RCA-Victor-Co-Inc-RADIOLA-66 电路原理图.pdf

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1、PAGE 1 87- A POWER A. F. RADIOLA 66 Eight -Tube, A -C, Superheterodyne Receiver (105-125 Volts -50-60 Cycle A. C.-110 Watts) Radiola 66 is also made in models designed for alternating current operation of 105 to 125 volts, 25 to 40 cycle:,In this model the power transformer is different from that us

2、ed in the 50-60 cycle models.All other parts are identical in both models 2.50(PWR.) TO LOUDSPEAKER 3 IF15 I. F. FROM ANTENNA I TUNED le DET. TUNED R. F. RADIO FREQUENCY CURRENT - - OSCILLATOR CURRENT R. F. CURRENT IN INTERMEDIATE STAGES A. F CURRENT -Radiotron sequence Alignment Procedure A dummy t

3、ype 27 tubeis needed; that is one with an open filament but otherwise normal. STEP CONNECT HIGH SIDE OF TEST OSC. TO - TUNE TEST OSC TO - TURN RADIO DIAL TO ADJUST THE FOLLOWING OUT - PUT 1 1st Det.Grid in series with .01 mfd 175 kc Quiet Point 3rd I -F Tun- ing Cond. 2nd I -F Tun - ing Cond. 1stI -

4、F Tun- ing Cond. Max. Max. Max. 2 Remove 1st I -F tube - replace with dummy tube. 3175 kc Quiet Point 1stI -F Neut. Cond. Min. 4 Remove dummy tube - replace with 1st I -F tube. Remove 2nd I -F - replace with dummy tube. 5175 kc Quiet Point 2nd I -F Neut. Cond. Min. 8 Remove dummy tube - replace with

5、 2nd I -F tube 7Repeat Step 1 8 Antenna In Series With 200 mmfd 1400 kc About 15 (1400 on Rad 67) 1400 kc Osc. Trimmer (Rock Gang) Max. 9600 kc About 80 (600 on Rad 67) 600 kc Osc. Trimmer (Rock Gang) Max. 10Repeat Step 8 11 Connect Radio to Antenna and Ground Set volume control at max. and sensitiv

6、ity control near min. Adjust R -F Comp. Cond. for max. output withoutoscillation or distortion at any dial setting. RADIOLA 66 INPUT TRANSFORMER (1:60 RATIO APPROX.) LEXAL.DISTmT poTTCH DIAL SCREEN STATION SELECTOR OPERATING SWITCH VOLUME CONTROL LOW IMPEDANCE PHONOGRAPH PICKUP VOLUME CONTROL SINGLE

7、 POLE .- C POTENTIOMETER DOUBLE THROW 1 Kr-41.01NMAPP.4) 6011 SWITCH32.00011 Schematic circuit diagram of phonograph pick-up corm0.05 MFD 0.5 M,4FD 01;T PRIMARY=1,EfONDARY P LACK (TO GROUND) YELLOW BLUE GREEN Internal connections of audio transformer and by-pass condensers RCA VICTOR DIVISION OF RAD

8、IO CORPORATION OF AMERICA, CAMDEN N. J., U. S. A. 收音机爱 好者资料库 RadioFans.CN PAGE 188-A 66 LOCAL -DISTANT , SWITCH UY 227 TUNED R F Ot R F COMPENSATING CONDENSER. - GROUND LEAD AND ALL OTHER GROUND CONNECTIONS ARE CONNECTED. TO FRAME 0.5 UY 227 lE DET MID - 0.0008 MFD i= O C=0 PILOT LAMP UY.227 1EI. F

9、0.5 MFD. VOLUME CONTROL 55011 9011 UY227 2E I. F 37511 LINK AND CONNECTIONS FOR PHONOGRAPH PICK UP ;LINK OPEN FOR PICK UP USE, Internal connec- tions of output choke, output condenser and filter condensers -Schematic circuit diagram of Radiola 66 N22 I. F. NEUTRALIZING CONDENSER Ne 1I.F. NEUTRALIZIN

10、G CONDENSER - , -11n0r. - N2 3F.N22 I.F. GANG CONDENSERNE 1I.F. TUNING CONDENSERTUNING CONDENSER ADJUSTING PUSTUNING CONDENSER -Condenser adjusting screws for I.F. transformers VOLTAGE READINGS AT TERMINAL STRIP Use D.C. voltmeter with a 0-300 volt scale and at least 1,000 ohms per scale volt such u

11、 incorporated in Weston Model 537, Type 2, test set.Line volts -120 A.C.-Tap at 120 volt connection. TerminalsVoltsTerminals Volts 8 to 73108 to 5275 8 to 62658 to 4120 Use a 0-5 volt A.C. voltmeter for the foll6ting reading:Terminal 2 to 3, 2.7 volts A.C. 收音机爱 好者资料库 RadioFans.CN PAGE 189-A 66 UY 22

12、7 2. (PWR.) DET NUMBER 40,000.11.00016UX- 245 MFD.R. A. F oouu CD11r 6Tk, 0.00240.06 MID.-MFD 0.5 MID. r 1= FIELD 0 COIL a SIoS C=0 C:0 P2 RED (D 2 OUTPUT TRANSFORMER CONE COIL GREEN OUTPUT MAROON BLUE 2.5 V A.G. BLUE BLACK +90 V RED +240 V BROWN + 220 V BLACK + L 5 F -YELLOW BLACK -L. S. F GREEN OU

13、TPUT BLUE BLUE MAROON RED YELLOW BROWN GREEN 0.5 MFD BLUE.-J TERMINAL BOARD including receiver assembly, socket power unit, and reproducer- assembly PERFORATEDCELLULOIDPILOTA. F. TNSFORMER AND DIALDIAL SCREENLAMPASSEMBLYBY-PASS CONDENSERS STATION SELECTOR DRIVE ANTENNA AND GROUND LEADS GANG CONDENSE

14、R SERIALR.F. COMPENSATING SERIES OSCILLATORPARALLEL OSCILLATORPHONOGRAPH PICK - UP CONDENSER TRIMMING COND. (600 K. C.)TRIMMING COND. (1400 K. C)TERMINAL STRIP Top view of receiver chassis showing principal parts POWER TRANSFORMER 105.125 VOLTS 50 60, A. C. OPERATING SWITCH 收音机爱 好者资料库 RadioFans.CN P

15、AGE 1.90-A 66 /7 RE 3 I.F TRANSF dmisiltACK BLACKSLUR CONNECTIONS OF I -F TRANSFORMERS. REPRODUCER UNIT TO FIELD COIL A.C.INPUT PLUG STATION SELECTOR LOCAL - DISTANT SWITCH .1- ?-.1 1 iil g 4, ANTENNAGROUND BLACK BLACK, OUTPUT CHOKE. HUTPUTOUMER AND ,MERONDENSERS POWER TRANSFORMER. N t II. F Towniol

16、imuk ,k. -A -OUTPUT TRANSFORMER DEN SLOW TO CONE COIL FILTER REACTORS UX-280 SOCKET 4 SI SOCKET POWER UNIT MAIN GANG TUNING CONDENSER ASSEMBLY AND DRIVE. SPLICES OPERATING SWITCH VOLUME CONTROL F DANSFORNER AND BY-PASS ()HOMERS 07 -CUSHION MOUNTING W -mar C I A PHONOGRAPH PICK-UP RECEIVER ASSEMBLY TERMINAL STRIP -Radiola66cable connections, socket contacts, reproducer unit, socket power unit and receiver assembly