Motorola vt 71, ts 4b schematic

PHOTOFACT*

Folder

MOTOROLA

MODEL

VT71

VOL.CONT.

ON-OFF

TRADE MANUFACTURER

TYPE TUBES

POWER

TUNING

SWITCH

NAME

Motorola,

SET

Television Receiver

Sixteen

SUPPLY

RANGE-

Schematic

Chassis

Alignment

Block

Top

Parts

List

and

Instructions

Chassis Bottom

Alignment

Identification

Diagram

Voltage

and

FINE

TUNING

Model

Motorola,

115

Volts,

Channels 2 through

VT71

Inc., 4545

60

Cycle

TABLE

View

Description

View-Trans.,Inductor

Resistance Measurements

CHANNEL

SELECTOR

MOTOROLA

Augusta

AC

13

5,8,11

&

MODEL

Blvd.,

RATING

OF

CONTENTS

Page

2

Chassis Bottom View-Resistor

3

Chassis Bottom Tube Placement Chart

6,7

schematic-Deflection

Disassembly Instructions

4,9

Positioning

10

Cabinet

14

CONTRAST

CONT.

VT71

Chicago,

115

of

Rear View

111.

Volts

.96

•

Identification

View-Capacitor

Circuits

Feedback Spring

Amps.

Identification

on

H;V.

Rect.

12,17

13,16

15

18

19

19 19

II

0

H

HOWARD

"The listing

of any

available case a recommendation, warranty as

to the

quality parts have been Inc.,

by the

"Reproduction

and

compiled

manufacturers

or

suitability

from

of the

use, without

replacement

express

W.

part

guaranty

replacement

permission,

herein does

by

Howard

of

or

of

such

information furnished

particular type

SAMS & CO., INC. • Indianapolis

not

constitute

W.

part.

The

to

Howard

replacement

of

editorial

Sams & Co.,

numbers

of

W.

Sams & Co.,

part

listed."

or

pictorial

in any

Inc.,

these

con-

tent,

in any

manner,

the

use of the Sams & Co., Inc., ternational Copyright Union

information contained herein. Copyright

Indianapolis

(1

910)

by

Howard

is

prohibited.

Union.

W.

DATE

7,

Indiana

No

patent

liability

is

assumed with respect

7,

Indiana,

U.

All

rights

Sams & Co., Inc." Printed

S. of

reserved under

2/49-#493-16

1949

America. Copyright under

Inter-American

SET

by

Howard

Copyright

in U. S. of

America

#55-FOLDER

to

W.

In-

#16

C79.-~.iboo-

CM

CHANNELS

(CHASSIS

TS-4F & LATER)

(CHASSIS

TS-4E A EARLIER)

/SS\K

jtfj

jlfj

Jffl

28.3

4567

| 2

38.4 5 S.6 7 8&9

Jlf

B&9

I

PAGE

A

PHOTOFACT STANDARD

©

Howard

W.

2

NOTATION

Sams & Co., Inc.

SCHEMATIC

1949

ra.

/TTWfi)

i

MOTOROLA

..

, A A

§

a

^

©I

—

HHi"§

u

,

. »— —

u

SI1

ftj 1

^AAA,

sS

'

VT71

MODEL

>

UJ

CL

CO

co

<

u

MOTOROLA

VT71

MODEL

PAGE

4

n

ALIGNMENT IDENTIFICATION

AND

13QOW

INDUCTOR

VIEW-TRANS.,

BOTTOM

CHASSIS

vioaoiow

LZ1A

o

n

CD

LJ

o

^f

NOTES

INSTALLATION

No. PART

CLAROSTAT

CONTROLS

DATA

No.

IRC

PART

REPLACEMENT

No.

JUKULA

PART

11U

WATTS

RATING

ANCE

RESIST-

No.

DESCRIPTIONS

VT71

AND

MODEL

LIST

NOTES

PARTS

RMA

BASE

TYPE

TUBES

STANDARD

DATA

REPLACEMENT

No.

REPLACEMENT

MOTOROLA

PART

USE

No.

ITEM

1

Note

instructions-See

1

instructions

ti

per

ii

Note

R2A

ii

to

to R1A per

n

ii

Contrast-See

Focus

Attach

Volume

Attach

SW-A

KSS-3

AM-63-Z

AM-83-S

E

41

D13-137

74 01 A9

18A90142

18

18A90148

i

£

. Meg

Meg. 2

Shaft

1-

R1A

2.5 Meg

Shaft

Switch

C

B

R3

R2A

models.

some in

Used

8BW

7BD

9A

7BD

6AG5

Amp. RF

VI

6AG5

12AT7

6AG5

7F8

12AT7

6AG5

7F8

Amp.

'Amp. IF

1st IF

2nd

Converter

3rd IF

V2ABV3V4V5V6V7V8V9

2

Meg.-

4GOK2&1 @

2

Centering

Centering-Tapped

Note See

Horiz.

Vertical

3 instructions per

Size

R7A

Size

to

instructions

Note

instructions

per

Hold

Hold-See

only.

R10A

tap

to

to R9A per

Meg.

Horizontal

Vertical

Attach

Horizontal

Brightness

Vertical

Attach

CODES

IDENTIFICATION

control.

Meg. a 1

is

Req.

& C

& C has a 1

M-83-S

Dll-141

18A484192

18A478285

18A90144

18A90145

2

^

Meg.

5

^

2

20KS2

R4

R5R6R7A

M-61-S

P

Dll-137

Dll-141

18A90144

18A90145

18A90147

TS

i

4

£

Meg.

Shaft

20KS2

Shaft

1

5

B

R8

R9ABR10A

RESISTORS

Not

S-4J.

1

TS-4B

P

chassis

Models

in

chassis

20002 is

in

control

Shaft

1-Thls

2-This control

B

Note

IRC

TS-4B

DATA

Models

REPLACEMENT

MOTOROLA

chassis in

control

RATING

3-T'nis Note

No.

ITEM

Amp.

CODES

for AF

63^7

IDENTIFICATION

D use C,

TS-4B,

Chassis

6BT

8BD

7AC

8BD

7BK

12SN7GT

6AU6

ABD.

Limiter

Video

12SN7GT

6AL5

25L6GT

12SN7GT

25L6GT

12SN7GT

6AL5

-Vert put

Oit

Detector

Amp.

Osc.

Power

Clipper

Ratio

Audio

V10

Vll

14G

8BD

7AC

12SN7GT

6SL7GT

1B3GT

7JP4

25L6GT

12SN7GT

6SL7GT

25L6GT

1B3GT

7JP4

Tube

Output

Rect.

Osc.

Hor. Osc.

V. H.

H. V.

Picture

Vert.

AFC,

V13

V16

VI 4V15

¥12

Capacitors.

Electrolytic for

mfd.

Ceramic and

are in

Mica for

column

DATA

mmfd.

rating

CAPACITORS

REPLACEMENT

in the

and in

Capacitors,

values given

Paper

Capacity

and

1

OTKtRWISESTATED

Note

Isolation

UNLESS

Decoupling

1

Note

Coil Shunt

Grid

Ground

Dropping-See

Plate

Cathode Amp.

RF

" "

Voltage

Grid

Amp.

RF

Conv.

TOLERANCE

Amp. Grid

10? t

RF

External

-Or.

RESISTORS

Yl.-Vi.-Yl.

