RCA-Victor-Co-Inc-RC-551 电路原理图.pdf

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1、PAGE 147-C MODELS QU7 and QU8 Chassis No. RC -551 Twenty Tube; and Twenty -Four Tube, Eight -Band, AC Superheterodyne Receiver, Automatic Phonograph, Recorder, and Public Address System Electrical and Mechanical Specifications FREQUENCY RANGES Long Wave (X Band) Medium Wave (A Band) 140.410 kc (2145

2、.735 m) 540.1,720 kc (555.174 m) Short Wave (B Band) 3,1.9.5 me (97.5.31.5 m) 31 Meter Spread Band 9.45.12 me (31.8.25.4 m) 25 Meter Spread Band 11.65-15.2 me (25.6-19.9 m) 19 Meter Spread Band 15.1.17.75 me (19.9.16.9 m) 16 Meter Spread Band 17.73.18.5 me (16.916.2 m) 13 Meter Spread Band 21.45.22.

3、6 me (13.95-13.3) INTF.ItMEDIATE FREQUENCY 455 kc PILOT LAMPS 16 Type Mazda 44, 6.8 volts USED ONLY IN QU8 CABINET DIMENSIONS Height 39 inches Width 37 inches Depth 19 inches Weight Net 245 lbs. Shipping 363 lbs. Tuning Drive Ratio 25 to 1 QU7 POWER OUTPUT RATING Undistorted 30 watts Maximum 45 watt

4、s LOUDSPEAKERS (2) (2-76-B3) Type 12 in. Electrodynamic Voice Coil Impedance 11.5 ohms at 400 cycles lIIONIR;RAPII RP Type 157 Type Automatic Record Capacity. Eight 10 or Seven 12 inch Records Turntable Speed 78 r.p.m. Type Pickup Magnetic Pickup Impedance -. 96 ohms at 1,000 cycles Watts Phono Moto

5、r 60 cycle 27 50 cycle 31 25 cycle 30 POWER SUPPLY RATING 100.130, 140.160, 195.250 volts, 50-60 cycles 400 watts RECORDER Cutter Head Magnetic Impedance of Cutter at 1,000 cycles 6 ohms Turntable Speed 78 r.p.m. Grooves Cut Per Inch 96 Inches Cut Per Minute .81 Recording Blank Discs Acetate coated

6、metal base Recording Disc Diameter Up to 12 inches Drive . Lead screw driven from turntable PUBLtc ADDRESS USE Microphone Type RCA Aerodynamic MI.6226D Microphone Input Impedance 250 ohms Output to External Speakers 500 ohm line No. of External Speakers Up to 15 Power Output 45 watts max. RCA TUBE C

7、OMPLEMENT (1) (2) (3) (4) (5) (6) (7) (9) (10) (11) (12) (13) (14) (15) (16) (17) (18) 19) 20) 21) 22) (23) (24) RCA6SK7 R -F Amplifier RCA6SA7 Oscillator RCA-6SA7 1st Detector RCA-6SK7 1st IF RCA-6B8G A.V.C. I -F RCA -6U5 Tuning Indicator RCA-6B8G 2nd I -F, 2nd Detector RCA-12SK7 1st Audio RCA-6SC7

8、 Mixer RCA -6J5 Audio RCA6V6-GT Driver RCA-12SK7 Microphone Pre -Amplifier RCA -6H6 Mic, Volume Limiter RCA -6U5 Recording Indicator RCA-6F6G Power Output RCA-6F6G Power Output RCA-6F6G Power Output RCA6F6G Power Output RCAVR150.30 Voltage Regulator RCAVR105.30 Voltage Regulator RCAVR105.30 Voltage

9、Regulator RCA-5Y3G Bias Rectifier RCA-5U4G Rectifier RCA-5U4G Rectifier CABIN ET DIMENSIONS Height 42 inches Width 423/4 inchei Depth 221/2 inches Weight Net 108 lbs. Shipping 470 lbs. Tuning Drive Ratio 25 to 1 POWER OUTPUT RATING Undistorted 50 watts Maximum 60 watts Lot OSPEAKERS Type (2) (RL -76

