Philco Photofact 49-1150 User manual

PHOTOFACT*

Fold

er

PHILCO

MODELS

49-1150,

49-1175

TONE

CONTROL

ON-OFF

SWITCH

TUNING

CONTROL

PHONO

BAND

SWITCH

VOLUME

CONTROL

VOLUMECONTROL

ON-OFF

SWITCH

CONTRAST

CONTROLBRIGHTNESS

-CHANNEL

SELECTOR

PHILCO

MODEL

49-1175

TRADE

NAMEPhilco,Models

49-1150,

49-1175

MANUFACTURERPhilcoCorp.,Tioga

&

"C"

Streets,Philadelphia,

Pa.

TYPE

SET

Model

49-1150

TV

only.Model

49-1175

AM-FM-Phono-TV

TUBES

Twenty

Five-Model

49-1150

ThirtyTwo-Model

49-1175

POWERSUPPLY

110-120

Volts

AC

TUNING

RANGE

TV

Channels

2

thru

13

AM

540-1620KC

FM

88-108MC

•

RATING:

(TV)

2.0

Amp.

Volts

AC

(Radio)

.55

Amp.

® 117

Volts

AC

INDEX

Alignment

Instructions

6,7

Block

Diagram

13

DisassemblyInstructions

20

HorizontalHold

Adjustments

27

Parts

List

&

Description

21,22,23,24,25

Photographs

Cabinet-Rear

View

20

Capacitor

Identification

(Radio)

16

Capacitor

Identification

(TV)

11,18

Chassis-Top

View

(Radio)

14

Photographs(continued)

Chassis-Top

View

(TV)

3

RF

Tuner

10

Resistor

Identification

(Radio)

15

Resistor

Identification

(TV)

12,17

Trans.,

Inductor

&

Alignment

Identification

4,9

Schematic

(TV)

2

Schematic

(Radio)

19,26

Tube

PlacementChart

5

Voltage

and

ResistanceMeasurements

8

HOWARD

W.

SAMS

&

CO.,

INC.

•

Indianapolis

7,

Indiana

"Thelisting

ofany

available

replacement

part

hereindoes

not

consthX'e

inany

ca:e

a

recommendation,

warranty

or

guaranty

by

Howard

W.

Sams

&

Co.,

Inc.,

as

tothe

quality

and

suitability

of

such

replacement

part.

The

numbers

of

these

partshave

been

compiled

from

information

furnished

to

Howard

W.

Sams

&

Co.,

Inc.,

bythe

manufacturers

ofthe

particular

type

of

replacement

part

listed."

"Reproduction

or

use,

withoutexpresspermission,

of

editorial

or

pictorial

con-

tent,

m

any

manner,

is

prohibited.

No

patent

liability

is

assumedwithrespect

to

the

useof

the

information

containedherein.Copyright

1949

by

Howard

W.

Sams

&

Co.,Inc.,Indianapolis

7,

Indiana,

U.S.of

America.Copyrightunder

In-

ternational

CopyrightUnion.

All

rights

reserved

underInter-AmericanCopyright

Union

(1910)

by

Howard

W.

Sams

&

Co.,Inc."Printed

inU.S.of

America

DATE

9/494918-6

SET

#70

FOLDER

6

o

*

II

"O

T

S3

SO

A

PHOTOFACTSTANDARD

NOTATION

SCHEMATIC

©Howord

W.

Sams

&

Co.,Inc.1949

PAGE

2

6AU6

AMP

SYNC.

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SEPARATOR

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TO

RADIO

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co

Tl

<

m

ft''*•<

o

(122)

(L2i)

(LIT)

(L20)

(119)

(LIB)

(lj)

(T5)

(L15)

(j

CHASSIS

BOTTOM

VIEW-TRANS.,

INDUC

PAGE

4

.127)

(121)

(114)

(m)

(Jfl)

(L23)

(12)

(V2)

(HO)

JCTOR

AND

ALIGNMENT

IDENTIFICATION

PAGE

9

o

inft

oo

£

N

Ui

TUBE

PLACEMENTCHART

PAGE

5

TV

ALIGNMENT

INSTRUCTIONS

ALIGNMENT

INSTRUCTIONS—

READ

CAREFULLY

BEFORE

ATTEMPTING

ALIGNMENT

Turn

the

AVC

switch

tothe

"off"

position

andsetthe

contrast

control

at

approximately

3/4ofits

rotation

inthe

clockwise

direction.

'

Pull

the

horizontal

oscillator

tube

(7N7-V19)

to

eliminate

the

high

voltage

shock

hazard

during

the

alignment

procedure

.

