,s

and?

place

become

the

exposed.

a few

retaining

a few minutes.

the bushing.

grease

of

machinegrease

cams.

and

saturate

away

all

rotate

until

meter

shoes a few

2 ips

L/

bush:

diops

the

on

to each

the upper

excess

the
the

read-

worn,

of

ring.

Wipe

index

oil.

Most

be traced

contaet.

pressure

defects, other

than wear

to dirty surfaces with

The Record-Playbaek

roller may accumul,ate

ptom

Sym

Motor

Noisy
frequency

Wow or flutter

speed.

Insufficient

3 3/4 ips

Tape spills when
Rewind

Index

tion.

No

takeup

No tape movement

or Record mode.

not run.

does

playback

response.

or

poor

at 7j ips

drive

fast

at 7!

going

to Stop.

forpard.

in

from

speed.

Forward

or

Counter doesnot func-

or

or breakage,

which

the tape

head,

a

high

capstan

coating of residue

AC

t.

Fuse

2.

Defective

3.

Heads

l.

2.

Head magnetized-

1. Speed change

ping

l.

or

Defective main

(31).

2.

Oil on capstan.

Defective

3.

(u8).

4.

Drive motor

Reel diameters

l.

Brake shoes

2.

or

l.

Counter belt

ken.

Forward idler

l.

(32)

Play

l. Pressure

(51)

CLEAN

can

makes

and

TROUBLE CHART

Cause

cord disconnected.

blown.

motor.

misaligned.

on shaft.

out of adjustment.

disconnected

broken.

bushing

drive idler wheel

capstan

(I24)

unequal.

(34)

and

(12?)

worn

tension

or

roller

tension

I

NG

which

is worn

Usinga

periodically.

(f2l)

slip-

drive belt

defective.

(80)

worn

or bro-

spring

broken.

spring

off the

soft cottoncloth

Remedy

Connect AC

I.

Replace

2,

3.

Replace

See

i.

"Record-PIayback Head

Alignment".

Demagnetize

2.

l.

Tighten

l. Replace

(3t).

2.

See

'Cleaning".

Replace

3.

4.

Replace

Tape

l.

diameter.

2.

Replace

(3a)

and

I" Replace

l. Connect

tension
Replace

I.

spring

tape as it

and

aleohol,

cord-

fuse.

motor.

head.

(120).

screw

main

drive idler

(ll8).

belt
drive motor

reels

must have

adjust

or

(80).

counter

or replace

(32).

spring

pressure

(51).

passes

clean

(124).

the same

brake shoes

(127).

belt

Forward idler

roller

tension

parts.

these

theseparts

wheel

=On

E9

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sd

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TI

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m
F

(.'t

PAGE

5

Fig,

3

.

Exploded

View

of

Parts

Above

Baseplate'

PAGE

6

=On

E9

'nr

dV

sd

rt

{

A

PHOTOFACT

@Howord

Fig. 4.

"EXPLODED''

W.

Soms & Co., lnc.

Exploded

View

of

VIEW
1963

Parts

@

Below

w

-@"

I

I

Rre

I

I

lr

r@

Baseplate.

PAGE

TI

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m

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d

UI

7

Ref

No.

I

2

3

4

5

6
7
8

I

l0

ll

t2

13
L4

l5

l6

l7

l8
l9

20

2t

22

23

24
25

26

27
28
29

30

3l

32
33

34
35
36

37
38
39

40

4I

42
43
44
45
46
41
48
49
50

51

52

53

54

55
56

51
58
59
60

6l

62

MECHANICAL

.

Part

No.
50-4 3

50-15

50-4?
52-27

50-16

50-22

50-22

50-17

50-29
50-90

Screw, Reel
Reel

Screw

Pressure

Transport
Knob,

Set Screw

Knob,

Control and

Screw

Spring

Spring,

Description

Table

Table

Roller

Deck

Panel

Play-Record

Rewind-Forward

Head

Bracket

Brake Activating

Panel

Lever

Load

Tie Lug

50-?9

50-81

50-08

52-23

52-12

Retaining

Lever,

Spring,

Tension

Take-up
(Includes

Pause

Spring,

Rewind-Forward
Steel

Rewind-Forward

Ring

Take=up

Take-up

Brake Assembly

Shoe

&

Lever

Pause

Lever

Ball

Brake

Spindle

Brake

Bracket)

Tension

Operating

Control Pivot

am

C

Roller

50-89
50-78

50-B?

50-03

52-04

50-92
50-82

50-7?
52-66

52-43

50-85

52-08

5t-77
5l-06

50-57

Spring,

Release

Lever,

Lever, Forvard

Tape

Take-up

Splined

Retaining

Washer
Main

Spring,

Forward

Brake Operating

Deck

Baseplate

Spindle

Roller

Drive

(Part

Ring

Idler

Forward

ldler

Lever

Idler

Operating

(Complete)

of

2?)