10、-B2) (RL -76-B3) QU8 12 in. Electrodynamic Voice Coil Impedance 11.5 ohms at 400 cycles PHONOGRAPII Type 16E Type Fully Automatic Record Capacity Twenty 10 or 12 inch or twenty mixed Records Turntable Speed 78 r.p.m. Drive Motor through reduction gear box direct to turntable Type Pick -Up Magnetic P

11、ickup Impedance 96 ohms at 1,000 cycles Watts Phono Motor 60 cycle 90 50 cycle 110 POWER SUPPLY RATING 100-130, 140-160, 195-250 volts, 40-60 cycles 410 watts R ECOR DER Cutter Head Magnetic Impedance of Cutter at 1,000 cycles 6 ohms Turntable Speed 78 r.p.m. Grooves Cut Per Inch 96 Inches Cut Per M

12、inute 81 Recording Blank Discs Acetate coated metal base Recording Disc Diameter Up to 12 inches Drive Lead screw driven from turntable PUBLIC ADDRESS USE Microphone Type Velocity (Ribbon) MI.4036-K Microphone Input Impedance 250 ohms Output to External Speakers 500 ohm line No. of External Speakers

13、 Up to 30 Power Output 60 watts max. 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 1.48-C OU -7, QU-8 General Description Model QU7 is a superior -quality Radio -Phonograph Com- bination which includes: a twenty tube superheterodyne radio re

14、ceiver, an automatic phonograph mechanism, a disc re- corder, and has provision for use as a Public Address System. Features of design include: Eight Tuning Bands with five Spread Bands, Two I -F Stages, Controlled Selectivity, Sep- arate Channel AVC, Automatic Tone Control, Automatic Bass Amplifier

15、, Treble Tone Control, Bass Tone Control, Temperature Compensated Tuning Circuits, Twin 12 -inch Speakers. The Phonograph has a specially designed Magnetic Pickup, Automatic Bass Amplifier, Acoustic Adaptor Circuit, Powerful Motor, and Treble and Bass controls. The Recorder will record on up to 12 -

16、inch discs the following: Radio Pro- grams, Voice or music of an individual or group, Radio pro- grams plus another voice or special music through the Micro- phone, plus other combinations of Recorder and Microphone. When used as a P. A. System, this instrument will feed up to fifteen external speak

17、ers, and has a separate monitor speaker control to control volume of the speakers in the cabinet. The Microphone supplied for the Recorder and P. A. System is the high -quality RCA Aerodynamic Microphone. Model QU8 is a superior -quality Radio -Phonograph Corn bination which includes: a twenty-four

18、tube superheterodyne radio receiver, a fully automatic phonograph mechanism, a disc recorder, and has provision for use as a Public Address System. Features of design include: Eight Tuning Bands with five Spread Bands, Two I -F Stages, Controlled Selectivity, Separate Channel AVC, Automatic Tone Con

19、trol, Automatic Bass Amplifier, Treble Tone Control, Bass Tone Control, Temperature Compensated Tuning Circuits, Twin 12 -inch Speakers. The Phonograph will: repeat one record, play in sequence from 3 to 20 records (10 -inch, 12 -inch or mixed) on both sides automatically; and has: specially designe

20、d TURNTABLES TURNTABLE MOTOR SWITCH VOLUME CONTROL FOR INSTRUMENT SPEAKERS 24,1;:ir=ratT Vre ARO , ,. RIRSTCR CO. ROL Operating Controls Magnetic Pickup, Automatic Bass Amplifier, Acoustic Adaptor Circuit, Powerful Motor, and Treble and Bass controls. The. Recorder will record on up to 12 -inch disc

21、s the following: Radio Programs, Voice or music of an individual or group, Radio programs plus another voice or special music through the Microphone, plus other combinations of Recorder and Microphone. When used as a P. A. System, this instrument will feed up to thirty external speakers, and has a s

