The fisher Fm-200-b User manual

29999

INCLUSIVE

CHASSIS

SERIAL

NUMBERS

ie)

FROM

2000!

THE

FISHER

FM-200-B

MODEL

FM-200-B

er

eae

6

CHASSIS

SERIAL

NUMBERS

en

ees

FROM

20001

TO

29999

INCLUSIVE

Qij7

7

B

PRICE:

$1.00

FISHER

RADIO

CORPORATION

«-

NEW

YORK

'

O

fe

'

2

n

t

w

v

L

w

r

a

ALIGNMENT

INSTRUCTIONS

Read

These

Instructions

With

Extreme

Care

Before

Attempting

Alignment.

CHASSIS:

Turn

the

TUNING

knob

completely

counterclockwise

without

forcing.

Dial

pointer

SIGNAL

GENERATOR:

The

signal

generator

equipment

must

be

able

to

supply

RF

+22.5

KC

should

be

at

zero

index

mark

on

logging

scale.

If

not,

reset

the

dial

pointer.

Disconnect

the

deviation

at

400

cps.

external

antenna.

When

using

an

oscilloscope

for

alignment,

set

the

AUDIO

LEVEL

control

for

INDICATOR:

DC

VTVM,

and

scope

for

alignment.

no

overload,

as

shown

by

the

proper

waveform

shape.

Set

remaining

controls

as

follows:

ALIGNMENT

;

,

:

T:

All

th

:

SELECTOR,

MONO;

MUTING,

OFF;

AFC,

OFF;

SENSITIVITY,

DISTANT;

ANTENNA

SELECTOR

(on

rear

MG

betas

hes

See

ke

ee

Phare,

pate

eis

panel],

300.

just

the

line

voltage

for

volts

,

50-60

cps.

Use

fully

insulated

tools:

a

small

screwdriver

for

all

trimming

capacitors;

a

K-tran

tool

for

Z1, Z2,

Z3;

a

hex

tool

for

Z4,

Z5,

Z6,

L3,

L9,

L25,

L10,

and

L14.

NOTES:

1—For

accurate

alignment,

signal

generator

output

voltage

must

be

adjusted

to

produce

meter

readings

within

the

range

specified

in

the

INDICATION

column

for

each

step,

2—Signal

generator

frequency

should

be

held

constant

for

IF,

limiter,

and

ratio

detector

alignment

(Z1

through

Z6).

3-—If

adjustment

of

muting

oscillator

is

necessary,

adjust

L14

for

3MC

oscillation

using

a

grid-dip

meter.

4—Do

not

tamper

with

adjustments

on

multiplex

sub-chassis.

These

circuits

are

extremely

stable

and

should

require

no

service

other

than

tube

replacement,

which

does

not

affect

alignment.

Multiplex

alignment

requires

special

test

equipment

which

will

be

available

in

the

near

future.

If

servicing

is

required,

write

to:

FISHER

RADIO

CORPORATION

-

21-21

44th

DRIVE

-

LONG

ISLAND

CITY

1,

N.Y.

INDICATOR

ALIGNMENT

TYPE

CONNECTION

SIGNAL

GENERATOR

STEPS

|

cuss

TUNING

COUPLING

FREQ.

MOD.

Point

of

no

signal

and

no

interference

ADJUST

INDICATION

Z4,

Z5

top,

Z6

bottom

and

top

for

max.

indication

Between

+5

and

+9

volts

FM

generator

connected

to

1

of

V6

Connect

DC

VIVM

to

test

point

3

Point

of

no

signal

FM

generator

connected

and

no

interference

Connect

DC

VTVM

to

1

of

V6

to

test

point

4

Z6

top

for

Zero

reading

on

min.

indication

zero

center

scale

FM

ALIGNMENT

(tuner

only)

i

Between

Point

of

no

signal

FM

generator

connected

Connect

DC

VIVM

Z3

top

and

no

interference

to

1

of

V5

to

test

point

2

bottom

for

—0.5

and

max.

