RCA 730tv schematic

PBOTOFACT*

VERT.

HORIZ.

HOLD

BRIGHTNESS

CONTRAST

CONT,

Fold

er

MODELS

RCA

VICTOR

73OTV1,

73OTV2,

(Ch. KCS27-1)

CHANNEL SELECTOR

FINE

TUNING

TRADE NAME
MANUFACTURER
TYPE

TUBES

POWER
TUNING RANGE

Alignment

RCA

SET

AM-FM-Phono-TV

Thirty

SUPPLY

Victor, Models

RCA

Victor

115

Volts-60

TV

Channels 1 thru

AM

540-1600KC

FM

88-108MC

Instructions

Block Diagram

Disassembly Instructlonsl

Horlz.

Osc. & Linearity Adjustments

Parts

List

and

Description

Photographs

Cabinet-Rear
Capacitor
Capacitor
Chassis-Top

View
Identification
Identification

View (Radio)

VOL

CONT TONE

ON-OFF

RCA

730TV1,

Dlv.,

Radio Corp.

Receiver

Cycles

AC

13

13,

(Radio)
(TV)

SW.

VICTOR

MODEL

730TV2 (Ch.

of

(44-88MC,

INDEX

6,7,8

21
16
24

14,15,16

24
20

11,18

22

SW.

750TV1

KCS

27-1)

America, Camden,

174-216MC)

Photographs

Chassis-Top
RF

Tuner
Resistor
Resistor
Trans.,

Identification
Schematic
Schematic
Tube

Placement Chart

New

Jersey

RATING:

TV

Radio

(continued)

View

(TV)

Identification
Identification

Inductor

and

(TV)
(Radio)

2.44
.6

Alignment

Voltage & Resistance Measurements

RADIO

Amp.

Amp.

(Radio)
(TV)

TUNING

117

Volts

D

117

Volts

AC

AC

3,23

25

12,17

4,9

19,26

27

O

o

m

N

o

K>

10

2

5

HOWARD

"The listing

of any

available
case a recommendation, warranty
as

to the

quality

have

and

been

compiled

manufacturers

or

parts
Inc.,

by the

"Reproduction

suitability

from

of the

use, without

replacement

express

part

or

guaranty

of

such

replacement

information

particular type

permission,

W.

SAMS & CO., INC. • Indianapolis

tent,

herein does

by

furnished

of

Howard

part.

to

Howard

replacement

of

editorial

not

constitute

W.

Sams & Co.,

The

numbers

W.

or

in any

Inc.,

of

these

Sams & Co.,

part

listed."

pictorial con-

in any

the

use of the
Sams & Co.,
ternational
Union

(1910)

7,

Indiana

manner,

is

prohibited.

No

patent

information contained herein. Copyright

Inc.,

Indianapolis

Copyright

by

Howard

7,

Uniorv.

All

W.

Sams & Co., Inc." Printed

DATE

9/49 4918-7

liability

Indiana,

U.

rights reserved under Inter-American Copyright

S. of

is

assumed

with

1949

America. Copyright

SET #70

by

in U. S. of

FOLDER

respect

Howard

urtder

America

W.

7*

to

In-

THE

COOPERATION

RECEIVER

MAKES

IT

POSSIBLE

OF THE fc

TO

PAGE

2

®

5U46

«" ® RECW.E

-Y

BLK.-BRN.

*-l

BLUE

A

PHOTOFACT

STANDARD

©Howard

1

®4f

* 4

I M

NOTATION

W.

