RCA-Victor-Co-Inc-242 电路原理图.pdf

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1、PAGE 520-B MODELS 143, 242, 243,341AND 342 Eight -Tube, Four -Band, A. C., Superheterodyne Receivers andRadio -Phonographs MODEL 143 MODEL 341 MODEL 24 2 REFER TO INDEX FOR DATA ON AUTOMATIC RECORD CHANGER MODEL 341 MODEL 243 MODEL 342 ELECTRICAL SPECIFICATIONS Voltage Rating 105-125 Volts and 100-1

2、30/195-250 Volts (DoubleRange) Frequency Rating 25-60 and 50-60 Cycles Power Consumption. RADIO ONLY 130 Watts (All Frequencies) Frequency Rating 25, 30, 40, 50 and 60 Cycles Power Consumption.MODELS 341 8. 342 170 Watts, 60 Cycles Type and Number of Radiotrons 2 RCA -6D6, I RCA -6A7, I RCA -75, 1 R

3、CA -76, 2 RCA -42, 1 RCA-5Z3 -Total, 8 Tuning Frequency Range Maximum Undistorted Output Maximum Output 5.0 Watts Type of Record Changer.MODEL 341 Record Ejector Type Capacity of Record Changer Eight 10 or seven 12 Records Type of Magnetic Pickup. Low Impedance, Viscoloid. Turntable Speed 333 R. P.

4、M. and 78 R. P. M.M. X- 140 K. C.- 410 K. C. Band A - 540 K. C.- 1720 K. C. Band B-1720 K. C.- 5400 K. C. Band C 5400 K. C.-18,000 K. C. 4 0 Watts Type of Magnetic Pickup. MODEL 342 High Impedance, Viscoloid Turntable Speed 78 R. P. M. RCA VICTOR DIVISION OF RADIO CORPORATIONOF AMERICA, CAMDEN N. J.

5、, U. S. A. 收音机爱 好者资料库 RadioFans.CN L2R1 23100 900, TI 11F SPAM. 4036 C8 500 IODIFD lr 295 C44765 LSL10 134 140 13 (100 i - 5000R4 1C14 -uI,z4 42500 Jf0.1 s R30 C54 6500 $oMFD 831504e C55 L 156407,0 2850C51 C 32 es -I40 28033.-. C 34 100 IF,135C30 232 UT. 1,8418.04 85.14085-140A.C.15 LEGmAIFDWOO. 8.5

6、 L C 53 85-140 FD D SesoD I II 0152 ES AMER TRANSFORMER CONNECTION FOR240 V. R 32 250000 TotAL 340 00 L 441 0, w0 Cog 400 w0. A C 60;00 55 00 12 21 LMfG R 52 7 M0y 00 MM. Schematic Circuit Diagram-Sensitivity Control Change withBand position II 514 OUTPUT 425 82 50000 304g 49 .0001 MI D. Co ra-Sfi A

7、OIA 50 34004 so T3 cc IIF 32 50 Lb USED ON TABLE MODEL 收音机爱 好者资料库 RadioFans.CN RR 0.1 C4-3-20 3 7.4C4 MIKA11-450 T0s 1 5 MFD. TI 110 T VAMP,Ca DSC .-A. .c. 4043co1.9L10 R4 N5410.140.25 i DO A, Czt -6 35Lil , cs 1.11.8F D. ,Z - 9.- g 9, -20 1 ,3, 1.-7:11.Lik .MMFD /1A :3 5E545. CONTe C12-3-20 MAD -D.

8、Cl. DASD - 04.10 AC_ CI5 5C11 -205o toFa MM. loopoo ce-o 5002FOLD. Changes in 1936 Production: (Do Not ApPly to Model 341) Comitted. C24 changed to 340 mmfd. R6, R11, R13 changed to 2600 ohms. R16 changed to 1.1 megotun. 931 C28 -3-20 oociFD. L 36 100 L 259 9FD :.5L26 5 L 32 a-90 * g.- 9959.- AMOR 4

9、. on 3-20,.,/ si2o/ :)4 6 0.1re A tWi C24 3-2oq L22 o I.5 c Z1 oL2 *050 IANAFD C54 4,Z - ,3 MNFO. C 31 10010 005o R12 400 C30, 01 MID 1 IF. C35C342.DLT 404 05-14065-140*C:75 M1NVJMCI I.29-2 r C. POWER TRANSFORMER - CONNECTION FOR 240 V. 230 250,000 To781. C40ZOO 3s.RFD A, a -Schematic Circuit Diagra

10、m-Fidelity Change with Band position 114:111. 419 J C. OUTPUT 425 R2 30 Doo C59 40D HI,L41 TZ 14-4 404.10009 C49 ,350. R e 52 2 .441170 mmiD 00042 WO. T3 30 RD Ly USED ON AAAAA MODEL 收音机爱 好者资料库 RadioFans.CN PAGE 5 2 3-B TI 143, 2421 243, 341 & 342 REFER TO INDEX FOR DATA ON AUTOMATIC RECORD CHANGER

11、ata. 00 .010. HO1 e = -9 46 0vatCOAT T 4R49 c. 200.000r OSart MODEL 341 Phonograph Wiring Schematic Diagram. TI MODEL 342. Phonograph Wiring Schematic Diagram. INTERNAL CONNECTIONS OF ANT. COILS NOT RNAL CONNECTIONS Of R.F. COILS .-EA1,410,40 61.4 POWER TRANS. INTERNAL WIRING INTERNAL CONNECTIONS Of

12、 CBE. COILS ,2-inkmrlATIVIRYT GR. TERS/A GE INTERNAL ONINCTIRANS.ONS IN T I Nw1 Js INTRANOE CONNECTIONS OT CAP. PACK 014 ERE tt4. 1.!- I. F. TRANS. ONO, r,1.r. TRANS. Changes in Models: 1st Prod: 2nd Prod: 3rd Prod: 1934 - Sensitivity change withband position. (models 143 and 242) 1934 - Fidelity ch

13、ange with bandposition. (Models 143, 242 and 341) 1935 - Fidelity change with bandposition. (Models 143, 242, 243 and 342). C17 omitted C24 changed to 340 mmfd. R6, R11 and it13 changed to 2600 ohms. R16 changed to Li megohm. RE ISIVIE BOARD CONNECTIONS RESISTOR BOARD CONNECTIONS -Sensitivity Contro

14、l Change with Band position T Al RESISTER NAND CONNECTIONS ZIP RESISTOR BOARD CONNECTIONS -Fidelity Change with Band position FIDELITY LINK It will be noted that a small link is mounted on the rear apron of the chassis which isclosed on table models and open on console models. The purpose of the lin

15、k is to increase the low frequency output of the receiver when open. PACE S24- 143, 242, 24 3, 341 & 342 R59, /1162 200,000 .7/ VOL CONTROL. YELLOW - RED TR. SHIELD EXT BLUE BLACK S RED GREEN BRowt4 INPUT TRANSF. ReO 25,000 YELLOW Ls3 3250 060 0.0i R F142 20000./20.44,4 VOL. CONTROL o YELLOW-4 RED T

16、R. SHIELD _sew EXT. &Luc BLACK YELLOW -RED 12 34 5 7 teLA CDAIKNSATOR CK UNIT RED GREEN BROWN SHIELD EXT. RED RED R4,4 15oo RED & /BLACK C44 175R 5o Rzo 0r5c, 2 Eoo o RED k BLACK INTERNAL CONNECTIONS OF INPUT TRANSFORMER CHASSI S T R BD. PHONO. TERM. BD. LtNN 40 LINKS UEt, -BROWN GREEN &YELLOW SPEAK

17、ER CABLE INTERNAL CONNECTIONS OF COMPENSATOR UNIT. SHIELD Err- BLUEg SLACK= / ( GREEN RED GLUE BLACK BLUE MODEL 341 CHASSIS TERM. BD. PNONO. TERM. BD. g i0 OPEN 24 BROWN c SPEAKER - Assembly Wiring SPEAKER CABLE 51111LD EXT. BLUE C 4 -GREEN SPEAKER MODEL 342 -Phonograph Wiring Diagram PAGE 525-B 143

18、, 242, 243, 341 & 342 (:7:43295v Q290 v 12v0 2112Av 01.? OUTPUT cRj215 v OS 0It 22v0 242,., 063/ OUTPUT 6.36TALtt.-C.%2v 0 )nO v 04zi 0.4.1 0.252v kt AWL211111. 4. R.EAMPL. Itt DET. OSC. 225v 4.1(61v. n.41v. 05.0v. 763vas. 00 MA 11 12.MAREct CANNOT OF MEASURED W/TII ORO/NARY rouheitR ALL D. C. VOLTA

