RCA-Victor-Co-Inc-C15-3 电路原理图.pdf

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1、PAGE 252-B MAGIC BRAI N ROLLER UNK PIVOT STUD ROLLER UNK DIAL POINTER SHAFT VERNIER DIAL TUNING SHAFT RANGE SELECTOR SWITCH SHAFT Vitaca, 1.714M0-0 Li 13 timic 11 of 111 3622, iMOM 1611, RANGE SELECTOR SHAFT -Selector Dial Change Mechanism C7 560 IA B l3 A X 1.,3. 50,3A 3 0 MMF 2 22 -It MW-12WM. 611

2、0 0.11 6131 C A 135e1wAY I z 4 ss11,. IN r L K L. LIO .117. Lit a %11,110A kFi. WO NUMBERS SHOWN MONA THIS LINE INDICATE CONTACT NUMBERS ON MAGIC BRAIN INut.at ItDET. 411 6121 15011010.1F, 53 0 LSe000, MAI ONO IOW 1 623624 21056 PAWWA, 12 01f- 3- 115 0 nIno. IUWu. 9 ImUmw MAO. L12, LI, MLAKTivELY -C

3、V! COmPLEM VO 61010 7:1E,.:1=5 MAGIC BRAIN-UNIT -Schematic Circuit Diagram Band X 1.Keep blue lead A of Si to antenna coil L4.5 dressed away from chassis, and from yellow lead X of Si to antenna coil L5-6. 2.Bus lead from C10 to Sishould be asshortas possible. 3.Keep blue lead A of S2 to detector co

4、il L18.I9 clear of chassis, coil shield, coil, and other leads. 4. Keep spaghetti lead C6 to X of Si apart from spaghetti lead CS to A of Si, and from chassis. Band A I.Keep green lead terminal Si to antenna coil tap L4 away from chassis, coil shield, and coil. 2. Keep spaghetti lead CS to A of Si a

5、part from spaghetti lead C6 to X of Si and from chassis. BendC Lead from C19 to oscillator coil L7 should be main- tained as short and straight as possible. Precautionary Dressing of Leads for Magic Brain Alignment (Refer to Figure 4) Selector Dial To adjust the dial mechanism, set the range switch

6、to its Standard broadcast position. Place a straight- edge across the center of the dial so that its edge is even with the lower (end) marking at both the low - frequency and high -frequency endsof thedial. Under such conditions the straight -edge should be parallel with the top of the chassis base.

7、 If the straight -edge is not parallel with the top of the chassis base, loosen the nut on the rear of the roller link pivot stud and move the stud up or down until the link roller moves the dial to the desired positionso that the end calibration marks obtain the positionmen- tioned above.Tighten th

8、e nut on the roller link pivot stud. Set the gang tuning condenser to its maximumca- pacity position.Adjust the dial pointer to the low- frequency (end) mark on Standard broadcast scale. This is a friction adjustment. With the gang tuning condenser plates still in full mesh, loosen the two set screw

9、s on the vernier -dial hub.Rotate the vernier dial until the 0 marking is in a vertical plane above the center of the shaft. Tighten set screws. MICROPNONICS IN MAGIC BRAIN RECEIVERS 1)Install a Stock No. 14617 RCA Flexible Socket Adaptor for the RCA -6J7 oscillator tube. 2)Replace the RCA -6,17,cho

10、osing one with low micro- phonics. (3) IF SATISFACTORY PERFORMANCE ISNOT OBTAINED BY OPER- ATIONS (1)ANT) (2), THEN Remove chassisfrom cabinet and loosen Magic Brain under-shield to gain accessto the Oscillator Coil (NA,B,Cs).Using a small brush, apply Household Cement, Ambroid, or similar adhesive

11、to the enameled leads on the inside of the oscillator coil form, sO as to make them mechanically stable.The leads re- ferred to connect to the terminal lugs.Allow about six hours for cement to dry before operating the re- ceiver. :4)If dial calibration or sensitivity is affected by the above operati

