RCA-Victor-Co-Inc-R-94 电路原理图.pdf

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1、MODELSR-93, R -93-A, R-93-2, R -93-S,anPCIGER3-8,94. RECORD PLAYERS -1r MODEL R-93 Elie. ALEUT 5CMENIAT,C C,C6,1 tt- if(IV 3 Figure 3-firing Diagram and Equivalent Schematic Circuit Models R -93-A(lot and 2nd prod.) and R-94 Deluxe (1st prod.) MODELS R-93, R -93-A, and R-94 - VOLD= AM FIDELITY INCRE

2、ASE The pickup unit of these Duo JunioriIIt11.101.141is designed to be adaptable to great variety of receiver inputs, and to provide the best average of output and fidelity that may be obtained over such a wide range of application.On soma installations, where the ultimate in output and fidelity is

3、desired, it is possible to gain oonsiderable improve- ment in performance by installation of a Stock f9652 transformer between the Radio-Fhoup ohangeover switch and the Duo output.This transformer gives a decided stepop in voltage. and enable. the Duo volume control to be operated at a lower point s

4、o that the full benefit is derived from the tone compensation.The t9632 transformer should be connected as shown in the diagram above, and its placement shouldbesuch that it is not in an interfering magnetic field frog a power transformer, reactor, wiring or motor. All other *connections are to be m

5、ade per standard instructions. Shielding should be placed over the primary and seoondary leads if such is found neeessary.It the bias of the receiver audio input stage is affected by the transformararinding, a .06 dd. in series with the blue lead will correct the conditionsThe .green and red leads o

6、f the transformer should be taped up separately and not used. =CUBICAL VIBRATION AND HUN - *Idols R -93-A Hun produced by the drive motor of the R -93-A may occasion- ally be amplified by mechanics remonanoe of the table or radio cabinet used for supporting the instrument. Ware this condition camas

7、interferon. to proper reproduction, the motor should be carefully lubricated and adjusted in acoordanoe with Service Note instructions.A felt or sponge -rubber pad beneath the instrument will also effeotively reduce the hum.Whenever the hum is of abnormal intensity due to the combination or aecumula

8、tion of causes, such as high lime voltage, resonant support, excessive amplifier gain, and unueual low -frequency responeef the addition of a 500 -ohm, 5-eatt resistor in series with themotorcoils is recommended for the 106-125 volt, 60cyclemotors.A 600-ohn, 5 -matt resistor in series with the motor

9、 oils is recommended for the106-125volt.2.5cycle motors. MODEL R-93 (Third Production) (Walnut, Red, White, Black) The Model R93 (third production) in colors of Walnut, Red, White, or Black are similar electrically to the original R-93(first and second production) but may be identified mechanically

10、by the curved tone arm.The original Model R-93 had a straight tone arm MODEL R -93-A (First and Second Production) (Walnut) The cabinet of the Model R -93-A is similar to that of the Model R-93 Walnutfinish.Thismodel incorporates an acoustic compensated volume control, seefigure3. Model R93A (first

11、production) and Model R -93-A (second pro- duction) differ only in the pickup construction, the essential difference being in the armature centerini, spring and spring clamps. The motor differs slightly in construction and mounting details from that used in the Model 1293(second produc- tion ). MODE

12、L R-93-2 DE LUXE (Walnut) Model R93.2 Deluxe isfinished in walnut and iselec- crically identicalto Model R-93 (third production), how ever, the cabinet is larger in size and has a hinged lid which may be closed while playing the records.The turntableis 10 inches indiameter.The motor differs slightly

13、 in con- struction from that used in the Model R-93 (second produc- tion). MODEL R -93-S (Walnut) Model R9 3-S has a spring wound motor and is primarily intended foruse withbatteryreceivers. The pickup and tonearm are identicaltothose described inModel R-93 (third production). MODEL R-94 DE LUXE (Wa

14、lnut) The Model R-94 Deluxe cabinet is finished in walnut and has a hinged lid which may be closed while playing the records. Note 1.(Applies to Model R -93-S only).Itis necessary to short the0.1mfd. blocking capacitor Clin Model R -93-S(see figure 6)for casesin which the control grid dc bias, or ca

15、thode current flow, would he removed or prevented by this capacitor when the record player switch is thrown to Phono position.Cl isprovided to permit operation on battery receivers without short- ing bias batteries. etc. 2.(RecordPlayerSwitchJumpers) - Some record player switches do not have jumpers

16、 JI and J2 (see figure 3) attached. When the switch is so connected and turned to phonograph position, the voltage developed by the pickup is fed into the radio receiver through the green wire and shield, and at the same time the yellow wire is connected to shield. The jumpers J1 and J2 permit the y

17、ellow lead to kill radio by connection toshield. The jumpers should be removed where the yellow lead connects in such a position as to short bias batteries, etc. 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 386-B R93, R93A, R93-2, R93S BALL

18、 BEARING TURNTABLE SHAFT AND BEARING C WASHER RUBBER SPACERS DAMPER ASSEMBLY -J STATOR t .00,5 AIR GAP STEEL ASHER LEATHER WASHER 1.rl CHECK FOR CLEARANCE BETWEEN ROTOR AND MOTOR BOARD OIL TURNTABLE SHAFT IFMOTOR BECOMES NOISY RUBBER SLEEVE TO REMOVE TURNTABLE ASSEMBLY- LOOSEN NUT, PUSH STOP UP OUT

19、OF SLOT AND ROTATE .50 - CORRECT POSITION OF TURNTABLE STOP WHEN ASSEMBLED. TURNTABLE n MOTOR BOARD 15N -54o I N.,1 1 ROTOR TURNTABLE STOP REMOVE BURRS FROM POLES OF STATOR MID ROTOR WITH FINE EMERY CLOTH IF HUM IS PRODUCED BY SAME. 0 RUBBER SPACER RUBBER SPACER WASHER SPACERS WASHER MOTOR SUPPORT S

20、CREW MODEL R 93Details of Motor (Second Production) PICK -IIP LI 40011. VOLUME CONTROL CI E0000s. RI OUTPUT SPRING MOTOR SPEED ADJUSTMENT (SCREW) TO DECREASE SPEED TURN CLOCKWISE 0 SHIELD RED BLUE SI YELLOW GREEN LE 1,81350-. -Schematic Circuit Diagram Model R -03-S (1st prod.) RUBBE SPEED ADJUSTMEN

21、T LOCK NUT TURN SPEED ADJUSTER .50 THE FEL WILL PROTRUDE 06WHEN ALL THE WAY IN. ADJUST GOVERNOR SO AS TO LEAVE )16 BETWEEN FELT AND DISC, THEN SECURE BY MEANS OF GOVERNOR SCREW. ADJUST SO THAT SHAFT IS FREE TO ROTATE WITHOUT ENO PLAYS REMOVE TO TAKE OFF GOVERNOR -4:;triP 41, OIL KEEP FILLED WITH / L

22、IGHT OIL TO INSURE SMOOTH OPERATION .11111111 DO NOT CHANGE THIS ADJUSTMENT P-1-8147+ -Details of Motor Model R-04 Deluxe (1st prod.) 收音机爱 好者资料库 RadioFans.CN PAGE 388-B R93, R93A, R93-2, R93S . c 2 ! 1. :. 8 c 1,1 .3 ,:. ! . . c; E 5= .C.Z ; S E. c .f: c .3 ; 7 : . 4 77: e . A g i 1.1 t -c : t IT. .

23、2. 0- AV 1 .% A. i -, 5 z o v -.;. .1 DImenalons Inehem e: 7.0 gl . C i?Ft Weights .c .-t .0 . :; A ., P, I. 105-605200Synchronous R-93WalnutThirdCurved (Manual 781,40020.00051187810 505200125 Starting) 105-605200 125 105-505200 Red 125 - Synchronous R-93WhiteThirdCurved(Manual 781,40020,00051187810

24、 105-255660 Black Starting) 125 200-5051,040 250 105-605200 125 R-93WalnutSecondStraight5 200 Synchronous (Manual781,40020,00051187810 110255- Starting) 105-255660 125 105-605218 125 105-505218 125Synchronous R-93Walnut FirstStraight (Manual781,40020,0005118784 10 105-255960 125 Starting) 200-5051,2

25、70 250 105-605160 125 R -93-AWalnut First andCurved 105- 125 505160 Synchronous 781,400 40,000 Tapped(Manual for51iii971012 105-255 420 Second Starting)Compen- 125 sation 200-50 5700 250 105-605200 125 105-505200 R-93-2 WalnutFirstCurved 125Synchronous (Manual781,40020,0005137/16134101418 105- 125 2