19、GES ARE TO GROUND -Padiotron Socket Voltages INTERNAL CONNECTIONS Or MAKER -Table Loudspeaker Wiring -Table Loudspeaker Wiring- With Cable Plug Console Loudspeaker Wiring Console Loudspeaker Wiring- With Cable Plug PAGE 526-B 143, 242, 243, 341 8. 342 C) SOO KZ.175 Kt 2-t TRANS. ti c - / Alignment P

20、rocedure -Location of Trimmer Capacitors With tuning condenser fully meshed set point- er to coincide with horizontal line at low frequency end of A Band scale. STEP CONNECT HIGH SIDE OF TEST OSC.TO - TUNE TESTOSC TO - TURN RADIO DIAL TO ADJUST THE FOLLOWING FOR MAX. OUTPUT 1 I-F Grid in series with

21、 0.01 mfd 480 Kc Quiet point near 600 Kc A Band S&P of 2nd I-F Trans. 2 1st De t. Grid in series with 0.0 imfd S&P of 1st I-F Trans. 3 Antenna in series with 200 mmfd 410 Kc 410 Kc XII Band Osc. R-F & Ant. Trimmers X Band 4175 Kc 175 Kc X Band 175 Kc Trimmers Rock Gang 5Repeat Step 3 61720 Kc 1720 K

22、c A Band Osc. R-F & Ant. Trimmers A Band 7600 Kc goo Kc IIA* Band 600 Kc Trimmers Rock Gang 8Repeat Step 6 9 Antenna in series with 300 ohms 5160 Kc 5180 Kc B Band osc.t R-FA & Ant. Trimmers B Band 1018000 Kc 18 Mc C Band osc.t R-FA & Ant. Trimmers C Band Osc.tracks 460 Kc above signal on all bands.

23、 tUsexinintustcapacity peak. Use maxisua capacity peak - ROCK GANG. / General Connections -Magnetic Pickup Connections- 240 V. DLACK-RED TR RIO VGREEN 4.7w BLACK RED- SLACK RED -SLACK BLACK -RED TR. TAPE USE FOR PM. MOTOR ONLY Ti RED DROWN 237nBROWN - SLACK-, BROWN YELLOW BLUE BLUE 1 INTERNAL CONNEC

24、TIONS OF POWER TRANSF. PAGE 527-B 143, 242, 243, 341, & 342 REPLACEMENT PARTS Insist on genuine factory tested parts, which are eadily identified and may be purchased from authorized dealers Stock No. DESCRIPTION List 4632 4379 4427 4244 3861 4633 4635 4697 3937 4248 4811 4411 4183 4412 4409 4634 45

25、24 4615 4628 6512 3787 4212 4624 3888 4417 4836 3877 4415 4645 4791 I/ 4885 4840 3750 7790 4619 4626 4358 4693 7810 7803 7808 7805 7807 RECEIVER ASSEMBLIES Board -Terminal board -Two terminals and link -For changing fidelity Board -Antenna terminal board Bracket -Volume control, tone control or nois

26、e suppressor mounting bracket Cap -Contact cap -Package of 5 Capacitor - Oscillatortrimmercapacitor (C21, C25) Capacitor -50 mmfd. (C19) Capacitor -100 mmfd. (C41) Capacitor -200 mmfd. (C52) Capacitor -300 mmfd. (C8) Capacitor -300 mmfd. (C8) Capacitor -340 mmfd. (C24) Capacitor -360 mmfd. (C24) Cap

27、acitor -400 mmfd. (C59) Capacitor -1120 mmfd. (C27) Capacitor -1120 mmfd. (C43) Capacitor -1120 mmfd. (C52) Capacitor -2850 mmfd. (C29) Capacitor -2850 mmfd. (C17, C56). Capacitor -0.004 mfd. (C49, C50) Capacitor -0.005 mfd. (C43) Capacitor -0.01 mfd. (C48) Capacitor -0.01 mfd. (C44) Capacitor -0.01

28、 mfd. (C58) Capacitor -0.05 mfd. (C37) Capacitor -0.05 mfd. (C5, C15) Capacitor -0.05 mfd. (C5, C15, C37) Capacitor -0.1 mfd. (C38) Capacitor -0.1 mfd. (C18) Capacitor -0.1 mfd. (C7, C14, C30, C39, C57) Capacitor -0.1 mfd. (C7, C18, C38) Capacitor -0.1 mfd. (C14, C30, C39, C57). Capacitor -0.25 mfd.

29、 (C47) Capacitor -0.25 mfd. (C47) Capacitor -10 mfd. (C53, C54) Capacitor pack -Comprising one 0.5 mfd , one 10 mfd. capacitor (C42, C51) Capacitor pack -Comprising one 4 mfd., one 10 mfd. and one 8 mfd. capacitor (C45, C46, C55) Clamp -Electrolyticcapacitor clamp -For capacitor stock No. 7790 Clamp

30、 -Electrolytic capacitor clamp -For capacitor stock No. 4626 Coil -Antenna coil PB-LW (L1, L2, L5, L6, Cl, C3) Coil -Antenna coil B.S.W. (L3, L4, L7, L8, C2, C4) Coil -Detector coil P.B.-L.W. (L9, L10, L13, L14, C9, C11) Coil -Detector coil B.-S.W. (L11, L12, L15, L16, C10, C12, C13) Coil -Oscillato

31、r coil B.S.W. (L19, L20, L23, L24, C23, C28) Stock No. DESCRIPTION 7809 7801 4806 4371 4631 10907 3376 4604 4625 3704 4672 4338 4812 4242 4436 2871 3381 3998 3602 3118 3619 3033 4783 6242 3078 4623 2240 4418 4618 7800 4742 4627 O Coil -Oscillator coil P.B.-L.W. (L17, L18, L21, L22, C22, C26) Condens

32、er -3 -gang variable tuning condenser (C6, C16, C20) Condenser -3 -gang variable tuning condenser (C6, C16, C20) Cover -Fuse mount cover CoverTerminal strip cover Fuse -3 -ampere -Package of 5 Mount - Fuse mount - 105 -125 -voltin- strument Mount -Fuse mount for 200 -250 -volt in- strument Resistor

33、-Wire wound resistor -Comprising one 6500 -ohm -4500 -ohm and 450 sec- tion (R30, R31, R58) Resistor -400 ohms -Carbon type-% watt (R9, R3, R12) -Package of 5 Resistor -500 ohms -Carbon type-% watt -Package of 10 (R10) Resistor - 2500 ohms - Carbon type - watt (R6, R11, R13) -Package of 10. Resistor

34、 - 2600 ohms - Carbon type - 54 watt (R6, R11, R13) -Package of 5 Resistor - 3000 ohms - Carbon type - watt (R17) -Package of 5 Resistor - 5000 ohms - Carbon type - watt (R22) -Package of 10 Resistor - 5000 ohms - Carbon type - 34 watt (R22) -Package of 5 Resistor -10,000 ohms -Carbon type-% watt (R

35、20) -Package of 5 Resistor -15,000 ohms -Carbon type-% watt -Package of 5 (R20) Resistor -60,000 ohms -Carbon type-% watt -Package of 5 (R8, K19, R1P, R23, R26) Resistor -100,000 ohms -Carbon type-% watt -Package of 5 (R2, R7, R18, R18). Resistor -400,000 ohms -Carbon type-% watt (R59) -Package of 5

36、 Resistor - 1 megohm - Carbon type - watt -Package of 5 (R16, R21 R21 . Resistor -1,100,000 ohms -Carbon type - I4 watt (R16)Package of 5 Resistor -2 megohms - Carbon type - watt (R15, R21, R28) -Package of 5 Resistor -10,000 ohms -Carbon type-3 watt (R27) -Package of 5 Resistor -13,000 ohms -Carbon

37、 type -Y watt (R29) -Package of 10 Resistor -30,000ohms -Carbontype -1 watt (R25) Resistor -100 ohms -Flexible type (R1, R4) -Package of 10 Rheostat -Sensitivity control (R5) Shield -Antenna, detector or oscillator coil shield Shield -Antenna, detector or oscillator coil shield Shield -First detecto

38、r -Oscillator Radioeron shield Sensitivity change models only. 1935 Productions only. List PAGE 52 B-B 143, 242, 243, 341 & 342 Replacement Parts (Continued) Stock No. DESCRIPTION ListStock No. DESCRIPTION List 7488Shield-First detector-Oscillator Radiotron shield top 4827 Gear-Spring gear assembly

39、complete with hub, pinion, gear, cover and spring 6956 Shield-First detector-Oscillator Radiotron 4704 Indicator-Band indicator-Celluloid shield top 4367 Indicator-Station selector vernier pointer - 4452Shield-I. F. amplifier Radiotron shield. . Small 4629Shield-I. F amplifier Radiotron shield top.

