RCA-Victor-Co-Inc-97X 电路原理图.pdf

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1、PAGE 638-C MODEL 97X Seven -Tube, Electric -Tuning, Single -Ba d, AC -DC Superheterodyne Receiver Refer to Model 95T5 for Alignment Data nd Changes in Chassis marked MOD or M. 9 7 X 25 -Cycle Operation. -For operation with 25 -cycle power supply, connect a 16 mfd., 150 -volt dry electrolytic capacit

2、or (Stock No. 31323) in parallel to C16. Power Supply Polarity. -On d -c operation, the power plug must be inserted in the outlet for correct polarity. If the set does not function, reverse the position of the plug. On a -c operation, a similar reversal of the plug may reduce hum. Electrical Specifi

3、cations Frequency Range 540.1,720 kc One Station between approximately 550.980 kc (Button No. 1 -left) Two Stations between approximately 650-1,080 kc (Buttons 2 and 3) Two Stations between approximately 850-1,500 kc (Buttons 4 and 5) R -F Alignment Frequency 1,500 kc (osc., ant.) Intermediate Frequ

4、ency 455 kc RCA TUBE COMPLEMENT (1) RCA -6A8 -G First Detector -Oscillator (2) RCA -6K7 I -F Amplifier (3) RCA -6H6 Second Det., and A.V.C. (4) RCA -6F5 Audio Voltage Amplifier (5) RCA -25L6 -G Power Output (6) RCA -25Z6 -G Half -Wave Rectifier (7) BK -42B Ballast Pilot Lamp (1) I.OUDSPEAKER (ELECTR

5、ODYNAMIC) Diameter (inches) POWER OUTPUT Undistorted 1.0 watts Maximum 1.5 watts POVER SUPPLY RATING A -C Rating 105-125 volts, 50-60 cycles, 55 watts D -C Rating . 105.125 volts, 55 watts Mazda 47, 6.3 volts, .15 amp. V. C. Impedance at 400 cycles 3.0 ohms REPLACEMENT PARTS Insist on genuine factor

6、y -tested parts, which are readily identified and may be purchased from authorized dealers. STOCK DESCRIPTION STIOoCK DESCRIPTION Ballast -Ballast resistor tube type BK42-B 13045 Resistor -18,000 ohms, watt (R12) (R17, R18) 12738 Resistor -27,000 ohms, I. watt (R10) 14338 Bushing -Variable tuning co

7、ndenser mounting 12286 Resistor -56,000 ohms, watt (R2) bushing and hardware 12199 Resistor -270,000 ohms, watt (R7, R20). 31416 Capacitor -Antenna coil trimmer capacitor bank 12285 Resistor -470,000 ohms, watt (R16) (C20, C21, C22, C23, C24) 12679 Resistor -2.2 megohm, watt (R4) 12723 Capacitor -56

8、 mmfd. (C4) 13601 Resistor -10 megohm, watt (R6) 30904 Capacitor -100 mmfd. (C7, C8, C9, C10). 14887 Retainer -Indicator drive cord pulley retainer. 13003 Capacitor -180 mmfd. (C12) 31482 Screw -No. 8 square head set screw for drum 12488 Capacitor -270 mmfd. (C32) Stock No. 31421 31435 Capacitor -75

9、0 mmfd. (C25) 31365 Socket -Dial lamp socket 4838 Capacitor -.005 mfd. (C28) 31251 Socket -Tube socket 4870 Capacitor -.025 mfd. (C15) 31418 Spring -Indicator drive cord tension spring. 14393 Capacitor -.01 mfd. (C13, C14, C33) 31414 Switch -Selector switch (S12, S13, S14, S15, 4886 Capacitor -.05 m

10、fd. (C37) S16, S17, S20, S21, S22, 523, S24, S25). 30882 Capacitor -.05 mfd. (C11) 30957 Transformer -1st i.f. transformer (L5, L6, C7, 4839 Capacitor -0.1 mfd. (C1, C31, C35) C8) 12484 Capacitor -0.25 mfd. (C36) 30903 Transformer -2nd i.f. transformer (L7, L8, C9, 31479 Capacitor -Comprising two se

11、ctions of 16 mfd. C10) each (C16, C17) 31484 Transformer -Output transformer (T2) 30894 Coil -Antenna coil (L1, L2) 31483 Tube -Ballast resistor tube type BK42-B 31098 Coil -Oscillator coil (L3, L4) (R17, R18) 31383 Coil -Push button oscillator coil (L15, L16) 31384 Coil -Push button oscillator coil