Sams & Co., Inc. 1949

SCHEMA

THE

MANUFACTURER

iLE

TO

BRING

YOU

OF

THIS

THIS

SERVICE

BIAS

CLAMPER

®6ATB

o

a

m

to

VIEW

TOP

CHASSIS

siaaow

*HD)

VDM

'LAIOC/

UO13IA

o

m

OJ

.•;---

*7

'

»

\•

PAGE

4

CHASSIS

BOTTOM

VIEW-TRANS.,

INDUCTO

CTOR

AND

ALIGNMENT

IDENTIFICATION

PAGE

9

VIEW
TOP

siaaow

'LAIOCZ

PUT

OUT

R.
HO

XCT\

VIDCOIF

3Rt3

BAGS]

TUBE PLACEMENT CHART

"

VIEW

\

^\

\O;

s'

\/

\'

BOTTOM

o

O

m

Cn

If

receiver

zontal

oscillator

When

complete

DUMMY

ANTENNA

High

.05MFD

1.

2.

3.

ANTENNA

1.

2.

ANTENNA

4.

5.

6.

7.

ANTENNA

10.

i

ANTENNA

12.

Before

(Grid)

Low

.05MFD

High

.05MFD

(Grid)

Low

Connect

for

DUMMY

.05MFD

.05MFD

control

DUMMY

for

DUMMY

to

DUMMY

Two
carbon
res.

the

horizontal deflection.

High

(Grid)
(V9).

chass

Before

starting

to

give

Remove

6J6

High
grounded

shield
over

(V2).

chassis.

Connect

horizontal deflection.

High
grounded
shield
over mixer tube

(V2).

chassis

starting

give

VTVM

Connect a 1000MMFD

Across

120S

minals
resistor
generator

n

Is

to be
tube

alignment

SIGNAL

GENERATOR

COUPLING

side

to

of

6AU6

side

to

n

side

to

of

6BA6

side

to

synchronized

SWEEP

GENERATOR

COUPLING

side

to

of

6BA6
Low
Is

.

n

VTVM

local

SIGNAL

GENERATOR

COUPLING

side

to un-

tube

floating

mixer

Low

n

it
n
n

»

the

synchronized

SWEEP

GENERATOR

COUPLING

side

to un-

tube

floating

Low

.

reading

SWEEP

GENERATOR

COUPLING

antenna
with

In

lead.

"

aligned

to

eliminate

pin

1

(V10)

chassis,

pin

1

(V9).

chassis.

pin

1

side

to

video

IF

reading

oscillator

tube
side

to

side

to

RF

alignment

of

-IV.

capacitor

ter­ 1202
each

TV

ALIGNMENT

with

Is

to be

SOUND

SIGNAL

GENERATOR

FREQUENCY

21.25MC
(Uranod.)

"

"

SOUND

sweep

voltage

SWEEP
GENERATOR
FREQUENCY

21.25MC

(IMC

Sweep

n

alignment

of

-3V.

tube

SIGNAL
GENERATOR
FREQUENCY

21.25MC

27.25MC

22.

SMC

23.9MC

26.0MC

24.

SMC

sweep

voltage

SWEEP
GENERATOR
FREQUENCY

24MC

(10MC

Sweep)

connect

Leave

from

SWEEP
GENERATOR
FREQUENCY

177MC

(ion;

Sweep)

183M3

(10MC

Sweep)

189M3

(10MC

Sweep)

195MC

(10MC

Sweep)

201MC

(10MC

Sweep)

207fC

(10MC

Sweep)

213MC

(10MC

Sweep)

ALIGNMENT

INSTRUCTIONS-READ

picture
high
performed,

V3

contrast control

tube

voltage

IF

ALIGNMENT USING

CHANNEL

13

n

n

IF

ALIGNMENT USING

from

MARKER
GENERATOR
FREQUENCY

21.25MC

)

n

connect

Leave

contrast

to

prevent erroneous Indications.

CHANNEL

13

"

n

"
It

"

OVERALL

from

MARKER
GENERATOR
FREQUENCY

21.25MC

23.

CMC

25.0MC

25.75MC

27.25MC

RF

AMP.

