1952 RCA 21T176 - Early Television Foundation

PHOTO FACT* Folder
RCA
MODELS 21T176, 21T177, 21T178, 21T179
VERT.
HOLD
CONTROL
HORIZ.
HOLD
CONTROL
o
om
to
CONTRAST;
CONTROL
3 N
10
BRIGHTNESS
CONTROL
VOLUME
CONTROL
ON-OFF SW
TV-PHONO
TONE
CONTROL
STATION
SELECTOR
SWITCH
FINE
TUNING
RCA Victor 21TI78
TRADE NAME RCA Victor Models 21T176, 21T177, 21T178, 21T179, (Chassis KCS68C,CB)
MANUFACTURER RCA Victor Div., Radio Corp. of America, Camden, N. J.
TYPE SET Television Receiver
TUBES
Twenty Five
N
CO
K>
POWER SUPPLY 110-120 Volts AC - 60 Cycle
TUNING RANGE—Channels 2 thru 13
RATING 2.7 Amp.
INDEX
Alignment Instructions ............ . 6, 7
Disassembly Instructions 8
Horizontal Sweep Circuit Adjustments 10
Parts List and Descriptions 13 t hru 16
Photographs
Cabinet - Rear View .10
Capacitor and Alignment Identification 4,9
Chassis - Top View 3
Photographs (cont.)
High Voltage Supply 18
RF Tuner .. 11,18
Resistor and Inductor Identification 12,17
Resistance Measurements 8
Schematic 2
Tube Placement Charts 5
HOWARD W. SAMS & CO., INC. • Indianapolis S, Indiana
"The listing of any available replacement part herein does not constitute in any
case a recommendation, warranty or guaranty by Howard W. Sams & Co., Inc.,
as to the quality and suitability of such replacement part. The numbers of these
parts have been compiled from information furnished to Howard W. Sams & Co.,
Inc., by the manufacturers of the particular type of replacement part listed."
"Reproduction or use, without express permission, of editorial or pictorial content,
in any manner, is prohibited. No patent liability is assumed with respect to
the use of the information contained herein. Copyright 1952 by Howard W.
Sams & Co., Inc., Indianapolis 5, Indiana, U. S. of America. Copyright under International
Copyright Union. All rights reserved under Inter-American Copyright
Union (1910) by Howard W. Sams & Co., Inc." Printed in U. S. of America
DATE 1-52 SET 157 FOLDER 8

CHANNEL SELECTION SWITCH
SHOWN IN CHANNEL 2 POSITION
THE COOPERATION OF THE MANUFACTURER OF THIS
RECEIVER MAKES IT POSSIBLE TO BRING YOU THIS SERVICE
©
LV RECT
5U4G
o I6ji_ •
0 RED-CRN
BLUE YEL
O 6.3 VAC
O BLUE
-U
&v_y
3 70 VAC
TV-PHONO TONE
IN TV. MIN. HIGH
SWITCH SEQI
I - TV MIN. NIC
2-TV NORMA
3-TV MIN.LO
A- PHONO Mil
5- PHONO NO
6- PHONO Mil
GRN
0
O 6.3 VAC
O
V ^j
CRN-RED
BUN
A MEASURED WITH
• MEASURED FROM
O 1 1 6.3WC 3Ecr (
#Ft
A PHOTOFACT STANDARD NOTATION SCHEMATIC
©Howard W. Sams & Co., Inc. 1952
PAGE 2

4TH VIDEO IF
©6CB6
HORIZ SYNC AMP
i;)6SN7GT
(ran) j @® VERT SfflC AMP ©6SN7GT
VW-K 4-WV-l
VERT. HOLD .
CONTROL
(fHlJ
EG
HEIGHT
CONTROL
PHONO TONE SWITCH SHOWN
TV, WIN. HIGHS POSITION
SWITCH SEQUENCE
I- TV MIN. HIGHS
Z-TV NORMAL.
5- TV MIN. LOWS
4- PHONO MIN. HIGHS
5- PHONO NORMAL
5- PHONO MIN.LOWS
0v HORIZ OUTPUT
PiP ©6CD6G
SURED WITH VTVM
SUREO FROM 130 VOLT LINE

MODELS 2TT176, 21T177, 21T178, 21T179

CHASSIS TOP VIEW
PAGE 3

PAGE 4
CHASSIS BOTTOM VIEW-CAPACITOR

OR AND ALIGNMENT IDENTIFICATION
PAGE 9

3 s
§
TOP VIEW
TUBE PLACEMENT CHART
PAGE 5

ALIGNMENT INSTRUCTIONS
1.
2.
3.
4.
5.
6.
1.
8.
9.
DUMMY
ANTENNA
Direct
.005MFI
Direct
ALIGNMENT INSTRUCTIONS—READ CAREFULLY BEFORE ATTEMPTING ALIGNMENT
The high voltage shock hazard may be eliminated by removing the horizontal oscillator tube, (V18), from its socket.
VIDEO IF ALIGNMENT
Connect the ends of a IOOOS1 potentiometer across a 7.5 Volt battery capable of withstanding considerable current drain. Connect the positive end
of the battery to chassis. Connect the center arm of the potentiometer to the junction of R95 & R96.
Connect the synchronized sweep voltage from the signal generator to the horizontal input of the oscilloscope for horizontal deflection.
SIGNAL
GENERATOR
COUPtING
High side to terminarA
of L24. Low side to
chassis.
••
High side to pin 1 (grid)
of 6AU6, (V3). Low
side to chassis.
High side to point F .
Low side to chassis.
SIGNAL
GENERATOR
FREQUENCY
Not Used
"
"
"
"
44MC
(10MC Swp)
MARKER
GENERATOR
FREQUENCY
39. 75MC
41.25MC
47.25MC
43.7MC
45. SMC
41. BMC
42.15MC
45MC
45.75MC
46. SMC
42.25MC
M.5MC
42.25MC
45MC
45.75MC
CHANNEL
4
"
Any
channel
which cau
ses no
interference.
SOUND IF ALIGNMENT
CONNECT
SCOPE
Use VTVM
DC probe to pqint.
Common to chassis.
"
"
Vert. Amp. to point
C^ Low side to chas-
•sis.
Vert. Amp. thru detector
probe, (fig. 2)
to pin 5 oteAUB (V3).
Low side to chassis.
Vert. Amp. to point
^^ Low side to chassis.
Connect the oscilloscope across the speaker voice coil to use as an output indicator.
Turn the trimmer A16 for minimum capacity.
DUMMY
SIGNAL
SIGNAL
CONNECT
GENERATOR GENERATOR CHANNEL
ADJUST
ANTENNA
VTVM
COUPLING
FREQUENCY
. 005MFD
High side to pin 1 (grid)
of 6AU6, (V10). Low
side to chassis.
4. SMC
(4001. AM
mod)
Any
DC probe to point.
Common to chassis.
A14
A15
ADJUST
Al
A2
A3
A4
A5
A6
A7,A8
A9.A10
REMARKS
Set bias pot. to -IVolt. Adjust for MINIMUM
deflection. Attenuate signal gen. to maintain
-IVolt reading.
Adjust for maximum deflection. Attenuate
signal gen. to maintain 1 volt reading.
Connect 330ft resistor across R37, R38 and
terminals 'A* and 'F'of M6. Adjust for response
curve similar to fig. I. Attenuate
sweep gen. to maintain . 5 volt peak to peak
response.
Leave 330S2 resistors connected. Connect a
180fi resistorbetween pin 5 of V3 and junction
ot R29 and C40. Adjust lor response similar
to fig. 3.
Remove all damping resistors. Set IF bias
to -6 volts. Check for response curve similar
to fig. 4. If necessary retouch A4 and A5 for
proper response. Retouch A6 only if absolutely
necessary. Incorrect adjustment of A6 will
interfere with trap action.
REMARKS
Adjust for maximum deflection on VTVM. Adjust signal
gen. to obtain 10 volt reading.
Adjust for MINIMUM 400ft. indication on scope. Repeal
steps 10 and 11.
F IG
FIG
DC probe to pcint.
Common to chassis.
A16
Check the voltage at polnt. If the voltage exceeds t
1. 5 volts, adjust A16 for zero voltage on VTVM between
positive and negative peaks. Repeat adjustment of A15
and A16 until VTVM reads less than -1.5 volts with
A15 adjusted for MINIMUM 4001. indication on scope.
14. See Fig. 6
High side to point A .
Low side to chassis.
4. SMC
(IMC Swp)
USE SCOPE
Vert. Amp. thru 10KSJ
to poinKQ>. Low side
to chassis.
A17.A18
A19
ANTENNA MATCHING UNIT ALIGNMENT
Adjust for maximum amplitude and symmetry as per
Fig. 5.
This unit has been properly aligned at the factory and is very stable. Alignment should not be attempted unless it has been definitely established
that it is out of alignment and proper equipment is available to align it. The required equipment consists of a sweep generator capable of at least
1 volt output, and an oscilloscope with a sensitivity of at least .02 Volts per inch. Misalignment of this unit can cause serious attenuation of the
signal especially on channel 2. Adjustment of the FM trap, (A43), however will not effect the alignment.
In the event of replacement of the antenna matching unit, the entire tuner should be realigned. -
Disconnect the FM trap, L8, from the channel selector switch. The free end of L8 is alignment Point