22、eparate monitor speaker control to control volume of the speakers in the cabinet. The Microphone supplied for the Recorder and P. A. System is the high -quality RCA Velocity (Ribbon Type) Microphone. EXTERNAL SPEAKERS SWITCH CUTTER HEAD LEAD SOCKET LAMP SWITCH REJECT BUTTON MASTER POWER SWITCH KNOB

23、CARO MAGIC EYE FOR RECORDING LEVEL MAGIC EYE FOR ./IIII RADIO ONLY MASTER CONTROL INDICATOR PANEL PLUG -I N CONNECTION RADIO AND PHONO VOLUME CONTROL _. TUNING CONTROL -TREBLE TONE CONTROL -RANGE SELECTOR BASS TONE CONTROL MASTER CONTROL MICROPHONE VOLUME CONTROL RECORDING. ARM ASSEMBLY RECORDER BEA

24、RING Operating Controls Operation The Power Switch above the Master Control Indicator controls the power for all functions of this instrument. The Master Control chooses the type of function desired: the full counter -clockwise position of this switch being the Radio position, and successively clock

25、wise the positions are: Phonograph; Radio Recording; Microphone Record- ing. Radio Recording and Microphone Recording; and Public. Address. These functions are indicated on the Master Control Indicator as the Master Control switch is turned. 收音机爱 好者资料库 RadioFans.CN PAGE 149-C QU-7, QU-8 .Ilodcl QU8

26、Radio Operation:- QU7 and also add a few drops of good quality motor oil (SAE No. 30) to the motor bear- ings. 收音机爱 好者资料库 RadioFans.CN PAGE 4SO-C QU-7, QU 8 1. Manual Operation:-Turn Power Switch ON, turn Master Control to Phonograph. See that Automatic Switch at rear of turntable is OFF. Place reco

27、rd on turn- table; turn Motor switch at front of turntable to ON; place pickup on record; control volume with Volume Con trol on radio panel. Adjust :Bass and Treble controls as desired. 2. Automatic Operation:-Turn Power Switch ON; turn Master Control to Phonograph. Load the records vertically on t

28、he Record Magazine in the order desired. IMPORTANT:-THE FIRST RECORD, WHICH IS THE FIRST TO BE PLAYED, MUST BE SECURELY PLACED ON THE RECORD SUPPORT PINS AND PUSHED FLUSH AGAINST THE UPPER AND LOWER RECORD SUPPORT SURFACES. The side to be played first should be facing outwards. The other records (up

29、 to 20) are then placed on the record support pins in the sequence desired, with the selection to be played first facing outwards. IMPORTANT:-NOT LESS THAN 3 REC ORDS SHOULD BE PLAYED AUTOMATICALLY. Set the Record Selector Lever to play One side or Both Sides, throw the Automatic Switch at rear of t

30、urntable to ON, then turn Motor switch to ON. To repeat a record set the Record Selector Lever to Repeat. To reject a record, push the Reject button at top right side of Phono Compartment. NOTE:-If Automatic Mechanism jams during a cycle, turn OFF Master Power Switch before clearing cause of jam, as

31、 the Motor switch does not remove power to phono. motor while mechanism is in cycle. If Master Power Switch is turned OFF while the automatic mechanism is in cycle, the mechanism will finish the cycle when the Master Power Switch is next turned ON. RECORD MAGAZINE RECORD REVERSE LEVER i RECORD SUPPO

32、RT PINS AUTOMATIC SWITCH PICKUP RECORD SELECTOR LEVER RECORD TRAY Record Changer-Operating Controls Recorder Operation:- Q U 7 i. e. the switch plunger is all the way up; and there should he about 1A2 -inch clearance between the top of switch, and the swivel shaft. When the Recording Arm is in the r

33、ecording position, the switch is open; i. e. the switch plunger is pushed down. Cutter Head:- Cutter !lead The cutter head used is of an improved design. There is a centering spring attached to the armature to maintain proper adjustment and to provide a limiting effect on the movement of the armatur

34、e. Automatic Cut-off switch - Used on Model 2U-a only PAGE 252-C QU-7, Q-8 U 1 5 5 IC L7 e 7x (GOO KC.) BOTTOM VIEW OF TUBE SOCKETS. ALL SWITCHES SHOWN .VIEWED FROM FRONT OF CHASSIS RANGE SWITCHES SHOWN IN X BAND POSITION . ROTATE CLOCKWISE FCR ,-B.31 2519: I6 AND 13 BANDS. O RANGE S W. aC2 3.30 MME

35、 SI - (FRONT) LE C3 i L9 C4 3-30 mime icIoLI2 _.,( C75 50.1. 3-30 MMF CATHOOE CURRENTS (U GSK7 - - - 9.5 MA. (2) GSA7 - - - 9.6 MA. (3) GSA7 - - -7 . o MA. (4) GSK7 - - - I .25 MA. (5) 688-8 - - -8. 5 MA. (W GUS - - - 1 .8 MA. (7) 658-G -9.3 MA. (8) 125K7 - - - 2.4 MA. (9) 0507 - - - 1 .0 MA. (10) 6

36、J5 - -2.2 MA, (II) 6V6GT-3 2 MA. 12) 125K7 - - - 1 .24MA. (146.U5-1.8 MA. MASTER CONTROL 9W. 2.5X (600 KC) GSK7 2.F C7 - C8 47MMF. TI MMF.56 C9 II -535 MMr. T THROUGH CONNECTION (REAR) CS12 - MME CG 220 MME 19 I 6 LIS 25 L11 75n 6x (6O0 KC.) 1 C 31 - 220 MME. 13 L16 MME 55 (FRoH7) 2 e C24 2-20 MME C

37、25 17 Hm r. 57 (FRONT) 55X C01WE3tSION 0.5A (Goo -4)55KC,) (45S KC:) C34 C 33 12 MMF T 56 NOW. U C35_ 11-535 I MMF. 6SA7 lT DET. CX L21 - C90 2-20 MME. C 3G 120 MME SIO (FRONT) L27 19 Iio. S12 (FRONT) C7131 4! C15 MMF1 MME. L26 _IIC1g6 4n C 79_1_ MMIfOtf C 17 10 7 2-12 mie MMF 0 1 I200 MIAR MIAR C21

38、 41 WAR gCIO T CII 2-12 M4 MME C22 56 MMR v =-4 9G. C 3 C20 MMr. 11-535 SII M (REAR) MF. e C 10-119 Oo C72 120 MME, .-i R3 22000 n -h/V- R10 100,000 A. RS 2200.4 l R7 S 15X (455 KC.) GSK7 IST I. F. C46 .05 MFO T_ C46 1- -11 100 MME 0.7 X (455 KC) C45 3M 2ND. TRANS.I.R 1 L31 L)4 1 E K( II(l C43. 7 M

39、. D O s C44 .L35 M oI E RID 6LK R9 2 A CA.0Si MED. C42 MED, DI I 1 20 MFD. 90V. C 57 R2 -35 V. ( 14OKC) O. 1 MFD. 33,000a -40V,(4OOKCU) _ 1 I V. ( 600 KC) 3oV, ( 1600 KC -12V.(3.I MC.) _15V.(S.SMC) ( 31 M.) _- 12v(29M.) - BV. ( 19 M.) - 9V.( 16M.) -8V. DET. * I I O V 245V. F MMF. -522 SELECTIVITY SW

40、 $MOWN IN COUNTER- CLOCKWISE POS., I.F SHARP (COUPLED TO HIGH TC.) 3RD. 1.F. 4 TRANS. 35 V 149 ys7 7 loo 14141! RIG 88,000. R19 120,00oL C581 loo MMF,T 5 C 9 .05 MFD. RIB 4700007. C C67 O.I MFD. C70 1.MFD, 5X 400 N I2SK7 IsT AUDIO 30X (400 N) G SC7 MI XEIP 6 -1 AUDIO fOX 40X (400.r) (4 00 USGxRCA R

