RCA-Victor-Co-Inc-9TX-32 电路原理图.pdf

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1、MANUAL OF 1939 MOST POPULAR SERVICE DIAGRAMS MODELS Chassis No. 9TX-31, 9TX-32, 9TX-33 RC-405, RC-405A, RC-405B. Five-Tube, Single-Band, AC-DC Superheterodyne Receivers Alignment Ptocedure Output Meter Alignment.Connect the meter across the voice coil, and turn the receiver volume control to maximum

2、. Test-Oscillator.Connect the low side of the test-oscillator to the receiver chassis, through a .01 mfd. capacitor, and keep the output as low as possible. Steps Connect the high side of test- oscillator to Tune testOsc. to- Turn radio dial to Adjust the fol lowing for max-, peak output 1 Tuning co

3、ndenser stator (osc.) in series with .01 mfd. 455 kc Quiet point at 1,600 kc end of dial Cl, C2, C3, C4 (1st and 2nd I-F transformers) 2 Antenna term, of ant. trans. in series with 100 mmfd. 1,720 kc Full clockwise (out of mesh) C5 (oscillator) 3 1,500 kc Resonance on 1,500 kc signal C6 (antenna) Pr

4、ecautionary Lead Dres$ 1. Dress 1st I-F plate and grid leads against chassis and away from each other. Dress i)late lead from 12SK7 close to chassis. 2. Dress electrolytic capacitor against rear apron. Power-Supply Polarity. For operation on d-c, the power plug must be inserted in the outlet for cor

5、rect polarity. If the set does not function, reverse the plug. On a-c, reversal of the plug may re duce hum. Antenna.The set is equipped with length of antenna wire. Do not connect the antenna to ground. If an outdoor antenna is used, it should not be longer than 100 feet, including lead-in. If it i

6、s longer, connect a 100 to 200 mmf. capacitor in series with the lead-in. Victrola Attachment.A jack is provided on the rear of chassis 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 fi

7、t the jack. 收音机爱 好者资料库 RadioFans.CN PACE 241-C Model 9TX-31 Walnut Finish, Tan Knobs MODELS 9TX-31, 9TX-32, 9TX-33 Chassis No. RC -405, RC -405A, RC -405B Five -Tube, Single -Band, AC -DC Superheterodyne Receivers Model 9TX-3 Ivory Finish, Ivory Knobs Electrical and Mechanical Specifications FREQUEN

8、CY RANGE 530-1,720 kc TUBE COMPLEMENT (1) RCA -12S7 1st-Detector-Oscillator (2) RCA-12SK7 I -F Amplifier (3) RCA-12SQ7 2nd -Detector, 1st A -F, and A.V.C. (4) RCA-35L6GT Power Output (5) RCA-35Z4GT Half -Wave Rectifier Dial Lamp (1) Mazda 47, 6.3 volts, .15 amp. POWER SUPPLY RATINGS A -C Rating 105-

9、125 volts, 50-60 cycles, 30 watts DC Rating 105-125 volts, direct current, 30 watts Model 9TX-33 Heart Walnut, Ornamental Sides Tan Knobs INTERMEDIATE FREQUENCY 455 kc POWER OUTPUT (125 volt, 60 cycle supply) Undistorted 1.5 watts Maximum 2.0 watts I,OI-PSPEAKER (39105-2) Type 4 -inch Electrodynamic

10、 Height Width Depth r 9TX-31. 5/ inches 88 inches . 41 inches Cabinet Dimensions 9TX-32. 5k inches 88 inches . 41j inches ( 9TX-33. 611 inches 93 inches . 41 inches Weight (net) 9TX-31, 32. 48 pounds; 9TX-33. 51 pounds Replacement Parts Insist on genuine factory -tested parts, which are readily iden

11、tified and may be purchased from authorized dealers. S jOoCK N. DESCRIPTION STOCK O K DESCRIPTION X-638 Cabinet for 9TX31 (Walnut Finish) (net) 33292 Plate-Dial color plate (Model 9TX33) X-639 Cabinet for 9TX32 (Ivory Finish) . (net) 33294 Pulley-Drive cord pulley (Model 9TX33) X-640 Cabinet for 9TX

12、33 (Wood-Walnut Finish). 32970 Resistor-Dial lamp resistor -24 ohms (net) 32971 Resistor-Series dropping resistor -42 ohms 12488 Capacitor -250 mmfd. 13428 Resistor -150 ohms, watt 12952 Capacitor -300 mmfd. 30538 Resistor -330 ohms, watt 4838 Capacitor-.005 mfd 13998 Resistor -22,000 ohms, 7 watt 4

13、937 Capacitor-.01 mfd 12412 Resistor -47,000 ohms, i watt 12484 Capacitor -0.25 mfd 12264 Resistor -220,000 ohms, watt 32572 Coil-Antenna coil 12285 Resistor -470,000 ohms, 4 watt 32962 Coil-Oscillator coil 12679 Resistor -2.2 meg., watt 13057 Condenser -60 mmfd. 13601 Resistor -10 meg., watt 30433

14、Condenser -400 mmfd. 32945 Shaft-Tuning knob shaft (Models 9TX31 and 4870 Condenser-.025 mfd. 9TX32) 4839 Condenser -0.1 mfd. 33293 Shaft-Tuning knob shaft and bushing (Model 32576 Condenser-Electrolytic, one section 20 mfd., 9TX33) one section 12 mfd 32969 Socket-Dial lamp socket 32968 Condenser -2