JCTIONS
ORE ATTEMPTING ALIGNMENT
tl oscillator tube, (V18), from its socket.
of withstanding considerable current drain. Connect the positive end
junction of R95 & R96.
zontal input of the oscilloscope for horizontal deflection.
•JNECT
:OPE
'M
e to pqinKg>.
to chassis.
'
'
ADJUST
Al
A2
A3
A4
REMARKS
Set bias pot. to -IVoIt, Adjust for MINIMUM
deflection. Attenuate signal gen. to maintain
-IVolt reading.
Adjust for maximum deflection. Attenuate
signal gen. to maintain 1 volt reading.
F IG.4
11,
18.
ALIGNMENT IN
If the tuner is operating and requires only touch up alignment the
completely realigned pre-set all adjustments to the approximate
Pre-set A26 so the screw head is approximately 3/8 inch above t
Do not change any adjustments on the antenna matching unit.
Disconnect the coax link from terminal" A" of L24. Connect a 39S2
Connect a clip lead from the tuner AGC terminal, (terminal 3) to
During step 17 the signal generator is connected to the RF Amp.
and the tube replaced in its socket. Connect the generator to the
Set the fine tuning control 30 degrees clockwise from the mechan
Connect the synchronized sweep voltage from the signal generat
DUMMY
ANTENNA
1500MMF
See fig.e
SIGNAL
GENERATOR
COUPLING
High side to pin 7, (grid)
of 6BQ7, (VI). Low side
to chassis.
Across antenna terminal
SIGNAL
GENERATOR
FREQUENCY
Not used
Not used
MARKER
GENERATOR
FREQUENCY
43. SMC
(4001. mod)
227MC
unmod)
CHAN
2
8
A5
A6
19.
183MC
(10MC Swp)
181. 25MC
185.75MC
up. to point
side to chas-
A7,A8
Connect 330S2 resistor across R37, R38 and
terminals 'A1" and V'of M6. Adjust for response
curve similar to fig. I. Attenuate
sweep gen. to maintain . 5 volt peak to peak
response.
20.
Not used
129MC
6
np. thru de-
-obe, (fig. 2)
of6AU6 (V3).
; to chassis.
ASaAlO
Leave 330J3 resistors connected. Connect a
180n resistorbetween pin 5 of V3 and junction
of R29 and C40. Adjust for response similar
to fig. 3.
FIG.5
21.
22.
"
"
8 SMC
(10MC Swp)
Not used
83.25MC
87, 75MC
Not used
up. to point
side to chas-
Remove all damping resistors. Set IF bias
to -6 volts. Check for response curve similar
to fig. 4. If necessary retouch A4 and A5 for
proper response. Retouch A6 only if absolutely
necessary. Incorrect adjustment of A6 will
interfere with trap action.
23.
24.
"
Repeat step 18.
"
85MC
(10MC Swp)
83.25MC
87. 75MC
ator.
25.
Repeat step 19.
ADJUST
A14
REMARKS
Adjust for maximum deflection on VTVM. Adjust signal
gen. to obtain 10 volt reading.
2*. Repeat step 23, If necessary repeat steps 16, 17, and 20 until no fur
27. see Fig. 8 Across antenna terminal. Not used 257MC
13
A15
A16
A17.A18
A19
Adjust for MINIMUM 4001 indication on scope. Repeat
steps 10 and 11.
Check the voltage at poinK^). II the voltage exceeds ±
1. 5 volts, adjust A16 for zero voltage on VTVM between
positive and negative peaks. Repeat adjustment of A15
and A16 until VTVM reads less than 1 1. 5 volts with
A15 adjusted for MINIMUM 4001 indication on scope.
Adjust for maximum amplitude and symmetry as per
Fig. 5.
lent should not be attempted unless it has been definitely established
required equipment cons sts of a sweep generator capable of at least
nch. Misalignment of this unit can cause serious attenuation of the
will not effect the alignm ;nt,
mid be realigned,
of L8 is alignment Poin \Sy, as shown on the schematic.
mp. thru detrobe
to
>, Low side
A17
A18
A19.A20
Adjust for MINIMUM 400^ indication or scope.
Adjust for MINIMUM 400% indication or scope.
Connect a 3000 resistor from Point^to
chassis. Adjust for response curve similar
to Fig. 7. A19 controls the placement of the
shoulder. A20 is adjusted to give maximum
amplitude of .53MC marker consistant with
curve shape shown in Fig. 7 .
Repeat steps 14, 15 & 16 until no further improvement
can be made.
300-r
BALANCED
L-WV
FIG.6
TO 300j
28.
29.
30.
31.
33.
Repeat Step 20
Repeat Step 19
See Fig. 6 Across antenna terminal.
213MC 211.25MC
(10MC swp.) 215.75MC
207MC 205.25MC
(10MC swp.) 209.75MC
201MC 199.25MC
(10MC swp.) 203.75MC
195MC 193.25MC
{10MC swp.) 197.75MC
189MC 187.25MC
(10MC swp.) 191.75MC
183MC 181.25MC
(10MC swp.) 185.75MC
177MC 175.25MC
(10MC swp.) 179.75MC
85MC
(10MC swp.)
79MC
(10MC swp.)
69MC
(10MC swp.)
63MC
(10MC swp.)
83.25MC
87.75MC
77.25MC
81.75MC
67.25MC
71.75MC
61. 25MC
S5.75MC
55.25MC
59.75MC
57MC
(10MC swp.)
32. See Fig. 6 Across antenna terminal. Not used 257MC
Remove 39SJ Resistor and reconnect from
V 251MC
12
245MC
11
239MC
10
233MC 9
227MC 8
221MC
7
129MC 6
123MC 5
113 MC
4
107MC 3
link
101MC
tuner. Recheck
2
step
FM TRAP
If interference from an FM station is encountered adjust the FM
in the area, they should be checked to make sure the trap is not
13
12
11
10
9
8
7
6
5
4
3
2
13
F IG.8
F IG. 3

n.
ALIGNMENT INSTRUCTIONS CCONTJ
RF ALIGNMENT
If the tuner is operating and requires only touch up alignment the following pre-setting adjustments should not be performed. If the tuner is to be
completely realigned pre-set all adjustments to the approximate center of their range with tie following exceptions.
Pre-set A26 so the screw head is approximately 3/8 inch above the chassis. Turn A9 fully counter-clockwise. Set A23 one quarter turn from tight.
Do not change any adjustments on the antenna matching unit.
Disconnect the coax link from terminal" A" of L24. Connect a 39fi carbon resistor across the open end of the link. .
Connect a clip lead from the tuner AGC terminal, (termina 3) to chassis.
During step 17 the signal generator is connected to the RF Amp. grid by means of a piece of small diameter wire slipped over Pin 7 of the tube,
and the tube replaced in its socket. Connect the generator to the free end of the wire.
Set the fine tuning control 30 degrees clockwise from the mechanical center of its range.
Connect the synchronized sweep voltage from the signal generator to the horizontal input of the oscilloscope for horizontal deflection.
DUMMY
ANTENNA
1500MMF
SIGNAL
GENERATOR
COUPLING
High side to pin 7, (grid)
of 6BQ7, (VI). Low side
to chassis.
SIGNAL
GENERATOR
FREQUENCY
Not used
MARKER
GENERATOR
FREQUENCY
43. SMC
(400% mod)
CHANNEL
2
CONNECT
SCOPE
Vert. Amp. to point