41、DER GAIN DATA ;,/0G T CHANALYST DI7IVE2 SG MnR 1E47 R40 150007. C7I ioo MMF, C69 .035 MFD. C84 .04 MFD. R43 47,000 4 = e dira lM/v- iR49 n ip too,000 3 pCQ C85 Sf B20 MMF. 4 C10g8- R50 .04s Low T.C. r l -2 MEG. 1 CBG R53 C 105 .005 N16HT.C, 01 MFD. 854 I MFD. 500,000., 1 ISO,0O -1- 95V. R59 11 C89 -

42、15.5 .D. RG3 82,000.4 862 680,0004 1 BRN; 73 232m. 245V. V. R60 0 680,00 -61 470,000 RG4 470,000. C -Z BLUE 150 n TOTAL TEL SLOE C91 =O.MF1 D R47 R44 C74 45 1 02 15,00011. I I MEG I.05 I MEG. MFo MFD. BLUE R66 1.2 MEO. RG7 100,000=L 868 o04 18 (5FRONT) 2 4 C GI .005 MFD. IH MICROPHONE R20 2.2 MEG. R

43、22 .7. IW 1 W CGO 000 2.2 .05 -r MEG. MFD. T0F 5 ,MD. R25 56,0004 I- - R41 82,0004 i R!4 27,000 IIs .035 MFD.- R82 2.2 MEG. TLLE V1eIC1N. E RECORD PLAVER JACK. ReAll 47,0004 C100 .05 MFD. I C991 1000 T MMF, T cG6 .01 MFD. I I _ CGS _ os Mro. C76_lt Q .O25T MFD. I 1828(1854010) IPL. Cowrie 1 ME-. TrA

44、L 200,000 TAP 809 002 C107 L I O 5 MFD. -II DI R 32 LOW T.C. 50,00. I1 .05 MFD. Reo R52 I MES. I MEE. I (maneC 106 MFD. C1o9 .ol MFD. T 870 (FRONT) e e 7 (I7.a) = 87 MFD. C81 0 = MF5D. 855 3.9 MEG. R81 100,0004 865 GEn G) REY_ORCH .INO. Cob c, T4 MFR 14 ti 127.2 2200s1. +It 245v. R70 MEG 3.9 TT Ca l

45、l8 MR0 1 MFR CUTTER R72 R75 R74 R75 R76 1374 100.4 375 5004 2000 Y 59 1 .005 (REAR) -YEL MFD. it I x13F 114: -GRN (.1w. -RED 4 BL K -RED RED- YEL. BLK - BRN BLUE YEL. R36 X14F x4454 SOCKET PLUG O 14 SOCKET (REAR) ILS -RED GSV 0F.V1IMw ir XI2F FUNCTION INCMC. T0R6 S Is (PIPENT) PHONO. INPUT VOLTAGES

46、SHOULD HOLD WITHIN *20%. WITH 117 V. A.C. SUPPLY. 4 MEASURED WITH CHANALYST OR VOLTOHMYST. 523 PHONO - FIDELITY SW. UGOUSTIC ADAPTOR) W -870b4 -5 PAGE 154-C QU-7, Qu -8 I_ Np Igi ,. c.c. i3 : avaa- (+(Vh.Ne+ P 60 i:bU:eS i 1 G321 -xDr19 4 og 6t* 0321-rDv,9 - g am9- ,.Y ZO ? n 1-1 rt C g X PAGE 455-C

47、 QU-7, QU-8 ml00000) l00000 ( 0000gc:ot-a io. u h O 1 .1.1.1 WA l 1111111111111 a O tt x a 111 111 C) V z W x am 33 00 ZC J0 N pU m a Ir 1 21 UU pzO XS Q0 m ma a a 17, ba a3b+wia 71 . z x z gff m ;m z F.M., TELEVISION AND RECORD PLAYER JACK D ci OF AO BRD. I.F. TRANS. CONNECT OSC,LOGRAPII -Hr FOP I. F ALIGNMENT l26882821F 9DET 2ND. tie TRANS. 91 ne. 668/-1. F. 125E7 T AUDIO DA Fe IB e EB 2c De AVC.TRANS. 6885 AVC .F CYO SHIELD; 65K7 R. F. L20 TAPI (, OTORBOaRO TURNTABLE.- HrDZ BRACKE