indication

—1.0

volt

F :

FM

generator

connected

Z1

and

Z2

Between

Point

of

no

panel

to

test

point

1

through

wire

ecnnedt.

pets

top

and

bottom

—0.5

and

no

interference

‘'gimmick’’

(less

than

0.5

uuf)

O-TeettPoUn

for

max.

indication

—1:0

volt

L10,

L25,

L9

and

L3

for

sine

waveform

and

max.

neg.

voltage

FM

generator

connected

to

300

ohm

terminals

through

120

ohm

carbon

resistors

30%

FM

{22.5

KC

Dev.)

at

400

cps.

DC

VTVM

to

test

point

2

and

scope

to

RIGHT

or

LEFT

OUTPUT

jack

Less

than

90

MC

—3

volts

106

MC

90

MC

106

MC

C21,

C24,

C15

and

FM

generator

connected

30%

FM

DC

VTVM

to

test

point

2

.

to

300

ohm

terminals

through

(22.5

KC

Dev.)

and

scope

to

RIGHT

C2

ba

sine

4

ir

nen

120

ohm

carbon

resistors

at

400

cps.

or

LEFT

OUTPUT

jack

waveform

an

—3

volts

max.

neg.

voltage

Repeat

steps

5

and

6

for

proper

dial

calibration

and

maximum

output.

SCHEMATIC

DIAGRAM

!

|

cls

|

L?

|

v4

v2

EF94/6AU6

|

6cw4

Zi

L9

Las

9

pone

ey

|

a

|

.

Bev

[2

|

i

c24

|

L413

i

ee

*

56K

|

cis

|

c3-B]

C20

23

C3

-

ceo

|

ic

ce

;

a;

10

8

ns

mt

28

a

|

L509-139

RIO

=

Nee

ee

eet

330K

o027UF

T

|

R4 R6

=

100K

120

0.68

UH

{-

wore

IL

Ror

Sfx

h

22k

T

R36

|

cs

AAA

1000

|

8M

SI-A

|

=

————

SECTION

|

FRONT

|

R27

——-

-_—+

|

1oK

cRI

Le

|

6-88C20

1.2uH

|

C6

clo

$3

1000

t/t

t—IIl

1000

|

cla

SECTION

|

FRONT

1600

IF

zie

rake

oe

abl

|

ta

es

a

8

te,

=o

oes

az,

:

a!

R39

SI-A

a

470K

SECTION

|

REAR

R7

a

4

6°

3!

fo)

\

IM

C4

L

1

cao

RS

“T

.02UF

°

470K

:

°

to]

i

4

°

©.

R3

82

cll

25UF

T

$3

SECTION

|

REAR

ANTENNA

ane

a

aeetiss

ANTENNA

Paar

:

SELECTOR

+

SWITCH

200v

I75V:

148v

Oe

:

S

\wor

:

R20

R22

R24

wom

AN

>

B

°o

Oo

270

3.3K

omne)

105=120

VOLTS

AC

c28-8

c2e-c_L

c2e-p

50-60

CYCLES

40UF

Al

40UF

li

40UF

tk

ANTENNA

4 4

4

72

z - =

C46

ce

RI2

O1UF

820K

abi?

Sug

_3L2t

_3]L2

SWITCH

POSITIONS

SI

$2

$3

$4

$5

ANTENNA

MUTING

AC

@

SENSITIVITY

SELECTOR

AFC

CONTROL

SELECTOR

IPOWER

OFF

(SHOWN)

|

300

OHMS

(SHOWN)

|

OFF

(SHOWN)

OFF

(SHOWN)

MONO

(SHOWN)

C3

5000°T

c3a]

cas]

c38

er:

5000]

5000

1

LOCAL

72

OHMS

MICROTUNE

ON

STEREO

MONO

AUTOMATIC

DISTANT

AFC

|

STEREO

FILTER

AFC

2

Oi

ECF80/6BL8

Wiad

.oo27uF

647K

——t--=e=

+

27,00

TEST

POINT

MPX

$5

CONNECTIONS

=

SECTION

|

FRONT

;

SECTION

|

FRONT

R39

470K

R65

470K

an

v9

*

ECC88/6DJ8

SEE

NOTE

3

ue

83

SECTION

|

REAR

SECTION

|

REAR

ley

oO!