Br.-Grn.-Or.

ALL

No.

15K

PART

BTS-470K

BTS—

No. PART

6R6377

6R6477

i

WATTS

15K2

47QK8

RESISTANCE

Rll

R12

-Or. Or.

Blue-Gray-Blk.

Br.-Blk.-Red

BTS-1000

BTS-33K

BTS-1000

6R6229

6R2039

6R6229

6R6228

6R6410

i

XI•S

OS

10002

100

682

33KS!

R17

R13

R15

R16

R14

Amp.

Cathode

Plate

Grid

Network-See

Feedback-dee Note

Osc.

Bias

Osc.

1st IF

Conv.

-Blue

-Elk.

Red-Vi.-Red

Br.

br.-Blk.-Or.

Br.-Blk.-Red

Yl.-Vl.-Red

Red-Red-Grn.

Meg.

2

2.

BTS-10K

BTS-2700

BTS-10

BTS-1000

BTS-4700

BTS-

6R5577

6R5622

6R6229 .6R6080

6R6433

6R6320

t

5

?

^

Meg.

27002

R18

2.2

10

10K2

10002

47009

R19

R20

R21

R22

1

Cer.

Bvpass

" A

-PRS450/40

"

Isolation

Cap.

"

Cathode

Coupling-

Trimmer

Ground

Output

A

Stabilizing

Ext.

TA-510

M-10-50

BR105

PRS50-10

23A90205

21R6631

cO

100

C4C5C6

Antenna

21K470329

30

Coupling

Fixed

RF

21K470322

21B77286

20

100

C7C8C9

"

A

a

TVL-51

23B90136

150

25

300

100

602010

20

B

C

B

C3A

-Note

NOTES

Cap.

AND

INSTALLATION

Doubling

Filter

-

No. PART

SPRAGUE

TVL-44

TVL-46

No.

SOLAR

PART

No.

DUBILIER

PART

CORNELL-

No. PART

AEROVOX

AF888D«

rAF4444J«

M°,Wo.

23B90135

23B90134

150

300

VOLT

RATING

CAP.

120

140

No.

ITEM

Cl

Ci^A

Note

Plate

Cathode-See

Amp.

1st IF

Or.-Or.-Blk.

Yl.-Vi.-Red

BTS-4700

6R2036

6R60SO

X

T

2

47002

332

R23

R24

R25

"

2 Bypass .

Note Cath

See RF

21K478410

1000

Network

"

Bias

"

Yl.-Vi.-Grn.

Yl.-Vi.-Grr.

Meg.

BTS-4.7

6R6446

£

Meg.

4.7

R26

R27

"

2

Note

Coupling

Screen Bypass

See

RF

Osc.

21K478410

21K478280

1000

2

CIO

Cll

Note

Plate

Cathode-See

Dropping

Amp.

2nd IF

Yl.-Vi.-Red

Or.-Or.-Blk.

Br.-Blk.-Red Decoupling

Br.-Blk.-Red Voltage

BTS-1000

BTS-4700

6R6229

6R2036

6R6080

1

|

i

10002

47002

33ffl

R29

R30

R28

" 3

"

Note

Feedback

Grid Cap.

Bypass-See

Osc.

Osc/

RF

21K478280

21K478287

21K478410

1000156

Z

20

CIS

C14

4

3

Note

Cathode

Grid-See

Dropping

Amp.

Network-See Note

3rd IF

Video

Voltage

Bias

-Or.

Br.-Blk.-Red

Blue-Gray-Blk.

Or.

Br.-Blk.-Grn.

Meg.

BTS-1000

BTS-33K

BTS-1

6R6229

6R2039

6R6410

6R6046

a

JF

Meg.

10002

682

1

33K2

R31

R33

R32

R34

R35

"

Bypass

"

.

3

Cath

Note

.

Decoupling

Coupling

See

RF

Conv

RF

21K470323

21K470324

21K476410

1000

C16

CIS

C17

5

6

Note

7

Note

Cathode-See Amp.

"Voltage Dropping-See

Limiter Cathode

Video

" "

Yl.-Vi.-Red

Gray-Red-Blk.

Blue-Gray-Red

Yl.-Vi.-Yl. Limiter Grid-See

Or.-Or.-Blk.

BT-2-6800

BT-2-4700

BTS-470K

6R2036

6R5690

6R5671

6R6377

6R2035

i

2

£

~s

68002

470K2

822

332

47002

R36

R39

R40

R37

R38

"

" 3

"

Byp.

"

Cath.

Screen Byp.

Filter-Note

Filter

Coupling

n

ii

1st IF

IF

1st IF

Bias

1FM-25

1FI1-25

1FM-25

1FM-21'

MW.5-25

MW.5-21

1D5D5

1W5D1

1467-005

1468-001

8A471356

21A470789

21A47078S

21A470789

21K478410

1000

CIS

21K478410

200

.25

5000

1000

019

C20

021

022

C23

9

8

Note

Decoupling

Load-See

Diode

Limiter

Balancing-See

De-emphasis

-Or.

Br.-Gray-Br.

Or.

Blue-Gray-Red

Br.-Blk.-Red

BTS-33K

BT3-S800

BTS-8200

6R6229

6R5660

6R6410

•s

•£

I

10002

1802

33K2

R41

R42

R43

"

3

creen Byp.

Note

IF S

Coupling

See

IF

2nd

1FM-21

MW.5-21

1W5D1

1468-001

21K478410

10CO

1000

025

C24

" " " "

"

Blue-Gray-Red

BTS-6800

6R6428

B"2"E

68002

R44

R45

"

" 4

3

-Note

Filter-Note

" "

RF

1FM-21

MW.5-21

1W5D1

1468-001

21K478410

1000

026

C27

10

Note

11

Note

Cathcde

Plate-See

Amp. Grid

Amp.

Audio

Limiting

Output

Output Grid-See

Clipper Grid-See

Current

Audio Amp. Decoupling

Audio

Yl.

Grid

12

Plate

Note

" "

Plate

Block. Osc.

"

Coil Shunt

Network

Peaking-See

Horlz.

Cathode

AFC

"

Bias

Integrator

Clipper

2nd

Clipper

AFC

-Red

-Or.

Yl.-Vl.-Grn.

Red-Red-

Yl.-Vi.-Yl.

Or.-Or.-Br.

Red-Red-Yl.

Meg.

BTS-4.7

BTS-220K

BTS-470K

BTS-220K

6R6446

6R6407

6R6377

6R6407

X

Meg.

4.7

220K2

470K2

R46

R47

R49

R48

"

Blue-Gray-Red

Br.-Grn.-Or.

Br.-Blk.-Yl.

Br.-Blk.-Or.

Br.-Blk.-Grn.

Br.-Grn.-Or.

Or.

Yl.-Vi.-Or.

Br.-Blk.-Or.

Yl.-Vi.-Red

Red-Red-Yl.

BW-i-330

BTS-100K

BTS-15K

BTS-10K

BTS-1 Meg.

BTA-6800

6K6022

6R6031

6R6320

6R6046

6R5691

6R6477

1

|

s

TL12

DOS!

Meg.

3302

lOKSi

1

15KS!

