RCA Victor 730TV1 User manual

PBOTOFACT* Fold er
RCA VICTOR
MODELS 73OTV1, 73OTV2,
(Ch.KCS27-1)
VERT. HORIZ.
HOLD
BRIGHTNESS
CONTRAST CONT,
CHANNEL SELECTOR
FINE TUNING
VOL CONTTONE SW.
ON-OFF SW.
RCA VICTOR MODEL 750TV1
RADIO TUNING
TRADENAME RCA Victor,Models 730TV1, 730TV2(Ch. KCS 27-1)
MANUFACTURER RCA Victor Dlv., RadioCorp. of America,Camden, New Jersey
TYPE SET AM-FM-Phono-TV Receiver
TUBES Thirty
POWER SUPPLY 115 Volts-60 Cycles AC
TUNINGRANGE TV Channels 1 thru 13 (44-88MC, 174-216MC)
AM 540-1600KC
FM 88-108MC
RATING: TV 2.44 Amp.
Radio .6 Amp.
117 Volts AC
D 117 Volts AC
Alignment Instructions
BlockDiagram
DisassemblyInstructlonsl
Horlz. Osc. & LinearityAdjustments
Parts List and Description 13,
Photographs
Cabinet-Rear View
Capacitor Identification (Radio)
Capacitor Identification (TV)
Chassis-Top View(Radio)
INDEX
6,7,8 Photographs (continued)
21
16
24
14,15,16
24
20
11,18
22
Chassis-Top View (TV)
RF Tuner
Resistor Identification (Radio)
Resistor Identification (TV)
Trans., Inductor and Alignment
Identification
Schematic (TV)
Schematic (Radio)
Tube PlacementChart
Voltage & ResistanceMeasurements
3,23
10
25
12,17
4,9
2
19,26
5
27
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N o
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HOWARD W. SAMS & CO.,INC. • Indianapolis 7, Indiana
"Thelisting ofany available replacement part hereindoes not constitute inany
case a recommendation,warranty or guaranty by Howard W. Sams & Co., Inc.,
as tothe quality and suitability of such replacement part. The numbers of these
parts have been compiled from information furnished to Howard W. Sams & Co.,
Inc., bythe manufacturers ofthe particulartype of replacement part listed."
"Reproduction or use,without express permission, of editorial or pictorialcon-
tent, inany manner, is prohibited. No patent liability is assumed with respect to
the useofthe informationcontainedherein.Copyright 1949 by Howard W.
Sams & Co., Inc., Indianapolis 7, Indiana, U. S.of America.Copyright urtder In-
ternational Copyright Uniorv. All rightsreservedunderInter-AmericanCopyright
Union (1910) by Howard W. Sams & Co.,Inc."Printed inU.S.of America
DATE 9/494918-7 SET#70 FOLDER 7*

THE COOPERATION OFTHEfc
RECEIVER MAKES IT POSSIBLE TO
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A PHOTOFACT STANDARD NOTATION SCHEMA
©Howard W. Sams & Co.,Inc.1949
PAGE 2

