RCA-Victor-Co-Inc-9TX-50 电路原理图.pdf

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1、MANUAL OF 1940 MOST POPULAR SERVICE DIAGRAMS Model 9TX-50 Series (Chassis No. RC-435) lSTDET.8,0SC. I.F. AMPL DET.A.F. watt (RC -435) 12679 Resistor -2.2 meg. watt 13601 Resistor -10 meg. j watt 32968 Capacitor -2 gang variable tuning 33293 Shaft-Tuning knob shaft and bushing 13057 Capacitor -60 mmf

2、d. 33557 Socket-Dial Light 12488 Capacitor -250 mmfd. 32537 Socket-Tube Socket 12952 Capacitor -300 mmfd. 31615 Spring-Drive cord tension spring 4838 Capacitor-.005 mfd. 33296 Spring-Drum retaining spring 32787 Capacitor-.05 mfd. 32966 Transformer-I. F. Input 4839 Capacitor-.1 mfd. 32967 Transformer

3、-I. F. Output 12484 32576 Capacitor-.25 mfd. Capacitor-Electrolytic 20-12 mfd. 33291 Volume Control 32962 32634 Coil-Oscillator coil Cord-Drive cord SPEAKER ASSEMBLIES 33662 Drum-Drive cord and indicator drum (Speaker No. 39105-21 33295 Indicator-Dial pointer 30460 Lamp-Pilot Lamp 34569 Speaker-Comp

4、lete-less transformer 33663 Loop-Antenna loop 33294 Pulley-Drive cord pulley 33741 Transformer-Output 33558 13428 Resistor -86 ohms Resistor -150 ohms, watt MISCELLANEOUS ASSEMBLIES 14561 Resistor -220 ohms, I. watt 33289 Dial-Dial Scale 13998 Resistor -22,000 ohms, I watt 33006 Foot-Rubber foot for

5、 12738 Resistor -27,000 ohms, watt 32571 ,cabinet Knob-Tuning or volurde control knob 12264 Resistor -220,000 ohms, I. watt 33742 Socket-Phonograph input socket 收音机爱 好者资料库 RadioFans.CN LAGE 245-C 9TX 50, 40X30, 4001, 40X5O SERIES Replacement Parts MODELS 40X-30, 40X-31 Insist on genuine Factory -tes

6、ted parts, which are readily identified and may be purchased From authorized dealers. STOoCK N DESCRIPTION STOCK ON K DESCRIPTION CHASSIS ASSEMBLIES 12264 12285 Resistor -220.000 ohms, 4 watt Resistor -470,000 ohms, 4 watt 13057 Capacitor -60 mmfd. 12679 Resistor -2.2 rneg., 4 watt 12488 Capacitor -

7、250 mmfd. 13601 Resistor -10 meg., 4 watt 12952 Capacitor -300 mmfd. 32945 Shaft-Tuning knob shaft and bearing 4838 Capacitor-.005 mfd. 33742 Socket-Phonograph input socket 4937 Capacitor-.01 mfd. 33557 Socket-Pilot lamp socket 4870 Capacitor-.025 mfd. 32537 Socket-Tube socket 32787 Capacitor-.05 mf

8、d. 30585 Spring-Tuning condenser drive cord spring. 4839 Capacitor -0.1 mfd. 32966 Transformer-First i -f transformer 12484 Capacitor-.25 mfd. 32967 Transformer-Second i -f transformer 32576 Capacitor-Electrolytic, one section 20 mid., one section 12 mfd. SPEAKER ASSEMBLIES 39105-2 34259 Coil-Oscill

9、ator coil 32968 Condenser-Variable tuning condenser 32964 Transformer-Output transformer 32578 Control-Volume control and power switch 32634 Cord-Drive cord MISCELLANEOUS ASSEMBLIES 32946 Drum-Variable condenser drive drum and indi- cator disc 32942 Dial-Glass dial scale 11765 Lamp-Pilot lamp 32447

10、Knob-Ivory tuning, volume and power knob 33807 Loop-Antenna loop for 40X30 Model 40X31 33808 Loop-Antenna loop tor 40X31 32571 Knob-Tan tuning, volume and power knob 33558 Resistor-Series resistor -86 ohms Model 40X30 13428 Resistor -150 ohms, 4 watt 32943 Nut-Speed nut to fasten dial 14561 Resistor