100K2

68

R50

R54

R55

R53

R51

R52

" 8

BTS-15K

6R6477

21i

15KH

R56

" 9

BTA-10K

6R6430

10K2

R57

BTS-4700

6R6080

47002

R58

10

-3300 BTS

BT-2-220K

6R5581

6R488138

2

±

220KS

ssooa

R60

R59

"

BTS-47K

6R6048

Jp

47KS2

R61

" 12

Byp.

7

6

5

Cath.

Screen Byp.

Coupling

Note

.Note

IF

See

3rd IF

1FM-25

MW.5-25

1D5D5

1467-005

21A470789

5000

C28

See

3rd

3rd IF

Video

1FI1-25

TM-1

TM-15

ST-2-1

I1W.5-25

ST-6-05

1D5D5

DT6S5

DT4P1

1

1467-005

684-05

484-.

8A471151

8A471366

21A470789

100

600

.05

.1

5000

C29

C31

030

Screen

"

Trimmer-Note

Amp.

11

Coupling-Note

Bypass-Note

" "

Note

Sound

Video

RF

Fixed

1FM-25

1FM-325

1FM-25

-325 5

t-M.5-25

MW.5-25

MO.

1D5D5

5W5T25

1467-005

1468-00025

1467-005

SLA470789

S1A470788

21A470789

21K470328

21R6648

250

5000

70

C34

C35

CSS

032

C33

Trimmer-Note

Fixed

21K470328

70

C37

Feedback Network

Br.-Blk.-Or.

Br.-Blk.-Yl.

BTS-10K

BTS-100K

6R6031

6R6320

100KB

10KS2

R63

R62

"

Byp.

Cath.

Llffiiter

Llmiter Decoup.

1FM-25

1F11-25

MW.5-25

IDSDo

1467-005

21A470789

5000

038

13

Note

Grid

Plate-See

Osc.

Sweep

Vert.

-Grn.

-Or. Or.

Red-Red-Grn .Br.-Blk.-Blue

Meg.

BTS-3.3

BTA-2.2

6R6497

6R6433

t

Meg.

3.3

2.3

14 R65

13 R64

Load-Note

Diode

De-emphasis-Note

1FM-35

5-25

5-35

.

W

MO.

1D5D5

5W5T5

1467-005

1468-0005

21A470789

31R6590

500

5000

039

C40

Sweep Output Gria

Feedback

Vert.

-Blk.-Blue

-Blk.-Blue Br.

Br.-Blk.-Blue

Br

Meg.

BTS-10 Meg.

BTS-10

BTS-10 Meg.

6R5632

6R5623

6R5622

6R5632

z

Meg.

Meg.10 Meg. 10

10

R68

R66

" 6

"

Coupling

15 R67

Comp.-Note

Note

Tone

Audio

1FM-25

1FM-21

TM-22

MW.5-25

ST-6-002

MW.5-21

DT6D2

1D5D5

1W5D1

684-002

1467-005

1468-001

21K478410

21A470789

8A471157

600

.002

1000

5000

041

042

C43

14

Note

Plate-See

Output

Sweep

Voltage Divider

Vert.

-Yl.

Yl.

-31k. Yl.-Vl.-Grn.

Br

Red-Red-

Meg.

BTA-4.7

BTS-100K

BTS-220K

6R6031

6R476018

6R6407

2

Meg.

Meg. 10

100K2

220K2

4.7

R69

R71

R72

"

Bypass

R70

Plate

Coupling

16 Note

Audio

1FM-215

1FM-11

1FM-25

5-215 MW.

MW.3-11

MW.5-25

1D3S1

1D5D5

IW5D15

1467-005

1467-01

1467-0015

314470790

21K482726

21A470789

10000

1500

5000

C44

C45

046

Yl.-Vi.-Grn.YlYl

Meg.

3TA-4.7

6R476018

1

Me*.

4.7

R73 17

Note

17

Note

Load

Cathcde-See

Plate

Tube

Picture

Deflection

-Vi.-Yl.

-Vi.-Grn.

BTS-470K

6R6377

6R6446

2

2i2

Meg.

470K2

4.7

R75

R74 .

Bypass

Decoup.

Plate

Output

Audio

m-12

TM-15

ST-6-05

ST-6-02

DT6S5

DT6S3

684-05

684-02

8A471151

8A471152

600

.05

.02

048

C47

cropping

Voltage

.

-Grn. ,-Grn

.

.-Grn.

-VI

-Blk.-Grn

-Vi

.

YlYlYl

Br

6R6446

6R6046

4

i

Meg.

Me£.

4.7

1

4.7

R79

R73 6

"

R?6

13

R77

Trimmer-Note

coupling

n

Sync,

Fixed

Feedback-Note

1FM-31

TM-15

-31 5

ST-6-05

MO.

DT6S5

5W5T1

1468-0001

684-05

21K470322

8A471151

21R6631

600

.05

100

049

050

051

" "

-Grn.

-31k. Br

Red-Red-Grn.

6R3011

6R6046

6R2011

1

111

Meg.

Meg. 1

2.2

3.3

R80

R81

R82

Grid

« «

Coupling

Osc. Hor.

AFC

1FI1-32

TM-13

TC-5

5-32

ST-6-03

ST-2-5

MO.

DT6S3

DT4P5

5W5T2

5 4-.

684-03

48

1468-002

8A482184

8A484814

31R6629

200

SCO

600

.03

.5

200

20

053

052

054

055

15

Shunt

Prl.

Sec.

Grid

Trans.

Osc.

Horiz.

Horiz. .

-Gray-Or

.

Or.-Wh.-Or.

Br

Red-Vi.-Or,

BTS-27K

BTS-39K

BTS-18K

6R5588

6R6434

6R5591

2

18KS2

39132

27KS2

R^

"

RjJ|

Comp.

Discharge

Linearity

Vert.

Note

Grid-See

Plate

Osc.

Block.

Differentiator

Vert.

-Grn.

-Or.

Yl.-Vi.-Yl.

Or.

Br.-Blk.-Or.

Meg.

BTS-470K

BTS-3.3

BT3-10K

6R6377

6R6497

6R6320

I

2

Meg.

10K2

470KB

3.3

R96

R95

ii

Divider

ii

n

Voltage

Cso.

is

part

16

this

Note

& C

TS-4B

Feedback-See

Chassis

-Blue In

-Grn.

Yl.-Vi.-Grn.

Br.

Meg.

application.

Meg.

n .E. ca

onlv.

application.

Oils

BTS-4.7

BTS-15

In

C, D &

this In

Meg.

C, D & E

circuit

.

-4B,

TS-4J.

TS

2.2

562

6R6446

2

i

Meg.

4.7

Det

6R476065

2nd

uses

Chassis

the

TS-4J

in

TS-4J

Chassis T3-4B,

in

In

d

in

ted

used

Meg. 15

DOG

use

2-Chassis

3-Chassls

4-Not

1-Not

Note 5-Used

Note

4

R^

Kuo

Coupling

Filter-Note

'I

n

H.V.

Vert.

20

Note

loca

" "

"

Bypass-Note

"

RF

" 3

Trlmmer-5%

Bypass-Note

Fixed

RF

application.

J.

this

&

in

62002

C, D, E

uses

C, D, E

Chassis TS-4B,

TS-4B,

in used

6-Chassis

Note

Note 7-Not

Bypass

"

Fil.

TS-4D.

3802.

uses

Chassis in

TS-4C

ion.

plate

Lcation.

applicat

pi

coupling

ap

application.

this

for

this

in a

in

leg.