Wheel

Idler

Tension

Lever, Forward-Take-up

Pivot

Bar

Brake

Shoe

Screw

Take-up Arm
Screw, Roller

Lever,

Pivot

Securing

Pressure

Roller

Roller

Play-Record

Shorting

Lever,

Record

Spring, Record
Screw,

Lockwasher

Switch

Rewind

Lock

Record

Operating

Activating

Button

Lock

Blade

Lock

Idler

Pivot

Cam

Insulator

Insulator

52-04

5Z-07
52-26

52-ll

50-48

53

-93
50-55
52-90

Rewind ldler

Lever,

Spring,
Spring,

Tengion

Screw,

Head

Cover

Screw,

Head Assembly

Wheel

Renind

Pressure Roller
Rewind" Drive

Head

Cover

Head Mounting

Positioning

Wheel

(Fuil

Track)

Tension

Retaining Ring

52

-05

52-82

Washer
Rewind
Screw

Intermediary

Bracket, Rewind

Wheel

Intermediary

Idler

52-10

Spring, Rewind-Idler

Release

*

WALSCO

Replacement

PARTS

LIST

Ref .

No.

63
64

65

66
67

68

69

70

7L

72
73
74
?5
?6

77

78

79

80

8l

82
83
84
85
86

87

88
89

90

9l

92
93
94
95
96

91
98
99

r00

l0l

102
103

r04

r05

106

r07

108

109

ll0

lu

rt2

lt3

l14

ll5

u?
II8

ll9

120

L2L

r22
r23

t24

125

r26

127

128

129
130

Part # l4l0-54

Part

No.

50-44

50-20
50-45
50-63

52-46

52-06

52-42

50-65

50-?7
50-75

50-?6
50-0?

50-66
50-38

50-53
50-97

52-79

5r-01

50-99

5r-75

52

-53
52-03
50-34

52-45
52-44
5l-94

50

-55

50-14

50-67

50-6 8*

50-69

Descri

Screw,

Tape
Tape
Tape
Supply
Supply

Spring,

Wastrer

Retaining

Splined

Washer

Screw
Spindle

Spring,

Washer

Tape

Guide

Top

Guide Washer
Guide

BaIl

Spindle
Spindle

Conical

Ring

Roller

Mounting

Supply

Retaining Ring

Screw,

Take-up

Lever,

Brake Shoe
Sprrng,

Index

Take-up
Control

Brake Shoe

Spindle

Supply

Nut

Supply

Counter Assembly

Spindle

Assembly

Rewind-Forward

Washer,

Cam
Spring

Idler-Lift

Set Screw

Fiber

Operating

Rewind-Forward

Control

Lockwasher
Screw

Spring,

Spindle

Washer,

Retaining

Spring,

Play

Screw

Nut

Lever,

Amplifier

Screw
Washer

Cotter

Screw,
Spring,

Assembly

Take-up

Spring

Flat

Ring

Forsard

Control Shaft

Idler

Lifting

Switch

Pin

Amplifier

Amplifier Switch

Bar Tension
Bar

Lever,

Operating

Amplifier

Washer,Fiber
Retaining

Rubber

Flywheel

Capstan

Motor

Speed
Speed

Knurled

Screw,
Drive

Set

Index

*

Index

Set

Index

Ring

Motor

and

Capstan

Drive

Mounting

Change

Change

Motor

Motor

Motor

Screw

Counter

Counter

Screw

Counter Spindle

Cotter Pin

ption

Guide

Plate

Bearing
Assry.
Rubber

Spindle

(Part

Plate

Spindle

Mounting

Brake

Spindle

Spindle

Mounting

Bracket

Detent

Control Shaft

Bottom

Spindle

Retaining

ldler

Bar

Switch

Mount

Belt

Plate

Bushing

Bushing

Bushing

Mounting

Pulley

Belt

(Comptete)

Tire

of

6?)

Load

Shoe

Brake Link

Brake Load

Plate

Cam

plate

Load

Cap

Lift

Load

Control

Bar

Slide

Switch

Assembly

Thumbscrew

Pulley

Cam

PAGE

8

6AR5

6BQs 6X4

6AU6

6AU6

Fig.

5. Top

View

of

Amplifier

Chassis.

=On

E9

tE

tV

Sd

tt

{

Fig. 6.

Bottom View

of

Amplifier

Chassis.

PAGE 9

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AMP

PARTS LIST

AND

DESCRIPTION

ceneral-use Unshielded Hook-up
Power Cord

PowerCord(InterlockType)..,.,,.

