RCA-Victor-Co-Inc-U-103 电路原理图.pdf

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1、PAGE 414-3 MODELS U-101 and U-103 Five -Tube, Two -Band, A -C, Radio -Phonographs Model U-101 FREQUENCY RANGES Broadcast (A) 540,1,720 kc Broadcast (A) 600 kc (osc.) Short Wave (C) 5,800.18,000 kcShort Wave (C) 15,000 kc (osc., ant.) Intermediate Frequency 460 kc RADIOTRON COMPLEMENT (3) RCA -75 Sec

2、ond Det., A -F Amp. and A.V.C. (1) RCA -6A7 First DetectorOscillator(4) RCA -42 Audio Power Amplifier (2) RCA -6D6 Intermediate Amplifier (5) RCA -80 Full -Wave Rectifier Pilot Lamp (1) Mazda No. 46, 6.3 volts, 0.25 ampere SN-T30.1 TOP FRONT OF CHASSIS Model U-103 Electrical Specifications 1.111.0SC

3、. (ADJ. AT REAR GOO K.C.OF CHASSIS) T RAN 2 0E2 A.V.0 4 AUDIO OS z AN 2 TO TCRM. -1SEC. ADJ. 111 I/11160KC. TRANS P15 soA C5-OSC. CI -ANT. I5,000K.C.15,000K.C. IsT DET. t,osc -Radiotron, Coil, and Trimmer Locations POWER SUPPLY RATINGS R -F ALIGNMENT FREQUENCIES Radio Radio Model U-101 OnlyTotal Mod

4、el U-103Only Total A-6. 105.125 volts, 60 cycles 75 watts.80 watts A-6. 105.125 volts, 60 cycles 75 watts. 100 watts A-5. 105.125 volts, 50 cycles 75 watts.80 wattsA .105.125 volts, 50.60 cycles 75 watts. 105 watts 13-2. 105.125 volts, 25 cycles 80 watts. 85 wattsB-2. 105.125 volts,15 cycles 80 watt

5、s. 105 watts C-6. 105.125/200-250 volts, 60 cycles. 75watts. 80 watts C-6. 105.125/200,250 volts, 60 cycles75 watts. 100 watts C-5. 105.125/200-250 volts, 50 cycles. 75watts. 80 watts C. 105,125/200,250 volts, 50.60 cycles 75 watts. 105 watts POWER OUTPUT RATING LOUDSPEAKER Undistorted 2.5 wattsType

6、 Electrodynamic Maximum 4.5 watts V.C. Impedance 2.2 ohms at 400 cycles PHONOGRAPH Model U-101 Model U-103 Type Manual Automatic -ManualType of Pickup High -impedance magnetic Turntable Speed 78 r.p.m.78 r.p.m. Pickup Impedance 1,400 ohms at 1,000 cycles Alignment Procedure Calibrate the tuning dial

7、 by adjusting dial pointerto the center horizontal line with the gang tuning -condenser plates in full -mesh position. This is a screw -driver adjustment. Order of Alignment Test Oscillator Range- Selector Receiver Dial Setting Circuit to Adjust Adjustment Symbols Adjust tO Obtain Connection to Rece

8、iver Dummy Antenna Frequency Setting 1 6D6 I -F Grid Cap .001 Mfd.460 kc A Left No Signal 550-750 kc 2nd I -F Trans. L9 Max. (peak) 2 Grid Cap 8A7 Del .001 Mfd.460 kc A Left No Signal 550-750 kc 1st I -F Trans. L4 and L5Max. (peak) 3 Ant. Lead (blue) 300 Ohms15,000 kc Right 15,000 kcC Osc.C5 Max. (p

9、eak)t 4 Ant. Lead (blue) 300 Ohms15,000 kc C Right Rock Through 16,000 kc ,6C, Ant. ClMax. (peak)* 5 Abntlue)Lead , ( 200 Mmfd.600 kc t 600 kcA Osc. L8Max. (peak) AM. t Use maxunttm capacity peak Use minimum capacity peak RCA VICTOR DIVISION OF RADIO CORPORATION OF AMERICA, CAMDEN N. J., U. S. A. 收音

10、机爱 好者资料库 RadioFans.CN PAGE 415-B 0101 14626 Capacitor-.07 mfd. (C51) (50 -cycle only) MODEL 0-101SECOND PPODVCT ION This model may be readily identifie.I by the rubber mountings and metal spider used to support the motor turntable. Replacement parts listed fir Model 1101 are directly applicable to t

11、his model except as listed below - Stook No.Description MOTOR ASEMSLIES 30393Cap - Turntable spindle cap 30385Motor - 110 volts - 60 cycle 30386Motor - 110 volts - 60 cycle 30387Motor - 110 volts - 25 cycle 30388Rotor - Rotor assembly complete - comprising laminations, turntable, spindle and spindle

12、 cap - for 60 cycle operation. 30389Rotor - Rotor assembly complete - comprising laminations, turntables, spindle and spindle cap - for 50 cycle operation. 30390Rotor - Rotor assembly complete - comprising laminations, turntable, spindle and spindle cap - for 25 cycle operation. 30392Spacer- Compris

13、ing one spindle and three rotor spider rubber spacers. 30391Turntable - Turntable plate and. cover only. Stock Nos. 14232, 14806, 14807, 14808, 14809, 14810, 14811, and 14812 are not used on Model U-101 Second Produotion. MODELU-101 Revised Motor Components: Thevariousparts of the turntable and roto

14、r assemblyhavebeenassignedseparatestock numbers andarenowavailableforservice purposes as follows: Obsoleted Parts Stock No. 30 3 88Rotor-LaminationsandTurntable complete for 60 cycleoperation. 30 3 89Rotor-LaminationsandTurntable complete for50cycle operation 30390Rotor-LaminationsandTurntable compl

15、ete for 25 cycle operation Superseded by 3 300 3Lamination-Rotor laminations, frame and shaft assembled,for 60 cycle operation 33004Lamination-Rotor laminations, frame and shaft assembled,for 50 cycle operation 33005Lamination-Rotor laminations, frame and shaft assembled,for 25 cycle operation 30391

16、Turntable-Finished turntable plate 30393Cap-Turntable spindlecap 30392Mounting -3 rubber spacers, and 1 rubber bushing for mounting turn- table plate SPEED ADJUSTMENT (SCREW) TO DECREASE SPEED TURN CLOCKWISE TURN SPEED ADJUSTER 30 THE FEL WILL PROTRUDE .56 WHEN ALL THE WAY IN. ADJUST GOVERNOR SO AS

17、TO LEAVE )15 BETWEEN FELT AND DISC, THEN SECURE BY MEANS BR GOVERNOR SCRE ADJUST30 THAT SHAFT IS FREE TO ROTATE WITHOUT END PLAY REMOVE TO TAKE OFF GOVERNOR OIL KEEP FILLED WITH LIGHT OIL TO INSURE SMOOTH OPERATION 00 NOT CHANGE THIS ADJUST MEN, M.1474-* MODEL U-103-Details of Motor 收音机爱 好者资料库 Radio

18、Fans.CN PAGE 417-B U101 . r -0It v. L -1 258r-, -0.2v.iris.45,1. I I2.I.F.TRANC.1 iC.G. 197V.i(loy.A.C. I IAC I) II-0.1V. I tItItt BOTTOM VIEW- REAR OF CHASSIS C.G. 1V49 I1 -0.3V. II I*6.45V. I A.C. Lim 258V. - 1ST DET 4OCC 557 - PRI ADJ DET, A.V.C4.4UOIO 75 1T I.F TRANS. - Say. -Radiotron Socket Vo