S,

1

10K

3302

uses

incoroorated is

TS-4B

T3-4B

TS-4J

s

part

sis

8-Chassis

10-Thls

11-Chassl

Note

Note 9-Chas

"

" "

"

" " "

tion.

applica is

in th

68002

& F use

TS-4E

s ssi

12-Cha

Note

" "

Meg.

2.2 uses

NOTES

Block

Trans.

Horiz.

& C

No.

MERIT

CIRCUITS)

(SWEEP

TRANSFORMER

Trimmer^

Fixed

PART

No. PART

DATA

THORDARbON

No.

REPLACEMENl

PART

STANCOR

No. PART

MOTOROLA

SEC.

RATING

RESISTANCE DC

"

ITEM 15

Note

Fixed Trimmer-

309

24B480

1702

PRI.

602

Tl

TS-4B

application.

tion.

this

R89.

In

application.

applica

application.

of

is

Meg.

this

in

Meg.

3

3.

uses

TS-4E

place

In

in th

use 1

in

Meg.

8

3

L39

Meg.

3.

6.

& C use

use 10

uses

models TS-4D

uses

TS-4B

T3-4J

TS-4D

chassis

s ssi

17-Early

13-Chassis

15-Cha

18-Chassls

14-Chassis

16-Chassis

Note

Trimmer Note

Isolation Line

Sync. Coupling Note

Grid

"

Fixed Trimmer Note

Osc.

Fixed

Vert.

18

Note

-See

Cathode

Grid

"

Osc.

"

V.

Isolation

Hi.

-Vi.-Yl.

-Grn.-Yl.

-Hed-Grn.

-Red-Grn.

ROG

Yl

Br

RBG

BTS-150K

BTS-470K

6R6377

6R6398

6R2011

t

eg'

eg-

?

470K2

150K2

2.2

2.2 F

R85

Grid

suppressor

Decoupling

Osc.

Clipper

V.

Isolation

HI.

parasitic

Hi.

2nd

-Blk.-Br.

-or.-Bik.

Br

Or

Br.-Blk.-Br.

Yl.-Vi.-Yl.

Br.-Blk.-Or.

BTS-470K

BTS-10K

6R6377

6R6330

6R641E

6R203b

6R3963

1

2

10K2

100S

1002

470K2

332

R89

R87

R88

R83

Network

Coupling

R90

"

Trimmer

Fixed

Sync.

Coupling-Note^ig Hor.

R91

"

Integrating

Vert.

Feedback

T

Trans.

Push-Pull

Trans.

.

Sweep

Block Osc.

Coupling

Voltage

Trans

Horiz.

Vert.

AFC

Hi

(or)

358434819

24B470154

1X471212*

24B480209

25390138

2

9002

602

SEC.l

SEC.

2602

3102

1702

4.52

00

J

C77).

5, H. F,

Ite.T.

(

E

(AUDIO OUTPUT)

TS-4D,

icacitor

c<

Chassis

MHFD.

& D.

in

C

L300

TRANSFORMER

"used

TS-4B.

net

includes

32

P'n^pRlR

amb^r

In

- n

-ar

^Ta,^fnr^"\s

.-

,,rpd

«s

-

<r

a:

^

NOTES

INSTALLATION

11.

PAGE

No.

ON

MERIT

PART

A-2928

No.

DATA

REPLACEMENT

RATING

CONTINUED

PART

THORDAR'N

T22S45

No. PART

STANCOR

A-3376

DESCRIPTIONS

AND

No.

LIST

PART

MOTOROLA

25K470392

PARTS

SEC.

.6S2

RES. DC

PRI.

2502

SEC.

3.2S:

IMPEDANCE

PRI.

28002

To

,,,,„-

^

MMFD

5000

1FM-35

§

1FM-31

TVM-316

1FM-325

1FM-21

TM-15

TVM-216

TM-11

5-325

STM-60-001

ST-6-01

MO.

ST-6-01

DSTH60D1

DT6S1

5W5T25

684-01

1468-00025

8A480355

8A480255

8A471153

21R2741

500

680

056

3A471153

21R2739

1000

900

C57

21R6648

600

500

6000

.001

.01

250

058

059

C60

C61

C62

1FM-325

1FM-335

TM-1

TM-24

0-325

5-325

.

1*1.5-21

ST-6-05

ST-6-1

MO.

ST-6-004

MO

DT6P1

DT6D4

1W5D1

DT6S5

5W5T25

1 .

1468-00025

1468-001

684-05

634-

1468-00035

684-004

21R6630

SA471149

21A481402

8A471156

21R6648

8A471151

600

500

600

500

.05

.1

.004

1000

063

250

C68

065

C66

C67

064

TVM-256

TM-15

TVM-256

5-31

STM-60-005

MO.

5W5T1

1468-0001

21A471211

100

069

STM-60-005

gT-6-05

DSTH60D5

DT6S5

DSTH60D5

684-05

1348 47

8A471348

8K48866

8A471151

8A

600C

600

6000

.005

.05

074

C70

071

C72

073

1FM-325

1FM-335

1FM-325

TM-15

1FM-21

TM-1

.5-325

ST-3-1

ST-6-05

MW.5-21

MO

MW.5-21

DT6S5

DT4P1

1W5D1

5W5T25

1

684-05

484-.

1468-001

1468-00025

8A471151

8A471355

21K478410

21R6638

21R2738

600

300

500

.05

.1

1000

1300

1000

C75

C76

C79

077

C78

1FM-325

1FM-21

TM-15

325

-325

5-325

5-

5-325

.5

MO.

21R6648

500

250

080

ST-6-05

MO.

MO

MW.5-21

DT6S5

1W5D1

5W5T25

1468-00025

21R6648

500

684-05

1468-00025

1468-001

8A471151

21K478410

21R6648

21R6643

600

500

.05

1000

250

C84

C85

C36

081

C82

C33

1FM-21

1FM-35

TM-11

-35

5-35

5

.

MO.

ST-6-01

MW.5-21

ST-6-01

MO

DT6S1

5W5T5

. No.

1W5D1

DT6S1

capacity.

1468-0005

684-01

1468-001

684-01

desired

obtain to

21K478410

31R6579

8A471153

21K470322

21R6579

21K470333

500

21K470324

600

500

600

sections

.01

15

C87

1000

500

20

500

CSS

C89

6

C90

•Parallel

091

C92

C94

093

T3A

MMFD.

1000

S) 250 V.

use

'

MFD

TS-4D

MMFD.

C. T2

MMFD.

MMFD,

1500

TS-4B,

1500

C use

C, D, E use 150

use

Chassis In

TS-4B

TS-4B,

TS-4B

used

4-Not

5-Chassls

1-Chassis

3-Chassls

2-Chassis

Note

MMFD.

J use 2.2 ti,

D,

TS-4C,

C, D.

TS-4B,

Chassis on

6-Not used Note

F, G, H. J.

C, D, J. T4

C, D, E. B

C, D, E, J. T5

I1MFD,

TS-4B,

2

TS-4B,

uses

Chassis TS-4E,

Chassis

on

TS-43

used

11-Not

7-Not used

10-Chassis

3-Not

9-Not

Note

uses

<pf11=

none

TS-4D

none.

MMFD,

1000

F, H, G, J

TS-4K,

'

MMF.,

MMF.

TS 4F, G. H.

300

1000

uses

Chassis on

TS-4B

TS-4D

used

1™

only. C

TS-4B,

Chassis on

ITEM

F, G, H. J use

uses

V.

350 V. .. No.

Tfa-4C

TS-4E,

6000

(g)

(aj

MMFD,

MFD

M'iFD.

.0005

1500

1000

C use

F use 10

F use 50

uses

TS-4E,

TS-4B

TS-43,

TS-4C

-Not 15-Used

16-Chassis

12

13-Chassls

17-Chassis

14-Chassis

la-Chassis

20-Chassis

19-Chassis

Note

MOTOROLA

Ld

o

Q

On all

am.

only.

n

video

& C

,i

TS-4B

of the

Llraiter.

ii

IF

Chassis

circuit

^

~

i

n

Sound

in

ii

n

Used

screen

of the

in the

(Continued)

CCONTJ

COILS

24^90064

.12

Chk

Fil. RF

L3

L35

24A90064

24A90C64

.12

ii

n

n n

n

ii

ii ii

L37

L38

L3

L36

circuit

located

grid

is

the iri

coil

24A471242

24A90194

this

H

onnected

,-

chassis

Input .

Chassis

Choke

Filter

other

RF

Ant

Note-On

L3S

L40

VT71

4E.

L3

G,.

DESCRIPTIONS

MODEL

AND

j^g

NOTES

LIST

PARTS

C, D

TS-4F,

TS-4B,

E, F, G, H & J.

Chassis

4 C. L4

in

Chassis

TS-4D,

In

TS-4B

Used

3. Used

(c

N

Chassis

Z

1.

J.

in

Channel

Used

H and

Channel

Used

J. i-

K G,

TS-4F,

Chassis in

Used

4.

Channel

NOTES

speaker

NOTES

Alternate

No.

GUAM

dA21

PART

DATA

No.

P6-W

JENSEN

PART

SPEAKER

J. &

G, H

C, D 4 E.

TS-4B,

TS-4F,

Chassis

in

Used

2.

5.

Channel

REPLACEMENT

RATING

ITEM

HE

D i. E.

TS-4C,

TS-4B.

Chassis

Chassis in

in

Used

3 & 4.

3 & 4,

Channel

M3TOROLA

No.

N

G, K i J.

TS-4F,

Chassis in

Used

6.

Channel

ST-109

Mod.

No. PART

503471219

500471322

IMP.

.22 3

V. C.

RES.

PM

FIELD

SPIA

SP1B

& E. q

TS-4C,D

T8-4B.

Chassis

Chassis In

in

sr

Used

8 & 9.

10 & 11.

5 & 6.

Channel

Channels

DIA.

V. C.

DIA.

CONE

7,

Channel

q

TS-4F,G,H4J.

Chassis in

Used

2 & 3.

Channels

3/4"

6"

SP2

~^ F

&.

G, H i J.

4B C D

TS-4F,

^S is

Chassis

CE~3,sc In

in

Used

Used 1

4.

ChcLmcl

Channel

E. i

c, D

TS-4B,

Chassis in

Used

2.

Channel

RECTIFIER

DATA

No. PART

or I

(48B470395

MA. 110

lil

t'

n3

11. i

&.

10

12

''hannel^

Channels

)

1471350

MA. 110

112

I'

8 & 9.

7.

Channels

Channel

MISCELLANEOUS

SELENIUM

REPLACEMENT

MOTOROLA

RATING

CURRENT

No.

ITEM

N

IT

4 E.

only) 6

G K 4 J.

TS-4B.

TS-4C,D

channel

TS-4F,

Chassis

in

Chassis

Used

(TS-4F,G,tt&J

in

Used

546.

344.

3 & 4.

5.

Channel

Channels

4F G ^3

Chassis In

Used

243

Channels

E,F&G

C, D,

4 J.

TS-4H

TS-4B,

Chassis

NOTES

in

In

Selector used

Station

Station Selector used

chassis.

in all

all

used

In

in all

L27,

used

of

Prl.

Sec. used L34

L34

Bottom

No. PART

MOTOROLA

1X471377

1X489168

17A470303

46A470302

46K480256

2SK471323

46A70023

4

Screw

ii

n

NAME PART

No.

ITEM

Nc &E.

C, D

TS-4B,

Chassis in

Used

ITE

1.

& J. H

Channel

Switch"Plug, Line Cord

MSABM4

M3

& E.

G.

Ts-48,C,D

TS-4F.&

Chassis

in

Used

4.

2.

Channel

and

ii

n

Ballast Tube

Core, Iron

M5

MS

M4

& J.

& G.

Td-4B,C,D4£.

TS-4H

TS-4F Chassis in

Chassis

in

Used

5.

344.

5.

Channel

n

n n

Core, Iron, Copper

& J.

TS-4B,C,D4E

TS-4H

6).

Chassis in

Chassis

Channel

in

Used

TS-4G,

6.

&

546.

(TS-4F

Channel

in

.

L27.

Osc. Coils.

Cabinets. Used

top of

RF and

Brown

CoilSjand

for

Ant.,

Paper

and IF

G and K.

Osc. Coils

chassis.

Osc.

RF and

in all

used L13

46A471363

TS-4F,

RF,

Indicator.

Chassis

Picture Tube

Channel

Antenna,

1X478281

13K485496

46A478242

46A470310

C, D 4 E).

E)

TS-4B,

C, D &

Blonde Cabinets. Used

(Chassis

TS-4B,

for

Paper

VT71MB

G & H.

(Chassis

for

T3-4F,

VT71B

Indicator.

for

Detector Chassis in

Channel

Video

Blonde

Brown Mahogany

13B484875

16K471438

16K478257

48A90173

Screw

and

4

Leads Assy. and

Iron

Screw

Core,

Core, Brass

and J.

& J.

TS-4H

TS-4B,C,D,E,F$G

TS-4H

Chassis in

Chassis

in

Used

7.

8 & 9.

7.

Channel

Crystal

"

ii

1N34

Escutcheon

£,

TS-4C,D,

Chassis in

Used

& 9. d

Channels

Cabinet

C,

4 J.

4 J

TS-4H

TS-4B,

Chassis

Chassis in

in

Used

12 4 13.

10 4 11.

10 & 11.

G.

E, F & G.

&

D,

F

Channel

Socket

TS-4B.

Chassis in

Used

8 & 9.

Channels

. E)

C, D &

TS-4B,

(Chassis

VT71M

(Chassis

for

VT71

for

Mahogany

Walnut

Red

16K473258

16K<t71286

11

"""11"

TS-4B.

TS-4C,

Chassis

In

Used

12 & 13.

12 4 13.

Channel

. J)

J)

&J)

4 J)

G, H 4 J).

J)

G, H 4

TS-4F,

G, H 4 J).

G, H &

TS-4F,

(Chassis

TS-4F,

(Chassis

VT71MB-A

VT71M-A

for

VT71B-A (Chassis

for

Mahogany

-Mahogany

Blonde

Brown

Red

16K489080

16K489081

16K489079

VT71-A (Chassis

Plastic-Plain

for

,,'alnut

Walnut

16K489078

36K471545

Knob

Dot

-with

-With Plastic-Plain

-with

" "

Plastic-Plain

" "

Tan

Mahogany

36K478251

36K478201

36K478202

36K478252

36K471324

n

i

"»"

11

Switch(TS-4H4

Channel Selector

Plastic-For

Walnut

36K485449

(TS-4H

Switch

Channel Selector Swttch(TS-4H

Plastlc-For

Plastic-For Channel Selector Tan

Mahogany

36K485450

36B485448

ti""

4 J)

& J)

(TS-4H

Tuning

Fine

Plastic-For

Plastic-For Tan

Walnut

Mahogany

36K485446

36K485447

36A485445

'i

"

L30B.

Chassis

Less

L30B.

Chassis

in

In

Used

Less

E, F, G, H & J.

TS-4D,

E, F & G. D,

Chassis

resistor. Used

& C.

TS-4B

Chassis

resistor.

1COK2

39K2

G, H and J.

0, D 4 E.

on

Note

TS-4F,

TS-4B,

See

Wound

(RF-IF)

MEISSNER

DATA

COILS

REPLACEMENT

MOTOROLA

RES. DC

USE

No.

ITEM

No. PART

SEC.

PRI.

S4A432232

24A471186

.2S2

Input

ii

Ant.

B

LlA

24K478293

24K484872

24B90177

OSS

OS

02

Coil

n

ii

ii ii

ii

Ant.

B

LOABL4A

L2A

24KS0178

84K478294

24K9Q179

24K478293

OS

020202

02

OS.

ii

n

ii

B

C

24K478294

24A471374

24K90180

24K478294

OS,

OSS

OS.

02

«

ii

n

ii

"

n

n n

C

B

L6L7L8

L5ft

24K478292

24K90182

24K484373

02

no

UK

,i

Coll

i

ii

RF

D

L9A

L10A

24K90133

24K90185

24KS0184

24K478292

OSS

OS!

OSS

t

i

ii

n

C

B

LllA

24A471373

24K90185

24A471372

02

OSS

oa

i

n

L12

L13

L14

24A471373

02

OSS

ii

n n

ii

LibU6L17

24K434874

24A90064

020202

Coil

Choke

Osc.

RF

LISA

24Kii-890C3

24K90187

QO

ii ii

n n

B

n A

ifR.

a

24KS0188

24K90189

OSS02OS

ii

n

B

24K489004

24K90189

Offl

n

C

B

L2QA

24K90190

E4K489004

OSS0202

ii

n

ii

n

ii

C

B

L21A

24A471370

24A489188

24A4B5442

02

0202OSS

ii

n

B

L23A

L22A

24A47S283

24A471368

02

ii

n n

n

C

B

24A489067

24A471367

020202

II HII

B

L24A

24A485443

II

II II

L25A

24A471369

24A478233

0202.12

II "

B

C

24K470313

24B90192

24A90197

1X482133

1X470396

24A90193

.62

Choke

1st IF

RF

L26

L27

24A470314

.42

.32

.22

Det.

IF

Assy.

2nd IF

3rd IF

4th

2nd

B

L29

L23

L30A

24A470745

24A470159

24A470745

S4A470744

24B470316

.62

152

12

Det.

Otf

Assy.

2nd

Sound Take-

C

LSI

15S2

32

Det.

11

Peaking

L32A

Ratio

B

L33

L34

ALIGNMENT

INSTRUCTIONS

When

performing

across

terminals

recommended

This

may be

sistor

across

also

be

disabled

of

the

25L6

NEVER

GROUND

FORMER

13

"G"

DUMMY

ANTENNA

1000MMF

•

across

stop

DUMMY

ANTENNA

Direct

markers

ANTENNA

)lrect

ANTENNA

9

Direct

10 11 12 13 14 15

16

USED.

. ;

High

6AU6

to

B-.

If

difficulty

the

If

distorted

the

oscillator

High 1

6AG5

side

The

primary

the

high

frequency side.

to

obtain

as

give a visual means

at

8056 rotation toward maximum

Figures

1 & 2 are

In

Figure

2.

DUMMY

High Pin 2 12AT7

(V2) . Low

to

of

Reconnect amplifier If

antenna, DUMMY

receiver

On

Chassis

RF and

High 6AG5 to

&

C27.

of

Junction

" » "

» "

"

ALIGNMENT

alignment

1 & 14 of the

that

the

done

by

Pins 3 & 7 to

by

Hi

Voltage

THE However, a grounded

SIGNAL

GENERATOR

COUPLING

side

to Pin 1

(V6) . Low

is

oscilloscope input terminals.

or

unstable

SWEEP

GENERATOR

COUPLING side

to

(V3).

to B-.

of

L27

flat

and

similar,

. .. SWEEP

GENERATOR

COUPLING

side

to

side

bottom

end

R17.

oscillator scope

has

fine

TS4B,

oscillator

SIGNAL

GENERATOR

COUPLING

side

to

(VI).

Low

"

-

• "

11

"

INSTRUCTIONS—READ

with

receiver

high

removing

disconnecting

Oscillator.

RECEIVER

experienced

by

Low

affects

wide a response curve

should

tuning

C, D & E

of R14

cathode

voltage

side

connecting a 1000

GENERATOR FREQUENCY

(12MC

The

GENERATOR FREQUENCY

J.2MC

if

1

side

the

25L6

maintain

DURING

AUDIO

TAKE-OFF

SIGNAL GENERATOR FREQUENCY

4.

SMC

(No

Mod.)

pattern

SWEEP

25MC

sweep!

the low

adjustments

of

determining gain

the

main

SWEEP

25MC

Sweep)

disabled

be at

maximum

control,

disregard

alignment

SIGNAL GENERATOR FREQUENCY

81.45MC

(No

Mod.)

S7.45MC

93.45MC

103.45MC

109.45MC

152.S5MC

158.35MC

164.35MC

170.35MC

176.35MC

182.35MC

188.35MC

be

and

Reconnect

TESTING coaxial

IF

in

observing marker, a 1000

is

GENERATOR

FREQUENCY

&

1ST

GENERATOR

FREQUENCY

&26.4MC'

CAREFULLY BEFORE

out

of

ray

disabled

HI

Voltage

continuity

taping

J.

CHANNEL

Any

AMPLIFIER ALIGNMENT

obtained

MHFD

MARKER

25MC

23MC 27MC

S2.1MC

22 . IMC

27MC

IF

TRANSFORMER ALIGNMENT

frequency side

A7 & A8

while difference being that

MARKER

22.4MC,

OSCILLATOR

during

gain.

pre-set

"A"

points

CHANNEL

cabinet,

tube

socket

during

Oscillator

In

the

B++

this

lead OPERATIONS line

may be

RATIO

DETECTOR ALIGNMENT

CONNECT

DC

probe series 10KS!

to

^

.Common

to B-.

DC

probe series 10K2

to

G|>

.Common

Yo

B-.

during

capacitor from

CHANNEL

Any

"

should

as

possible

the

band

CHANNEL

width.

this

adjusting

Any

ALIGNMENT

IF

Alignment.

Synchronize

this

control

adjustment

for

these

CONNECT SCOPE

Vertical

2

to Pin 3

(V2) . Low

or

to

3.

4 5 6 7

8 or

9 10

11 12 or

13

B-.

or

to

alignment

filament

lead

after OR

VTVM

with

IF

Vertical to Low

of the

points. chassis.

" « "

ATTEMPTING

It

Is

complete

to

and

supplying

alignment

INSTALLATION

connected

In

Point

lead

In

Point

lead

MFD

Alignment,

the

CONNECT

SCOPE

amp.