Hem
V 1
V 2
V 3
V A
V 5
V 6
V 7
V 8
V9
V 10
VI 1
V 12
V 13
V 14
V15
V 16
V 17
V 18
V 1 9
V20
V21
V22
V23
V24
V25
Tub.
6BQ7
8X8
6AU6
6CB6
6CB6
6CB6
6AG7
6CB6
6AU6
6AU6
6AL5
6AV6
6AQ5
6SN7GT
6SN7GT
6AQ5
6SN7GT
6SN7GT
6CD6G
6W4GT
6W4GT
1B3GT
5U4G
5U4G
T2Kn
on
57KS2
57Kn
.3S2
.sn
on
RESISTANCE MEASUREMENTS
RESISTANCE READINGS
Pin 1
290KS2
470Kn
47KH
7.8KB
lOMee
• 470KS2
f26Kn
,5Meg
i.SMeg
3.9Meg
l.SMeg
Inf.
M.
nf.
Pin 2
8.2Meg
lOOKn
On
sen
esn
won
on
ts.sxn
on
on
8Kn
on
>43on
ti.2Kn
tl.SMeg
i.3Kn
tS.BKn
tsoKn
.in
Inf.
200Kn
Pin 3
8.8Meg
ji3Kn
on
on
.in
.in
on
uon
on
on
.in
on
on
isoKn
on
on
820n
218Kn
won
200Kn
200Kn
on
.in
.in
.in
on
on
Pin 4
3.9Kn
i.2n
.m
.in
on
.in
.in
t!75Kn
tl.SMeg
.in
IMeg
218Kn
Inf.
Tnf
Inf.
PINS 1 THHOUGH 8 HAVE INF RESISTANCE
nl.
Inf.
ion
iiKn
iiKn
PIN 2
200Kn
Inf.
Inf.
PIN 10
#270Kn
2LAP4
ALL MEASUREMENTS TAKEN IN TV POSITION
ALL CONTROLS SET FOR NORMAL OPERATION
t MEASURED FROM PIN 8 OF V23 81 V24
• MEASURED FROM 130VDC LINE
• MEASURED FROM PIN 8 OF V21
1 MEASURED FROM 135VDC LINE
• MEASURED FROM PIN 3 OF V20 & V21
nn
nn
PIN 11
i20Kn
.in
Pin 5
.2n
tUKn
t2.3Kn
t5Kn
ts.iKn
43n
160Kn
SlKQ
•iKn
Inf.
170Kn
taaon
t680Kn
t250Kn
ti.2Kn
tisKn
T56Kn
IMeg
t24on
t240n
Inf.
Inf.
PIN 12
u.2n
Pin 6
8.7Meg
on
134Kn
t34Kn
flSKSJ
tiiKn
tiiKn
ti. 3Kn
.2Kn
>24Kn
on
170Kn
tsion
400Kn
on
tl.2K!2
on
on
won
Inf.
Inf. .
ien
Ififl
Pin 7
170Kn
100KS2
won
on
on
on
.in
t3.8Kn
82n
esn
Inf.
t330K.O
.470KH
ion
on
3.3Meg
on
on
on
«.m
•.in
Inf
Inf.
Pin 8
ison
t2.9Kn
t8Kn
i.2n
.in
.in
.in
ti2Kn
•on
•on
iiKn
iiKn
on
Pin 9
t2.9K!2
TOP CAP
«2n
TOP CAP
*soon
DISASSEMBLY INSTRUCTIONS
1. Remove 8 push on type control knobs.
2. Remove 3 wood screws from back cover. Remove cover.
3. Disconnect built-in antenna.
4. Disconnect speaker.
5. Remove clip on jewel light.
6. Disconnect H. V. lead. l
7. Disconnect picture tube socket.
8. Disconnect yoke plug from H. V. unit.
9. Remove 6 chassis bolts. Remove chassis.
10. Remove speaker mounting nuts. Remove speaker.
Note: For picture tube removal, it is necessary to remove the chassis as outlined above.
OSCILLATOR ALIGNMENT POINTS
PAGE 8

HORIZ.
INEARITY
CONTROL
WIDTH
HORIZ.
^FREQ.
HEIGHT
CONTROL
HORIZ.
DRIVE
VERT.
PEAKING
CONTROL
,.-
/
VERT.
LINEARITY
CONTROL
VHORIZ.
HOCK
CABINET-REAR VIEW
HORIZONTAL SWEEP CIRCUIT ADJUSTMENTS
Turn the set on and tune in a TV station, preferably a test pattern.
If the picture cannot be synchronized with the horizontal hold control, turn the hold control to the center of its range and adjust the horizontal frequency
slug, (Bl), If adjustment of Bl will not synchronize the picture, turn the waveform slug, (B2), several turns out counter-clockwise and readjust Bl.
Examine the width and horizontal linearity of the picture . If they are not approximately correct adjust the horizontal drive, width, and linearity as
outlined under HORIZ. DRIVE, WIDTH, AND LINEARITY ADJUSTMENT.
Connect the low capacity probe of an oscilloscope to terminal C of L38.
Adjust the waveform slug, (B2), until the broad and narrow peaks of the waveform on the scope are of equal height as shown in figure 9. If necessary
during adjustment of B2, readjust Bl to keep the picture synchronized.
Turn the horizontal hold control to fully counter-clockwise, and momentarily interrupt the signal by switching to another channel and back again.
If the picture is not out of synchronization turn Bl slightly and repeat the signal interruption until the picture is out of synchronization and shows
several bars sloping downward to the left.
Slowly turn the hold control clockwise and carefully note the least number of sloping bars present before the picture pulls into synchronization.
If more than 3 bars are present adjust the locking range trimmer, (B3), slightly clockwise , if less than 2 bars are present adjust B3 slightly
counter-clockwise.
Repeat the check and adjustment of B3 until 2 to 3 bars are present at the pull-in point.
Turn the horizontal hold control to fully clockwise .
Adjust Bl until one bar, sloping downward to the right, appears in the picture. Then back off until the bar just moves off the picture leaving
the picture in synchronization.
HORIZONTAL DRIVE, WIDTH, AND LINEARITY ADJUSTMENTS
Pre-set the adjustments as follows.
Place the width link in the minimum width position, (top).
Pre-set the width slug, (B6), to approximately mid-position.
Pre-set the horizontal linearity slug, (B5), near minimum inductance, (counter-clockwise).
Pre-set the horizontal linearity control near minimum resistance, (clockwise).
Pre-set the horizontal drive trimmer, (B4), to minimum capacity, (counter-clockwise)
Turn the set on and tune in a TV station, preferably a test pattern. Allow a few minutes tor set to warm up.
If the raster is cramped or shows a bright vertical bar in the picture adjust B4 clockwise just enough to remove this condition.
Adjust B5 clockwise until the picture of best linearity and maximum deflection, or the best compromise, are obtained and then one quarter turn more.
Retouch B4 if necessary to obtain best results.
Check the horizontal linearity at various settings of the brightness control. There should be no compression of the right side of the picture, and
no appreciable change in linearityespecially at the extreme left side of the picture.
If objectional changes do occur, turn B5 slightly clockwise and repeat the check.
Adjust the width slug, (B6), until the picture is slightly wider than necessary to fill the mask horizontally. In the event of low line voltage, it may
be necessary to move the width link to the lower position to obtain proper width. In this position the width coil, (B6) is inoperative.
If the left side of the picture appears stretched, -adjust the horizontal linearity control counter-clockwise. If the left side of the picture appears cramped
turn the linearity control clockwise. Whenever possible it is desirable to correct the linearity with the linearity control rather than the drive trimmer(B4).
ADJUST FOR EQUAL PEAKS
i
FIG. 9
PAGE1O