11、 -220 ohms 4 watt 13998 Resistor -22,000 ohms, 4 watt 12412 Resistor -47,000 ohms, 4 watt Burnt -Out I -F Transformer: A few cases have been reported in Models 40X-30, -31 where the secondary of the 1st I -F transformer has burned out. Investigation ,showed that this was caused by a combination of t

12、wo things: (a) The low ends of the primary and secondary of the loop antenna were reversed, so that the low -end of the primary was connected to the AVC bus. (b) A grounded antenna lead was connected to the antenna terminal on the back of the receiver. This placed 110 volts on the grid of the I -F t

13、ube, drawing sufficient current to burn aut the secondary of the 1st I -F transformer, and also the IF bias resistor. The remedy is to re -wire the loop antenna correctly as shown in the Service Data. The low -end of the primary should be connected through the .1 mfd. capacitor to chassis, and the l

14、ow -end of the secondary should be con- nected to the AVC bus. MODELS 40X-30, 40X-31, 40X-50 Additional Replacement Part: Stock No. 11315 Capacitor-.015 mfd. (output tube plate by-pass in sonie production of Model 40X-50) 11765 Lamp-Dial lamp 34569 Speaker-Complefe-less transformer Replacement Parts

15、 MODELS 40X-50 Insist on genuine Factory -tested parts, which are readily identified and may be purchased From authorized dealers. STOCK No. DESCRIPTION STOCK DESCRIPTION CHASSIS ASSEMBLIES 30585 Spring-Drive cord spring (RC -436) 33557 Socket-Dial light socket 33745 Cable-Phono. cable 32537 Socket-

16、Tube socket 13057 Capacitor -60 mmfd. 32966 Transformer-I-F input transformer 12488 Capacitor -250 mmfd. 32967 Transformer-I-F output transformer 12952 Capacitor -300 mmfd. 32545 Volume control 4838 Capacitor-.005 mfd. 4870 Capacitor-.025 mfd. SPEAKER ASSEMBLIES 32787 Capacitor-.05 mfd. (39105-2) 48

17、39 Capacitor-.1 mfd. 12484 Capacitor-.25 mfd. 32964 Transformer-Output transformer 32576 Capacitor-Electrolytic, 20-12 mfd. 32968 Capacitor-Variable tuning MISCELLANEOUS ASSEMBLIES 32962 Coil-Oscillator coil 33744 Dial-Glass dial scale 32634 Cord-Drive cord . 33743 Drum-Drive drum 32895 Knobs-Tuning

18、 and volume-Models 40X50, 40X51, 40X52, 40X55, 40X56, 40X57 33663 Loop-Complete antenna loop (Walnut) 33558 Resistor -86 ohms 12071 Resistor -120 ohms, 4 watt 32893 Knobs-Tuning and volume-Model 40X53 13428 Resistor -150 ohms, 4 watt (Red) 14561 Resistor -220 ohms, 4 watt 13998 Resistor -22,000 ohms

19、, 4 watt 32571 Knobs-Tuning and volume-Model 40X54 12412 Resistor -47,000 ohms, 4 watt (Tan) . 12264 Resistor -220,000 ohms, 4 watt 12285 Resistor -470,000 ohms, i watt 33742 Socket-Phonograph input socket 12679 Resistor -2.2 meg., i watt 13601 Resistor -10 meg., i watt - 33061 Shaft-Drive shaft PAG

20、E 246-C MODELS 9TX-50, 9TX-50M, 2nd Production (Chassis No. RC -454) MODELS 40X-52, 40X-55, 2nd Production (Chassis No. RC -453) Five -Tube, Single -Band, AC -DC, Superheterodyne, Loop Receivers Model 40X-52 40X-55 9TX-50 9TX-50M Model 9T. -30 Description IVORY MODEL Ivory Finish HONEY MAPLE MODEL H