Point

<O

side

to B-.

waveform

be

done

with

as

The

transformer.

the

sides

CONNECT

SCOPE

Vertical

amp.

to

Point ^ .

Low

side

to

B-.

Output

scope at

mid-capacity.

Refer

amp.

12AT7

side

"

•

ALIGNMENT

necessary

eliminate substituting a 75S2 string.

tothe

ADJUST

A1,A2

A3

capacitor should

grid (Pin

r

.

simultaneously. much

contrast

of to 60

ADJUST TS-v4F, HJJ

A9

the

heater

The

the

plate Is-1 UNLESS

antenna

Adjustffor tion.

Adjust A

positive reading designates

It

may be

ADJUST

A4 -

A5 AS

A5

A4

and the

gain

control should

It

should

of the

ADJUST

A7.A8

signal

'"Vj

or a

to

line

G

ONLY)

Adjust

Is defined between as resonance.

to

connect a Jumper

circuit.

the

shock

high

and

completed.

ISOLATION

for

on

necessary

7)

of

Adjust

amplitude

Adjust 27MC the

high

of

the

tern. (See

Adjust

MC

marker

the

low

the

response

(See

Adjust top

or curve. repeat Steps 6 & 7 to sired

Fig.

secondary

The

as

possible.

be

pattern

Adjust markers

their of

the

Fig.

generator

harmonic

drawing

for

indicated

trace,

two

coil

Is

MO

All

5.12 A13

A14

A15

A16

It

hazard.

10

Watt

voltage

may

screen

grid

TRANS-

terminal

be

1/2

marker

FiR.

1.

2.

marked

REMARKS maximum

zero

pattern

respective

REMARKS

zero

deflec-

reading.

or

negative

either

side

correct

connected

to

to B-.

REMARKS

for

maximum

at

marker.

A6 to

place

50%

freq.

response pat-

FjR.

A5

until

Is

5056

freq.

side

pattern.

1)

A4 for

flat

symmetrical

If

necessary,

3, 4, 5,

obtain

as per

affects

object

The

be set

noted that

are

steeper

REMARKS

A7 & A8

are

5056

pattern

and

vertical

thereof.

showing

beat.

by

sharply

that

appears

wide

traces

tuned

through

«

11

" "

-

•

-

is

re-

'

setting

up

side 11

22.1 up

of

de-

Is

bOf,

until

up

sides

per

This

ric.

FIG.

i

2

3

PAGE

6

Disconnect

are

tuned

the

sound

On

antenna,

DUMMY

ANTENNA

Direct

17A

Direct

17B

Direct

18

Channels

Direct

19

Direct

20

There

21

channels ab

ove

A.

If

at

B.

If

sponse

DUMMY

ANTENNA Direct

17A

Direct

18

Direct

20

For

Channels 7 through

being

ALIGNMENT

L26

from

for

the

frequency.

C, D & E

oscillator

to

Low

aligned

to

termi-

Low

coll

as

3 & 6

have been

2, 4 & 5

In

Channel

ALTEFiNATE

SIGNAL

to

lower on

strip.

"R".

output

cathode

10. have

ant.

Low

13

first

carrier

chassis

RF'

ana

SWEEP

GENERATOR

COUPLING

High

side bottom antenna

nal

strip.

side

to "G"

5 & 6 are

High

side bottom antenna nal

strip.

side

to "G"

are no

antenna

are

adjusted

. Channels 195MC

in

Channels

at

189MC

-Ugh

side

"A"

terminal terminal side

to

used

as an

TS-4B,

"A" on

termi-

"A" on

Channel

GENERATOR

COUPLING

INSTRUCTIONS

ANTENNA

of

picture

GENERATOR

FREQUENCY

(10MC

(

(10MC

Not

follows,

Indicator a VTVM

oscillator

carrier

disregard

augment

SWEEP

sweep)

10MC

sweep)

with

adjustments

57MC

63MC

69MC

Used

GENERATOR

AM

using

FREQUENCY

&

&65.75MC

471.

Signal

(400

3056

(400

30£

(400 30*

set up

been

set up

9.

ANTENNA

SIGNAL GENERATOR FREQUENCY

55.25MC

(No

Mod.)

&

59.75MC

(No

Mod.)

61.25MC

(No

Mod.)

&

65.75MC

(No

Mod.)

67.25MC

(No

Mod.)

&

71.75MC

(No

Mod.)

77.25MC

(No

Mod.)

&

81.75MC

(No

Mod.)

83.25MC

(NO

Mod.)

&

87.75MC

(No

Mod.)

follow

same

points

MARKER

55 . 25MC 5L.75MC

61 . 25MC

67.25MC 75MC

77.25MC

%

Mod.)

81.75MC

^

Mod.)

83.25MC

<\,

Mod.)

87.75MC

'\,

Mod.)

for

adjust

4.

procedure

1 RF

COIL

ALIGNMENT

tube

frequency "A1

Ge

Channels 7 through

AM

adjust

RF

CHANNEL

2

3

4

5

6

connected

(Pin and

adjustment

for

these

CHANNEL

2

3

4

nerator

Instead

5

6

Signal

Generator

A25 for

Channels

A25 for

COIL

ALIGNMENT

CONNECT

DC

probe Point lead

to B-.

as

outline

as

then

chassis.

Across

(Converter cathode

tor)

Across

(Converter cathode

tor)

VTVM

^J>

above

3-1.JAT7

the RF

points.

CONNECT

SCOPE

Rio

resis-

of

R18.

resis-

13. The RF

and

8, 10 & 12 to

Channels

USING

to

.Common

in

Step

may be

(CONTJ

V2).

Note

that

colls

are

Refer

to

line

.ADJUST

frs-^F.G

H&.J

ONLY,

.

A18, A17

A20, A1&

generator.

sweep

ASS~,

A21

A24, A23

Colls

Oscilloscope

7, 9, 11 & 13 to

AM

SIGNAL

ADJUST

Adjust

A18

flection.

A17 A18 A17 A20 A19 A22 A21

A24 A23

21.

Instead

used.

the

antenna

adjusted second

drawing

Adjust

for amplitude & symmetry and for markers

coils

showing

REMARKS

maximum

placement

as per

Fig.

"

Adjust

for

these

maximum

REMARKS

maximum

of a

maximum

as

response

re-

AND

VTVM

de-

scope

amplitude.

for connected

maximum

GENERATOR

for

of

3

11

O

-H

JH O h

79

<o

ANT.j

ANT.

ADJUSTMENTS

RF.

&OSC.

COL

R.F.

COIL

ADJUSTMENTS

OSC.

ADJUSTMENTS

COIL

FOR

0

CHASSIS

TS-4B.C.D&E

PAGE?

16

TUBE

V

PICTURE

V9

VIO

1/2

AMP.

OUTPUT. F

F A

A

DET.

RATIO

AMP

VIDEO

12 V

1/2

AFC

DET.

VIDEO

OSC. I/2VI2

HORIZ.

VI3

I/2V9

OSC.

OUTPUT

VERT.

DIAGRAM

BLOCK

I/2VII

IF

VIDEO

VIDEO 1ST

2ND

3RD

AMP

osc

RF

MIXER

0

o

n

CLIPPER 1ST

2NDCLIPPER

OSC H.V.

H.V. RECT.