RF TUNER-TOP VIEW
RF TUNER-BOTTOM VIEW
PAGE 11

PAGE 12
CHASSIS BOTTOM VIEW-RESISTOR

)R AND INDUCTOR IDENTIFICATION
PAGE 17

WIDTH
LINK
HIGH VOLTAGE SUPPLY
RF TUNER-RIGHT SIDE
PAGE 18

ITEM
No.
VI
V2
V3
V4
V5
V6
V7
V8
V9
V10
Vll
V12
V13
V14
V15
V16
V17
V18
V19
V20
V21
V22
V23
V24
V25
ITEM
No.
USE
RF Amp.
Converter
1st. Video IF Amp.
2nd. Video IF Amp.
3rd. Video IF Amp.
4th. Video IF Amp.
Video Amp.
AGC Amp.
1st. Sound IF Amp.
2nd. Sound IF Amp.
Ratio Det.
AF Amp.
AF Output
Sync. Sep.
Vert. Sync. Amp.
Vert. Osc.
Vert. Output
Horiz. Sync. Amp.
Horiz. AFC -Horiz.
Osc.
Horiz. Output
Damper
Damper
H.V. Reel.
L.V. Reel.
L.V. Reel.
Pic. Tube
RCA
PART No.
PARTS LIST AND DESCRIPTIONS
TUBES (SYLVANIA or Equivalent)
REPLACEMENT DATA
RCA
PART No.
6BQ7
6X8
6AU6
6CB6
6CB6
6CB6
6AG7
6CB6
BAU6
6AU6
6AL5
6AV6
6AQ5
6SN7GT
6SN7GT
6AQ5
6SN7GT
6SN7GT
6CD6G
6W4GT
6W4GT
1B3GT
5U4G
5U4G
21AP4
REPLACEMENT DATA
SYLVANIA
PART No.
STANDARD
REPLACEMENT
6BQ7
6X8
6AU6
6CB6
6CB6
6CB6
6AG7
6CB6
6AU6
6AU6
6AL5
6AV6
6AQ5
6SN7GT
6SN7GT
6AQ5
6SN6GT
6SN7GT
6CD6G
6W4GT
6W4GT
1B3GT
5U4G
5U4G
21AP4
CATHODE-fl
THOMAS
PART No.
RMA
BASE
TYPE
9AT
9AK
7BK
7CM
7CM
7CM
8Y
7CM
7BK
7BK
6BT
7BT
7BZ
8BD
8BD
7BZ
8BD
8BD
5BT
4CG
4CG
3C
5T
5T
12D
AY TUBE
RTMA
BASE
TYPE
NOTES
NOTES
V25
ITEM
No.
CIA
B
C
D
C2A
B
C
D
C3A
BC
D
C4
C5
C6
C7
C8
C9
CIO
Cll
C12
C13
C14
CIS
C16
C17
C18
C19
C20
C21
C22
C23
C24
C25
C26
C27
C28
C29
C30
C31
C32
C33A
B
C34
C35
C36
C37
C38
C39
C40
C41
C42A
B
C43
C44A
B
C45
C46
C47
C48A
B
C49
21AP4
RATING
CAP. VOLT
35
25
20
100
35
35
10
10
35
35
10
5
5
2
2
5
18
5
27
33
22
1500
1-4
1500
1500
1500
8
1500
1500
270
330
270
22
.68
12
.8-1.4
1500
1500
1500
4700
4700
4700
4700
27
4700
4700
.047
4700
4700
4700
82
4700
4700
4700
4700
4700
4700
1500
4700
4700
4700
10000
450
450
200
50
450
450
450
200
450
450
450
450
450
50
50
50
400
12D
CAPACITORS
Capacity values given in the rating column are in mfd. for Electrolytic
and Paper Capacitors, and in mmfd. for Mica and Ceramic Capacitors.
REPLACEMENT DATA
HCA AEROVOX CENTRALAB CORNELL- ERIE
PART No. PART No. PART No.
DUBILIER
SPRAGUE
PART No.
PART No. PART No.
76486
AFH4-82
UPT433
76485
75510
28417
73747
73747
74521
54207
9305L
72570
38868
76557
74748
76532
75166
73748
75166
70597
73748
75166
75199
76552
75199
76558
71088
76550
76545
75166
75610
75610
73473
73473
1 76470
r
72570
73473
73473
73553
73473
73473
73473
71514
) 76470
73473
) 76470
73473
75166
73473
1 76470
•^73960
I-AFH4-16
LPRS250/4
AFH4-16
PRS450/4
PRS150/4
PRS150/4
PRS150/4
SI5NPO
SI33
BPD-0015
SI1500
BPD-0015
SI1500
BPD-0015
SI1500
SI270
SI330
SI270
SI22N080
SI1500
SI1500
SI1500
BPD-005
BPD-005
1 BPD-2X005'
]
SI27
BPD-005
BPD-005
P488-047
BPD-005
BPD-005
BPD-005
JBPD-2X005'
J
BPD-005
1BPD-2X005"
BPD-005
SI1500
BPD-005
)BPD-2X005"|
J
BPD-01
TCZ-18
TCZ-4.7
TCZ-27
D6-330
TCZ-22
DD-152
829-4
D6-152
DD-152
D6-152
DD-152
D6-152
D6-271
D6-331
D6-271
TCZ-.68
829-3
D6-152
D6-152
D6-152
DD-502
DD-502
DD-2-502
D6-270
DD-502
DD-502
DF-503
DD-502
DD-502
DD-502
TCN-82
DD-2-502
DD-502
DD-2-502
DD-502
D6-152
DD-502
DD-2-502
DD-103
UPT434
UPT420
BR445
BBR2-50
BBH2-50
BR550
1D5D5
1D5D5
1D5D5
JD5D5
1D5D5
1D5D5
PTE4S5
1D5D5
1D5D5
1D5D5
1D5D5
1D5D5
1D5D5
1D5D5
1D5D5
UJ5D5
1W5D15
1D5D5
"1D5D5
1D5D5
"1D3S1
NPOK-180
NPOK-050
NPOK-270
GP1K-330
NPOK-220
801-0015
GP2L-152
801-0015
GP2L-152
NPOK-080
801-0015
GP2L-152
GP2K-271
GP2K-331
GP2K-271
N080-331-220
NPOK-R68
N080-331-120
GP2L-152
GP2L-152
GP2L-152
811-005
811-005
811-005
811-005
GP1K-270
811-005
811-005
811-005
611-005
811-005
N750L-820
811-005
811-005
811-005
811-005
811-005
811-005
GP2L-152
811-005
811-005
811-005
821-01
rTVL-3785
l-TVA-1504
rTVL-3785
LTVA-1702
TVA-1702
TVA-1301
TVA-1301
TVA-I303
5GA-Q33
5HK-D15
501C1
5HK-D15
501C1
5HK-D15
501C1
5GA-T27
5GA-T33
5GA-T27
501C1
501C1
5HK-D15
5HK-D47
5HK-D47
.5HK-2D4T
i
5HK-D47
5HK-D47
4TM-S47
5HK-D47
5HK-D47
5HK-D47
>5HK-2D47
1
5HK-D47
I5HK-2D47
5HK-D47
501C1
5HK-D47
J5HK-2D47
J
5HK-S1
IDENTIFICATION CODES
AND
INSTALLATION NOTES
.Filter
•Decoupling
* Audio Output Cathode
Vert. Output Cathode
.Filter
• Vert. Output Dec.
* Output Dec.
Decoupling
.Filter
• Filter
A Decoupling
Video Amp. Screen
Vert. Osc. Dec.
AGC Filter
AGC Filter
Stabilizing Cap.
Fixed Trimmer
RF Coupling
Fixed Trimmer
Fixed Trimmer
RF Coupling
AGC Filter
Variable Trimmer
RF Amp. Cathode
RF Bypass
RF Bypass
Fixed Trimmer
RF Amp. Fil.
RF Bypass
RF Coupling
RF Coupling
RF Coupling
Osc. Grid. Cap.
Fixed Trimmer
Osc. Feedback
Variable Trimmer
Conv. Fil.
Fil. Bypass
RF Bypass
RF Bypass
AGC Filter
RF Bypass
RF Bypass
Fixed Trimmer
AGC Filter
AGC Filter
RF Bypass
1st Video IF Screen
1st Video IF Fil.
RF Bypass
Fixed Trimmer
2nd Video IF Plate
2nd Video IF Screen
2nd Video IF FU.
3rd Video IF Plate
3rd Video IF Screen
3rd Video IF Fil.
4th Video IF Plate
4th Video IF Screen
4th Video IF Cathode
4th Video IF Fil.
RF Bypass
o
m
to
N
Ch
-S
M >
N
10
3
N
00
to
3
PAGE 13