VIDEO

IF

ALIGNMENT

Remove

the

oscillator

tube(6J6-V3)

and

remove

the

oscillator

clip

coil

ofany

channel

from

the

turret

and

switch

the

tuner

to

that

channel.

Use

an

ungrounded

tube

shield

over

the

mixertube

asa

means

of

injecting

the

signal.

Attenuate

the

signal

generator

soasnotto

exceed

2

volts

onthe

VTVM.

DUMMY

ANTENNA

Tube

Shield

Tube

Shield

Tube

Shield

Tube

Shield

Tube

Shield

Tube

Shield

Tube

Shield

DUMMY

ANTENNA

Tube

Shield

DUMMY

ANTENNA

Tube

Shield

Tube

Shield

SIGNAL

GENERATOR

COUPLING

High

side

toun-

grounded

tube

shield

overmixer

tube

(V2).

Low

side

to

chassis.

"

»

•

»

"

SWEEP

GENERATOR

COUPLING

High

side

toun-

grounded

tube

shield

overmixer

tube

(V2)

.

Low

side

to

chassis.

SWEEP

GENERATOR

COUPLING

High

side

toun-

grounded

tube

shield

overmixer

tube

(V2)

.

Low

side

to

chassis.

SIGNAL

GENERATOR

FREQUENCY

22

.

IMC

(Unmod.

)

24.9MC

(Unmod.

)

28

.

IMC

(Unmod.

)

23.9MC

(Unmod.)

22.

IMC

(Unmod.)

26.

SMC

(Unmod

.

)

25.

SMC

(Unmod.)

CHANNEL

Any

"

11

"

»

"

CONNECT

VTVM

DC

Probe

to

Point

Ql

Common

to

chassis.

»

"

,

OVERALL

VIDEO

IFR

SWEEP

GENERATOR

FREQUENCY

25MC

(10MC

Sweep)

MARKER

GENERATOR

FREQUENCY

22..

IMC

26.6MC

28.

IMC

SOUND

SWEEP

GENERATOR

FREQUENCY

22.

IMC

(IMC

Sweep)

MARKER

GENERATOR

FREQUENCY

22.1M3

CHANNEL

Any

F

ALIGNM

CHANNEL

Any

ADJUST

Al

A2

A3

A4,A5

A6

A7

A8

:SPONSE

CHECK

CONNECT

SCOPE

Vert

.

Amp

.

thru

10K2

resistor

to

points)

Low

side

to

chassis.

ENT

CONNECT

SCOPE

Vert.

Amp.

thru

10K2

resistor

to

Polnt<H>.

Low

side

to

chassis.

REMARKS

Adjust

for

minimum

deflection.

Adjust

for

maximum

deflection.

Adjust

for

minimum

deflection.

Adjust

for

maximum

deflection.

Adjust

for

minimum

deflection.

Adjust

for

maximum

deflection.

Adjust

ADJUST

A1.A2,

A3,A4,

A5.A6,

A7,A8,

A9

ADJUST

A10,A11

A18,A13

for

maximum

deflection.

REMARKS

Adjust

for

pattern

and

placement

of

markers

asperFig1.

REMARKS

Adjust

for

maximum

indications.

Adjust

A12for

maximum

amplitude

and

straightness

of

diagonal

line

going

from

peak

to

peak.

Adjust

A13

so

22.

IMC

marker

is

located

at

center

of

diagonal

line

asperFig

2.

Replace

oscillator

tube(V3).

OSCILLATOR

ALIGNMENT

The

oscillator

alignmentshould

notbe

attempted

until

the

sound

IF

channel

has

been

accurately

aligned

The

tuner

of

this

receiver

will

receiver

eight

ofthe

twelve

available

channels.

The

eight

received

will

depend

upon

the

coils

which

areinthe

tuner.

Donot

attempt

to

align

a

coll

setforany

channel

other

than

that

which

it

is

intended.

The

alignment

outline

below

lists

the

sound

carrier

frequencies

forall

twelvechannels.

Disable

theAFC

systemduring

the

oscillator

alignment

by

temporarily

grounding

Point

C.

The

oscillator

coil

slug

adjustments

are

available

through

the

hole

inthe

front

panel

ofthe

chassis.

As

each

channel

is

switched

in,the

oscillator

coil

slug

for

that

channel

is

in

line

with

the

hole

In

front

ofthe

chassis.

DUMMY

ANTENNA

Two

125S

carbon

res.

SIGNAL

GENERATOR

COUPLING

Acrosshighband

antenna

terminals

with

1252

resistor

in

each

generator

lead.