12、ons, re-alignthe radio-frequency and oscillator circuits. 收音机爱 好者资料库 RadioFans.CN PAGE 253-B MODELS C15-3 -60 cycles RADIOTRON COMPLEMENT (1) RCA -6K7 Radio -Frequency Amplifier (2) RCA -6L7 First Detector (3) RCA -6J7 Heterodyne Oscillator (4) RCA -6K7 First Intermediate Amplifier (5) RCA -6K7 Seco

13、nd Intermediate Amplifier (6) RCA -6K7 Automatic Volume Control Amplifier (7) RCA -6H6 Aut6matic Volume Control (8) RCA -6H6 Second Detector (9) RCA -6C5 First Audio Amplifier (10) RCA -6C5 Audio Driver Amplifier (11) RCA -6C5 Audio Driver Amplifier (12) RCA -6F6 Power Output Amplifier (13) RCA -6F6

14、 Power Output Amplifier (14) RCA -5Z3 or RCA -5Z4 Full Wave Rectifier (15) RCA -6E5 Tuning Indicator MISCELLANEOUS Power Consumption145 watts Undistorted Output10 watts Maximum Output15 watts Loudspeaker 12inch, Electrodynamic Voice Coil Impedance 7 5 ohms at 400 cycles Intermediate Frequency 460 kc

15、. 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 254-B C15-3 & C15 -4 收音机爱 好者资料库 RadioFans.CN PAGE 255-B C15-3 & C15-4 a en Nr.Mn a ALCLLD (Kb.tit Oe C4C?, DIT CON. C Dr COIL AA CIOcue cuecue 1140,04 MiTkR) U.6515 AVE-1 I. Eke? 0 * wart ME PI

16、MOM Mnc 01011111C1 VOLTITIVITA -Trimmer Locations and Radiotron Socket Voltages Measured at120 volts A.C.-No Signal-All Tubes Intact-Volume Control Maximum-Band Switch on A 1700 it* -Loudspeaker Schematic and Wiring CAPACITOR PACKS ORES.Aut.,.Su. LAW DRIVER TRANSPORPIER INTERIMS& TRANSFORMER BLACK V

17、ALIMILLON tIOT.T, SLACK ItS0TR. 121 5200 it RIACTOR 110I TAP .tiOT TII. OLDOnto START L Pawn. TRANSFORMER WA* 10. WC.11411. C7.4C74 YELLOW LACK PAGE 256-B C15-3 & C15-4 -Duo Junior Connections Alignment Procedure DI AL CALIBRATION: With tuning condenser fully meshed set point- er to coincide with ho

18、rizontal line at low frequency end of Band A scale. CATHODE RAY OSC I LL I GRAPH CONNECTIONS: Connect vertical tiff to grid 1st AF (6C5).Con- nect vertical 0 to chassis. STEP CONNECT RICE SIDE OF TEST OSC. TO - TUNE TEST OSC TO - TURN RADIO DIAL TO ADJUST ME FOLLOWING FOR MAX. OUTPUT 1 2nd I-F Grid

19、in series with 0.0 irnfd 460 Kc Quiet pointnear 600 Kc A Band C45C44 3rd I-F Trans. 2 1st I-F Grid In series with 0 .01inf4. C38C37 2nd I-F Trans. 3 1st De t. Grid In series with 0 .0 imfd C33C32 1st I-F Trans. 4 Antenna in series with 200 mmfd 1720 Kc 1720 Kc A Band C25C14C3 Osc.R-FAnt. 5600 Kc 800

20、 Kc V, Band C23L-F Osc. Rock Gang 8Repeat Step q 7400 Kc 400 Kc ?IV Band C28C15 C4 Osc.R-FAnt. 8150 KC 150 Kc X Band C27L-F Osc. Rock Gang 9Repeat Step 7 10 Antenna in series with 300 ohms 6132 Kc 6132 Kc IP Band c78.1. Osc.R-FAnt. 1118000 KC 18 Mc C Band C75tC12 CI Osc.R-FAnt. Osc. tracks 480 Kc ab

21、ove signal on all bands. t Use minima capacity peak. 11.1!T. RADIO - MONO. SWITCH LOW CAP. SHIELD v.C. A.F. TUBE p -General Phonograph Connections INSTALLATION Change the receiver circuits and add phonograph connections to conform with the above schematic. Resistor R and capacitor C must be used to

22、provide the proper bias. Thoroughly shield leads where in- dicated, keeping them clear of a,c circuits and trans- formers.Place transformer T so astoobtain minimum lengths of secondary leads and mount it in the position which does not cause hum. PARTS REQUIRED M-Magnetic Pickup -Low Impedance VC-Vol

23、ume Control -100 ohms R-Biasing Resistor - 2500 ohms C-By-pass Condenser -10 mfd. OV. LED OLAEK 12 51.OUP( ter. YELLOW 28.v6.54 V. 0-BLAck RED TR. 4.9 TOTAL T-Phono Input Transformer-Stock No. 7445 P-Phono Turntable Mechanism C,-Condenser-.05 mfd. R,-Variable Resistor -0 to 10,000 ohms IYELLOW BLUE-

24、. BLUE BROM 160 j TOTAL FILAME RECTIFIER NT 3 VOLTS -Universal Transformer Schematic and Wiring PAGE 2 57-B EPLACEM ENT C15-3 & C15-4 Insist on genuine factory tested parts, which are readily identified and may be purchased from authorized dealers STOCK No. DESCRIPTION LIST STOCK No. DESCRIPTION LIS

25、T RECEIVER ASSEMBLIES 5240 Cover -Fuse cover plate 4427Bracket -Lowfrequencytonecontrol switch, volume control or high frequency tone control mounting bracket. 11202 10907 Foot -Chassis mounting foot and bracket assembly -Package of 2 ?use -3 ampere fuse -PI -Package of 5 5237Bushing -Variable capac

26、itor mounting bush. ing assembly -Package of 3 . . 5226Lamp -Dial lamp -Package of5 11710Lead -Shielded lead for antenna 11211Cable-Radiotron tuning lamp cable corn - plate with socket 5239Mountingfor 110 in.-Fuse mountingvolt strument 5241Capacitor -Adjustable capacitor -C23, C27 5244Mounting -Fuse

27、 mounting for 220 volt in 11286Capacitor -14 Mmfd. capacitor -C19strument 11292Capacitor -22 Mmfd. capacitor -C11 8041Plate-I.P. or R.F. coil shield locking plate 11289Capacitor -SO Mmfd. capacitor -C8, C30 -Package of 2 11291Capacitor -115 Mmfd. capacitor -C62, C65 5233 11296 Reactor -Coupling reac

28、tor -L29 Resistor -330 ohms -Carbon type -1/4 watt 11291Capacitor -200 Mmfd. capacitor -055. (R2, R12) -Package of 5 11294Capacitor -325 Mmfd. capacitor -C24. 11285Resistor -1006 ohms -Flexible type resits - 11290CapacitorMmfd.-C9, C18, tor (R13, R17, R36) -Package of 5-400capacitor C20, C49, C64 11

29、12Resistor -1000ohms -Carbontype -1/4 11299Capacitor -600 Mmfd. capacitor -C48 watt (R4, R10, R15, R29) -Package of 3784Capacitor -900 Mmfd. capacitor -C69 5 11335Capacitor -1300 Mmfd. capacitor -C22 . 11283 Resistor -1200 ohms -Carbon type -1/4 11287Capacitor -4500 Mmfd. capacitor -C21, C 77 4408 w

30、att (R3) -Package of S Resistor -1500ohms -Carbontype -1/4 4838Capacitor -.00S Mfd. capacitor -058, C19 5159 watt (R8) -Package of 10 Resistor -2200ohms -Carbontype -1/4 5242Capacitor -.005 Mfd. High frequency tone control capacitor -056 11298 watt (R35) -Package of S Resistor-5600 ohms -Carbon type

31、 -1 watt (R21) 5148Capacitor -.007 Mfd. capacitor -C57. 4937Capacitor -.01 Mfd. capacitor -C60 8043Resistor -10,000ohms -Carbontype -2 4858 Capacitor -.01 Mfd. capacitor -C17, C68 watts (R22) 4870Capacitor -.025 Mfd.-C47.3998 Resistor -15,000 ohms -Carbon type -1/4 watt (R30) -Package of 5 4836 Capa

32、citor -.05 Mfd. capacitor -CI, C16, C35, C40, C70Resistor-15,000 1114ohms -Carbon type -1 watt (R5) 4835 4841 Capacitor -.1 Mfd. capacitor -C31 Capacitor -.1Mfd.capacitor -C7, C28, 8065Resistor -27,000 ohms -Carbon type -1/2 watt (R33) -Package of S C36, C41, C67 11300Resistor -33,000 ohms -Carbonty

33、pe - 4885 Capacitor -.I Mfd. capacitor -C10, C34, C39, C42, C43. 5033 1/10 watt (R32) -Package of 1 Resistor -33,000ohms -Carbontype -1 3197Capacitor -.25 Mfd. capacitor-CSl. watt (R11) -Package of S 11203Capacitor -10 Mfd. capacitor -C71. 11282Resistor -56,000 ohms -Carbontype - 5212Capacitor -18 M

34、fd. capacitor -C721/10 watt (R9) -Package of 5 1213Capacitor Pack -Comprising one 4. Mfd., one 10 Mfd. and one 8. Mfd. capacitors 8064Resistor -82,000 ohms -Carbon type -1/2 watt (R43) -Package of 1 -050, C73, C74 5141 Resistor -100,000 ohms -Carbon type -1/4 1236 Capacitor Pack -Comprising two .1 M

35、fd.,watt (R16) -Package of S capacitors, one 680 ohm resistor and one 820 ohm resistor -053, C54, R23, R27. 5027Resistor -150,000 ohms -Carbon type -1/4 watt (R37) -Package of S 4693Clamp -Electrolyticcapacitor mounting clamp (For stock No. 5213) 11297Resistor -330,000ohms -Carbontype - 1/10 watt (R

36、I, R6) -Package of 5. 5211Coil -Antennacoil -A and C Bands- LI, L2, LI, L6 ,C1, C3 5108Resistor -330,000 ohms -Carbon type -I/4 watt (R11, R14, R38) -Package of 5. 1218Coil -Antennacoil -X and B Bands- L3, L4, L7, L8, C2, C4 3033Resistor -1 Megohm-Carbontype -1/4 watt (R7) -Package of 5 1216Coil -De

37、tector coil -A and C Bands- L9, LIO, L13, L14, C12, C14 11151Resistor -2.2 Megohm-Carbon type -I/4 watt (R20) -Package of 5 1219Coil -Detectorcoil -X and B Bands- L11, L12, L15, L16, C13, C15 1231 Resistor -Voltage divider resistor -I sec - tions-4100 ohms, 4750 ohms and 1YU 1217Coil -Oscillator coi

38、l -A and C Bands-ohms (R40, R41, R42) LIE, L20, C25, C75 .5249 Shield -Antenna, detector or oscillator coil 1220Coil -Oscillator coil -X and B Bands-shield L19, L22, C26, C76 250 Shield -Intermediate frequency transformer 221 Coil -Oscillator coil -D Band -L17 shield 5214 Condenser -3 gangvariabletu

39、ning :on denser -C6, C29. C63 11273 4794 Shield-Radiotron shield Socket -4 contact Radiotron socket -For Radiotron 5Z3 PAGE 2 5 8-B C15-3 & C15-4 REPLACEMENT PARTS (Continued) STOCK No. DESCRIPTION LIST 11197 11198 11278 11280 11199 1224 5225 5238 1222 5232 1228 5231 5234 8061 8062 11194 5229 5230 5

40、223 5243 10194 8054 4422 8048 11336 8045 11380 8044 8046 Socket -6 contact Radiotron socket -For Radiotron 6C5 Socket -7 contact Radiotron socket -For Radiotron 6K7, 6H6 or 6F6 Socket -7 ContactRadiotron socket -For Radiotron 6j7 (oscillator) Socket -7 contact Radiotron socket -For Radiotron 6L7 (Fi

41、rst detector) Socket -Dial lamp socket Switch -Low frequency tone control and power switch -S13, S14 Switch -Range switch -S1, S2, S3, S4, S5, S6, S7, S8 ,S9, S10, 511 Terminal -Antenna terminalboard with clip, insulating strip and rivets Tone Control -High frequency tone con- trol (R28) Transformer

42、 -Audio drivertransformer - (T3) Transformer -First intermediate frequency transformer (L23, L24, C32, C33) Transformer -Fourth intermediate frequen- cy transformer (L31, L32) Transformer-Interstage transformer (T2) Transformer -Power transformer105.125 volts 50/60 cycles (T1) Transformer -Power tra

43、nsformer105.125 volts 25.10 cycles Transformer -Power transformer 105/121/ 150/210/250 volts -40.60 cycles Transformer -Second intermediate frequen- cy transformer (L25, L26, C37, C38, C66, R34) Transformer -Third intermediate frequen- cy transformer (L27, L28, C44, C45, C46, R18, R19) Volume Contro

44、l -(R24, R25, R26) DRIVE ASSEMBLIES Arm -Band indicator operating arm Ball -Steel ball for drive assembly -Pack- age of 20 Cam -five position cam for station selector drive assembly Clutch -Tuning condenser drive clutch as- semblycomprisingshaft,balls,ring, spring and washers assembled Coupling -Fle

45、xible couplingforvariable capacitor (includes indicator shaft) Dial -Dial scale with mounting rivets Disc -Drive disc and micarta gear assembly Drive -Tuning condenserdrive assembly complete Escutcheon -Dial escutcheon with vernier scale Gear -Indicator shaft micartadrive gear and vernier idler bras

46、s gear with one spring SUBSTITUTE STOCK No. DESCRIPTION LIST 8050Gear -Gear sector and band indicator op, cratinglink(link connects to arm on band switch) 8053Indicator -Station selector vernier indicator pointer 11793Indicator -Station selector indicator pointer 8051 8049 Link -Complete with roller

47、 and spring Pinion -Vernier pointer drive pinion and shaft 4669Screw -Square head No.8.32:5/32set screw -Package of 10 8047Spring -Coil spring for indicator shaft drive gear and vernier idler (Stock No. 8046) 8052Spring -Coil spring for link -Package of 5 8042Stud -Band indicator operating arm stud

48、-Package of 1 LOUDSPEAKER ASSEMBLY 8059Board -Reproducer terminal board (2 ter- minals) 8060Bracket -Outputtransformermounting bracket 11200Cable -Reproducer cable -Complete with connector 8058Clamp -Cone rim damp -Package of 4 11189Coil -Field coil, magnet and cone housing (L33) 8056Cone -Reproduce

49、r cone (L30) 5039Connector -4 prong male connector plug for reproducer 5040 Connector -4 contactfemaleconnector socket for reproducer cable 9620 Reproducer -Complete 8057 Transformer -Outputtransformer(T4, C61) MISCELLANEOUS ASSEMBLY 5211 Bolt -Speaker mountingboltassembly - Package of 2 11191Bracket-Radiotron tuning lamp mounting bracket -less damp (Stock No. 11192). 11192 Clamp-Radiotron tuning lamp mounting clamp -less bracket (Stock.No. 11191). 11193 Cover -Reproducer cover 11276 Escutcheon -Tuning lamp escutcheon 11379 Escutcheo