OUTPUT

A

LEFT

RBO

1

VIO

IM

=

ECCB8I/IZAT7

NOTES:

Sai

>)

DENOTES

READINGS

OF

MICROTUNE

CIRCUIT

oo

RIGHT

____

WHEN

IN

OPERATION.

Ber

|

fer

2.)

__

T

DENOTES

READINGS

OF

MUTING

CONTROL

Trcror]

[main]

:

ees

L

re

WHEN

SET

AT

MAXIMUM

POSITION

rao}

cso]

390

22M

3.-l4V

READING

WHILE

RECEIVING

AN

MPX

STEREO

li

STATION

ONLY.

C66

R63

Vil

R79

AUF

3

RB!

+

680

100K

IM

a

ECC8I/I2AT7

=

AW

#

2010

P9I14

SCHEMATIC

DIAGRAM

v4

EF94/6AU6

L4

er

|

vl

1000

37.

|

ECC88/6DJ8

:

|

‘<

sev

[2

i

c24

!

|

ileal

-

|

c2

.

cis

|

c3-p]

C20

3

4

C3-D

L

509-139

RIO

2

330K

|

Ra R6

100k

120

0.68

UH

|

ca

.0027UF

947K

liooo

SI-A

|

=

|

SECTION

1

FRONT

|

R27

——

|

10k

2700

POINT

MPX

|

CRI

la

S5

CONNECTIONS

|

G-9SC20

1.2UH

SECTION

|

FRONT

c6

clo

s3

1000

YH

t—Hll

1000

|

cl4

SECTION

|

FRONT

1600

IF

in

a,

[2S

nae

ee)

ns

Op

enn,

Le

oe

at

pes

F

J

SI-A

Re

SECTION

|

REAR

ae

T

29

o!

oe———_—

° °

IM

+

cao

R5

"T

.02uUF

°

470K

R14

+

470

i

°

to

:

Ris

fo)

ee

v9

°

470K

*

Be

BG

ECC8B/6DU8

—SEE_NOTE

3

si

cil

AUF

25UF

—

[

SECTION

|

REAR

83

=

ia

=

SECTION

|

REAR

ANTENNA

oe

L2

ANTENNA

au

L509-139

SELECTOR

SWITCH

14ev

FI

R24

OUTPUT

AAA

>B

A

3.3K

LEFT

105-120

VOLTS

AC

28-8

c28-c

C28-D

300

72

50-60

CYCLES

aa

eT

40UF

T

40UF

al;

[RcRor]

ANTENNA

+ +

4

ae

72

=

2

z

=

mC

RI6

9 9

120

rT

vlo

vit

=

RI7

VIO

R80

=

120

45

4,5,

IM

>

-

>D

ECC8I/I2AT?

ce

Rize:

gicp.

CU

eee

ee

el

I

.O1UF

820K

1

t

1

|

vl

|

v4

V5<

V6

|

]

3[ui7

39

Sfi2t

32

SWITCH

POSITIONS

|

arr

aa

aaeD

St

32

33

$4

35

:

!

c3t

c39

oureus

}

DENOTES

READINGS

OF

MICROTUNE

CIRCUIT

ANTENNA

MUTING

5000

AC

&

SENSITIVITY

SELECTOR

AFC

CONTROL

SELECTOR

Ls

steel

are:

a

RIGHT

____

WHEN

IN

OPERATION.