Across

low

band

antenna

terminals

with1252

resistor

in

each

generator

lead.

SIGNAL

GENERATOR

FREQUENCY

215.75MC

209.75MC

203.75MC

197.75MC

191.75M3

185.75MC

179.75MC

87.75MC

81.75MC

71.751*

65.75MC

59.75M3

CHANNEL

13

11

10

9

8

7

6

5

4

3

2

CONNECT

VTVM

f

Probe

to

Point

Common

to

assis.

ADJUST

414

A15

A16

A17

A18

A

19

A20

A21

A22

A23

A24

A25

REMARKS

Adjust

for

zero

reading.

A

positive

and

negativereading

will

be

obtained

on

either

side

ofthe

correct

setting.

10

11

13,

FIG.

I

FIG.

2

PAGE

6

RADIO

ALIGNMENTINSTRUCTIONS

14

15

16

17

18

19

17

18

19

20

21

22

ALIGNMENT

INSTRUCTIONS-READ

CAREFULLYBEFORE

ATTEMPTINGALIGNMENT

If

alignment

is

tobe

done

on

both

FMand

AM

bands,

the

AM

alignment

should

be

done

first.

Use

Isolation

transformer

If

available.

Ifnot

connect

a

.1MFD

capacitor

In

series

with

low

sloe

of

signal

generator

andB-.

Volume

control

should

beat

maximum

position.

Output

of

signal

generator

should

beno

higher

than

necessary

to

obtain

an

outputreading.

Usean

insulated

alignmentscrewdriver

for

adjusting.

The

calibration

pointsshould

be

marked

by

pencil

onthe

dial

bacKplate

when

the

receiver

Is

removed

from

the

cabinet

The

referencepoint

from

which

the

measurements

are

made

isthe

left

hand

edje

ofthe

dial

backplate.

Pointer

setting

withtuninggang

closed

3

11/16",

1500KC-9

1/16",

1600KC-9

7/16",

92MC-5

5/16",

and

105MC-8

7/16".

AM

ALIGNMENT

DUMMY

ANTENNA

.1MFD

SIGNAL

GENERATOR

COUPLING

High

side

to

terminal

#1of

AM

antennater-

minal

strip.

Low

side

toB-.

Loop

SIGNAL

GENERATOR

FREQUENCY

455KC

1600KC

1500KC

BAND

SWITCH

POS.

AM

»

RADIO

DIAL

SETTING

540KC

1600KC

1500KC

OUTPUT

METER

Across

ter-

minal

12

&

|3

onAM

antenna,

terminal

strip

n

"

ADJUST

A26,

A27,

A28,

A29,

A30,

A31

A32

ASS

REMARKS

Adjust

for

maximum

output.

If

isolation

transformer

isnot

used

reduce

dummy

antenna

to

.001MFD

to

reduce

hum

modulation.

Do

not

repeat

adjustments.

Fashion

loop

of

several

turns

of

wire

and

radiate

signal

Into

loop

of

receiver.

Adjust

for

maximum

output.

Adjust

for

maximum

output.

FM

IF

ALIGNMENTUSING

AM

SIGNALGENERATOR

AND

VTVM

Connect

two

matched

lOOKffl

resistor

(15%)in

series

from

pin2

of

19T8

(V30)

to

chassis.

The

junction

of

these

resistors

Is

alignmentPoint

E as

shown

onthe

schematic.

DUMMY

ANTENNA

.1MFD

SIGNAL

GENERATOR

COUPLING

High

side

to

1

(Grid)

of

6BJ6

(V28).

Low

s ideto

B-.

High

side

topin8

(Grid)

of

7F8

(V26).

Low

side

toB-.

SIGNAL

GENERATOR

FREQUENCY

9.

IMC

(Unmod.

)

11

BAND

SWITCH

POS

FM

"

RADIO

DIAL

SETTING

88MC

11

FM

IF

ALIGNMENTUSING

FM

SIGNA

CONNECT

VTVM

DC

ProJ^e

to

Point<4)>.

Com-

mon

toB-.

it

DC

Probe

to

Point^>

Com-

mon

to

Point

&

ADJUST

A34,

ASS,

A36

A37,

ASS

A39

REMARKS

Adjust

for

maximum

deflection.

n

n n

t>

Adjust

for

zero

reading.

A

positive

and

negativereading

will

beob-

tained

on

either

side

ofthe

correct

setting.

L

GENERATOR

AND

OSCILLOSCOPE

Use

frequencymodulated

signal

with

60%

modulation

and

450KC

sweep.

Use

120%

sawtooth

voltage

in

scope

for

horizontaldeflection.

DUMMY

ANTENNA

.1MFD

.IMF'D

SIGNAL

GENERATOR

COUPLING

High

side

topin1

(Grid)

of

6BJ6

(V28).

Low

side

toB-.

High

side

to

8

(Grid)

of7F8

(V26).

Low

side

toB-.

SIGNAL

GENERATOR

FREQUENCY

9.

IMC

(450KC

Sweep)

DUMMY

ANTENNA

Two

125fi

car

D

on

res.

11

SIGNAL

GENERATOR

COUPLING

Across

pins

1 and4 of

FM

antennasocketwith

125SS

resistor

in

each

generator

lead.

"

SIGNAL

GENERATOR

FREQUENCY

105MC

"

92MC

BAND

SWITCH

POS.

FM

ti

BAND

SWITCH

POS.

FM

"

RADIO

DIAL

SETTING

88MC

FMRF

ALIGN

RADIO

DIAL

SETTING

105MC

"

92MC

CONNECT

SCOPE

Vert.

Amp.

to

Pointer*

Low

side

toB-.

Vert.

Amp.

to

Polnt<J>

Low

side

toB-.

ADJUST

A34,

A35,

A36

A37,

ASS

REMARKS

Disconnect

stabilizer

cap.

(C12)

.

Adjust

for

maximum

amplitude

and

symmetry

asper

Fig

3,

n

Reconnect

stabilizer

cap

(C12).

Adjust

so

crossoverpointoccurs

at

center

of

pattern

asper

Fig

4.

Slightly,

retouch

A34for

maximum

amplitude

and

straightness

of

crossover

lines.

KENT

CONNECT

VTVM

DC

Probe

to

Point<TJ>

Com-

mon

toB-.

"

ADJUST

A40

A41,

A42

L40,

L37,

L35

REMARKS

Adjust

for

maximum

deflection.

Rock

tuning

gang

and

adjust

for

maximum

deflection.

Expand

or

compress

the

coil

turns,

which

ever

is

necessary,

until

the

Insertion

of

either

endofa

tuning

wand

will

cause

a

decrease

In

the

VTVM

reading.Repeat

steps

20,21,

and

22

until

no

further

Improvement

canbe

made.

o

0

m

oo

in

FIG.

3

FIG.4

PAGE?

VOLTAGE

AND

RESISTANCE

MEASUREMENTS

VOLTAGE

READINGS

RESISTANCE

READINGS

Item

V

1

V

2

V

3

V

4

V

5

V6

V7

V

8

V9

V

10

V

11

V

12

V13

V14

V

15

V16

V

17

V

18

V

19

V20

V21

V22

V23

V

24

V25

V26

AV27

AV28

AV29

V30

AV31

V38

Tube

6AG5

6J6

6AG5

6AQ5

6AG5

6AL5

12AU7

7F7

6BA6

6AU6

6AL5

6AU6

6K6GT

7N7

6K6GT

7N7

6BG6

5U4

1B3GT

5U4Q

724

12AU6

14F8

12AU7

6BJ6

19T8

50C6G

10BP4

1

ov

85VDO

-2.8VDC

-.6VDC

-.3VDC

OV

115VDC

6.3VAC

OV

-.4VDC

.1VDC

-.5VDC

OV

6.

3V

AC

6.3VAC

OV

6.3VAC

OV

2

.5VDC

OV

85VDC

1.1VDC

1.1VDO

1VDC

-3.6VDC

-.7VDC

OV

.1VDC

OV

6.3VAC

OV

9VDO

6.

3V

AC

415VDC

3

OV

6.

3V

AC

OV

147V

DO

OV

.8VDC

OV

21

TV

DC

160VAC

320VDC

135VDC

9.3VDC

OV

4

6.

3

VAC

OV

S.3VAC

6.3VAC

.7VDC

6.3VAC

6.3VDC

240VDC

-1VDC

-75VDC

320VDC

-.4VDC

OV

320VDC

5

120VDC

130VDC

.1VDC

125VDC

127VDC

127V

DC

77VDC

1.1VDC

6.

3V

AC

OV

110VDC

50VDC

10VDC

187VDC

OV

-.5VDC

-77VDC

OV

-1.6VDC

-.2VDC

OV

6

137VDC

75VDC

§2VDC

125VDC

127V

DC

127VDC

125VDC

OV

300VDC

OV

110VDC

50VDC

OV

37V

DC

OV

32VDC

450VDC

250VDC'

6.3VAC

140VDC

310VDC

320VDC

7

.5VDC

OV

2.5VDC

1.1VDC

1VDC

-2VDC

-1VDC

.5VDC

1.1VDC

OV

-8.9VDC

OV

6.3VAC

OV

8

12.