THE MANUFACTURER OF THIS
iLE TO BRING YOU THIS SERVICE

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PAGE 4

CTOR AND ALIGNMENT IDENTIFICATION
PAGE 9

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TV ALIGNMENT INSTRUCTIONS
ALIGNMENT INSTRUCTIONS-READ CAREFULLY BEFOREATTEMPTINGALIGNMENT
If receiver Is tobe aligned with picture tube removed, it Is recommended to also remove the 6SN7GT (V15) hori-
zontal oscillator tube to eliminate high voltage shock hazard.
When complete alignment Is tobe performed, It can most conveniently be done In the orderoutlined;
SOUND IF ALIGNMENTUSING
DUMMY
ANTENNA
.05MFD
.05MFD
.05MFD
SIGNAL
GENERATOR
COUPLING
High side to pin 1
(Grid) of 6AU6 (V10)
Low side to chassis,
n
High side to pin 1
(Grid) of 6BA6 (V9).
Low side to chassis.
SIGNAL
GENERATOR
FREQUENCY
21.25MC
(Uranod.)
"
"
CHANNEL
13
n
n
AM SIGNALGENERATOR AND VTVM
CONNECT
VTVM
DC Probe thru 1
Meg to Polnt^
Common to chassis.
DC Probe thru 1
Meg to Point<E»
Common to chassis,
DC Probe thru.J.
Meg to Point <£>
Common to chassis.
ADJUST
A1.A2
Al
A3,A4
SOUND IF ALIGNMENTUSING FM SIGNAL GENERATOR
Connect the synchronized sweep voltage from the signal
for horizontaldeflection.
DUMMY
ANTENNA
.05MFD
.05MFD
SWEEP
GENERATOR
COUPLING
High side to pin 1
(Grid) of 6BA6
(V9). Low side to
chass Is .
n
SWEEP
GENERATOR
FREQUENCY
21.25MC
(IMC
Sweep )
n
MARKER
GENERATOR
FREQUENCY
21.25MC
n
CHANNEL
13
it
REMARKS
Detune Al. Adjust A2for maximum deflection.
Adjust for zeroreading. A positive and
negative reading will be obtained on either
side ofthe correct setting.
Adjust for maximum deflection.
AND OSCILLOSCOPE
generator tothe horizontal Input ofthe oscilloscope
CONNECT
SCOPE
Vert. Amp. to
Polnt«a Low
side to chassis.
Vert. Ami. to
Polnt^p Low
side to chassis.
ADJUST
A3,A4
A1.A2
VIDEO IF ALIGNMENT
REMARKS
If 60% sweep rate Is usedshunt R50
with 5600S. Adjust A3andA4for
maximum amplitude and symmetry as
per Fig1.
Adjust A2for maximum amplitude
and stralghtness of diagonal line
asper Fig 2. Adjust Also 21.25M2
marker is at center of diagonal
line. Continue with step 4.
Before starting video IF alignment connect VTVM between Junction ofR25andR26and chassis. Adjust contrast
control to give VTVM reading of -3V. Leave contrast control at this setting for entire video IF alignment.
Remove 6J6 local oscillator tube V3 to preventerroneousIndications.
DUMMY
ANTENNA
SIGNAL
GENERATOR
COUPLING
High side toun-
grounded tube
shield floating
over mixer tube
(V2). Low side to
chassis.
n
it
n
n
»
SIGNAL
GENERATOR
FREQUENCY
21.25MC
27.25MC
22. SMC
23.9MC
26.0MC
24. SMC
CHANNEL
13
"
n
"
It
"
CONNECT
VTVM
DC Probe to Point
GJ> Common to
Chassis.
"
"
it
»
n
ADJUST
A5,A6
A7
AS
A9
AID
All
REMARKS
Adjust for minimum deflection.
Adjust for minimum delfectlon. (Some
models maynot have this trap.)
Adjust for maximum deflection.
nn IIn
n it IIn
nnn
OVERALL VIDEO IF RESPONSE CHECK
Connect the synchronized sweep voltage from the signal generator tothe horizontalInput ofthe oscilloscope
for horizontaldeflection.
DUMMY
ANTENNA
SWEEP
GENERATOR
COUPLING
High side toun-
grounded tube
shield floating
overmixertube
(V2). Low side to
chassis .
SWEEP
GENERATOR
FREQUENCY
24MC
(10MC
Sweep)
MARKER
GENERATOR
FREQUENCY
21.25MC
23. CMC
25.0MC
25.75MC
27.25MC
CHANNEL
13
CONNECT
SCOPE
Vert . Amp . to
Point <^> Low
side to chassis.
ADJUST REMARKS
Check response curve obtained on
scope. If necessary., slightly re-
touch A5 thru Allfor proper wave
shape and placement of markers as
per Fig 3.
1.
2.
3.
1.
2.
4.
5.
6.
7.
10.
RF AMP. 8. MIXER ALIGNMENT
i Before starting RF alignment connect VTVM to junction ofR25andR26and chassis and adjust contrast control
to give VTVM reading of -IV. Leave contrastcontrol at this setting for entire RF alignment.
Connect a 1000MMFD capacitor from pin1 of 6AG5 1st Video IF Amp (V4) to chassis.
DUMMY
ANTENNA
Two 120S
carbon
res.
n
SWEEP
GENERATOR
COUPLING
Across antenna ter-
minals with 1202
resistor In each
generator lead.
"
SWEEP
GENERATOR
FREQUENCY
177MC
(ion;
Sweep)
183M3
(10MC
Sweep)
189M3
(10MC
Sweep)
195MC
(10MC
Sweep)
201MC
(10MC
Sweep)
207fC
(10MC
Sweep)
213MC
(10MC
Sweep)
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
CHANNEL
'
8
9
10
11
12
13
CONNECT
SCOPE
Vert . Amp . thru
10KS2 to Point
<!fft Low side to
chassis .
n
ADJUST
A13,A13
A14,A15
REMARKS
Adjust for approximately flat top-
ped response curve asper Fig 4.
Markers must be above 705S. Keep
slug pairs in same relative posi-
tions.
Check tosee that response isas
above. Slight readjustment of A12,
A13,A14,A15 maybe necessary to
obtain optimum response forall
high band channels.
12.
PAGE 6

TV ALIGNMENT INSTRUCTIONS CCONTJ
13.
14,
15.
16.
17.
18.
DUMMY
ANTENNA
SWEEP
GENERATOR
COUPLING
SWEEP
GENERATOR
FREQUENCY
85MC
(10MC
Sweep)
79MC
(10MC
Sweep)
69MC
(10MC
Sweep)
63MC
(10MC
Sweep)
57MC
(10MC
Sweep)
MARKER
GENERATOR
FREQUENCY
83.25MC
87.75MC
77.25MC
81.75MC
67.25MC
71.75MC
31.25MC
65.75MC
55.25MC
59.75MC
CHANNEL
6
5
4
3
2
CONNECT
SCOPE
ADJUST
A16,A17
A18,A1£
REMARKS
Adjust for approximately flat
topped response curve asper Fig 4.
Markers must be above 70%. Keep
slug pairs In approximately same
relative position.
Check tosee that response Is as
above. Slight readjustment of A16,
A17,A18,A19 maybe necessary to
obtain optimum performance onall
low band channels.
OSCILLATOR ALIGNMENT
Replace oscillator tube(V3).
Set fine tuningcontrol totheraid-pointof Its tuning range.
The sound IF system must be accuratelyaligned before starting the oscillator alignment.
DUMMY
ANTENNA
Two 120S
carbon
res .
ti
n
SIGNAL
GENERATOR
COUPLING
Across antenna ter-
minals with 120S
resistor In each
lead.
n
n
SIGNAL
GENERATOR
FREQUENCY
215.75MC
209.75MC
203. 75MC
197.75MC
191.75MO
185.75MC
179.75MC
87.75MC
81.75MC
71.75MC
65.75MC
59.75MO
CHANNEL
13
12
11
10
9
8
7
6
5
4
3
2
CONNECT
VTVM
DC Probe thru 1
Meg to Point <K>
Common to chassis.
ADJUST
A20,A21
A22
A23
A24
A25
A26
A27
A28
A29
A30
A31
A32
ASS
REMARKS
Adjust for zeroreading. A positive and
negative reading will be obtained on
either side ofthe correct setting. Keep
slug pairs In same relative position.
Adjust for zeroreading. A positive and
negativereading will be obtained on either
side ofthe correct setting.
Adjust for zeroreading. A positive and
negative reading will be obtained on either
side ofthe correct setting. Keep slug
pairs In same relative position.
Adjust for zeroreading. A positive and
negativereading will be obtained on either
side ofthe correct setting.
WAVE TRAP ADJUSTMENT
Wave traps A34and ASS are used for specific types of Interference and their alignment will depend upon the type
encountered. With the receiver t uned tothe channel having the Interference set fine tuning control until Interference
Is at maximum. Adjust A34andA35for minimum Interference In the picture and sound. Keeping the cores at approxim-
ately the same relative position. Turn one core 1/2 turn, adjust the other for minimum Interference.
o
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m
BSQ
3*38
to
FIG. I
FIG. 2
FIG.3
FIG. 4
PAGE?