40、4520 Indicator-Station selector main pointer- 3950Shield-I. F. amplifier Radiotron shield 3943 Large Screen-Translucent screen for dial light - 4521 Shield-I. F. transformer shield Package of 2 4452 Shield-Second detector-A.V.C. Radio- tron shield 3993 Screw-No. 6-32-5/32 square head set screw for b

41、and indicator operating arm or con- 462.9Shield-Second detector-A.V.C. Radio-denser drive-Package of 10 tron shield top4377 Spring - Band indicator and arm tension 4663Shield-Oscillator coil wiring shield-Shields spring-Package of 5 oscillator coil wiring from R.F. coil-4360Stem-Station selector poi

42、nter stem Complete with terminal board, clamp and resistor 4378 Stud-Band indicator operating arm stud- Package of 5 4664 Shield-Oscillator wiring shield-Shields os- dilator coil wiring from R. F. coil -Com- plete with terminal strip and resistor 1934 PRODUC TION REPRODUCER ASSEMBLY 4630Shield-R. F.

43、 amplifiei-Radiotron shield (TABLE MODEL) 4665Shield-R. F. coil wiring shield with two9534 Coil-Field coil (L31) resistors and terminal board 9533 Cone-Cone mounted and centered on hous- 3529Socket-Dial lamp socket ing (L30) 3859Socket -4 -contact Radiotron socket 9532 Reproducer complete 7484Socket

44、 -5 -contact Radiotron socket 9535 Transformer-Output transformer (T3). 4784Socket -4 -contact Radiotron socket 48i4Socket -5 -contact Radiotron socket REPRODUCER ASSEMBLY 4786Socket -6 -contact Radiotron socket (CONSOLE MODEL) Socket -7 -contact Radiotron socket 4636 Cable-4-conductor-Reproducer ca

45、ble 7485Socket -6 -contact Radiorron socket 9537Coil-Field coil magnet and cone support 3572Socket -7 -contact Radiotron socket(L31) 4617 Switch-Range switch (S2, S3, S4, S5, S6,8969Cone-Reproducer cone-Package of 5 (L30) S7, S8, S9, S10, S11, S12) 9536Reproducer complete 4616Tone control (R24, 51)

46、4637 Transformer-Output transformer (T3). 48138Tone control (R24, Si) 19.35 PRODUCT ION 4431Transformer-Firstintermediate frequency transformer (L25, L26, C32, C33, C34). REPRODUCER ASSEMBLY 9505 Transformer-Power transformer -105-125 volts -50-60 cycles (TO)5038 (TABLE MODEL) Cable-4-conductor-Repr

47、oducer cable with female connector plug 9506Transformer-Power transformer -105-125 volts -25-40 cycles9534Coil-Field coil (L31) 9507Transformer-Power transformer -105-250 volts-40-60 cycles 9533 Cone-Cone mounted and centered on hous- ing (L30) 4433 Transformer-Second intermediate frequency transfor

48、mer (L27, L2B, C35, C36, C40, 5039 Connector -4 -prong male connector for re- producer cable R14) 5040 Connector -4 -contact female connector for 4620 Transformer and reactor-Interstage trans- reproducer cable former and reactor (T2, L29) 9593 Reproducer complete 4809 Volume control (R32) 9535 Trans

49、former-Output transformer (T3). 4519Volume control (R32) REPRODUCER ASSEMBLY DRIVE ASSEMBLIES (CONSOLE MODEL) 4362 Arm-Band indicator operating arm5038 Cable-4-conductor-Reproducer cable with 10194 Ball-Steel ball for variable condenser drive female connector plug assembly-Package of 20 9591Coil-Field coil magnet and cone support (L31) 4422 Clutch-Tuning condenser drive clutch as- 8969 Cone-Reproducer cone (L30)-Package of 5 sembly-Comprising driveshaft,balls, ring, spring and washers assembled 5039Connector -4 -prong male connector