19、ltages, Coil, and Trimmer Locations (Model U-101) 330V 205V ELECT CRP CE4 CIO ES C25 et_ecrCAP cm-c.eis _J CIO C.G. 255V I- ( -0.9V*), -0.2V1 I L6A I CV. I100V. I1 CATHODE CURRENTS N 1105s. N. 24.9101 N 30.3250 N-440100. N.542rm Bs CANNOT BE MEASURED AT SOCKET 2. DET., A.V.C.4.4U010 75 1 -0.1V. 255V

20、 I2. IF.TRANS. 1 1.T.I.F TRANS. I 60F6 C.G. L6.4 AC. -0.2V. BOTTOM VIEW- REAR OF CHASSIS -Radiotron Socket Voltages, Coil, and Trimmer Locations (Model U-103) Measured at 115 volts, 60 -cycle supply-Tuned to approximately 1,000 kc (Broadcast)- No signal being received-Volume control minimum Note: Tw

21、o voltage values are shown for some read- ings. The value shown in parentheses with asterisk (4) indicates operating conditions without voltmeter loading. REPLACEMENT PARTS Insist on genuine factory tested parts which are readily identified and may be purchased from authorized dealers. STOCK No. DES

22、CRIPTION STOCK No. DESCRIPTION RECEIVER ASSEMBLIES14377Capacitor -16 Mfd. (C10)-Model U101 only 14634Belt-Variable condenser drive belt 14813Capacitor Pack-Comprising two 16 Mfd. sections (C10, 14632Bracket-Dial mounting bracketC23)-Model U103 only 6237Bushing-Variable condenser rubber mounting bush

23、ing 14846Coil-Antenna coil (L1, L2, LS) 14802Cable -2 -conductor shielded compensation cable complete14647Coil-Oscillator coil (L8, L7, L8) with grid contact cap14833Condenser -2 -gang variable tuning condenser (C1, C2, 12118Cap-Grid contact capC5, C6) 12896Capacitor -15 Mmfd. (C25)14783Connector -2

24、 -contact female for motor power cable 12405Capacitor -47 Mmfd. (C14)5119Connector -3 -contact female for speaker cable 14262Capacitor -110 Mmfd. (C11, C12) 14648Core-Adjustable core and stud for oscillatorcoil 12724Capacitor -120 Mmfd. (C7) 12008Core-Adjustable core and stud for I.F. transformer 12

25、406Capacitor -180 Mmfd. (C16) 14631Dial-Station selector dial 30396Capacitor -470 Mmfd. (C8)14651Drive-Variable condenser vernier drive and pinion gear 14724Capacitor -560 Mmfd. (C17) 14635Indicator-Station selector indicator pointer 12728Capacitor -4,500 Mmfd. (C3) 5226Lamp-Dial lamp 4868Capacitor-

26、.005 Mfd. (C22) 14638Pulley-Idler pulley-less spring. 13138Capacitor-.01 Mfd. (C9, C18) 14639Pulley - Variablecondenserdrivepulley - located on 4870Capacitor-.025 Mfd. (C53) condenser shaft 4839Capacitor -0.1 Mfd. (C4, C13, C19, C21) 14660Resistor -18 ohms, insulated, 1 watt (R14) 12484Capacitor -0.

27、25 Mfd. (C15) 14653Resistor -50 ohms, flexible type, 1/10 watt (R18) 14814Capacitor -10 Mid. (C24) 13819Resistor -270 ohms, wire wound, 1.1 watt (R15) 5212Capacitor -16 Mfd. (C23)-Model U101 only 5175Resistor -5,600 ohms, carbon type, 1 watt (R12) PAGE 418-B lJ101) RUBBER WASHERS ALIGN KEY IN PIVOT SHAFT-1 C. SLOT IN TUBING SET SCREW L.STOP (STK4,43137)WRSHER (STK 14213) WASHER TONE ARM (STK.14290) ARM RDJ SCREW PIVOT ARM SPRING C) TO 0 P1 CT 0 r C z CAP rT1 o co 4 0 0 C (- O G.1 14 0 p. ()I