RECTIFIER

CD

m

r\

IDENTIFICATION

VIEW-RESISTOR

CHASSIS BOTTOM

iiaow L/IA

vioaoiow

m

FT

UU U

U U

U

isaow L/IA

viouoiow

u

TUBE PLACEMENT CHART

u u

u u u

\rir

n

Cn

o

m

o>

CHASSIS BOTTOM VIEW-CAPACITOR IDENTIFICATION

OW

130

L/1A

o

m

03

CAP

14

22

-

23a

Pin?

-__

_

-

--_

_

12002*

TOP

8

.32

-

7 Pin

10002**

6 Pin

12002*

5 Pin

12002*

4

232

READINGS

3

RESISTANCE

262

2 Pin

10002**

Pin 1

16K2**

Tub*

6AG5

Item

V !V

_

INF.

12002*

6K2*

142

18B

INF.

Meg.

2.5

6AG5

V 4V

_

02

10002**

12002*

4.8K2*

12002*

12K2*

102

52

14ffl

102

oa

10002»*

Met.

10002**

1

6AG5

6AU6

5

V 6

-

lOKffi

332

INF.*

12002*

* .

222

INF

182

222

22S2

2.7K2

332

33K2

Meg.

12002*

3

12AT7

6AG5

2

V 3

_

Meg.

822**

1

12002*

470K2

Meg.

12002*

1

22

302

27S!sa02

822**

6.8K2

470K2**

6AU6

7 V

V 8

22

2.52

3302

202

252

112

22

112

402

02

INF.

Meg.'

Meei

470K2

7.2'

2.5

Meg.

Mee.

02**

8,3

3.3

2302**

308

440K2*

Meg.

INT.

4.7

6AL5

12SN7GT

25L6GT

V »V 10

02»*

7K2*

10KS2*«

OS

Meg.** 1

Meg. 2

12SN7GT

n

v

272

02

3.3K2

150K2*

INF.

Meg.

150K2*

10

OS!

2102

INF.

17K2*

sona*

Me,;.

10K2

24K2

10

6SL7GT

12SN7GT

V13

V'2

V14

INF

INF.

.

1002

12 13

NF

I

INF.

362

INF.

11

,

INF

02

INF.

.

9 10

NF

i

6

I:;F.

INF.

150K2

MS.

IF-'F.

INF.

3352*

7 6

NF.

C-3B.

01

I

5

INF.

3002"

.

OF M2 AND PIN 4 OF

TERMINAL

INF

4

INF.

7,

272

02

POSITIVE

2

INF.

46CK2*

INF.

25L6GT

700KS2*

FROM

FROM JUNCTION

1

|02

PINS

7JP4

•MEASURED

1B3GT

V'5

••MEASURED

V 16

for

volts

at 117

Line voltage maintained 4 -

to the

given.

maximum.

are

set at

vary according

roay

service controls, both

maximum readings

readings.

voltage

and

of the

readings

setting

minimum

Front panels controls

where

5 -

6 -

RESISTANCE MEASUREMENTS

AND

VOLTAGE

o

n

9

_

-

125VDC

215VDC

44VAC

50VAC

125VDC

6AG5

1

V

44VAC

OV.

-3.2VDC§

220VDC

39VAC

4VDC

0V.

210VDC

12AT7

V 2V

_

.

_

.1VDC

110VDC

215VDC

7OVDC

180VDC

32VAC

25VAC

39VAC

32VAC

.1VDC

110VDC

6VDC .

35VDC

-

6AG5

SAGS

3

5

V 4V

8 Pin

7 Pin

6

5 Pin

4 Pin

READINGS

3

VOLTAGE

2 Pin

1 Pin

Tub.

Item

_

.

OV.

125VDC

165VDC

200VDC

90VDC

200VDC

19VAC

12VAC

VAC

25VAC

19

0V.

125VDC

4VDC .

125VDC

-

6AG5

6AU6

V 6V 7V 8V

_

7VAC

10VDC

VAC

1VDC .

20VAC

115VDC

220VDC

55VAC

50VAC

115VDC

95VDC

6AU6

30

-

OV.

-.1VDC Eg,

7VAC

-.7VDC

120VDC

0V.

12VAC

110VDC

1VDC .

-

19VUC

54VAC

0V.

.1VDC

-.5VDC

12SN7GT

6AL5

25L6GT

9

V 10

_

49VAC

34VAC

120VDC

1B8VDC

117VDC"

->

ov.

-i

;

125VDC%<

21VDC

-1VUC

16.5VDC

12SN7GT

" V

_

.

48VAC

34VAC

3.2VDC

53VAC

80VAC

20VAC

OV.

2.8VDC

5VDC .

OV.

270VDC

-26

-.8VDC

230VDC

-26,5'VDC

DC

OV.

1.5VDC

230V

T

225VDC"

53VAC

2VDC

0V.

.

"-44VDC

-2

12SN7GT-

6SL7GT

25L6GT

V 12

V 13

V 14

7VAC

common

ofims.

CIRCUIT. OF

•

HIGH IMPEDANCE

DUE TO

t t t t

T

MEASI1REFENT

t

MAKE ACCURATE

VOLTMETER.

0V.

MEASURE

NO"DO

1B3GT

V 15

TUBE

CAN NOT

60VDC

VACUUM

210VDC

1 2 3 4 5 6 7 8 9 10 11 12 13 14

MEASURE.

WITH

PINS

0V.

NOT TOO

§TAK£N

7JP4

V 16

ohms

1000

pin to

bottom views.

20,000

at

as

are at

measured

Voltages

measurements

AC

volt;

Voltage

per

1 - DC

stated.

shown

from socket

are

otherwise

unless

connections

negative

Socket

Measured values

2 -

3 -

005

500

MMF

m

g

SCHEMATIC

Co., Inc. 1949 &

HDR.HOLD

NOTATION

Sams W.

©Howard

PHOTOFACT STANDARD A

DISASSEMBLY INSTRUCTIONS

1.

Remove 4 screws

2.

Remove push

3.

Unplug speaker leads.

4.

Remove picture tube socket.

5.

Remove 4 chassis

5.

Slide chassis

7.

Remove-4

nuts

holding

on

type knobs

out and

back panel

and 2

felt washers

bolts from bottom

rear

of

cab.

lock

washers

on

and

power Interlock

of

cabinet.

speaker

and

on

front

remove.

of

and

remove.

receiver.

POSITIONING

Feedback

to the

.

consisting

tion age.

from spring should

of a

coll

of

this

spring

For the old the top of the

construction tube

be

3/4" t 1/32"

OF

FEEDBACK

grid

of

H.

V.

mounted

around

Is

very

critical

tube base.

On the new

from

Oscillator tube

the

envelope

and

misplacement

(8016)

the

lower edge

type construction

the top of the

SPRING

Is

obtained

of the

tube

by a

High

Voltage Rectifier tube.

will

result

of the

(1B3GT),

base.

ON

H.V.

capacltlve coupling device

In

very

low or no

spring should

the

bottom edge

RECTIFIER

high

be

13/16" ± 1/32"

The

of the

posi-

volt-

FOCUS

HORIZ.

CENT.

VERT. HORIZ. VERT. HORIZ. VERT

CENT. SIZE SIZE HOLD HOLD

CABINET-REAR VIEW

BRIGHTNESS

300^

PAGE

19