26、55 660 Deluxe Starting) 200-5051,040 250 78 R -93-SWalnutFirstCurved- Spring Wound Adjust- able 1,40020,000512)io101191013 105-6025100 R-94 WalnutFirst Curved 125 Governor Induction 78 Adjust-1,400 40,000 Tapped for741513491418 105-50-2570 Deluxe 12560(Self- ableCompen- 200-50-25230 Starting) sation

27、 25060 PAGE 3 8 9-B R93, R93A, R93-2, R93S & R94 REPLACEMENT PARTS Insist on genuine factory tested parts, which are readily identified and may be purchased from authorized dealers STOCK No. DESCRIPTION STOCK No. DESCRIPTION 10194 7657 9523 9519 MOTOR ASSEMBLIES R 93 FIRST PRODUCTION Ball-Steel ball

28、 bearirig-PaCkage of 20 Base-Motor base and bearing assembly - 50.60 cycle -105.125/200-250 volt op- eration Base-Motor base and bearing assembly - 25cycle operation Coil-Statorassembly-Comprisingcoil 10194 11740 11733 11734 11748 11873 MOTOR ASSEMBLIES Model R-93 (third production) Walnut Ball-Stee

29、l ball bearing Base-Motor base and bearing assembly Coil-Stator assembly-comprising coil and laminations - 105 -125 volt, 80 cycle operation Coil-Stator assembly-comprising coil and laminations - 105 -125 volt, 50 cycle operation Damper-Motor damper assembly-comprising one dam- per, one damper plate

30、, one screw, two rubber washers, and one C washer Motor -105-125 volts -60 cycle motor( M1) and laminations -105.125 volt, 60 cycle 11874Motor -105-125 volts -50 cycle motor( M1) operation 4456Motor Accessories-comprising three nuts, one shield and 9521Coil-Statorassembly-Comprisingcoil and laminati

31、ons -105.125 volt, 50 cycle 11876 one screw Turntable - Turntableassemblycomplete - with rotor laminations-60 cycle operation Turntable - Turntableassemblycomplete - withrotoroperation11875 9524Coil-Statorassembly-Comprising coil laminations -50 -cycle operation and laminations -105.125 volt, 25 cyc

32、le operation 4083 4084 Washer-Leather washer Washer-Metal washer 9529Coil-Statorcoilassembly-Comprising coil and laminations-SO cycle, 200.250 voltoperation MOTOR ASSEMBLIES Model R-93 (third production) Red -White -Black 9515 9516 Motor -105,125 volts -60 cycle motor Motor -105.125 volts -50 cycle

33、motor 10194 11740 Ball-Steel ball bearing Base-Motor base and bearing assembly 9517Motor -105.125 volts -25 cycle motor. . 11733Coil-Stator assembly-comprising coil and lamination - 9528 4456 Motor -200.250 volts -50 cycle motor Motor accessories-Comprising3nuts,1 11734 110 volts, 60 cycle Coil-Stat

34、or assembly-comprising coil and lamination - 110 -volts, 50 cycle shield and1screw 11735Coil-Stator assembly-comprising coil and lamination - 3813Motor suspensionassembly-Comprising onescrew,onemetalbushing,two 13081 110 volts, 25 cycle Coil-Stator assembly-comprising coil and lamination - 220 volts

35、, 50 cycle 4457 rubber bushings, one flat washer, one lockwasher and one nut-Package of 3 Spring, screw and washer assembly-Used tomount rotorlaminationstoturn- 11748 9721 Damper-Motor damper assembly-comprising one dam- per, one damper plate, one screw, two rubber washers and one C washer Motor -11

36、0 volts,60 cycle motor with red turntable (M1) table-Comprising3springs,3screws and 9 washers 9725 9729 Motor -110 volts, 60 cycle motor with white turntable (M1) Motor -110 volts, 60 cycle motor with black turntable 9520Turntable-Turntable assembly complete ( M1) 9525 withrotorlaminations 9722 9726

37、 Motor -110 volts,50cycle motor with red turntable (M1) Motor -110 volts, 60 cycle motor with white turntable (M1) -60 cycleop- peration Turntable-Turntable assembly complete withrotorlaminations -25 cycleop- 9730Motor -110 volts, 50 cycle motor with black turntable peration 9723 (M1) Motor -110 vol

38、ts,25cycle motor with redturntable 9522Turntable-Turntable assembly complete withrotorlaminations -105.125/200- 9727 ( M1) Motor -110 volts, 25 cycle motor with white turntable (M1) 250 volt -50 cycle operation. 9731Motor -110 volts, 25 cycle motor with black turntable 4083Washer-Leather washer-Pack

39、age of 10. (M1) 4084Washer-Metal .washer-Package of 10 9724Motor -220 volts,60cycle motor withredturntable ( M1) MOTOR ASSEMBLIES 9728Motor -220 volts, 50 cycle motor with white turntable R 93 SECOND PRODUCTION 9732 (M1) Motor -220 volts, 50 cycle motor with black turntable 10194 11740 Ball-Steel ba

40、ll bearing-Package of 20 Base-Motor base and bearing assembly 13072 (M1) Turntable-Redlamina-turntable-complete with rotor tion -60 cycle operation Turntable-Whitelamina-11733Coil-Statorassembly-Comprisingcoil and laminations -105.125 volt, 60 cycle operation 13075 13078 turntable-complete with roto

41、r tion -60 cycle operation Turntable-Blacklamina-turntable-complete with rotor tion -60 cycle operation Turntable-Redlamina- 11734Coil -Statorassembly-Comprisingcoil and laminations -105.125 volt, 50 cycle 13073turntable-complete with rotor tion -50 cycle operation Turntable-White 11748 operation Da

42、mper-Motor damper assembly-Com- prising one damper, one damper plate, one screw, two rubber washers, and one C washer 13076 13079 13074 13077 turntable-complete with rotor lamina- tion -50 cycle operation Turntable-Blackturntableassembly - completewith rotor lamination -50 cycle operation Turntable-

43、Redturntable assembly-complete with rotor lamination -25 cycle operation Turntable-Whiteturntableassembly - completewith rotor lamination -25 cycle operation11873Motor -105.125 volts -60 cycle motor 11874 4456 Motor -105.125 volts -50 cycle motor Motor accessories-Comprising 3nuts,1 13080 4083 Turnt

44、able-Blackturntableassembly - completewith rotor lamination -25 cycle operation Washer-Leather spacing washer shield and1screw4084Washer-Metal spacing washer 11876Turntable-Turntable assembly complete withrotor laminations -60 cycleop- eration MOTOR ASSEMBLIES Model R -93-A( first and second product

45、ion) Walnut 11875Turntable-Turntable assembly complete withrotorlaminations -50 cycleop- peration 10194 14233 14232 14223 Ball-Steel ball bearing Base-Motor base and bearing assembly Cap-Turntable spindle cap Coil-Stator assembly-comprising coils and laminations 4083 4084 Washer-Leather washer-Packa

46、ge of 10. Wv her-Metal washer-Package of 10 14224 -105-125 volts, 60 cycle Coil-Stator assembly-comprising coils and laminations -105-125 volts, 50 cycle PAGE 390-B R93, R93A, R93-2, R93S 8, R94 Insist fccri-r%-civtcr41rrms on genuine factory tested parts, which are readily identified Ia-kLontinuea)

47、 and may be purchased From authorized dealers. STOo.CK N DESCRIPTION STOCK No. DESCRIPTION 14225Coil-Stator assembly-comprising coils and laminations PICKUP AND ARM ASSEMBLIES 14226 -105-125 volts, 25 cycle Coil-Stator assembly-comprising coils and laminations Model R-93 (third production) Walnut -2

48、20 volts, 50 cycle 3812Armature-Pickup armature 14228Damper-Motor damperassembly-comprisingone 4462Cable-Pickup cable damper, one damper plate,one screw and one C 11732Coil-Pickup coil and support (L1) washer 5091Cushion-Pickup armature cushion 14216Motor -105-125 volts -60 cycle (MI) 4543Damper-Pic

49、kup damper block complete-with damper 14217 Motor -105-125 volts -50 cycle (MI) plate, washer and screw 14218Motor -105-125 volts -25 cycle (MI) 12329Pickup and arm assembly complete 14219 Motor -220 volt -50 cycle (MI) 4387Screw-Pickup arm set screw-used tofasten arm to 14227Shield-Terminal board shield and nuts pivot shaft 14229Stop-Turntable stop, lockwasher and nut-prevents re moval of turntable Turntable-Turntable 11951Screw-Pickup needle holding screw 14220 PICKUP AND ARM ASSEMBLIES assembly-completewithrotor laminations -60 cycle operation 14221 1422