15、 -gang variable tuning 14278 Socket-Phonograph socket 32634 Cord-Drive cord., 32537 Socket-Tube socket 32942 Dial-Glass dial scale (Models 9TX31, 9TX32) 32963 Speaker-Complete with transformer 33289 Dial-Glass dial scale (Model 9TX33) 33297 Drive-Dial anve mechanism-comprising drive drum, cord, shaf

16、t, dial color plate, back plate and pulleys assembled (Model 9TX33) 32947 31615 Spring-Drive cord tension spring (Models 9TX31 and 9TX32) Spring-Drive cord tension spring (Model 32946 Drum-Variable condenser drive drum and indi- cator disc (Models 9TX31 and 9TX32) 33296 9TX33) Spring-Drive drum reta

17、ining spring (Model 33008 33295 Feet-Rubber feet for 9TX33 Indicator-Dial pointer (Model 9TX33) 32667 9TX33) Spring- drive drum retaining spring 32447 32571 Knob-Ivory knob (tuning or volume) (Model 9TX32) Knob-Tan knob (tuning or volume) (Models 9TX31 and 9TX33) 32966 32967 32964 32578 Transformer-

18、First i -f transformer Transformer-Second i -f transformer Transformer-Output transformer Volume Control and power switch (Models 9TX31 31480 Lamp-Dial lamp-Mazda 47 and 9TX32) 12409 Lead-Antenna lead 32943 Nut-Speed nut to fasten dial (Models 9TX31 and 9TX32) Additional Replacement Parts: Stock No.

19、 33139 Rubber grommet for tuning shaft 34174 Output transformer for speaker marked 39105-4 31846 Spring-Dial knob spring 33291 Volume control and switch for 9TX-SS Circuit Revisions: The following circuit modification is suggested on Model 9TX30 series receivers where repeated failure of the No. 329

20、70 line resistor and No. 31480 pilot lamp has occurred: - MATERIAL REQUIRED: Quantity Part RCA Stock No. 1 1 1 Rectifier tube 35Z5GT Resistor 33558 No. 51 Mazda pilot lamp 11765 RCA VICTOR DIVISION OF RADIO CORPORATION OF AMERICA, - CAMDEN N. J., U. S. A. 收音机爱 好者资料库 RadioFans.CN PAGE 242-C 9TX 31,-3

21、2,-33 Circuit Revisions: PROCEDURE: (1) Remove all connections from terminals No. 2 and No. 4 of terminal hoard and ter- minais No, 2, No. 5, and No. 6 of 35Z4GT socket. 121 Res -older pilot lamp lead, removed from terminal No. 4 of terminal board, and power lead removed from terminal No. 6 of recti

22、fier socket, to terminal No. 2 of rectifier socket. 3) Resulder pilot lamp lead, removed from terminal No. 6 of rectifier socket, to ter. mina) No. 3 of rectifier socket. Add jumper between No. 5 and Nu. 3 of rectifier socket. Resulder .05 ntfd. capacitor, removed from terminal No. 6 of rectifier so

23、cket, to ter- minal No. 5 of rectifier socket. t;) Replace jumper between terminal No. 7 of rectifier socket and terminal No. 2 0f 35L6GT socket, with 86 ohm resistor (Stock No. 33558). 101 Replace 35Z4GT rectifier tube with a 35Z5GT rectifier tube. ( 7) Replace No. 47 Mazda pilot lamp with a No. 51

24、 Mazda pilot lamp (Stock No. 11765). 4) ORIrh .char. !lass date Ic.ul Irmo 12SK7 close to chassis. 2. Dress electrolytic capacitor against rear apron. 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, r

25、everse the plug. On a -c; reversal of the plug may re- duce hum. Antenna.-The set is equipped with length of antenna wire. Do not connect the antenna to ground. If an outdoor antenna is used, it should not he longer than 100 feet, including lead-in. If it is longer, connect a 100 to 200 mmf. capacit

26、or in series with the lead-in. I ZSQ7 2 DET.15AF.rv.t._- 47.7 )J - 25J,00a 22QC30 4700JJA 2.2MEG. - 005 11 1 2:0,000 JACK VICTROLA Ca,2.II.F. C_3 35LGGT 1 125q-/ T4ANS 12 46 3 R.F. -. - - 1600N0 s0 c6 , is/ IF . 5 TERNS. 3524T I -IC Bj O,C. A551C L- ,;20KC/ TIIBF LfICATIONS ANC) ALIGN, IFIT SCEEW PO

27、SITONS Schematic Circuit Diagram 35l-6 1 OUTPUT 4 5V. - t INLi IC ATFS CHASSIS INVII PTFS CrOMMON WIRING SO L AT CO FROM C nAS,IS ) 4 y ;.;1 MEG - OI VICTH LA - JACK Inv. .05 lr Isst LAMr I1Ad. /N.n/,. a4- 4!w 1CHON VOL.CULJrR.)L RC -405 T-88733-0 WA/ ER FIELD 1 EO+6- 11.Jll 20te -50A e 15v awe BLUE 512 1_607115N7 353a. 12SA7 i2547 . REO BC 收音机爱 好者资料库 RadioFans.CN