RCA-Victor-Co-Inc-RC456A 电路原理图.pdf

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1、MANUAL OF 1939 MOST POPULAR SERVICE DIAGRAMS ZSA-7 1*DET-05C/ 1ZSQ*7 Z-“DeT-A-r-AV.C SOLfeQT OUTPUT 07 OZ9 BLUE. hC q r J!_!2 PSr- _ 0 X OSCI RED |cOJLUieEM VCI.TA6ES SHOUUO HOLD WITHIN - JOIL WITH 117 V, AC SUPPLY. VOLTAftCS MARKED WITH AN ASTERISK AREOPERmNS V0LTA6K IN CIRCWIT5 f TH HIGH SERIES RE

2、SISTAMCE -Tltf ACTUAL WEASURED VOLTAGES WILL BE LOWER,OEFCNDIMS (mTHE VOLTMETER UOAOING. RED J FIELD BLUt PLUG-IN REWSTOR TUBE 5 TRIMMER LOCATIONS Models 46Xl, 46X2 and 46X3 Chassis Nos. 459B and 459C Models 46X11, 46X12, and 46X13 Chassis Nos. RC456 and RC456A GV. o S S 4T0,00D*- ca RANBE aeLsriBR

3、m*. SHVM IM MUMCART HU9IC PMmOM. LOOP CONNECTIONS tKC_p0C-AllTi PUIB-IN -Mli RESISTOR POEVBCJauHU, , /- SVn-E t25R7 e Ti -v In _ ASSI LS-eec .Lowsc. ,a-osc. a-cs-amt. i itSV SOU PLUS-1H ( RiBlSTOR TUBE i.,TR.lMMER. LOcATlOMS 12SQ7 12SA7 12SK7 50L6CT LTAOtS SHOULD HOLD WITHIN t EOT* WITH 117 VOLT A-C

4、 SUPPLY. VALUES MARKED WITH AN ASXSRISK ARE OPERATINS VOLTAOSS IN CIRCUITS WiTM HGH SERiEB RKSISTANCB , THE ACTUAL MEASURED VM7M WILL BE LOWER, DEPENDING ON THE VOLTMETEIE LOADI COMPILED BY M. N. BEITMAN, SUPREME PUBLICATIONS 收音机爱 好者资料库 RadioFans.CN PAiC 494-C Models 46X11, 46X12, and 46X13 Chassis

5、Nos. RC456 and RC456A Five -Tube, Two -Band, AC -DC Superheterodyne Receiver RCA Victor 46X-12. 46X-11. RCA Victor 46X-13. Electrical and Mechanical Specifications NREQUENCY RANGES LOUDSPEAKER Standard Broadcast 540-1,600 kc Type. 5 -inch electrodynamic Medium Wave 2.3-6.3 me V.C. Impedance 4 ohms a

6、t 400 cycles POWER SUPPLY RATINGS INTERMEDIATE FREQUENCY 455 kc A -C Rating 105-125 volts, 50-60 cycles, 50 watts TUBE COMPLEMENT D -C Rating 105.125 volts, direct current. 50 watts (1) RCA-12SA7. 1st Detector-Oscillator (2) RCA-12SK7 I -F Amplifier Cabinet Dimensions (3) RCA-12SQ7 2nd Detector, A.V

7、.C., and A -F Amplifier Model Cabinet Description (inches) (4) RCA-50L6GT (5) RCA-35Z5GT. Power Output Rectifier 46X11. . 46X12 Mahogany Plastic . g y Antique -Ivory Plastic 8 x 12 x 7 - - - - . 8 x 12 x 7 . Dial Lamp (1) Mazda 47, 6.3 volts, .15 amp. 46X13. . Walnut Veneer . . 9-5/16 x 131 x 7-3/16

8、 POWER OUTPUT RATING Undistorted 1 watt Maximum. 2 watts 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 CHASSIS ASSEMBLIES 13601 Resistor -10 meg., I watt (R7) Model 46X

9、11 (RC -456) 35085 Shaft-Tuning condenser drive shaft Model 46X12 (RC -456) 35094 Socket-Dial lamp socket Model 46X13 (RC -456A) 31319 Socket-Tube socket 35000 Ballast-Ballast tube resistor 30585 Spring-Drive cord tension spring 34025 Board-Antenna terminal board 35087 Switch-Range switch 35084 Brac