=

a

R67

|

2.;__

|

DENOTES

READINGS

OF

MUTING

CONTROL

POWER

OFF

(SHOWN)

|

300

OHMS

(SHOWN)

|

OFF

(SHOWN)

[|

OFF

(SHOWN)

MONO

(SHOWN)

150K

L

WHEN

SET

AT

MAXIMUM

POSITION,

Pros}

cso}

LOCAL

72

OHMS

MICROTUNE

ON

STEREO

MONO

AUTOMATIC

cs8

R75

3.-l4V

READING

WHILE

RECEIVING

AN

MPX

STEREO

390

22M

STATION

ONLY.

DISTANT

AFC

|

STEREO

FILTER

Ul

ut

ONLY’

AFC

2

vi2

ceé

On

ECF80/6BL8

ak

pi

Vtl

ie

alu

:

Rei

1

ECC8I/12AT7

=

AW#

2010

P9I14

SCHEMATIC

MPX

CONNECTIONS

MPX

INPUT

45°

HEATER

PINS

9

+125

VOLTS

+160

VOLTS

TUNING

INDICATOR

CHANNEL

A

OUTPUT

CHANNEL

B

OUTPUT

C209

C

2l6

+001

UF

NOTE

VOLTAGES

M

NO

SIGNAL

|

SCHEMATIC

DIAGRAM

«©

MULTIPLEX

SECTION

R202

15K

C

216

R

209

T.S.R

[102

|

2

a

c

210

1*

an

Ba

C22

_

R222

R224

MAF

T.S.R

[10

ee

yes

sas

and

OO!

LF

C225

i.

LUA

Mis

Ria

94V

L102

[

ea

com

|

Rees

R225

vlio2

=

22K

=

22K

ECC8Il

6

\

C2

C222

R214

l2AT?

ang

.047KF

OS

SaLe

Reale

R

216

33K

lO

M

01

NOTE

LAST

VOLTAGES

MEASURED

WITH

VTVM

TO

CHASSIS

R230

|

C226

NO

SIGNAL

AT

MPX

INPUT.

.

MPX

SEPARATION

CONTROL

AW#1957B

P926WX

SCHEMATIC

MPX

INPUT

4,5

°

HEATER

PINS

9

+125

VOLTS

+160

VOLTS

TUNING

INDICATOR

CHANNEL

A

OUTPUT

MPX

CONNECTIONS

CHANNEL

B

OUTPUT

C209

SCHEMATIC

DIAGRAM

-

MULTIPLEX

SECTION

C

216

R

209

T.S.R

+001

ALF

33K

Y

4:

Rei?

4

R2ig8

C210

I8k

18K

NAF

T.S.R

O

Miu

R213

pa

100

K

|

100K

7

2

ss

es

:

2005

UF

ew

R2l2

R

216

33K

IO

M

NOTE

VOLTAGES

MEASURED

WITH

VTVM

TO

CHASSIS

NO

SIGNAL

AT

MPX

INPUT.

MPX

SEPARATION

CONTROL

C2el

R222

R224

097

UF

22K

22k

C223

OO1

LF

C225

L102

ome

R223

R225

=

22K

=

22K

LAST

AW#1957B

P926WX

SCHEMATIC

PARTS

DESCRIPTION

LIST

-

CAPACITORS

10%

tolerance

for

all

fixed

capacitors,

unless

otherwise

noted

or

marked

GMV

(guaranteed

minimum

value}.

All

capacitors

not

marked

uf

are

pF

(uuf).

Symbol

Description

Part

No.