i}
ITEM
No.
C50
C51
C52
C53
C54
C55
C56
C57
C58
C59
C60
C61
C62
C63A
B
C64
C65
C66A
B
C67
C68
C69
C70
C7I
C72
C73
C74
C75
C76
C77
C78
C79
C80
C81
C82
083
C84
C85
C86
C87
C88
C89
C90
C91
C92
C93
C94
C95
C96
C97
C98
C99
C100
C101
C102
C103
C104
C105
C106
C107
C108
C109
C1IO
cm
C112
C113
C114
C115
cue
C117
C118
C119
C120
C121
C122
C123
C124
C125
RATING
CAP. VOLT
.0041
47
15
3
.22
10000
10000
100
39
10000
.1
.0047
10000
10000
10000
10000
56
10000
10000
10000
470
470
1-4
330
.0022
.0047
.015
.0082
.01
.0027
270
.01
.0047
.022
.01
.001
.001
100
.01
.0022
.0047
.01
.047
.22
.0022
.022
.022
.1
.1
.022
.001
100
82
150
.47
.022
.047
.047
82
270
.01
.0015
.001
.047
.47
33
.068
.068
.47
180
150
500
.01
270
.047
.047
1500
150
600
400
500
400
600
500
500
500
600
600
200
600
400
600
400
600
400
400
600
600
400
600
600
600
600
600
000
400
400
600
400
600
600
000
!00
100
100
600
500
500
600
600
1000
600
200
1000
1000
200
30000
400
500
400
400
RCA
PART No.
73920
39042
39044
76507
73794
73960
73960
76578
76574
73960
73551
73920
73960
.75877
73960
71924
; 75877
73960
39644
39644
76532
76473
73595
73920
73797
73808
73561
73599
47617
73561
73920
73562
73561
75643
75643
45233
73561
73595
73920
73594
73592
74957
73803
73562
73563
73557
73551
73798
75643
45233
73090
44202
73787
73562
73553
73592
73090
76579
73594
76508
73801
73592
73787
76577
73815
73815
73787
76575
76578
76488
73561
76579
75071
75071
73748
AEROVOX
PART No.
P688-0047
SI47N750
S13NPO
P488-22
BPD-01
BPD-01
1468-0001
CAPACITORS CCONT.J
REPLACEMENT DATA
BPD-01 DD-103
P488-1 DF-104
P688-0047 D6-472
BPD-01 DD-103
BPD-01 1 DD-3-103
BPD-01 _J
BPD-01 DD-103
TbPD-01
^BPD-01
BPD-01
1468-0005
1468-0005
1468-00035
P688-0022
P6B8-0047
P288-015
P488-01
P688-003
SI270
P488-01
P688-0047
P488-022
P488-01
P688-001
P688-001
SHOO
P488-01
P688-0022
P688-0047
P688-01
P688-047
684-25
P1088-0022
P488-022
P488-022
P688-1
P488-1
P688-022
P688-001
SHOO
SI150
P288-47
P488-022
P488-047
P688-047
1469-0003
P688-01
P688-0015
P1088-001
P688-047
P288-47
P1088-068
P1088-068
P288-47
P488-01
1468-0003
P488-047
P488-047
BPD-0015
SI150
CENTRALAB
PART No.
D6-472
TCN-47
TCN-15
DD-103
DD-103
D6-101
TCN-56
DD-103
DD-103
DD-103
D6-471
D6-471
829-4
D6-331
D6-222
D6-472
D6-103
D6-272
D6-271
D6-103
D6-472
DF-203
D6-103
D6-102
D6-102
D6-101
D6-103
D6-222
D6-472
D6-103
DF-503
DF-203
DF-203
DF-104
DF-104
DF-203
D6-102
D6-101
D6-151
DF-203
DF-503
DF-503
)6-103
J6-152
)F-503
TV1-503
D6-103
D6-271
DF-503
DF-503
DD-152
D6-151
CORNELL-
DUBILIER
PART No.
PTE6D5
GT4P2
1D3S1
1D3S1
5W5T1
1D3S1
PTE4P1
PTE6D5
1D3S1
1D3S1
1D3S1
D3S1
1D3S1
1D3S1
1D3S1
5W5T5
5W5T5
PTE6D2
PTE6D5
PTE6S15
PTE4S1
PTE6D3
5W5T3
PTE4S1
PTE6D5
PTE4S2
PTE4S1
PTE6D1
PTE6D1
5W5T1
PTE4S1
PTE6D2
PTE6D5
PTE6S1
PTE6S5
GP6P25
PTE16D2
PTE4S2
PTE4S2
PTE6P1
PTE4PI
PTE6S2
PTE6D1
5W5T1
5W5T15
GT2P5
PTE4S2
PTE4S5
PTE6S5
5R5T3
PTE6S1
PTE6S5
3T2P5
3T2P5
PTE4S1
5W5T3
PTE4S5
'TE4S5
1W5D15
5W5T15
* Not used in all models.
t Some models use 0033MFD t i this application (Part No. 73795).
tSome models use 082 MFD ii this application (Part No. 76683).
ITEM
No.
Rl
R2A
B
R3A
B
C
R4A
B
R5A
B
R6A
R7A
B
R8
RESIST-
ANCE
l.SMeg
I5KB
200K
RATING
IMeg
50KB
'Shaft end
500KB
Shaft
1500B
Shaft
2.5Meg
Shaft
10KB
Shaft
500B
WATTS
i i
2
2
i -,
i T.
J
i ~>
~j
2
RCA
PART No.
\ "Y
REPLACEMENT DATA
IRC
PART No.
76171
76445
76444
/ "Concentrikit
Bll-137 »
76443 •{ Bll-123 *
E-187 *
76447 t "511-123
Not Req.
76449 J Qll-119
Not Req.
76448 J Q19-139X
\7 Not Req. /
Qll-116
I Not Req.
76496 W-500
* Additional parts to be used with Concentrikit.
Note 1 : Tone switch attached to front of volume control.
CONTROLS
CLAROSTAT
PART No.
AM-44-S
FKS-1/4
AM-32-S
FKS-1/4
AG-84-S
FKS-1/4
AG-27-S
FKS-1/4
43-500
ERIE
PART No.
GP2-333-472
N750K-470
N750K-150
NPOK-030
821-01
821-01
GP1K-01
821-01
CENTRALAB
PART No.
SBB-588
AN- 31
AK-1
AN-22
AK-1
B-83
AK-1
B-14
Not Req.
VK-127
GP2-333-472
821-01
821-01
821-01
821-01
N750K-560
821-01
821-01
821-01
GP2K-471
GP2K-471
532-08-OR5
GP2K-331
GP2-333-222
GP2-333-472
GP2-333-I03
GP2-333-272
GP2K-271
GP2-333-103
GP2-333-472
GP2-333-103
GP2L-102
GP2L-102
GP1K-101
GP2-333-103
GP2-333-222
GP2-333-472
GP2-333-103
GP2L-102
GPLK-101
GP2K-151
GP2-333-103 '
GP2L-152
3P2-333-103
GP2K-271
801-0015
3P2K-15I
SPRAGUE
PART No.
6TM-S47
5TCU-Q47
5TCU-Q15
4TM-P22
5HK-S1
5HK-S1
1FM-31
5HK-S1
4TM-P1
6TM-D47
5HK-S1
5HK-S1
5HK-S1
5HK-S1
5HK-S1
5HK-S1
5HK-S1
1FM-35
1FM-35
1FM-335
6TM-D22
6TM-D47
6TM-S15
4TM-S1
6TM-D3
5GA-T27
4TM-S1
6TM-D47
4TM-S22
4TM-S1
6TM-D1
6TM-D1
5GA-T1
4TM-S1
6TM-D22
6TM-D47
6TM-S1
6TM-S47
6TM-P25
MB-D22
4TM-S22
4TM-S22
6TM-P1
4TM-P1
6TM-S22
6TM-DI
5GA-T1
5GA-T15
2TM-P47
4TM-S22
4TM-S47
6TM-S47
MS-33
6TM-S1
6TM-D15
6TM-S47
2TM-P47
2TM-P47
4TM-S1
MS-33
4TM-S47
4TM-S47
5HK-D15
5GA-T15
INSTALLATION NOTES
IDENTIFICATION CODES
AND
INSTALLATION NOTES
Video Amp. Cathode
Contrast Cont. Shunt
Contrast Cont. Shunt
Contrast Cont. Shunt
Video Coupling
AGC Filter
AGC Filter
Voltage Divider
Horiz. Feedback
AGC Cathode
AGC Filter
AGC Filter
Sound IF Grid Filter
1st Sound IF plate
1st Sound IF Screen
1st Sound IF Cathode
2nd Sound IF Grid
2nd Sound IF Plate
2nd Sound IF Screen
2nd Sound IF Cathode
Diode Load Cap.
Diode Load Cap.
Variable Trimmer
Diode Load Cap.
De-emphasis
Audio Coupling
Tone Comp.
Tone Comp.
Audio Coupling
Tone Comp.
Tone Comp.
Audio Coupling
Audio Output Plate t
Sync.. Sep. Cathode
Sync. Sep. Cathode
Vert. Sync. Coupling
Vert. Feedback
Vert. Sync. Amp. Plate
Vert. Sync. Coupling
Vert. Integrator Net.
Vert. Integrator Net.
Vert. Osc. Grid Cap.
Vert. Discharge
Vert. Sweep Coupling
Vert. Output Plate
Vert. Output Plate
Fixed Trimmer
Fixed Trimmer
Vert. Sweep Coupling
Integrator Net.
Horiz. Sync- Coupling
Horiz. Sync. Coupling
Horiz. Sync. Coupling
Horiz. Sync. Amp. Cathode
AFC Filter
AFC Filter
AFC Filter
AFC Plate
Horiz. Feedback
Horiz. Osc. Grid Cap.
Fixed Trimmer
Horiz. Discharge
Horiz. Sweep Coupling
Horiz. Output Screen
Horiz. Output Cathode
Fixed Trimmer
Damper Filter f
Damper Filter
Damper Filter
Fixed Padder
Damper Fil.
HV Filter
Accelerating Anode Dec.
Voltage Divider
Line Filter
Line Filter
Horiz. Output Fil. *
Vert. Sync. Feedback
Volume Control & Switch- See Note 1
Contrast Control Tapped @ 5Kft_a!id 10KS2
Brightness Control.
Vertical Hold Control - Panel
Horizontal Hold Control - Rear
Attach per instructions in "Concentrikit".
AGC Control
Attach to R4A per instructions
Vertical Linearity Control
Attach to R5A per instructions
Height Control
Attach to R6A per instructions
Vertical Peaking Control
Attach to R7A per instructions
Horizontal Linearity Control
•
ITEM
No.
R9
RIO
Rll
R12
R13
R14
R15
R16
R17
R18
R19
R20
R21
R22
R23
R24
R25
R26
R27
R28
R29
R30
R31
R32
R33
R34
R35
R36
R37
R38
R39
R40
R41
R42
R43
R44
R45
R46
R47
R48
R49
R50
R51
R52
R53
R54
R55
R56
R57
R58
R59
R60
R61
R62
R63
R64
R65
R66
R67
R68
R69
R70
R71
R72
R73
R74
R75
R76
R77
R78
R79
R80
R81
R82
R83
R84
R85
R86
R87
R88
PARTS LIST AND
RATING
RESISTANCE
3300B
3300B
150B 20%
47B
82B
470KB 20%
1000B 20%
1000B 20%
IOOKB 20%
100KS2 20%
3300!!
100KB 20%
10KB 20%
3.3Meg 5%
10KB
220KB 5%
100B 20%
100B 20%
1000B
68000
IOOB 5%
33KB
IOOOQ
IOOOB
56B 5%
33KB
IOOOB
100KB
56KB
10KB
150KB
47KB
120KB
8v2Meg
68B 5%
10KB
2200B
68ooa 5%
56KB 5%
180(2
39KB
6800B
8200B
10KB
1000B
3900B 5%
43B 5%
6750B
680!!
5600B
10KB
150KB
470KB
1000B
150KB 20%
100KB
470KB 20%
82 ft 5%
OOOB 20%
IOOOB 20%
47KB
68B 5%
33KB
ooon 20%
56KB
47B 5%
39KB
200B 5%
OOOB 5%
6800B 5%
S800B 5%
8KB
2KB
27KB
OMeg 20%
330KB
470KB 20%
000
330B
470Q
R89
R90
R91
R92
H93
R94
R95
R96
R97
R98
R99
R100
RI01
R102
R103
R104
R105
R106
R107
R108
R109
R110
Rill
R112
R113
R114
150KB
100KB
33KB
220KB
1200B
IMeg
12KB
3.9Meg
820B
18KB
150KB
8.2Meg
680KB
470KB
470KB
1.5Meg
220KS!
22KB
22KB
22KB
B200B
IMeg
IMeg
lOMeg
320KB
10KB
20%
20%
5%
R115
R116
R117
3.3Meg 5%
OOOB
S60B
WATTS
2
1
2
|
J
2
f
I
1
2
I
-'-
1
g
z i
A
z
_1
1
1
2
2
2
l
|
l
10
i
1
1
A
I
i
1
1
i3
1
f
1
1 I
I
1
|
I
I
i
i
z J
2.
I
A
|
A
2
2
1
1
A
i
|
A
|
i
I
J
I
i
I
f
A
A
A
i
I
|
z
2
A
L
2
2
i
1 513210
\T 503156 DAT
RCA
PART No.
31417
503310
502422
504110
504110
503210
503268
502110
503333
503210
503210
502056
503333
503210
503410
503356
503310
503415
503347
503412
503582
34763
503310
503222
14659
30650
503118
503339
513268
503282
523310
503210
30694
502043
76642
503168
513256
513310
503415
503447
503210
504415
513410
504447
13961
504210
504210
503347
34763
503333
504210
503356
30732
503339
30731
34766
4659
4659
503318
503322
503327
504610
503433
504447
503110
76465
76467
503415
503410
503333
503422
503212
504510
513312
503539
503182
503318
503415
503582
503468
503447
503447
503515
503422
503322
503322
503322
503282
504510
502510
503610
503482
503310
502533
L
IR
PART
BTA-3.
BTS-IO:
BTS-22
BTS-lOt
BTS-101
BTS-10(
BTS-68'
BTS-101
BTS-33
BTS-lOt
BTS-KM
BTS-33
BTS-101
BTS-lOt
BTS-561
BTS-MN
BTS-15C
BTS-471
BTS-12C
BTS-8.;
BTS-10F
BTS-221
BTS-681
BTS-561
BTS-180
BTS-391
BTA-681
BTS-82(
BTB-IOI
BTS-100
BTS-39{
1 3/4A-1
BTS-68C
BTA-561
BTA-101
BTS-150
BTS-470
BTS-100
BTS-150
BTA-100
BTS-470
BTS-82
BTS-100
BTS-100
BTS-47I-
BTS-331-
BTS-lOO
BTS-56F
BTS-39B
BTS-1201
BTS-1001
BTS-680
BTS-680
BTS-18K
BTS-22K
BTS-27K
BTS-10M
BTS-330
BTS-470
BTS-100
BTA-330
BTA-470
BTS-150
BTS-100
BTS-33*
BTS-220
BTS-120
BTS-lM
BTA-12I
BTS-3.9
BTS-820
BTS-18K
BTS-150
BTS-8. 2
BTS-680
BTS-470
BTS-470
BTS-1.5
BTS-220
BTS-22K
BTS-22K
BTS-22K
BTS-820
BTS-lM
BTS-lMc
BTS-10M
BTS-820
BTS-10K
BTS-3.3
BTA-100
BTS-560
PAGE 14

