RCA-Victor-Co-Inc-300 电路原理图.pdf

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1、i,;CL MODEL300 Four -Tube Radio -Phonograph Combination (A. C.) 002 UFO 4-50 141AFG C-2, 445RF AMPL *41.420 ,RCA -70 _crs Tossaro ,NASSIS a tE C.7 14-405 IA?Al. D. 1,0 4 50 mi704) RCA -77 III04 30000. 11ALC 320 CII 6411.1 Kt 500000. CR almiU4.7 50 000, C IS 01.41 D Electrical Specifications Voltage

2、Rating 103-113 Volts Frequency Rating 23, 50, and GO Cycles Power Consumption 55 Watts Tuning Range 540-1710 K. C. Type and number of Radiotrons 1 RCA -711, 1 RCA -77, 1 RCA -38, 1 RCA-2525-Total,4 Undistorted Output0 3 Watts at 60 Cycles 7: 00 :1 MF0 CO 11I/ A Sls r2 R4 1000,. I -MAROON -MAROON -GR

3、EEN 050 T-1 BLACK -REE BLACK INTERNAL CONNECTIONS OF SPEAKER L-9 5900A t 005 a 0SO., CIS 41AfU (14 IS MC LI WHITT C II 5000A ITGREEN C 4D. T 4.I.41/PP. rnio r- BLACK tNYTRNAL. CONNECTIONS OF GAPAccroR PAC. 0 I. Tont-k-A7S-_/T1eS_ ANIA1.11 c. N IU 2 SO. 1i ID _Lc,o OS WU CII I 4 MID S/Ot, 0000 00 II)

4、 450. 210/,GO IV Se hying/tic Wiring. Diagram SPAGHETTI MUST BE FREE IN SLOT AND REST LIGHTLY AGAINST CAMBRIC RESILIENT BUMPER COVER LEATHER WASHER MUST BE UNDER METAL WASHER BALL END BLA10N0 REPLACE BEFORE ASSEMBLING SPRING MUST HAVE SUFFICIENTMAIN BEARING TENSION TO HOLD STATOR STOP SURFACE DOES N

5、OT AGAINST RESILIENT BUMPER REQUIRE LUBRICATING -Details of Motor 5TATOR BEARING SURFACE. OCCASIONALLY LUBRICATE WITH LIGHT OIL OR GREASE 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 PLCE. 57 5-B SOCKET VOLTAGES Measured at Maximum Volume -115 V

6、olts, 60 Cycles Radiolron No. Cathode to Control Grid, VoltsD.C.Volts Cathode to Screen Grid. D.0 Cathode to Plate, Volta D.C. Plate Current M. A. Filament or Heater Volts RCA -78, R. F.2.5100 95 200 900 170 4.0 0.2 14.0 6.0 6.0 6.0 _5.0 RCA -77,Detector*5.0 RCA -38 Output14.0I00 -RCA -2525. Rectifi

7、er-II:to .0 I monsoible to measure on ordinary voltmeter. NOTE: 25 cycle voltages will helessthan those obtained on 60eyclrs. REPLACEMENT PARTS Insist on genuine Factory tested parts, which are readily identified and may be purchased From authorized dealers Stock No. DESCRIPTION ListStock No. DESCRI

8、PTION 1 nit RECEIVER ASSEMBLIES 7484Socket -Radiotron five contact socket 2816Resistor - 1,000 ohms - Carbon type -% watt (R9)-Package of 5 7458Socket-Radiotron six contact socket 2981Capacitor -320 mmfd. (C11) PICKUP AND ARM ASSEMBLIES 3048Resistor -500,000 ohms-Carbon type -323810 Coil-Pickup coil

9、 (L10) watt (R6)-Package of 5 3811 Screw-Needle holding screw-Package of 10. 3076Resistor - 1 megohm - Carbon type -% watt (R4, R8)-Package of 5 3812Armature 3077Resistor -30,000 ohms-Carbon type -32 watt (R3)-Package of 5 6592Pickup and arm assembly complete TURNTABLE AND MOTOR 3078Resistor -10,000

10、 ohms-Carbon type-% watt (R2)-Package of 5 3808 ASSEMBLIES Board-Motor terminal board 3556Capacitor -0.05 mfd. (C4, C5) 3809Spring-Package of 5 3569Knob-Station selector or volume control knob-Package of 5 3813Motor suspensionassembly-Comprising one screw, one metal bushing, two rubber 3594Resistor

11、-50,000 ohms-Carbon type-% watt (R7)-Package of 5 bushings, one flat washer, one lockwasher and one nut -3 sets 3615Knob-Phonograph volume control knob- 4052 Spring-Stator tension spring-Package of 5 . Package of 5 4123Damper-Motor damping block-Package 3460Capacitor -0.05 mfd. (C20) of 5 3641Capaci

12、tor -0.1 mfd. (C9, C10, C13) 7651Coil-Stator coil -60 cycle operation 3697Escutcheon-Station selector escutcheon- 7652 Coil-Stator coil -50 cycle operation Package of 2 7653Lamination-Stator laminations-Assembled 3698Escutcheon-Volume control escutcheon- -60 cycle operation Package of 2 7654Laminati

13、on-Stator laminations-Assembled 3701Capacitor -0.01 mfd. (C12) -50 cycle operation 3724Reactor-Filter reactor (L7) 7655Lamination-Rotor lamination assembly - 60 cycle operation 3806Resistor - 250 ohms - Wire wound - Por- celain type-Filament resistor (R10) 7656 Lamination-Rotor lamination assembly -

14、 50 cycle operation 3807Screw-Chassis mounting screw and washer -Package of 10 7657Base-Motor base and bearing assembly . 4007Capacitor -0.0024 mfd. (Cl) 9038Motor complete -105-125 volts -60 cycles. 6303Resistor -20,000 ohms-Carbon type-% watt (R5)-Package of 5 9039 9040 Motor complete -105-125 vol

15、ts -50 cycles. Turntable complete-With spindle for 50 or 6512Capacitor -0.005 mfd. (C16)60 cycle operation 6585Condenser-Two gang variable tuning con- denser 10194Ball-Steel ball bearing-Package of 20 6586Volume control-Radio volume control (RI).REPRODUCER ASSEMBLIES 6587Capacitor-Comprising five 4.

16、0 mfd. and one6591Transformer-Output transformer 15.0 mfd. capacitors (C6, C14, C15, C17, C18, C19) 8987Cone-Reproducer cone complete (L8)- 6588Coil-R. F. coil assembly (LI, L2, L3) Package of 5 6589Coil-Detector coil (IA, L5) 9037Coil assembly-Comprising field coil, magnet and cone support (L9) 6590Volume control-Phonograph volume con- trol (R11) 9044Reproducer complete 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN