CTC185A
RCA
E:fact® Technical Service Data
INDEX
Parts List
Coils & Transformers
Miscellaneous
Controls & Resistors, 2 pages
Capacitors & Electrolytics, 2 pages
Cabinet Parts
Semiconductors, 2 pages
Schematics ................... Location
Television ................. 2A, 2B
Television ................. 2C, 2D
Audio .......................... 3A
Power Supply .................. 2E
System Control ................ 2F
Tuner ......................2G, 2H
Placement Chart
Models Chassis
F19207BCTX1 CTC185A
F19205GYTX1 CTC185A
Circuitry not used in some versions.
Circuitry used in some versions.
Ground
Chassis ground
Common tie point
Taken from common tie point
Schematic voltage source tie point.
Cabling: Heavy lines reduce use of multiple lines.
Waveforms and voltages are taken from ground, unless
noted otherwise.
Waveforms taken with triggered scope and keyed rainbow
generator. Waveform voltage is peak to peak. Timebase
is per division. Waveforms shown at 10 divisions.
Supply voltages maintained as seen at input.
Voltages measured with digital meter and a 1000µV RF
signal, with colorbar pattern, applied to antenna terminal.
Controls adjusted for normal operation.
Capacitors are 50 volts or less, 5% or greater unless noted.
Electrolytic capacitors are 50 volts or less,
20% or greater unless noted.
Resistors are 1/2W or less, 5% or greater unless noted.
Value in ( ) used in some versions.
Measurements with switching as shown, unless noted.
Rated voltage shown on zener diodes.
For SAFETY use only equivalent replacement part,
see parts list.
3
A
SCHEMATIC NOTES
To purchase a complete paper version
of this service manual, order
PHOTOFACT
®
set #3960
To place the order, contact your local
Sams Distributor or call our Customer
Service operation at 1-800-428-7267.
For E:fact ordering or information,
use the following web site link.
http://www.hwsams.com/efact.html
Product #083960
© Copyright 1999
Howard W. Sams & Co. All rights reserved.
PARTS LIST
COILS & TRANSFORMERS
Item No. Function/Rating Mfr. Part No.
FB3101 Ferrite Bead 226467
FB3901 Ferrite Bead 226467
FB4110, 11 Ferrite Bead 215546
FB4401 Ferrite Bead 227410
FB4501 Ferrite Bead 215547
L2301 15µH 197613
L2302 VCO 215502
L2303 FM Tank 233056
L2305 10µH 175409
L2701, 02, 03 8.2µH 149170
L2705 10µH 175409
# L4000 (1) Yoke Horiz 3.1mH -
Vert 23.1mH
# L4001 Line Choke 190507
L4102 320µH 231466
L4200 Degaussing 221042
L4401 6.8µH 191141
L5001 180µH 231467
L7101 - 215507
L7102 - 236641
L7103 - 223929
L7104, 05 - 236642
L7106 - 215507
L7107 - 233057
L7108 - 233074
L7109 3.9µH 200559
L7110 - 233075
L7111 - 233076
L7112 - 231441
L7113 - 233077
L7114 - 231441
L7115 - 233078
L7301 - 231443
L7302 - 231444
L7303 - 233079
L7304 - 233080
L7305 - 236643
L7306 - 231448
# T4301 Horizontal Driver 215541
# T4401 (2) Horizontal Output 231530
# For SAFETY use only equivalent replacement part.
(1) Bonded part of CRT.
(2) Focus and screen controls are part of T4401.