SPRAGUE
PART No.
6TM-S47
5TCU-Q47
5TCU-Q15
4TM-P22
5HK-S1
5HK-S1
1FM-31
5HK-S1
4TM-P1
6TM-D47
5HK-S1
5HK-S1
5HK-S1
5HK-S1
5HK-S1
5HK-S1
5HK-S1
1FM-35
1FM-35
1FM-335
6TM-D22
6TM-D47
6TM-S15
4TM-S1
6TM-D3
5GA-T27
4TM-S1
6TM-D47
4TM-S22
4TM-S1
6TM-D1
6TM-D1
5GA-T1
4TM-S1
6TM-D22
6TM-D47
6TM-S1
6TM-S47
6TM-P25
MB-D22
4TM-S22
4TM-S22
6TM-P1
4TM-P1
6TM-S22
6TM-D1
5GA-T1
5GA-T15
2TM-P47
4TM-S22
4TM-S47
6TM-S47
MS-33
6TM-S1
6TM-D15
6TM-S47
2TM-P47
2TM-P47
4TM-S1
MS-33
4TM-S47
4TM-S47
5HK-D15
5GA-T15
NSTALLATION NOTES
IDENTIFICATION CODES
AND
INSTALLATION NOTES
Video Amp. Cathode
Contrast Cont. Shunt
Contrast Cont. Shunt
Contrast Cont. Shunt
Video Coupling
AGC Filter
AGC Filter
Voltage Divider
Horiz. Feedback
AGC Cathode
AGC Filter
AGC Filler
Sound IF Grid Filter
1st Sound IF plate
1st Sound IF Screen
1st Sound IF Cathode
2nd Sound IF Grid
2nd Sound IF Plate
2nd Sound IF Screen
2nd Sound IF Cathode
Diode Load Cap.
Diode Load Cap.
Variable Trimmer
Diode Load Cap.
De-emphasis
Audio Coupling
Tone Comp.
Tone Comp.
Audio Coupling
Tone Comp.
Tone Comp.
Audio Coupling
Audio Output Plate t
Sync. Sep. Cathode
Sync. Sep. Cathode
Vert. Sync. Coupling
Vert. Feedback
Vert. Sync. Amp. Plate
Vert. Sync. Coupling
Vert. Integrator Net.
Vert. Integrator Net.
Vert. Osc. Grid Cap.
Vert. Discharge
Vert. Sweep Coupling
Vert. Output Plate
Vert. Output Plate
Fixed Trimmer
Fixed Trimmer
Vert. Sweep Coupling
Integrator Net.
Horiz. Sync. Coupling
Horiz. Sync. Coupling
Horiz. Sync. Coupling
Horiz. Sync. Amp. Cathode
AFC Filter
AFC Filter
AFC Filter
AFC Plate
Horiz. Feedback
Horiz. Osc. Grid Cap.
Fixed Trimmer
Horiz. Discharge
Horiz. Sweep Coupling
Horiz. Output Screen
Horiz. Output Cathode
Fixed Trimmer
Damper Filter f
Damper Filter
Damper Filter
Fixed Padder
Damper Fil.
HV Filter
Accelerating Anode Dec.
Voltage Divider
Line Filter
Line Filter
Horiz. Output Fil. *
Vert. Sync. Feedback *
ne Control & Switch- See Note 1
•ast Control Tapped Q 5KS7 an
itness Control.
cal Hold Control - Panel
ontal Hold Control - Rear
h per instructions in "Concentrikit".
Control
h to R4A per instructions
:al Linearity Control
i to R5A per instructions
t Control
i to R6A per instructions
:al Peaking Control
i to R7A per instructions
ontal Linearity Control
ITEM
No.
R9
RIO
Rll
F12
R13
R14
R15
R16
R17
R18
R19
R20
R21
R22
R23
R24
R25
R26
R27
R28
R29
R30
R31
R32
R33
R34
R35
R36
R37
R38
R39
R40
R41
R42
R43
R44
R45
R46
R47
R48
R49
R50
R51
R52
R53
R54
R55
R56
R57
R58
R59
R60
R61
R62
R63
R64
R65
R66
R67
R68
R69
R70
R71
R72
R73
R74
R75
R76
R77
R78
R79
R80
R81
R82
R83
R84
R85
R86
R87
R88
PARTS LIST AND DESCRIPTIONS (Continued)
RESISTORS
RATING
RESISTANCE
3300f!
3300!!
150!! 20%
47!2
82S2
470KS? 20%
1000S2 20%
1000 S2 20%
100KS! 20%
100KS! 20%
3300f!
100KS2 20%
10K!2 20%
3.3Meg 5%
10KS!
220KS2 5%
10012 20%
loora 20%
moon
6800S7
loon 5%
33K!2
iooo!!
10000
sen 5%
33K!2
lOOOf!
100K!2
56K!2
10Kf!
150Kf!
47KS2
120K!2
8i2Meg
68S2 5%
10KS2
22000
680012 5%
56Kfi 5%
ison
39K!2
6800S2
8200S2
10KS2
1000 !!
3900S2 5%
43!! 5%
6750!!
680f!
5600S2
10K!2
150KS2
470K!!
1000S2
50KO 20%
lOOKi!
470KS! 20%
82 a 5%
ooos2 20%
100012 20%
47KS2
68!! 5%
33Kf!
ooon 20%
56KS!
47!! 5%
39KS2
1200S! 5%
OOOS2 5%
6800!! 5%
6800!! 5%
8K!2
22Kf!
27K!2
OMeg 20%
330K!!
470KQ 20%
00!!
330!!
J70!l
R89
R90
R91
R92
R93
R94
R95
R96
R97
R98
R99
R100
R101
R102
R103
R104
ISOKf!
100K12
33K!!
220K!2
1200S2
IMeg
12K!2
3.9Meg
820!!
18K!1
150K!2
8.2Meg
680K!2
470K!2
470K!!
l.SMeg
20%
RI05 220K!!
R106
R107
R108
RI09
R110
Rill
R112
R113
R114
22KS2
22KS2
22KS2
3200!!
IMeg
Meg
lOMeg
320K!2
OK!!
20%
5%
R115 3.3Meg 5%
R116 ooon
R117 >60!2
WATTS
1
t
2
i
I
\
4
~
I
1
|
Z
\
1
| ^
2
|
I
1
1
a
I
1
2
\F
i
\
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~Z
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2
\
2
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5
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1
1
2
2
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10
~z
1
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1
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^£
\
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\
1
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1
1
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1
2
T i2
I
f
Z
1
\
1
REPLACEMENT DATA
RCA
PART No.
31417
503310
502422
504110
504110
503210
503268
502110
503333
503210
503210
502056
503333
503210
503410
503356
503310
503415
503347
503412
503582
34763
503310
503222
14659
30650
503118
503339
513268
503282
523310
503210
30694
502043
76642
503168
513256
513310
503415
503447
503210
504415
513410
504447
13961
504210
504210
503347
34763
503333
504210
503356
30732
503339
30731
34766
4659
4659
503318
503322
503327
04610
J03433
04447
03110
6465
6467
503415
503410
503333
503422
503212
504510
513312
503539
503182
503318
503415
503582
503468
503447
503447
503515
503422
503322
503322
503322
503282
504510
502510
503610
503482
503310
502533
J13210
503156
IRC
PART No.
BTA-3.3Meg5%
BTS-10K
ETS-220K 5%
BTS-100
BTS-100
BTS-1000
BTS-6800
BTS-100 5%
BTS-33K
BTS-1000
BTS-1000
BTS-33K
BTS-1000
DTS-100K
BTS-56K
BTS-10K
BTS-150K
BTS-47K
BTS-120K
BTS-8.2Meg
BTS-10K
BTS-2200
BTS-6800 5%
BTS-56K 5%
BTS-180
BTS-39K
BTA-6800
BTS-8200
BTB-10K
BTS-1000
BTS-3900 5%
1 3/4A-7000
BTS-680
BTA-5600
BTA-10K
BTS-150K
BTS-470K
BTS-1000
BTS-150K
BTA-100K
BTS-470K
BTS-82 5%
BTS-1000
BTS-1000
BTS-47K
BTS-33K
BTS-1000
BTS-56K
BTS-39K
BTS-1200 5%
BTS-1000 5%
BTS-6800 5%
BTS-6800 5%
BTS-18K
BTS-22K
BTS-27K
BTS-lOMeg
BTS-330K
BTS-470K
BTS-100
BTA-330
BTA-470
BTS-150K
BTS-100K
BTS-33K
BTS-220K
BTS-1200
BTS-lMeg
BTA-12K
BTS-3.9Meg
BTS-820
BTS-18K
BTS-150K
BTS-8.2Meg
BTS-680K
BTS-470K
BTS-470K
BTS-1.5 Meg
BTS-220K
BTS-22K
BTS-22K
BTS-22K
BTS-8200
BTS-lMeg
BTS-lMeg 5%
BTS-lOMeg
BTS-820K
BTS-10K
BTS-3.3Meg 5%
BTA-1000
BTS-560
IDENTIFICATION CODES
ALL RESISTORS - 10% UNLESS OTHERWISE SPECIFIED
Antenna Coil Shunt
AGC Network
AGC Network
RF Amplifier Cathode
RF Amplifier Cathode
RF Amplifier Grid
RF Amplifier Decoupling
RF Amplifier Decoupling
Isolation
Mixer Grid
RF Coil Shunt
Oscillator Grid
Oscillator Plate
AGC Network
AGC Network
AGC Network
Decoupling
Decoupling
AGC Network
IF Coil Shunt
1st. Video IF Cathode
1st. Video IF Screen
1st. video IF Plate
2nd. Video IF Grid
2nd. Video IF Cathode
2nd. Video IF Screen
2nd. Video IF Plate Decoupling
Isolation
AGC Network
AGC Network
AGC Network
Voltage Divider
Voltage Divider
Voltage Divider
3rd . Video IF Cathode
3rd. Video IF Screen
3rd. Video IE- Plate Decoupling
IF Coil Shunt
IF Coil Shunt
4th. Video IF Cathode
4th. Video IF Screen - See Note 1
4th. Video IF Plate Decoupling
Voltage Divider - See Note 2
Voltage Divider
Isolation
Video Amplifier Grid
Video Amplifier Cathode
Video Amplifier Plate Wire-Wound
Contrast Network
Contrast Network
Voltage Divider
Voltage Divider
Picture Tube Cathode
Picture Tube Cathode See Note 2
Voltage Divider
Voltage Divider
1st. Sound IF Grid
1st. Sound IF Cathode
1st. Sound IF Screen
1st. Sound IF Decoupling
2nd. Sound IF Grid
2nd. Sound IF Cathode
2nd. Sound IF Screen
2nd. Sound IF Decoupling
Bleeder
Balancing
De-emphasis
Balancing
Balancing
Ratio Detector Diode Load
Ratio Detector Diode Load
Tone Compensation
Tone Compensation.
Tone Compensation
Audio Amplifier Grid
Audio Amplifier Plate
Audio Output Grid
Audio Output Cathode
Audio Cntput Cathode Wire-Wound
Audio Output Decoupling Wire-Wound
AGC Amplifier Grid
Voltage Divider
Voltage Divider
Horizontal Sync.Seperator Cathode
Horizontal Sync. Scperato Plate
Horizontal Sync. Amplifie Grid
Horizontal Sync. Amplifie Plate
Horizontal Sync. Amplifie Grid
Horizontal Sync. Amplifie Cathode
Isolation
Isolation
Sync, generator Cathode See Note 3
Sync. Seperator Plate
Sync. Peaking See Note 4
Sync. Peaking See Note 2
Vertical Sync. Amplifier Grid
Vertical Sync. Amplifier Plate
Vertical Sync. Amplifier Plate
Integrator Network
Integrator Network
Integrator Network
Vertical Osc. Trans. Shunt
Vertical Osc. Grid
Vertical Osc. Grid
Vertical Osc. Plate
Vertical Peaking
Vertical Output Grid
Vertical Output Cathode
Vertical Output Decoupling
ITEM
No.
R118
R119
R120
R121
R122
R123
R124
R125
R126
R127
R128
RI29
R130
R131
RI32
R133
R134
R135
RI36
R137
R138
R139
R140
R14I
R142
RMS
R144
R145
R146
R147A
lOOOMeg
950S2
B 450fi
C 1500!!
D 1200 f2
E 10K!1
F 7K!1
RATING
RESISTANCE
)8K!! 5%
OK!!
220KS2
150K!!
270K«
2700!!
32K1!
S8KI2
330K!!
320K!!
38K!!
150K!! 5%
3900!!
68Kf! 5%
8200f! 5%
18K!1
56KH 5%
150Kf!
390K!i
390KS!
47(2 20%
IMeg
100!!
8200«
8200!!
82K!2
200!!
1.5!2 5%
WATTS
1
a i
2
2
i
1
l
2
J
1
|
A
1
i
^1
1
l
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1
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j
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2
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1
5
^2
R
PA
>12368
J03310
503422
503415
503427
50322'
513382
513368
50343S
503482
513368
512415
50323!
512368
50228;
503318
512356
503415
50343!
50343!
50404^
503510
523110
76504
76504
513382
76682
76468
76648
16 "")
6 /
5 I 76499
1 (
5 \ J
Note 1: Some Models may use a
Note 2: Not used in all Models
Note 3: Some Models may use a
Note 4: Some Models may use a
ITEM
No.
Tl
ITEM
No.
T2
T3
T4
T5A
B
ITEM
No.
T6
PRI.
117VAC
®2.7A
PRI.
165!2
300!2
tapped
©10f!
650!!
30S2
3.5!2
RATING
SEC. 1 SEC. 2
700VCT 5.0VAC
.290ADC ©6.0A
SEC. 4
6.3VAC
(5)1. 5A
RATING
DC RESISTANCE
SEC.
1310!!
0!!
.5!!
d) Drill new mounting holes.
ITEM
No.
SP1
SP2
ITEM
No.
LI
IMPEDANCE
PRI.
7KS2
SEC.
3.4!!
FIELD RES.
P.M.
CONE DIA.
11 5/8 in.
TOTAL
DIRECT
CURRENT
.290A
RATING
RCA
PAR"
74144
76501
76494
76653
DC RES.
PRI. SEC.
370!! .4!!
RATINGS
V. C. IMP.
3.4f!
V. C. DIA.
1 in.
RATINGS
D. C.
RESISTANCE
39!!
IN
10
.8

SCRIPTIONS (Continued)
ESISTORS
IDENTIFICATION CODES
ALL RESISTORS - 10% UNLESS OTHERWISE SPECIFIED
Antenna Coil Shunt
AGC Network
AGC Network
RF Amplifier Cathode
RF Amplifier Cathode
RF Amplifier Grid
RF Amplifier Decoupling
RF Amplifier Decoupling'
Isolation
Mixer Grid
RF Coil Shunt.
Oscillator Grid
Oscillator Plate
AGC Network
AGC Network
AGC Network
Decoupling
Decoupling
AGC Network
IF Coil Shunt
Is't. Video IF Cathode
1st. Video IF Screen
1st. Video IF Plate
2nd. Video IF Grid
2nd. Video IF Cathode
2nd, Video IF Screen
2nd. Video IF Plate Decoupling
Isolation
AGC Network
AGC Network
AGC Network
Voltage Divider
Voltage Divider
Voltage Divider
3rd. Video IF Cathode
3rd. Video IF Screen
3rd. Video EC' Plate Decoupling
IF Coil Shunt
IF Coil Shunt
4th. Video IF Cathode
4th. Video IF Screen - See Note 1
4th. Video IF Plate Decoupling
Voltage Divider - See Note 2
Voltage Divider
Isolation
Video Amplifier Grid
Video Amplifier Cathode
Video Amplifier Plate Wire-Wound
Contrast Network
Contrast Network
Voltage Divider
Voltage Divider
Picture Tube Cathode
Picture Tube Cathode See Note 2
Voltage Divider
Voltage Divider
1st. Sound IF Grid
1st. Sound IF Cathode
1st. Sound IF Screen
1st. Sound IF Decoupling
2nd. Sound IF Grid
2nd. Sound IF Cathode
2nd. Sound IF Screen
2nd. Sound IF Decoupling
Bleeder
Balancing
De-emphasis
Balancing
Balancing
Ratio Detector Diode Load
Ratio Detector Diode Load
Tone Compensation
Tone Compensation.
Tone Compensation
Audio Amplifier Grid
Audio Amplifier Plate
Audio Output Grid
Audio Output Cathode
Audio Output Cathode Wire-Wound
Audio Output Decoupling Wire-Wound
AGC Amplifier Grid
Voltage Divider
Voltage Divider
Horizontal Sync .Seperator Cathode
Horizontal Sync. Seperator Plate
Horizontal Sync. Amplifier Grid
Horizontal Sync. Amplifier Plate
Horizontal Sync. Amplifier Grid
Horizontal Sync. Amplifier Cathode
Isolation
Isolation
Sync. Seperator Cathode See Note 3
Sync. Seperator Plate
Sync. Peaking See Note 4
Sync. Peaking See Note 2
Vertical Sync. Amplifier Grid
Vertical Sync. Amplifier Plate
Vertical Sync. Amplifier Plate
Integrator Network
Integrator Network
Integrator Network
Vertical Osc. Trans. Shunt
Vertical Osc. Grid
Vertical Osc. Grid
Vertical Osc. Plate
Vertical Peaking
Vertical Output Grid
Vertical Output Cathode
Vertical Output Decoupling
ITEM
No.
R118
R119
R120
R121
R122
R123
R124
R125
R126
R127
R128
R129
R130
R131
R132
R133
R134
R135
R136
R137
R138
R139
R140
R141
R142
R143
RI44
R145
R146
R147A
RATING
RESISTANCE
88KB 5%
OKfl
220KB
150KO
270KB
2700B
32KB
68KB
330KSJ
320KO
58KB
150KB 5%
3900 ft
68KB 5%
82000 5%
18KB
56KO 5%
150KB
390KB
390KB
470 20%
IMeg
1000
8200 SJ
82000
82KB
200B
1.5B 5%
lOOOMeg
950B
B 450B
C 1500B
D 1200B
E 10KB
F 7KO
WATTS
1
a"
i2^2
I
1
i Ii^l ii
1
ifi212
t
2
2
2
1
5
^2
n
u •
RESISTORS (CONTO
REPLACEMENT DATA
RCA
PART No.
512368
503310
503422
503415
503427
503227
513382
513368
503433
503482
513368
512415
503239
512368
502282
503318
512356
503415
503439
503439
504047
503510
523110
76504
76504
513382
76682
76468
76648
IRC
PART No.
BTA-68K 5%
BTS-10K
BTS-220K
BTS-150K
BTS-270K
BTS-2700
BTA-82K
BTA-68K
BTS-330K
BTS-820K
BTA-68K
BTA-150K 5%
BTS-3900
BTS-68K 5%
BTS-8200 5%
BTS-18K
BTA-56K 5%
BTS-150K
BTS-390K
BTS-390K
BTS-lMeg
BTB-8200
BTB-8200
BTA-82K
1 3/4A- 200
'2D-1000
76499 J f 1 3/4A-450
1 3/4A-I500
1 3/4 A -1200
1 3/4A-10K
1 1 3/4A-7K
Note 1: Some Models may use a 33KS7 Resistor in this application
Note 2: Not used in all Models
Note 3: Some Models may use a 5. 6Meg Resistor in this application
Note 4: Some Models may use a IMeg Resistor in this application
ITEM
No.
Tl
ITEM
No.
T2
T3
T4
T5A
B
ITEM
No.
T6
PRI.
117VAC
©2.7A
RATING
SK. 1
700VCT
.290ADC
DC RESISTANCE
SEC.
1310B
OB
PRI.
165B
300B
tapped
©too
650B
SOB
3.5B
,50
RATING
SEC. 2 SEC. 3
6.3VAC
©9.5A
SEC. 5
6.3VAC
©2.4A
5.0VAC
©6.0A
SEC. 4
6.3VAC