21、oney maple finish. Light Mahogany Cabinet Regular Mahogany Cabinet Model 40X-55 Electrical and Mechanical Specifications Model 40X-52. FREQUENCY RANGE 540-1,650 kc POWER SUPPLY RATINGS Intermediate Frequency 455 kc A -C Rating 105-125 volts, 50-60 cycles, 30 watts D -C Rating 105-125 volts, direct c

22、urrent, 30 watts TUBE COMPLEMENT (1) RCA-2SA7 1st -Detector -Oscillator POWER OUTPUT (125 volt, GO cycle supply) . (2) I2CA-12SK7 (3) RCA-12SQ7 (4) RCA-60LGGT I -F Amplifier 2nd -Detector, 1st A -F and A.V.C. Power Outpdt Undistorted .6 watts Maximum 2.0 watts (5) RCA-35Z5GT Half -Wave Rectifier LOU

23、DSPEAKER Dial Lamp (1) Mazda 51, 7.5 volts, 0.2 amp. Type 5 -inch Electrodynamic MODELS 9TX-50, 9TX-50M 2nd Production, RC -454: Add Stock No. 33613 Back-Back cover and loop complete. MODELS 40X-52, 40X-55 2nd Production, RC -453: Add Stock No. 35612 Back-Back cover and loop complete. Replacement Pa

24、rts Insist on genuine factory -tested parts, which are readily identified and may be purchased from authorized dealers. STOCK No. DESCRIPTION STOCK O K DESCRIPTION CHASSIS ASSEMBLIES 32545 Control-Volume control and power switch (40X - (RC -453, RC -454) 33291 52, 55) Control-Volume control and powe

25、r -switch (9TX- 34444 Bracket-Dial and lamp support (9TX-50, 50M) 50, 50M) 34447 Capacitor-Mica trimmer, 2.5 to 30 mndd. (C1) 32634 Cord-Tuning condenser drive cord 13057 Capacitor -60 mmfd. (C5) 34567 Drum-Variable tuning condenser drive drum 4838 Capacitor-.005 mfd. (C14, C15) (40X-52, 55) 4937 Ca

26、pacitor-.01 mfd. (C16) 34446 Eyelet-Used as pulley for drive cord (9TX-50, 11315 Capacitor-:015 mfd. (C17) 50M) 32787 Capacitor-.05 mfd. (C18) 11765 Lamp-Dial lamp 4839 Capacitor -0.1 mfd. (C12, C24) 34445 Pointer-Dial pointer (9TX-50, 50M) 12484 Capacitor -0,25 mfd. (C6) 14439 Resistor -100 ohms, I

27、 watt (R13) 34597 Capacitor-Electrolytic comprising 1 section of 20 13428 Resistor -150 ohms, watt (R9) mfd. and 1 section of 12 mfd. (C19, C20). 13998 Resistor -22,000 ohms, watt (R1) 34592 Coil-Loop loading coil 12264 Resistor -220,000 ohms, watt (R2, R7) 34443 Coil-Oscillator coil 12285 Resistor

28、-470,000 ohms, watt (R8) 34448 Condenser-Variable tuning condenser (40X-52, 12679 Resistor -2,2 megohm, 4 watt (R4) 55) 13601 Resistor -10 megohm, watt (R6) 34440 Condenser-Variable tuning condenser (9TX-50, 50M) 33061 Shaft-Tuning condenser drive shaft (40X-52, 55) RCA VICTOR DIVISION OF RADIO CORP

29、ORATION OF AMERICA, CAMDEN N. J., U. S. A. PAGE 247-C 9TX50, -M, 140X52, 140X55 Replacement Parts (Continued) STOCK No. DESCRIPTION STOCK No. DESCRIPTION 34332 Shaft-Tuning condenser drive shaft (9TX-50, 50M) SPEAKER ASSEMBLIES 40X-55 (RL86-1) 34449 Socket-Dial lamp socket 31319 Socket-Tube socket 3

30、2907 Cap-Dust cap 30585 Spring-Tuning condenser drive cord spring (40X52, 55) 35066 34450 Cone-Cone complete with voice coil Speaker -5 dynamic speaker complete with cone 31615 34441 Spring-Drive cord spring (9TX-50, 50M). Transformer -1st I.F. transformer 35056 and voice coil less output transforme