PARTS LIST continued
MISCELLANEOUS
Item No. Description Mfr. Part No. Notes
CF1201 Filter 195702 4.5MHz
CF2301 Filter 181125 4.5MHz
# F4001 Fuse 175425 5Amp, 125V, Fast Acting
FL7102 Filter 181470 LC High Pass
IR3402 Receiver 226508 Remote
# K4201 Relay 190490 Degaussing
# KS5001 Socket 233120 CRT
# PW4001 Line Cord - AC, Polarized
SF2301 Filter 217318 SAW
SP1902 Speaker 183163 2 1/4" x 3 1/2", 32 Ohms, 1.5W
SW3410 Switch 215500 Channel Up
SW3411 Switch 215500 Power
SW3420 Switch 215500 Channel Down
SW3421 Switch 215500 Volume Up
SW3430 Switch 215500 Menu
SW3431 Switch 215500 Volume Down
# V5000 CRT A48AAB13 A48AAB13X02
Y2801 Crystal 161235 3.58MHz
Y3101 Crystal 217322 8MHz
Y4101 Crystal 227064 507kHz
Y7401 Crystal 182839 4MHz
Adapter AH0155 Antenna 75 To 300 Ohms
PC Board 235667 CRT
Transmitter 226551 Remote (CRK20A1)
# For SAFETY use only equivalent replacement part.
PARTS LIST continued
CONTROLS & RESISTORS
Item No. Function/Rating Mfr. Part No. NTE Part No.
# R1907 4.7 5% 1/4W 200197 QW4D7
# R1908 56 5% 3W 231514 3W056
R2302, 03 120K 2% 1/8W 180816 EW410
100K 5% 1/8W 176816 EW410
R2304 1000 2% 1/10W 197638 -
3000 2% 1/10W 194917 -
R2317 1000 2% 1/10W 197638 -
180 2% 1/10W 194918 -
R2801 30K 2% 1/10W 200176 -
R2804 27K 2% 1/4W 175326 QW327
27K 5% 1/4W 205565 QW327
# R3108 10 5% 1/4W 829010 QW010
R3111, 12 220 2% 1/4W 175324 QW122
220 5% 1/4W - QW122
R3202 120K 2% 1/10W 205370 -
120K 5% 1/10W - -
R3343 5100 2% 1/4W 175417 QW251
10K 5% 1/4W 175317 QW310
# R4001 2.7 10% 15W Wirewound 190487 -
# R4002 1000 5% 10W 231504 10W210
# R4004 1.8M 10% 1/2W 220333 HW518
# R4103 .51 5% 2W 196073 2WD51
# R4105 2 5% 1/4W 181419 QW2D0
R4111 100K 1% 1/10W 215221 -
# R4114 10K 5% 3W 189989 3W310
# R4119 10 5% 1/4W 829010 QW010
# R4121 1000 5% 1/2W 175350 HW210
# R4122 2200 5% 1/4W 175042 QW222
R4136 143K 1% 1/10W 184980 -
R4137 2870 1% 1/10W 231505 -
# R4146 430 5% 1W 831143 1W143
# R4147 220 5% 3W 231461 3W122
# R4305 4700 5% 3W 175368 3W247
# R4315 1000 2% 3W 231462 3W210
# R4402 91 5% 1/2W 227249 HW091
# R4404 360 5% 2W 231465 2W136
# R4507 1.5 5% 1W 178619 1W1D5
# R4511 1 10% 2W Wirewound 215577 -
# R4517 51 5% 1W 217314 1W051
# R4701 10 2% 1/2W Nonflammable 830010 HW010
# R4703 3.3 5% 3W Wirewound 195730 -
# R4704 82K 5% 1/2W 830382C HW382
# R4705 27K 5% 1/2W 206037 HW327
R4706 1270 1% 1/4W 231516 -
# R4707 3.6 5% 5W 235699 -
3.3 5% 5W 233073 5W3D3
# R4708 3000 5% 1W 200446 1W230
# R4710 3 5% 2W Wirewound 223898 -
# R4901 100 5% 1/4W 829110 QW110
# R4902 24.9K 1% 1/4W - -
26.7K 1% 1/4W 196081 -
28.7K 1% 1/4W 236691 -
28K 1% 1/4W 195731 -
# For SAFETY use only equivalent replacement part.
PARTS LIST continued
CONTROLS & RESISTORS continued
Item No. Function/Rating Mfr. Part No. NTE Part No.