ITEM
No.
L2
L3
L4
L5
L6
L7
L8
L9
HO
Lll
L12
L13
L14
LI 5
L16
LI 7
L18
L19
L20
L21
L22
L23
L24
L25
L26
L27
L28
L29
L30
LSI
L32
L33
L34
L35
L36
L37
L38
L39
L40
L41
L42
L43
ITEM
No.
Ml
ITEM
No.
M2
M3
ITEM
No.
r
use
Ant. Coll
Ant. Coll
IF Trap
Ant. Shunt
Ant. Shunt
IF Trap
FM Trap
Ant. Coils
RF GridCoils
HF Grid Coil
RF Plate Coils
RF Plate Coil
RF Coupling
Coil
Video Trap
Fil. Choke
Mixer Grid
Coils
Mixer Grid
Coil
Osc. Coils
Fil. Choke
Fil. Choke
Fil. Choke
Conv. Plate
1st. Video IF
2nd Video
IF Primary
2nd Video
IF Secondary
Fil. Choke
3rd Video IF
4th Video IF
Sound Take-
Ott
Peaking Coil
Peaking Coil
4. SMC Trap
Peaking Coil
Peaking Coil
Sound IF
Ratio Det.
Trans.
Horiz. Osc.
Anti-Ringing
Coil
Anti -Ringing
Coil
Anti -Ringing
Coil
Width Coil
Horiz. Lin.
TYPE
3AG
PARTS LIST AND DESCRIPTIONS (Continued)
PRI.
.en
.en
on on
on
on
on
on
on
on on
on
on
on
on
RATING
1/4A
BASE TYPE
Bayonet
Bayonet
PART NAME
on
on
on
on
on
on .sn
.on
.in
.in
on .2n
,2n
6.2n
3. en
i2n
sn
i2n
7.sn
s.4n
4.2n
7on
2,sn
.72n
.72n
i2on
I2n
DC RES.
73600
SEC.
.en
.en
FUSE
VOLTS
7.5
7.5
.in
.252
.2n
.2n
3.2n
.2n
44n
M4 RF Tuner
'5th Video IF
Resistor
M5< Capacitor
Capacitor
Crystal
76675
V, RF Choke
M6 Switch
76493
M7 Focus Magnet 76652
M8 Ion Trap
76141
B3.B4 Trimmer
52217
-Knob
76595
Knob
76625
Knob
76596
Knob
76593
Knob
76624
Knob
76594
Knob
76591
Knob
76623
Knob
76592
Knob
74963
Knob
74001
Knob
75464
Knob
76597
Knob
76626
Knob 76598
RCA
PART No.
COILS (RF-IF)
REPLACEMENT DATA
RCA
PART No.
73591
73591
76542
76538
76537
76541
76540
76554
76556
76561
76553
76529
76562
76535
73477
76551
76560
76546
76563
76564
76528
76432
76434
76435
73477
76433
76433
76437
76646
76509
71526
76647
76438
76439
76440
76510
76640
76640
76484
76483
AMPS.
.2
.2
RCA
PART No.
REPLACEMENT DATA
HOLDER
BEAD
COLOR
White
White
MERIT
PART No.
TV-151
TV-185
TV- 182
TV-108
TV-I10
MWC-2
FUSES
FUSE
318.250
LITTELFUSE
PART No.
DIAL LIGHTS
me
PART No.
CL-1
CL-1
CL-1
HOLDER
REPLACEMENT DATA
RCA
PART No.
U765
H765
MISCELLANEOUS
NOTES
"\n 1
Type No. 51
Type No. 51
8MMF lost. Assy. Complete
10MMF t PT. #76436
1N60 \)
Tone lor Phono and TV
NOTES
}
{
\a Matching Trans. Complete.Part #7653
\
Complete with Rotor, Coils.and C13
Complete with Rotor, Coils, C12, R9 and RIO.
Complete with Rotor, Coils C23 and R16.
Includes Trimmer . 8-3. 8MMF
Complete with Rotor, Coils, C21, C22, H17, R18, and R19
Channel 13
Complete with Rotor, Coils, C25 and C26
Includes Trap
Includes Sound Trap
Includes Adj. Sound Trap
Tap at 5n
72 Microhenries, Orange, Red Dots, Wound on 3.3K Resistor
500 Microhenries,Green,Orange Dots, Wound on 6. 8K
Resistor.
Blue.Yellow Dots, Wound on 47MMF Cap.
250Mlcrohenries,Green Dot
ISOMicrohenries, White, Yellow Dots, Wound on
22K Resistor.
Tapat .2n
4. 7Microhenries
1. 5Microhenries
1. 5 Microhenries
Horiz. Drive and Horiz. Lock (Dual) 10-160MMF
Brightness, Vert, Hold (Maroon)
Brightness Vert. Hold (Tan)
Brightness Vert. Hold (Beige)
Channel Selector (Maroon)
Channel Selector
(Tan)
Channel Selector
(Beige)
Fine Tuning
(Maroon)
Fine Tuning
(Tan)
Fine Tuning
(Beige)
Contrast, Horiz. Hold and OFF/ON Volume (Maroon)
Contrast Horiz. Hold and olf/on Volume (Tan)
Contrast, Horiz. Hold and off/on Volume (Beige)
Tone-TV Phono (Maroon)
Tone-TV Phono (Tan)
Tone-TV Phono (Beige)
REMARKS
NOTES
PAGE 16