C200

Ceramic,

.Oluf,

+80

—-20%,

500V

C50089-7

C201

Ceramic,

680,

1000V

C50072-2

C203

Ceramic,

220,

1000V

C50183-3

C204

Mica,

470,5%,

300V

C50332-4

C205

Ceramic,

82,

N1500,

1000V

C50070-7

C206

Ceramic,

.OOluf,

GMV,

500V

C50089-2

C207

Ceramic,

.005uf,

+80

—20%,

500V

C50089-6

C208,

209

Mica,

4700,5%,

500V

C50332-5

C210

Electrolytic,

luf,

350V

C€50283-3

C211,

212

Ceramic,

.0OOluf,

GMV,

500V

C50089-2

C213

Ceramic,

.O5uf,

+80

—-20%,

100V

C50073-2

C214

Mylar,

.0047uf,

400V

C50197-25

C215

Mica,

3900,5%,

500V

C50332-6

C216,

217

Ceramic,

.0Oluf,

GMV,

500V

C50089-2

C218

Ceramic,

.0O05uf,

20%

,

500V

C50089-1

C219

Ceramic,

330,

1000V

C50072-1

C220

Ceramic,

.0O05uf,

20%,

500V

C50089-1

C221,

222

Mylar,

.047uf,

10%,

250V

C50197-52

C223,

224

Ceramic,

.0O0luf,

1000V

C50072-3

C225,

226

Ceramic,

2200,

1000V

C50072-5

Symbol

R200

RESISTORS

AND

POTENTIOMETERS

In

ohms,

10%

tolerance,

¥

watt,

unless

otherwise

noted.

K=Kilohm,

M=Megohm.

Description

Composition,

22M

Part

No.

RC20BF226K

MULTIPLEX

SECTION

R201

Composition,

4.7K,

5%

R202

Composition,

15K,

5%

R203

Composition,

1OM

R204

Dep.

Carbon,

1M,

5%,

%3W

R205

Dep.

Carbon,

330K,5%,

¥sW

R206

Dep.

Carbon,

IM,

5%,

“3W

R207

Dep.

Carbon,

1.5M,

5%,

¥3W

R208

Dep.

Carbon,

22K,5%,

¥3W

R209,

210,

211,212

Composition,

33K,

5%

R213,

214

Dep.

Carbon,

100K,5%,

%3W

R215

Potentiometer,

50K,

MPX-separation

R216

Composition,

10M

R217,

218

Dep.

Carbon,

18K,5%,

%3W

R219,

220

Dep.

Carbon,

15K,5%,

%sW

R221

Composition,

}1OM

R222,

223,

224,225

Dep.

Carbon,

22K,5%,

¥3W

R226,

227,

—

228, 229,

230

Dep.

Carbon,

1M,5%,

%W

MISCELLANEOUS

Symbol

Description

CR100,

101,

102,

103

Diode,

Type

1112

L100

Coil,

Low

Pass

L101

Coil,

5.25

M.H.,5%

L102,103

Coil,

20M.H.,5%

Z100

Transformer,

19Ke

Z101

Coil,

38Ke

LAYOUT

MICROTUNE

AMP

ECF80

MIXER

Osc

|

V2

RF

AMP

GOLDEN

CASCODE

ANTENNA

CONNECTIONS.

INS-

103

tOW

PASS

AND

19KC

AMP

AUDIO

AMP

12AT7

ECC81

©

MPX

TEST

JACK

STEREO

BEACON

AMP

AND

MUTING

OSC

6DJ8/ECC88

38KC

SYNCH

OSC

3RD

IF

AMP

1ST

LIMITER

6AU6

EF94

2ND

LIMITER

DYNAMIC

LIMITER

Gv

8

6CW4

1ST

IF

AMP

2ND

IF

AMP

6AU6

EF94

LEFT

OUTPUT

AMP

12AT7

ECC81

©

RIGHT

OUTPUT

AMP

RC20BF472J

RC20BF153J

RC20BF106K

R33DC105J

R33DC334J

R33DC105J

R33DC155J

R33DC223J

RC20BF333J

R33DC104J

R50150-4

RC20BF106K

R33DC183J

R33DC153J

RC20BF106K

R33DC223J

R12DC105)

Part

No.

V-1112

L50210-30

150334-1

L50334-2

ZZ50210-34

2Z50210-33

FRONT-END

ADJUSTMENTS

FRONT-END

TEST

POINT

1

BOTTOM

COVER

PLATE

=

1ST

F©)

O

INS

117

FISHER

RADIO

CORPORATION

-

NEW

YORK

NOLH-104

©

1962

FISHER

RADIO

CORPORATION

PRINTED

IN

U.S.A.

398-W124C~-12

The Fisher FM-200-B User manual

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