31、r Transformer-Output transformer 34442 Transformer -2nd I.F. transformer SPEAKER ASSEMBLIES MISCELLANEOUS (40X-52, 9TX-50 and 9TX-50M) 55) (39223-1) 33744 33289 Dial-Dial scale-glass (40X-52, Dial-Dial scale (9TX-50, 50M) 35065 Cone-Cone complete with voice coil 34016 Knob-Walnut tuning or volume co

32、ntrol knob 34450 Speaker -5 dynamic speaker complete with cone and voice coil less output transformer 34015 (40X-52, 55) Knob-Tuning or volume control knob (9TX-50, 34174 Transformer-Output transformer 50M) Alignment Procedure Output Meter Alignment -Connect the meter across the voice coil. and turn

33、 the receiver volume control to maximum. Test-Oscillator.-Connect the low side of the test -oscillator to the receiver chassis, through a .01 mfd. capacitor, and keep the out- put as low as possible. Steps Connect the test oscillator to- Tune test-osc. to- Turn Radio Dial to- Adjust the follow - ing

34、 for maximum peak output 1 Tuning Condenser stator (ant.) in series with .1 mfd. 455 kc Quiet point at 1,600 kc end of dial C7, C8, C9 (1st and 2nd I -F transformers) 2 Radiation Loop consisting of 2 turns of wire 18 in. in diameter located 4 to 6 feet from receiver 1,650 kc Full clockwise (out of m

35、esh) C4 (oscillator) 3 600 kc Resonance on 600 kc signal LI (Loop inductance) 4 1,400 kc Resonance on 1,400 kc signal C2 (Antenna) LOOP LOOR LOADING COI L 1T 067.6 05G I. F. AMPL. 125A7 BOITOM V,tw 25K li/F,E rS 9v. ( 6I. ANT. 00 ItC. 3.11 mI.T I. TMN4 9N ,GOEEN LIND I.E -AA Ns. /1 7-7-.t 73, 35ZSGT

36、 12557 t . 2507 !,Kb,-._./ K -,m U1 -fi .I40oN,Kr . 30L66T, 12EtA7 c40501 -2 -21600 . 4SSKC d/ BIST I A TJer AND TRIMMtR LOCATIONS TRANS Precautionary Lead 1. Green and blue leads from 1st I.F. transformer must be kept separated. 2. Dress yellow lead from loudspeaker under green lead front hum bucki

37、ng coil to prevent it from touching the 50L6GT. Antenna.-The set is equipped with a built-in loop antenna. If an outdoor antenna is used, it may he connected to the ANT terminal on rear of cabinet. It should not be longer than 101) feet. including lead-in. If it is longer, connect a 100 to 200 mmf.

38、ca- pacitor in series with the lead-in. Power -Supply Polarity.-For operation on d -c, the power plug must be inserted in the outlet for correct polarity. If the set does not function, reverse the plug. On a -c, reversal of the plug may re- duce hum. Victrola Attachment -A jack is provided on the re

39、ar of cabinet for connecting a Victrola Attachment into the audio -amplifying cir- cuit. The cable from the Victrola Attachment should be terminated in a Stock No. 31048 plug to fit the jack. DfT,A.F A.VC ti SQ7 55V. (UfI OArII VOI real 2rll,.I.E 044 500E R3 MODELS RIN 1r 47,000 OMITTED AND OMITTEO

40、AN - - COMMON - GND. 5i50LT 2 U-.2 12507J /Th SZJN I TUBE _0C-T121N ON 500E MOOt_S , IN7ICATES CNA55,5. CREEN c9 D BLACK C 12 4- O. 1 MFD. Rs VOL. CONTROL 250. 0002. VICTROLA I I -.-k MED cIS 005 MCD. R6 q MEC, C 24 0.I MCD, 35Z5GT-REGT C IB T .05 O. sAr.r I,ED OUT PUT 50l.6GT C 16 .01 MCD. RB 415.000 K433 2C 6 RED VVBo BLUE 400n 2D 20 Neal- jY112 MCD. tlLACK . isy-, YS/r rsOr Cn .015 MID.