10、ket-Tuning condenser mounting bracket 35054 Transformer-First I -F transformer with bearing bushing for tuning shaft 35055 Transformer-Second I -F transformer 32830 Capacitor-Mica trimmer comprising 2 sections 35056 Transformer-Output transformer of 2-20 mmfd. (C3, C16) 35000 Tube-Ballast tube resis

11、tor 13200 Capacitor -10 mmfd. (C10) SPEAKER ASSEMBLIES 12724 Capacitor -120 mmfd. (C18, C21) 32907 Cap-Dust cap 31870 Capacitor -415 mmfd. (C15) 35066 Cone-Cone complete with voice coil (For Spkr. 35099 Capacitor -2,100 mmfd. (C7) No. RL86-4) 33584 Capacitor-.005 mfd. (C22) 35065 Cone-Cone complete

12、with voice coil (For Spkr. 4937 Capacitor-.01 mid. (C2, Cll, C23, C28.) No. 39223-4) 4870 Capacitor-.025 mfd. (C24) 34450 Speaker -5 -inch dynamic speaker complete with 32787 Capacitor-.05 mfd. (C17., C27) cone and voice coil (RL86-4) 34505 32576 Capacitor -0.2 mfd. (C4, C29) Capacitor-Electrolytic,

13、 comprising 1 section of MISCELLANEOUS ASSEMBLIES 20 mfd., and 1 section of 12 mfd. (C25, C28) 35101 Back-Cabinet back for Model !6X11 33724 Coil-Oscillator coil (A band). 35102 Back-Cabinet back for Model 46X12 35090 Coil-Antenna coil-B band -(L1, L2) 35103 Back-Cabinet back for Model 46X13 35096 C

14、oil-Loop loading coil (L3) X-818 Cloth-Baffle board and grille cloth for Model 35251 Coil-Oscillator coil-B band (L6) 46X13 net 35082 Condenser-Variable tuning condenser-less drum 35104 Crystal-Dial scale crystal for Models 46X11 35086 Control-Volume control and power switch. and 46X12 32634 Cord-Dr

15、ive cord 35105 Crystal-Dial scale crystal for Model 46X13. 3509a Dial -Dial scale 33317 Fastener-Push cn fastener for cabinet backs 35083 Drum-Tuning condenser drive drum Models 46X11 and 46X12 35091 Indicator-Station selector indicator 35069 Fastener-Push-on fastener for crystal Stock No. 31480 Lam

16、p-Dial lamp - 35104 35095 Loop-Antenna loop complete 35107 Knob-Ivory tuning, range switch or volume 35092 Plate-Dial plate-less dial scale control knob for Model 46X12 35000 Resistor-Ballast tube resistor 35106 Knob-Light mahogany tuning, range switch or 30936 Resistor -120 ohms, 1 watt (R9) volume

17、 control knob for Model 46X11 13428 Resistor -150 ohms, watt (R4) 11455 Knob-Walnut tuning, range switch or volume 13998 Resistor -22,000 ohms, j watt (RZ R3, R6) control knob for Model 46X13 14560 Resistor -100,000 ohms, li watt (R13) 11349 Spring-Retaining spring for knob Stock No. 12264 Resistor

18、-220,000 ohms, watt (R1, R8) 11455 12285 Resistor -470,000 ohms, watt (R10) 14270 Spring-Retaining spring for knobs Stock Nos. 12679 Resistor -2.2 meg., i watt (R5) 35106 and 35107 _ MN . .w. 收音机爱 好者资料库 RadioFans.CN PAGE 495-C 46X11, -12, -13 Alignment Procedure Output Meter Alignment-Connect the me

19、ter across the voice coil, and turn the receiver volume control to maximum. Test-Oscillator.-Connect the low side of the test -oscillator to the receiver chassis through a .01 mfd- capacitor, and keep the output as low as possible. Pre -Setting Pointer.-With gang condenser in full mesh, the pointer

20、.hnuld he adjusted to a horizontal position. Antenna.-The set is equipped with a built-in loop antenna. If the loop antenna is used, the antenna terminal board link should be closed. This link should he open when an external antenna is used. Connect the external antenna to terminal 1. If an antenna

21、longer than 100 feet (including lead-in) is used, connect a 100 to 200 mmf. capacitor in series with the lead-in. Power -Supply Polarity.-For operation on d -c, the power plug must be inserted in the outlet for correct polarity. If the set does not operate, reverse the plug. On a -c, reversal of the

22、 plug may reduce hum. Antenna Circuit Change: In some production of these models, capacitor Cl (68 mmfd.) is removed, and a through con- nection is made from terminal No. 3 on the antenna terminal board to terminal No. 2 on the loop. Dial Lamp Burnout: In Models 46X-1, -2, -3, -11, -12, -13, -21, -2

23、3, -24, the dial lamp is Mazda No. 47 (.15 amp.). In case of frequent burnout, Mazda No. 51 (.2 amp.) can be used for replacement. C EETERNAL ANTENNA LOOP 4 ANTENNA Lope i. r 1 co T.q RFD RAH SELECTOSPu Rreein Lee 125A7 1-OET.-OSC C RECT. 7.-1 1,5601.0 .: aI PLUG ON - 2DCT., RESISTOR RTpET_. ,I.F. A

24、.r. OUTRIT / 1 q CY YY MHE- RSA 125E7 d 1E547 50L66t / / J, / JJ sEHc in (Ei11MG 41%! 1MCT LARE bd r, TO, JiPVI Or TUE SOCKETS 1.5 A., Cu .m,Ra cM tee Steps Connect the high side of test- oscillator to- Tune test-osc. to- Turn radio dial to- Adjust the fol - towing for max. peak output- 1 12SK7 grid

25、 in series with 01 mfd. 455 kc Standard Broadcast band quiet point with gang nearly open 2nd I -F Trans. 2 12SA7 grid in series with .01 mfd. 1st I -F Trans. 3 Ant. terminal 1 in series with 200 mmfd. Link closed 600 kc 600 kc rd Broada st band L5 (osc.) 4 1,560 kc Pointer at second from bottom mark

26、 at extreme right edge of dial plate* Standard Broadcast band C8 (osc.) 5 1,400 kt Resonance on 1,400 kc signal Standard Broadcast band C6 (ant.) 6 600 kc Resonance on 600 kc signal Standard Broadcast band L5 (osc.) Rock gang 7 Repeat steps 4, 5, and 8 8 Ant. terminal 1 in series with 200 mmfd. Link

27、 closed 6.1 me Pointer on dot at extreme right edgeC3 dial* Short Wave band C16 (osc.), (ant.) Rock gang 9 2.44 me Resonance on 2.44 me signal Short Wave band L6 (osc.) Rock gang 10 Repeat steps 8 and 9 *These calibration marks are concealed when chassis is in cabinet. *Use minimum capacity peak if

28、two can be obtained. Check for se:ection of correct peak by tuning receiver to approximately 5.19 me where a weaker signal should be received. 12iK7 EP LOOP CONNECTIONS REAR APRON GREEN 1N WLLDN V V .,? TFt-AR-AVC EnV. YH I F PANS L1 Lw r.RltM RIS RG I + ca RII VOL. CONTROL. TRTAI 160,472oI sacTIOH

29、35 IS RECT. CET 117 !0L66T CN OUTPUT CZ, olME0. LIS SEC LLpp tl A p ON BZW. ELVe1. TI BIC WN V.C. L71 ( *1.1,41112,.X,3 T-1T16T-111611. 4:77 M D I 4 SLACM T qREE-LIE lDTR. 1250 125AT 12510 50L66T tULTAGES SHOULD HOLE WETHIM EEO. WITH 111 VOLT A -C SUPPLY VALVES LIMBIC/ WITH AH USTERISH ARE ORSRATINO VOLT.AGES IN CIRCUITS WITH HIGH SIRIOS RESISTANCE THS ACTUAL SASURnD VITMS WILL SE LOWER, DSMADIHG ON TAM. VDLTMITIR LOADING. TUBE $-TRIMMER LOCATIONS VOL.GONTR6L 收音机爱 好者资料库 RadioFans.CN