VTVM

pin 1 of

MARKER
GENERATOR
FREQUENCY

175.25MC

179.75MC

181.25M3

185.75MC

187.25MC

191.75MC

193.25MC

197.75M3

199.25MC

203.7SMC

205.25MC

209.75MC

211.25MC

215.75MC

removed,

shock

It

can

DC
Meg
Common

DC
Meg
Common

DC
Meg
Common

the

CHANNEL

VIDEO

VTVM

DC

GJ>

Chassis.

VIDEO

the

CHANNEL

8.

to

junction

6AG5

CHANNEL

CAREFULLY

it

hazard.

most

conveniently

AM

CONNECT

VTVM

Probe

thru

to

Polnt^
to

chassis.

Probe

thru

to

Point<E»

to

chassis,

Probe

thru.J.

to

Point

to

chassis.

FM

signal

13

Vert.

it

Vert.

IF

ALIGNMENT

between

Junction

control

CONNECT

VTVM

Probe

to

Common

"

"

it

»
n

IF

RESPONSE

signal

generator

13

MIXER

ALIGNMENT

of R25 and R26 and

at

this

1st

Video

Vert . Amp . thru

'

<!fft

8

9

10

11

12

13

INSTRUCTIONS

BEFORE ATTEMPTING ALIGNMENT

Is

recommended

SIGNAL GENERATOR

ADJUST

A1.A2

1

Al

1

A3,A4

<£>

SIGNAL

GENERATOR

generator

Polnt«a
side

Polnt^p
side

at

Point

to

Vert . Amp . to
Point
side

10KS2
chassis

to the

CONNECT

SCOPE

Amp.

Low

to

chassis.

Ami.

to

Low

to

chassis.

of R25 and R26 and

this

setting

ADJUST
A5,A6

A7

AS
A9
AID
All

CHECK

to the

CONNECT

SCOPE

<^>

Low

to

chassis.

setting

IF

Amp

CONNECT

SCOPE

to

Point

Low

side

.

n

to

be

done

AND

Detune

Adjust

negative
side

Adjust

AND

horizontal

ADJUST

A3,A4

to

A1.A2

for

Adjust

Adjust
models

Adjust

horizontal Input

ADJUST

chassis

for

entire

(V4)

to

chassis.

ADJUST

A13,A13
A14,A15

to

also
In

the

VTVM

Al.

for

reading

of the

for

OSCILLOSCOPE

with
maximum
per

Adjust
and
as per
marker

entire

for

for

may not

for

n n II n

n

it

n

and

RF

alignment.

Adjust
ped
Markers
slug
tions.

Check
above.

A13,A14,A15

obtain
high

remove

the

6SN7GT

(V15)

order outlined;

REMARKS

Adjust

A2 for

maximum

zero reading. A positive

will

be

correct

maximum

Input

If

60%

sweep

5600S.

amplitude

Fig 1.

A2 for

stralghtness

Fig
is

line.

Continue

chassis.
video

minimum

minimum

have

maximum

II n

n n

Check

response

scope.

If

touch

A5

shape

and

per

Fig

3.

adjust

for

response

must

pairs

to see

Slight

optimum

band

obtained

setting.

deflection.

of the

oscilloscope

REMARKS

rate

Is

Adjust

A3 and A4 for

and

maximum

of

2.

at

IF

REMARKS

diagonal

Adjust

center

of

with

Adjust

alignment.

deflection.

delfectlon.

this

trap.)

deflection.

of the

oscilloscope

REMARKS

curve

necessary.,

thru

All for

placement

of

contrast

REMARKS

approximately

curve

as per

be

above

in

same

relative

that

response

readjustment

may be

necessary

response

channels.

used shunt

symmetry

amplitude

Al so

diagonal

step
contrast

(Some

obtained

slightly
proper

markers

control

705S.

for all

hori-

deflection.

and

on

either

R50

as

line

21.25M2

4.

on

re-

wave

as

flat

top-

Fig

4.

Keep

posi-

is as

of

A12,

to

PAGE

6