5V

AC

OV

28VDC

45VDC

OV

245VDC

415VDC

9

*

*DONOT

MEASURE.

OV

6.3VAC

.4VDC

§-1.3

VDC

41VDC

OV

-.5VDC

OV

350VDC

OV

.TV

DC

32.

5V

AC

§-2VDC

2.2VDC

.9VDC

-1.1

VDC

117VAC

.2VDC

OV

230VAC

44VAC

120VDC

2.9VDC

55VDC

61VDC

-1.4VDC

200VDC

10

250VDC

350VAC

OV

55VDC

3.2VDC

44VAC

61VDC

j

67VDC

OV

157VDC

11

125VDC

OV

210VDC

4.8VDC

32.5VAC

145VDC

200VDC

20VAC

OV

12

6.3VDC

350VAC

230VAC

165VDC

107VDC

125VDC

J

145VDC

123VDC

-.7VDC

OV

ov

165VDC

5V

DC

20VAC

OV

1.7VTJC

OV

S7VAC

350VDC

OV

2.5VDC

6.8VDC

-.7VDC

12.5VDC

65VDC

Item

VI

V

2

V

3

V

4

V5

V

6

V7

ve

V9

V

10

VII

V

12

V13

VU

V15

V

16

V17

V18

V

19

V20

V21

V22

V23

V24

V25

V26

AV27

AV28

AV29

V30

AV31

V32

Tube

6A05

6AG5

6J6

6AQ5

6AG5

6AQ5

6AL5

12AU7

7F7

6BA6

6AU6

6AL5

6AU6

6KSGT

7N7

6K6QT

7N7

6BG6G

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1

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68K2

Inf.

4.7

Meg.

Inf.

.12

.18

Inf.

.12

Inf.

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1

Meg.

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»

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02

oa

2

4?a

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*8K2

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•

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10K2

1.5K2

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.532

42752

•270K2

*Do

Not

Measure.

A

B -

Line

At

SwitchUsed

As

Negative.

1.DC

Voltage

measurements

oreat

20,000

ohms

per

volt;

AC

Voltage

measured

at

1,000

ohms.

2.Pin

numbers

are

counted

ina

clockwise

direc-

tion

on

bottom

of

socket.

3.

Measured

values

are

from

socket

pin to

com-

mon

negative

unless

otherwisestated.

4.

Line

voltage

maintained

at

117

volts

for

volt-

age

readings.

5.

Front

panels

controls

setat

minimum.

6.

Where

readings

may

varyaccording

tothe

setting

ofthe

service

controls,

both

minimum

and

maximumreadings

are

given.

t

Measured

From

7 Of

V24.

t

Measured

From

8 Of

V23.

•

Measured

From

8 Of

V21.

•

Measured

From

Output

OfM2.

A

B -

Line

At

Switch

Used

As

Negative

RF

TUNER-BOTTOM

VIEW

CHASSISBOTTOM

VIEW-CAP

PAGE

18

^PACITOR

IDENTIFICATION

PAGE

11

cr

i

o

DO

GO

co

oo

<

I

U

-RESISTOR

IDENTIFICATION

PAGE

17

AFAMP

AF

OUTPUT

1st

SOUND

IF

2nd

SOUND

IF

1st

VIDEO

IFAMPV4

2nd

VIDEO

IFAMPV5

3rd

VIDEO

IFAMP

4th

VIDEO

IFAMP

VIDEO

AMP.

&

VIDEO

OUTPUT

V9

RF

AMP.

MIXER

OSC&

AFC.

VIDEODET.

&

AGC

DC

RESTORER

1/2

VI0

VERT.

OSC&

DISCHARGE

VI7

VERT.OUTPUT

V18

AM-FMRADIO

V25-V31

SYNC

PRE--AMP

&

SYNC

SEP.

V16

SYNC

AMP.

1/2V10

HORIZ.AFC,

HORIZ.

OSC.

&

DISCHARGE

RECTIFIER

PHILCO

49-1175

BLOCK

DIAGRAM

'osiL-6fr

siaaow

ODIIHd

RADIO

CHASSIS-TOP

VIEW

RADIO

CHASSIS-BOTTOM

VIEW-RESISTOR

AND

ALIGNMENT

IDENTIFICATION

siaaow

ODIIHd

RADIO

CHASSIS-BOTTOM

VIEW-CAPACITOR

IDENTIFICATION

Philco PHOTOFACT 49-1150 User manual

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