RCA-Victor-Co-Inc-7X 电路原理图.pdf

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1、PAGE ii8-B MODELS7X c47 +A v+ et; G26 L7cf9 120501F150 J. PRA44 146 56,0000. 51E5 C30 CLOSED rola 16,001g. PKONO PT 220.000 C31 .015.5-0 RS 2 MEG v0t.T.?.001 Irclq C32 RIO ORO a44-17 35 C34 .0155irD 2 7 CZ. . OUTPUT TI R13 !mi. OI C39 4A, R29 29001 C04243.1C45 MOP. MFo.TMra MOO tit20 521 93 en R15 6

2、00. NTERLOCACD SAGO KM. 1170 000,65.0.0157 1f TLECTO CLTOCiTOOt 0OCK 2,5= R a 100.00 DIRL LAMPS - - 2596250661160470.176LT6.17 M1111111111 TO CYO . Schematic Circuit Diagram CONINCTIi,-1111.16166/ 3ONN5CROIR CONITILZTkOO IMPLOTO1CO INCTO11 Chassis Wiring Diagram 收音机爱 好者资料库 RadioFans.CN PAGE 20-B 7X

3、/.)6K7 I. F. 12.6V.- C. -111V.- .C.A -100 v. - - - 12.6V- 6- I12.1F CON V. , -1-.-7es-06.- r -1i 1 6L7 .,G, ,63v. -I.I .-i- 6.3V-A.C:i j 111 v.(-10 VI(-2.03V.) -0.8V.-0.3V 110, TOM FRONT OF CHASSIS .TRA NS.LS PRI. I I2Na DET. A.V.C. I6H6 31.5V- A.O. -2.6V. - L - 26V, (3 -VOLUME CONTROL Figure 5-Radi

4、otron Socket Voltages and Trimmer Locations Measured at 115 volts, 60 -cycle supply-For 115 -volt d -c supply approximately 10% lower- Tuned to approximately 1,000 kc-No signal being received-Tone control optional- Volume control maximum Note:Two voltage values are shown for some readings.The value

5、showninparentheseswith asterisk(*)indicates operating conditions without voltmeter loading. Radiotron Cathode Current Readings Measured withMilliammeter ConnectedatTube Socket Cathode Terminals Under Conditions Similar to Those of Voltage Measurements (1) RCA-6L7-Converter 7.5ma. (2) RCA-6J7-Osc. 3.

6、5ma. (3) RCA-6K7-I. F. Amp. 8.5ma. (4) RCA -6H6 -2nd Det.-A.V C- (5) RCA-6J7-Audio0.22 ma. (6) RCA-25A6-Power27.0ma. (7) RCA-25Z6-Rectifier48.0ma. Alignment Procedure With tuning condenser fully meshed set dial pointer to coincide with 530 on low frequency end of BC Band scale. STEP CONNECT HIGH SID

7、E OF TEST OSC. TO - TUNE TESTOSC TO - TURN RADIO DIAL TO ADJUST THE FOLLOWING FOR MAX. OUTPUT 1 I-F Grid in series with 0.01 mfd 480 Kele Quiet point ar 800 Kc NBC Band LIBL15 aid I-F Trans. 2 1st De t . Grid in series with 0.0 imfd L14L13 1st I-F Trans. 3 Antenna in series with 200 mmfd LiWave Trap

8、 Minimum Output 4 Antenna in series with 300 ohms 20000 Kc 20000 KC SWII Band C14t C7A Osc.Ant. 58000 KC 6000 KC ,MED* Band Ci6tC8 Osc.Ant. 6 Antenna in series. with 200 mmfd 1500 KC 1500 Kc BC Band C17C9 Osc.Ant. 7600 KC 600 Kc NBC Band LiiRock Gang 600 Kc Osc. 8Repeat Step 6 Osc. tracks 460 lc abo

9、ve signal on all bands. t Use minimum capacity peak. Usesaxisuecapacity Peak- ROCKGANG. 收音机爱 好者资料库 RadioFans.CN PAGE i2i-B REPLACEMENT PARTS 7X &7X1 Stock No. DESCRIPTION ListStock No. DESCRIPTION List RECEIVER ASSEMBLIES 11398Resistor -220,000ohms,carbontype, 12716Board -Antenna and ground terminal

10、 1/10 watt -Package of 5 (R7) board 11453Resistor -270,000ohms,carbontype, 12717 Board -Phonograph. terminal board 1/10 watt -Package of 5 (R12) 5237Bushing -Tuning condenser mounting bushing assembly -Package of 3 13005Resistor -390,000ohms,carbontype, 1/10 watt -Package of 5 (R13) 12511 Cap -Grid

11、contact cap -Package of 5 11452Resistor -470,000ohms,carbontype, 12714 Capacitor -Adjustable trimmer (C7, C9, 1/10 watt -Package of 5 (R1) 1/4 C16, C17) 11811Resistor -680,000 ohms, carbon type, 12807 Capacitor -Adjustable trimmer (C8, C14) watt -Package of 5 (RIO) 13001 Capacitor -8.2 Mmfd. (C22) 4

12、241Resistor -1.5 meg., carbon type, 1/4 watt 13002Capacitor -12 Mmfd. (C18) -Package of 5 (R11) 12948Capacitor -33 Mmfd. (C24) 12651Shield -Coil shield for Stock No. 12708. 12723 Capacitor -56 Mmfd. (C3) 12710Shield -Coil shield for Stock No. 12709 12629Capacitor -56 Mmfd. (C26) 12607Shield -1st I.

13、F. transformer shield cap 12404Capacitor -120 Mmfd. (C25, C27, C28) 12008Shield -I.F.transformer shieldfor 12724Capacitor -120 Mmfd. (C36) Stock Nos. 12801, 12653 12725Capacitor -150 Mmfd. (C1) 12581Shield -2nd I. F. transformer shield cap 12406Capacitor -180 Mmfd. (C29) 12110Shield -Top cap shield

14、for 6J7 Radiotron 13003Capacitor -180 Mmfd. (C13) 12704Shutter -Dial scale holder and shutter 12488Capacitor -270 Mmfd. (C19) assembly 12537Capacitor -560 Mmfd. (C11, C21) 11198Socket -7 -contact 6J7,6K7or6L7 12727Capacitor -555 Mmfd. (C20) Radiotron socket Capacitor -1,800 Mmfd. (C15) 11196Socket -

15、8 -contact 25A6, 2526, 6H6 or ,12947 5005Capacitor -.0035 Mfd. (C37) 6J7 Radiotron socket 11315Capacitor -.015 Mfd. (C34) 3529Socket -Dial lamp socket 4886Capacitor -.05 Mfd. (C5, C6, C39) 12007 Spring -Retaining spring for Stock Nos. 4841Capacitor -0.1 Mfd. (C12, C30, C35) 12800, 12006 and 12664 -P

16、ackage of 10 4858Capacitor -.01 Mfd. (C2, C4, C31, C33, C38, C45) 12849 Spring -Tension spring for band indi- cator shutter link -Package of 5 5170Capacitor -0.25 Mfd. (C32) 12668Tone control and power switch (R14, S3) 4840Capacitor -0.25 Mfd. (C40) 12801Transformer -First I.F.transformer 5212Capaci

17、tor -18 Mfd. (C43) complete (L13. L14, C25, C26) 12998Capacitor -Pack comprising one 24 Mfd., one 16 Mfd. and on 10 Mfd. sections (C41, C42, C44) 12653Transformer -Second I. F. transformer complete (L15, L16, C27, C28, C29, R6, R7) 12708Coil -Antenna coil and shield (L2, L3, 12654Trap -Wave trap com

18、plete (LI) L4, L5) 13144Volume control (R9) 12943Coil -Oscillator coil and shield (L6, L7, L8, L9, L10, L11, L12) REPRODUCER ASSEMBLIES 12701Condenser -2 -gang variable tuning con- denser (C10, C23) 12914Board -2 -contactreproducer terminal board 11979Connector -2 -contact male connector for power l

19、eads 12640Bracket -Output transformer mounting bracket 5119Connector -3 -contactfemaleconnector for speaker leads 12642 Cone -Reproducer cone and dust cap (L17) 12800Core -Adjustablecoreandstudfor Stock No. 12709 5118Connector -3 -contact male connector for speaker leads 12006Core -Adjustablecoreand

20、studfor 9717Reproducer complete Stock No. 12801 and No. 12653 11828Transformer -Output transformer (T1) 12664Core -Adjustablecoreandstudfor MISCELLANEOUS ASSEMBLIES Stock No. 12654 12996Dial -Station selector dial scale 11824Connector -2 -contactfemale connector 12702Drive -Vernier drivefortuningcon

21、- for power cord, Stock No. 11823 denser 11823Cord -Power cord complete 12712Indicator -Stationselectorindicator pointer 12698Crystal -Station selector escutcheon and crystal 4340Lamp -Dial lamp -Package of 5 12699Knob -Largestation selectorknob - 12718Mask -Dial light diffuser complete with Package

22、 of 5 colored screen 12992Knob -Smallvernier stationselector 12997Range switch -(S1, S2) knob -Package of 5 12999Reactor -Filter reactor (L18) 12995Knob -Tone and power switch knob - 11955Resistor -27 ohms, carbon type, 1/4 watt Package of 5 12453 13004 -Package of 5 (R21) Resistor -27 ohms, insulat

23、ed,1/4 watt - Package of 5 (R20) Resistor -2,200 ohms, carbon type,1/2 watt -Package of 5 (R22) 12994 11377 12993 Knob -Volume control or range switch knob -Package of 5 Screw -Chassis mounting screw assem- bly -Package of 4 Screw -8-32 x 4 headless set screw for knob, Stock Nos. 12992, 12993, 12994

24、 11647Resistor -5,600 ohms, carbon type, IA and 12995 -Package of 10 watt -Package of 5 (R3) 4982Spring -Retaining springforknob, 11400Resistor -27,000 ohms, carbon type, 1/4Stock No. 12699 -Package of 10. watt -Package of 5 (R3) 12679Resistor -2.2 meg., insulated, IA watt - 11282Resistor -56,000 oh

25、ms, carbon type, 1/10 Package of 5 (R5) watt -Package of 5 (R6) 13000Resistor -Ballast resistor,comprising 11281Resistor -100,000ohms,carbontype, 1/10 watt -Package of 5 (R4) one 50 -ohm and three 40 -ohm sections (R15, R16, R17, R18) 5145Resistor -100,000 ohms, carbon type,1/4 watt -Package of 5 (R2, R19) 4669Screw -8-32 set screw for Stock No. 12704 -Package of 10