Low-Loss Shielded Lead

Phono

Pick-up

AF A mplifier
AF

Amplifier

Output

ITEM

ORIG.

No.

TYPE

(Interconnecting)

Arm

Cable ..,...

usr

XI ISBI]O AF Amplilier

ctA

c2
c3
c4
c5
c6
c7

c9

c10

cll

cl2

ITFM

N6

CAP.

20
20

B

20
20

100

t00

i

25

25

3

30

*

Not

VOtT

350
350
300
300

r5

l5

150

25
25

350

t00vA

6

normally

ROBERTS

PART No

5I-23

5l-iB

5l-rB

-08

54

54

-08
52-98
5l-14

5t

t4

5t=.14

5t-2t

54=.0?

in distributor's

WIRING

Wire ......,

....,UBeBELDENNo.88?4(Rubber)or8895(plastic)

6AU6

6AU6

6BQ5

IRANSISTORS

REPLACEMENT DATA

DETCO

PART No.

DS26 GE

ETECTROTYTIC

coRNErt-

DUEItIER

PART

BR20-3
BR20-3
NLWl00-15
NLW]00..15
NLWI. r50
NLW25-2
NLW25
NLW25=25

BR4 350

KCNT-3020

thru distributor

PRS23g0

PRSl?35

PRSI?35

PTT?3
PTT?3
PRSI?00
PTTB2
PTT82
PTTB2

PRSI6OO

RY-664A

stock.

AEROVOX

PART No.

Available

DATA

Use BELDEN No. 8530
Use BELDEN No. l?106

.. Use BELDEN No. 840i or 842I

Uge BELDEN No. 8430

TU

BEs

GENERAL

ELECTRIC

PART No.

-2

CAPACITORS

REPLACFMFNT DATA

No.

50
50

5

-2 5

Bias OscilIator

R ecfifier

2N406

GENERAL

ETECTR IC

PART No

QT2-6

QTl-s
QTl-9

MTT.I9
MTI-19
MTI-2

MTt..lt

MTI-it

MTI-]I

QTr-2.1

on order

8524
l?109

8429
8419

RCA

PART No

to nanuJacturer

(SoLid)

Available

(Stranded)

Available

(Pla6tic)

or I?126

(Plastic)

or 17129

(Two

Conductor-Unshielded)

(Two

Conductor-Shielded)

(Ttrree

Conductor-Shielded)

PNP

MALLORY

PART No

TCD65
TC65

TC65

TTt5Xl00

TTl5X100
TTI5OXI

TT2

5X25

TT25X25

TT2 5X25

TC595

in 12

(Rubber)
(Rubber)

NOTES

PYRAMID

PART No

TDLD-28

TD.-20..350

TD-20-350

MLVIOO-I5
MLV100-15

MLVl-I5O
MLV25 25

MLV25..25

MLV25-25

TD-4

-3

in 12

50

Cotors

Colors

6 Ft,

-

9 Ft.

-

SPRAGUE
PART

TVAS-263

TVA

-I608

TVA.16OB

TE

tI62

TE-1162
TE

-1500

TE

-120?

TE

-120?

TE

-r20?

TVA..t60t

cR3020

No,

3

5*

Op

o6

tr;

'ltt

J-

€{

t\)

.lt

ul

ITEM

cl3
ct4
cI5

c16

cI7
cI8
cl9

c20

c2l

c22
c23
c24
c25

c26
c2B

ITEM

No.

250

400v

.0l

.02

400v

.0t

400v

.1

400v

.0t

.00I 570

.002

400v

.0I

r00 5%

.02

250

r00 5%

750 5Ea

.005

400v

.02

RATING

5Lk

400v

400v

400v

t%

400V

REMARKS

FIXED

AEROVOX

PART No.

1469-00025

p488N-0I

P4B8N-02
P488N-01

P4B8N-T

P488N-01

I469-00i

P48BN-002

P4BBN-OI

r469-0001
P48BN-02
1469-00025
I469-0001

1469-000?5

P488N-005
P488N-02

CAPACITORS

REPL,A.CEMENI

CENTRALAE

PART No

'tcz-240

D6-i03

DD-203
D6-I03

DF-I04

D6-r03
D6-202

D6-r03

TC Z-r00

DD-203

TCZ-240

TC Z-r00

D6-502
DD-203

CORNELL

DUEILIER

PART No

22R5T25
CUB4Sl

cuB4s2

CUB4Sl
CUB4PI
CUB4SI

5R 5DI

CU86D2
CUB4SI
22R5TI

CUB452

22R5't25
22R5Tl
5R5T?5

CUB6D5

CUB4S2

DATA

ETMENCO

PART No.