12、 (L13, L14) SPEAKER ASSEMBLIES (Speaker No. 84326-3) 31416 Coil -Push button oscillator coil (L12) 31422 Condenser -2 -gang variable tuning condenser 31486 Cone -Speaker cone and voice coil (L9) (C2, C3, C5, C6, C28) 31485 Speaker -Speaker complete 31413 Control -Volume control, tone control and on

13、-off switch (R5, R14, S1) MISCELLANEOUS ASSEMBLIES 31481 Cord -Drive cord -36 -in. long silk cord 30905 Core -Adjustable core assembly for i.f. 31428 Button -Station selector push button transformer 31487 Clip -Spring clip and washers to hold dial scale 31386 Core -Adjustable core and stud for oscil

14、lator coils 31429 Dial -Station selector dial scale 31421 Dnn-Indicator drive drum and hub 31095 Disc -10 protector discs for call letter markers 31420 Indicator -Station selector indicator pointer 31355 Khob-Station selector knob 31480 Lamp -Dial lamp 30773 Knob -Tone control or dummy knob 31419 Pl

15、ate -Colored dial plate comprising plate, spacers 31391 Knob -Volume control knob and screws 30991 Marker -Station call letter push button markers 31373 Pulley -Indicator drive cord pulley 31488 Mounting -Chassis mounting screw and washer 31483 Resistor -Ballast resistor tube type BK42-B 14270 Sprin

16、g -Retaining spring for knob Stock No. (R17, R18) 30773 and 31355 14525 Resistor -22 ohms, watt (R19) 30330 Spring -Retaining spring for knob Stock No. 30880 Resistor -150 ohms, ; watt (R9) 31391 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

17、 639-C 97X C2 BLUE 2224 C231 E24 TT T 70,110 . 2 SIC T 513 5147 S15 SIL r Bu J Avi ES PULLEY T 51t $ i; .w.=r1 BALLAST RESISTOR DV 42B - 1uB BLACK 4,A9 - I., VET ! 05C. 2526-6 RECT. 6K7 4.1.16 I. F. JT1(SA SRN 2 DET AVE. E107 7 0SCcj% OF TUBE o ar 01 PLATE 31419 vI -.OPAL INDICRTCIR SPRING 3I420 3HI

18、19 NIC Dime -DR D CORD S0B ;.l WITH CANE, RT loroum UMI RN OKC 1500KC DRUM IN POSITION SHOWN RLIGNMENT-MRRICS WIWTiEi THI3LTO COINCIDE 6F5 ,AUD10 Schematic Circuit Diagram DRUM SHOWN WITH CRNC RT MAXIMUM CAPACITY Dial -Indicator and Drive Alechanism Refer to Alignment Procedure for explanation of th

19、e calibration marks shown in this drawing BROWN CT 1500 N.0 YELLOW 1V G2 6H6 2D OCT. A.V.G. ANT. OSG z C6 / 1500N.0 255 I.F TRANS. RIO QL L C2 LT PRI ADJ. Z 455. C. BLOC 1 If TRANS. L5 PRI ADJ 6A8 -G 455 N t IBC DET. 4 OSC. 25L6 -G OUTPUT aeo BLACKc / L5 T-70968 VOLTAGE MEASUREMENTS MADE TO THIS POI

20、NT Tees HOOL a CsASSIS CATHULE CURRENTS I 245-G 5.2M :. 2 61sT 4CM 3 SNE. . .-. 4 615 09M r. 5 OSLO -C 42m c. TOTAL RECTIFIED -8. CURRENT 5251 1 POWER -TONE -VOLUME 411411100 CONTROL C28-OSC. 1500 HC 2 3 4 5 TLNING CONTROL Location of Controls The right-hand push button is for dial tuning 2D DET. &

21、A.V_C. ANT. COIL C33 . ST DET. fS OSC. AUDIO TRANS) 1F. I RECT. 15T I.F. TRANS OUTPUT 2516G BK42B 25Z6G L6 / L8 SEC. ADJ. SEC. ADJ. 45514C 4S5KC 850-I500KC 55-980 KC -TRIMMERS ANT. q t) O l( JJ eOSC. GORES ( Q 680-1080KC ON -ESE 7X) Tube and Trimmer Locations Precautionary Lead Dress. - 1. Dress gre

22、en lead from antenna coil to switch away from the chassis and gang. 2. Dress green leads from trimmer bank away from the oscillatorcore adjustment screws. 3. Dress heater lead from 6H6 to 6A8 -G away from the 2nd I.F. transformer. 4. Dress black lead from electrolytic to volume control against front apron. 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN