RCA-Victor-Co-Inc-RC-1004E 电路原理图.pdf

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1、MANUAL OF 1946 MOST POPULAR SERVICE DIAGRAMS rcaVICT0R 55F and CV-42 Electrifier Chassis No. RC-1004E; Mfr. No. 274 Alignment Procedure Cathode Ray Alignment is the preferabte method. Connections foi the oscittograph are shown in the diagram. Output Meter Alignment.If this method is used, connect th

2、e meter across the voice coil and turn the receiver volume control to maximum. Test Oscillator.For atl alignment operations, connect the low side of the test oscillator to the receiver chassis, and keep the output as low as possible to avoid AVC action. Pre-Setting Dial.With gang condenser in full m

3、esh, the pointer should be set at the left-hand end diat calibration mark. Step Connect high side of the test oscillator to Tune test osc. to Turn radio dial to Adjnat the follow ing for maximum peak output I I-F grid in series with .01 mfd. 455 kc Quiet point C14, C15. (2nd I-F Trans.) 2 1A7GT grid

4、 in series with .01 mfd. and 750 kc C12, C13 (1st I-F Trans.) 3 Antenna terminal in series with 200 mmfd. 1,720 kc Tuning condenser rotor plates all out C17 (osc.) 4 1,300 kc 1,300 kc signal C9 (ant.) 5 455 kc Quiet point between 550 and 750 kc Adjust C22 for minimum output on strong 455 kc signal D

5、O NOT CONNECT TO dROUNO WHEN U9INO *eitCTR|F|SR 1N5GT R.F IA7GT 1ST DET & OSC IN5GT I.F. 1H5G7 2nd OET-AF. & AVC. 355QT OUTPUT 收音机爱 好者资料库 RadioFans.CN MANUAL OF 1947 MOST-OFTEN-NEEDED RADIO DIAGRAMS Radiola Model 66-1 (RC-1004E) Alignment Procedure a ryt frtnnfrf fflTlS for I Cathode Ray Alignment i

6、s the preferable method. Connections for the oscillograph are shown in the diagram. Output Meter AlignmentIf this method is used, connect the meter across the voice coil and turn the receiver volume control to maximum. Test Oscillator.For all alignment operations, connect the low side of the test os

7、cillator to the receiver chassis, and keep the output as low as possible to avoid AVC action. Pre-Setting Dial.With gang condenser in full mesh, the pointer should be set at the left-hand end dial calibration mark. czz WAVE TRAP el7-OSC. 4-55 KC. (720 KC Dial Cord Assembly Connect high side of the t

8、est oscillator to Tune test osc. to Turn radio dial to Adjust the follow ing for maximum peak output I-F grid in series with .01 mfd. Quiet point CI4. C15 (2nd I-F Trans.) 1A7GT grid in series with .01 mfd. and 750 kc C12, C13 (1st I-F Trans.) 1,720 kc Tuning condenser rotor plates ail out C17 (DSC.

9、) Antenna terminal in series with 1,300 kc 1,300 kc signal C9 (ant.) 4SS kc Qmet point between 550 and 750 kc Adjust C22 for minimum OUtpUt on strong 455 kc signal Precautionary Lead Dress. 1. The lead from the 3Q5 plate to output transformer should be dressed under clip and away from audio input le

10、ads. 2. All filament wires should be dressed close to chassis. 3. Keep AVC lead connecting Cl (0.1 mfd. filter) to antenna coil away from the 1A7GT plate. 4. Keep blue plate leads coming from I.F. transformers short and close to chassis. 5. Keep yellow leads connected to oscillator coil away from tr

11、ap coil. 6. Keep grid lead of 1N5GT RF tube away from 1A7GT grid. 7. Keep green lead from second I.F. transformer short and close to ground. ANT TO RIO I-3K- (OO KC) DO NOT CONNECT TO ROUND WHEN USING electrifier CONV. GAIN J I -4-4 .AX -4-130 X- (Goo-ASS KC) * (A55KC) * 4S5KC) MEASURED WITH 1.5 VOL

12、T FlXEP BIAS - IA7GT IN5GT IST.OET&OSC. I. F. IHSGT ZHD OET -AF ft AVC. ATPITOX. GAIN 3Q5GT CMTA MEASURED OUTPUT WrrM RCA RideR APPROX. MAX. AVC. 收音机爱 好者资料库 RadioFans.CN MANUAL OF 1948 MOST-OFTEN-NEEDED RADIO DIAGRAMS rcaVictor 65F and cv42 Elettrl,ler y IV/l vn Chassis No. (RC-1004E) (RS-1000) Cath

13、ode Ray Alignment is the preferable method. Connections for the ,T D|c _- oscillograph are shown in the diagram. 4ll kc. 17(0 kc. Output Meter Alignment.If this method is used, connect the meter j across the voice coil and turn the receiver volume control to maximum. 1 *-1 , - yps=r A Test Oscillato

14、r.For all alignment operations, connect the low side of I cu 1 the test oscillator to the receiver chassis, and keep the output as low as j _ r J possible to avoid AVC action. . c w ) Pre-Setting Dial.With gang condenser in full mesh, the pointer should j / be set at the left-hand end dial calibrati

15、on mark. Top-VtCW 0 I1 Vc,-ant C2t 5KT SSMF - Top-View Connect high side of the teat oscillator to I-F grid in series with Antenna terminal in series with 200 mmfd. Tune test osc. to Turn radio dial to Adjust the follow ing for maximum peak output Cl4, C15 and 750 kc 02, C13 (lat I-F Trans.) 1,720 k

16、c Tuning condenser rotor plates all out C17 (osc.) 1,300 kc 1,300 kc signal C9 (ut.) 455 kc Quiet point between 550 and 750 kc Adjust C22 for minimum output on strong 455 kc signal (SV5)(&Q 19 BOTTOM V OF TU SOCKETft C40-|QM (USED ON SOME TT 1 :wt? . ,Vs tee 5.75 t * -3.2v. APPROX. MAX. AVC. *-*v. f

17、eooicc) - -lav.risooKc) rfe,p Ik *SV. I SrtxEO + WAS F01 GAIN D*W- VERTlCAL Vi To THIS POINT, VERTICAL* TO CHASSIS. CIS to 1= sl*- two. BATTERY CABLE PLUG (PRONG VIFW-) HOTt: FOR BATTERY OPERATION TAPE LUG. FOR ELECTRlFlCR OPERATION, CONNECT LUG TO CHASSIS. -74V SATTeay SAVC* roair-lOH -5.2V. MAA. O

18、UTPUT POSITION BATTERY ELECTRIC SW. VIEWE0 FROM FRONT (MAX. CCW-) ANO SHOWN IN POS.NO. 1 POSITION I- BAVTSRV SAVCQ POSITION *- MAX. OUTPUT-SATT1RV POSITION 3- AC-DC OPERATION VOLTAGES SHOULD HOLD WITHIN *:20*/. WITH RATfO SUPPLY VOLTAGE U MEASURED WITH CHANALVST OR VOCrOMMYST. 收音机爱 好者资料库 RadioFans.CN