cM-l98-2 51J

4DP-l-103
4DP-2-203

4Dp

-l-r03

4DP

-3-104

4DP

-t-I03

cM-t9B-102J

6DP-t-202

4DP-l-103

M-I98-IOiJ

]

4DP-2-203
cM-t9B-2 5IJ

C M.I9B-

3M-198-

75IJ

6DP-r-502
4Dp-2-203

IOIJ

MALLORY
PART

MCE240

GEM.4II
GEM-4I2

GEM-41I

cEM-401

GEM-41I

MCJ2 55

GEM-622

GEM-4II

MCE235
CEM-412
MCJ240
MCE235

GEM-62
GEM-,1I2

No.

5

SPRAGUE

PART No.

MS-32

4TM-SIO
4TM.S2O
4TM-S10

4TM-PlO

4TM-S10

MS-2I

6TM-D2O
4TM-SIO
MS-3I
4TM-S20

MS-3 2

MS

-3I

75

MS-3

6TM-D5O
4TM-S2O

5

5

coNTROtS

wotl0ges

ROBERTS

PART

5t-97

51

-53

l/2

No.

wott, 01 less,

CENTRALAE

PART No-

B-60
B-25

unless otherwise

REPLACEMENT DATA

CI"AROSTAT

PART No.

listed.

cTs_rRc

PART

TT

o

No.

MATLORY

PART No.

I

m

n

(Jr

PAGE

II

All

RESIST-

ANCE

500K
30K

Volume

Tme

USE

No.

RI

R2

AMP

PARTS

UsT AND

DESCRTPTTON

(CONTTNUED)

R3

5000a

R4

50K

R5

5000

IOK

R6

R7

lmeg

RB

500K

R9

250K

Rl0

Rlt

Rl2
Rl3

R.l4
R15
R16
R17

Rt8

eg

lm
1000a

lmeg

250K
?50K

20000

2nreg

lmeg

500K

No.

L]L2Bias

ITEM

No.

L3

ITEM

No.

I1 Ii

ust

Osc.

Hum Bucking

CURRENT

.045A

PRI

ie)

7V

.33A

SEC,3 SEC.4 sFc.5

6.3v'O)

RATINGS

N DUCTANCE

(O

DC RES

2054 7HY

N

RATI

G

SEC,1 SEC.2

5IOVC T

6.3v6)

.0451

o

.6A

Att

w'tt.qes

REPLACEMENT DATA

RoBLRrs I

PART No.

5r

-35

CURRENT

I

000--)

ROBERTS

PART No.

52

-24 c-2975

TRANSFORMER

ROBERTS

PART No.

5l-57

rl,

*T,fl11J3.,l1,,

cotrs

m.,ir i uirt"'

PARI

No

I

PART No.

I

FITTER CHOKE

REPLACEMENT

MERIT

PART NO

REPLACEMENT DATA

MERIT

PART No.

(RF-tF)

I

I

STANCOR
PART

c I?09

(POWER)

STANCOR

PART No.

otherwise ti,rud.

50K

I50A

I000

80

IOOK

6000

50K
700K
300K
500K
5000a
20K
20K

IOK

50K

500t)

r".."'

paRI

No.

DATA

THORDARSON

No,

PART No.

20c84

IHORDARSON

PART No.

|

I

*"

pant

u-""

..t"

PART No.

TRIAD

PART No

REPTACEMENT DATA

NOTES

TRIAD

c.,4x

NOTES

NOTES

TEM

No.

"12

5400a

No.

SP1 5" x

ITEM

No.

M2
M3

M4
M5

M6

M?

IMPEDANCi

PRI

SIZE

?

PARI NAME

Switch
Switch
Switch
Switch
Switch

Meter, VU

FIELD

PM

TYPE

SEC.

6

TRANSFORMER

ROBERTS

PART Nd

-80 5t-58

c. tMP.

6-80 5l

PART No.

PART

A-30r9

REPLACEMENT DATA

ROBERTS

PART No-

?0

MISCELLANEOUS

ROBERTS

PART No.

5t-55
53-94

90-06

54

-13

(AUDtO

REPLACEMEN]

No

SPEAKER

QUAM

PART No

IAZTLA

5

I

DATA

Stoncor

PART

No PART No.

A-3823

FUSES

PART

No,

SeIector, Stcp-Play-Record
Record-Playback
Record Safety

Hi Z

Mic. - Lo-Z

Power

-Position

{3

OUTPUT)

Tricd

PART No,

24S0? s-54X

(siide

Type)

(LeaI-TWe)

(Toggle)

Mic

ToggIe)

NOTES

NOTES

(Rotary

NOTES

Type)

PAGE

12