# R4903 41.2K 1% 1/4W - -
34.8K 1% 1/4W 228939 -
32.4K 1% 1/4W 210066 -
39.2K 1% 1/4W 190469 -
# R4908 576K 1% 1/10W 231513 -
# R5001, 02, 03 20K 2% 2W Nonflammable 233034 2W320
# R5004, 05, 06 2200 10% 1/2W 502222 HW222
# R5010 2200 10% 1/2W 502222 HW222
R5012 270 2% 1/4W 178282 QW127
R5014, 16 300 2% 1/4W 175354 QW130
# R5018 2200 10% 1/2W 502222 HW222
R5019 6200 2% 1/4W 179316 QW262
7500 2% 1/4W - QW275
R5020 680 2% 1/4W 175312 QW168
910 2% 1/4W 203097 QW191
# R5021 1200 5% 1W 179782 1W212
# R7139, 40 1.8M 10% 1/2W 220333 HW518
RN4501 Network 215499 -
# RT4201 5.5 PTC Cold 207768 -
# For SAFETY use only equivalent replacement part.
PARTS LIST continued
CAPACITORS & ELECTROLYTICS
Item No. Rating Mfr. Part No.
C2303 120pF 5% 50V NPO 194902
C2701 3.3µF 20% 50V NP 224270
3.3µF 20% 100V 151119
C2803 18pF 5% 50V NPO 214028
15pF 5% 50V NPO 202907
C2805 120pF 5% 50V NPO 194902
C3101, 02 100pF 5% 50V NPO 193340
C3114, 15 27pF 5% 50V NPO 197604
C3121 100pF 5% 50V NPO 193340
C3124 47pF 5% 50V NPO 210689
C3306, 07 22pF 5% 50V NPO 194903
C3312 330pF 5% 50V NPO 205227
C3314 22pF 5% 50V NPO 194903
C3316 200pF 5% 50V NPO 218986
C3318 100pF 5% 50V NPO 193340
# C4001 .22 20% 125V 231451
.22 250V -
# C4003, 04 680pF 20% 1kV 190538
# C4007 680µF 20% 200V 190560
C4108 120pF 5% 50V NPO 194902
C4120, 24 680pF 20% 1kV 190538
C4134, 35 220pF 5% 50V NPO 205551
C4303 470pF 5% 50V NPO 214732
C4310 15pF 1% 250V NPO 223899
C4311 47pF 5% 50V NPO 210689
C4401 470pF 5% 50V NPO 195918
# C4402 .0064 2% 1.6kV 231456
.0064 2% 1.6kV 231455
# C4403 .32 5% 250V 223819
# C4406 470pF 5% 2kV 227068
C4702, 04, 06 680pF 20% 1kV 190538
C4710 .01 20% 1kV 137583
C4712 680pF 20% 1kV 190538
# C4904 .22 +80% -20% 25V 217298
C5001 .001 10% 3kV 120696
C5005 390pF 5% 50V N750 220630
C5006 330pF 5% 50V N750 147667
C5007 470pF 5% 50V N750 233025
# C7101 330pF 20% 125VAC 231454
330pF 20% 125VAC 235376
C7102 4pF +0pF -.25pF 50V NPO 214757
C7103 22pF 5% 50V NPO 194903
C7105 .75pF ±.25pF 50V NPO 214758
C7108 27pF 5% 50V N750 214760
C7110 1.5pF ±.1pF 50V NPO 223146
# C7114 100pF 20% 120V 217305
100pF 20% 125V 235376
C7117 2pF ±.5pF 50V NPO 194905
C7118 22pF 5% 50V NPO 194903
# C7120 330pF 20% 125VAC 231454
330pF 20% 125VAC 235377
C7124 27pF 5% 50V NPO 197604
C7127 120pF 5% 50V NPO 194902
# For SAFETY use only equivalent replacement part.
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