RCA-Victor-Co-Inc-813K 电路原理图.pdf

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1、PAGE 606-3 MODEL 813K Thirteen -Tube, Five -Band, A -C, Superheterodyne Receiver Model 813K Radiotron Cathode Current Readings Measured with Milliammeter Connected at Tube Socket Cathode Terminals Under Conditions Similar to Those of Voltage Measurements (1) RCA-6K7-R-F Amp 9.0 ma. (2) RCA-6L7-Ist D

2、et. 3.5 ma. (3) RCA-6P-Osc . 8.5 ma. (4) RCA-6J7-0sc. Control 1.8 ma. (5) RCA-6K7-lst I -F Amp 9.0 ma. (6) RCA -6K7 -2nd I -F Amp 8.0 ma. (7) RCA -6H6 -2nd Det. (8) RCA-6C5-A-F Amp. 0.9 ma. (9) RCA-6F6-Driver 22 ma. (10) RCA-6F6-Output 25 ma. (11) RCA-6F6-Output 25 ma. (12) RCA-6G5-Tuning Tube 3.0 m

3、a. (13) RCA-5T4-Rectifier 128 ma.* (Cannot be measured at socket) Electrical Specifications FREQUENCY RANGES Standard Broadcast (A)530.1,720 kc 49M. (49 Meters)5,970.6,240 kc 31M. (31 Meters)9,410.9,690 kc 25M. (25 Meters)11,680.11,920 kc 19M. (19 Meters)15,090.15,380 kc Intermediate Frequency RADIO

4、TRON COMPLEMENT (1) RCA -6K7 R -F Amplifier (2) RCA -6L7 First Detector (3) RCA -6J7 Heterodyne Oscillator (4) RCA -6J7 Oscillator Control (5) RCA -6K7 First I -F Amplifier (6) RCA -6K7 Second I -F Amplifier R -F ALIGNMENT FREQUENCIES 31M. (31 Meters)9,600 kc (osc., det., ant.) 25M. (25 Meters)11,70

5、0 kc (osc.) 19M. (19 Meters)15,300 kc (osc.) 49M. (49 Meters)6,100 kc (osc.) Standard Broadcast (A). 600 kc (osc.), 1,500 kc (osc.) 460 kc (7) RCA -6H6Second Detector, A.V.C., and A.F.C. (8) RCA -6C5First Audio Amplifier ( 9) RCA -6F6Audio Driver (10) RCA -6F6Power Output (11) RCA -6F6Power Output (

6、12) RCA -6G5Magic Eye Tuning Tube (13) RCA -5T4Full -Wave Rectifier Pilot Lamps (9) Mazda No. 46, 6.3 volts, 0.25 amp. POWER SUPPLY RATINGS Rating A Rating B Rating C 105.125 volts, 50.60 cycles, 150 watts 105.125 volts, 25 cycles, 150 watts 100.130/140-160/195-250 volts, 50.60 cycles, 150 watts POW

7、ER OUTPUT Undistorted 15 watts Maximum 20 watts Precautionary Lead Dress.-(1) Green bus leads from Cl to SI and from C59 to S2 should be dressed away from nearby parts.(2) Green bus lead from C13 to S3 should be 23/4 -inches lohg and dressed away from nearby parts. (3) Bus leads from C12 to L18 and

8、from L18 to S3 should be as short as possible. (4) Red and blue leads from tube No. 3 to 19M. oscillator coil should be dressed away from coil. (5) Tube No.3gridlead should be6 -inches long and dressed away from grounded metalparts.(6)Allleads behind oscillator coils should be dressed close to chass

9、is. (7) Magic Eye cable should be clamped to dial bracket. (8) Filament leads shouldall be twisted.(9) Leads from C44 and C48 should be dressed close to chassis. (10) A -c leads near R22 should be dressed away from R22. (11) Leads from S11 to the first i-f transformer should be twisted and dressed a

10、way from chassis. (12) Capacitors C , CS, and C9 LOUDSPEAKER Type12 -inch Electrodynamic Impedance (v.c.)11.5 ohms at 400 cycles should be dressed perpendicular to chassis and away from eachother and grounded metalparts.k 13) Motor -cable leads should be dressed away from pinion gear. (14) Blue bus

11、lead from A detertor coilto P of tube No.1 shouia be dressed centrally oetween band -switch shield and air trimmer C20. The following should be dressed away from the chassis:(15) Yellow bus lead from K of tube No. 3 to 53.(16) Yellow bus lead from OG of tube No. 2. (17) Blue bus lead from C47 to R26

12、. REFER TO INDEX FOR ADDITIONAL DATA PER- TAINING TO ELECTRIC TUNING. RCAVICTOR DIVISION OF RADIO CORPORATION OF AMERICA, CAMDEN N. J., U. S. A. 收音机爱 好者资料库 RadioFans.CN 1.LI k LEe -E0 RI LS I-4 6lLT A 11-540 ANNE CI Is1.r TRANS.CONNECTIONS MOVABLE SEGMENTS (ROTOR) SSCOLAE ) RANGE SEL CTOR SHOWN IN A

13、 BRNO POSITION. ROTATE NNOR Clotivw Ise .11111 AN. I. F. TRANS. CCOINECTiONS CSO Ese(AME. SS0ANNE iRE DET. (CONVERTER) rlArr LEO LEIS.7 61.77 3I.r TRAK1CONNECTION!r TRANI) commECT-soNS Ce0 0v St Cel 90 60.6, VA1144? TC59 B 100K01 Cl2CI3 17-PW 11-56 1MME C44 RS 68,000. CI6 LS R 25M. ,9 CIO 3-201.4 MO

14、VABLE SEGMENT LI1 CII (ROTOR) 380 a; k 300 Otte.6J7 C61 65 MFD. 2 L.E.5.5.515 LET LE4picr 3 1.eoLET so tei SHINN,C29C32 511 220100mtor N SWF - LSD 0.1 24 I SELECTIVITY SWITCH (MOUNTED ON R26 SHAFT) 60. 2.54 25.-3S6 C2O Of 1,1FD C26 0.1fOED GREEN RECT. ,GREEN 514 BROWN 1=13 C53C54 25MFD.25MFD BROWN L

15、ue DNAPs ,4- HEATER SYS. FIELD DOMED ue 55 MANUAL - ELECTRIC 1Ellow:(.fN1416/3 MANUAL LAMP SW. Y (SEE NOTE) GC,. 0.446 2.65.-0.926 MANUAL -ELECTRIC REMOTE CONTR. SW. (SEE NOTE) Tr.for011 TA o HASNuAL o IE ELECT. 2,O REMOTE. I REMOTE PUSH BUTTON CON(CT. 195 DUMMY TERM ON 0g,Z.VcE),or,(com) 5.7 STATIO

16、N SELECTOR DISCS R40 10 MEG S TERM Milt- REc SW ELECT REMOTE o 59 Cse 2H DET.- 2.112, CSO P19025MED 100,41/1 2.2MEC. ROT 7000 - MUSIC -SPEECH LAMP SW. ._AffECI4 (E NOTE). ,MOTOR REVERSING SWITCH 1ST. AUDIO 3C5 SPEECR MUSK L.F. -TONE CONTR Si AUDIO DRIVER er-0 ELLOW TO BLU REG occ CONTROL RED - GREEN

17、 T-70820-0 c NOTE 55 59, 512. ARE MOUNTED ON MANUAL -ELECTRIC REMOTE. CONTROL SWITCH. 54,513, 510 ARE MOUNTED ON LOW TONE 2,ROWER SWITCH. TUNING CABLE CONNECTIONS -Schematic Circuit Diagram NOTE: On later production, a 1.8 -ohm resistor (R42)is connected in series with the indicator lamps.(See figur

18、ebetween term. 34 of range selector and center term, of S5.) When servicing, this resistor (Stock No. 30647) should be installed. Refer to text for additional changes and service hintS OUTPUT Ora BLUE - YELLOW 49 0,584. 5115 MFD .04mFD o 315 SPEAKER CONNECTIONS COMPENSATOR PACK CONNECTIONS ETICR/64

19、Ifftrawd (r.row CceThCr365V. 565v. A.C. 5%, 174 - RESISTOR fl ASSEMBLVj ; X96v.; :3-17 165V. -242V.1 -RECT. LC. 5T4 5v. A.C. OUTPUT 6F6 ELECT 242.V.E CAP. C53+ 380V. ELECT CAP C54 % r -242.V. ,4ri-2A.C. 3,0V. JAY. ULTOUT A.C.I 6F6 -22V (-2.5Y.11 II 6.4V. 0 V.r A.C. -11 ,I 90V CO236V, R. F. 6K7 V. DE

20、T 6.4v.F .I rir 61.7 IIL A.C. 240V. 365 V. 6.4V. osc.rA.C.1 C.G. 6.17 IjI r4(-0:1vV.71 OV. Il*64TOI c, I 85V. !ELECT CAP. I C57 (-Z5V.) -0.1V. c.G.,t6.4V. 1sT. I.F.r R.C.1 I LEO .) (-2.5 V.*)_ i BLAL.c., 0 V. TO ACK.SA0 1U1-REDIA. T U NINGE( EGS TERM. BRD. W t._,-22.V- 7 ;4 010 165V.1OV.(4,.1) 6.4-V

21、. 6.4V. 11135V.!0 V. A.C. 1 r rl85V. 111 1 I 1 I 1 I I II _L itIiI BOTTOM VIEW -REAR OF CHASSIS 96V. 105C. CONTR.! I I6J7 4.5V. A.F.C., 4, EYE CAMS ELECT CAP.242V.j C55 J 24aV. PRI ADJ. OT 1 F II 6K7 I -9 6V.J ssi.K:AG 1. AUDIO I 6C5etZr-.4. 185V. (100V.*) Et0 6.4V. ;1 AUDIO a_i-Pi. sFe. ,-. v.,48c

22、6. Iff.,A.C. l27V. +FL.1_i (-)V.*) 1-H-1- ii V.T ERIN. BAD. SN-Tto II; I I. F. TRANSF. F. TRANSF. DONUT ADUST ISLE TEST) PRI. Ao4. 3v.r1c.o. sAv.11v. - F L- C. 242V TRANSF 6K7 -Radiotron Socket Voltages, Coil, and Trimmer Locations Measured at 115 volts, 60 -cycle supply -Tuned to approximately 1,00

23、0 kc (Standard Broadcast) -Manual control - No signal being received -Volume control minimum -Fidelity control optional Note: Two voltage values ure shown for some read. ings. The value shown in parentheses with asterisk (*) indicates operating conditions without voltmeter loading. REAR APRON OF CHA

24、SSIS G A IS300K.CO 19 METER BLACK OUTPUT TI BLUE COMA. PACK III Q OUTPUT MOLE BLUE *0 6J7 BLACK - RED ST SLACK -MOW BLACK - RED TR. LIT -05C 31 METER 9,600 K.C. L16-0SC -C) 25 METER LIS .0SC 05-0SC 11,100 H.C_ A BAND 600 K.C. CIO -0 SC. 149 METER 6100 K. C. CI 5 - 05C. A RAND 1500K.C. REMOTE CONNECT

25、IO B ROWN - BLUE - - - GREEN - ROWER- WITMER/TS REEN.TELLOW. REO.YIU.OW STATION SELECTOR DISCS LIOW SLUE IR AO C4 , SLACK - RECTA BLAC TURING MOTOR T4 E 313 BOTTOM TERM. AUDIO AMPLIFICATION AND AFC SUPPRESSION SWITCHES TUNINGI TUBE HOLE C C10 CIS, CY OSC. CONTROL 6J7 4 T DET. 6L7 2. fA- C7.0 CEO -0E

26、7. 31 METER 99 00 K.C. R.F. -ANT. 9,603 H. 31 METER 2;611g pilg .c:eC3 T2 L P I.F THAN 6K?SLACK BLuE I 23 NIETEB A BANISTI RED 31 METER F f GREEN _I 49 METER 1 TeLLovil ,/,/ AUDIO DRIVER 9 AumO 40 HOLE - 6K7 - SEC. 50.i. 121 46014.C. - SEC. ADJ. L24 440 R.C. 3.11, I F. T RA N,S. SEC. 50.J. L 27 460

27、K.C. I-SEC. ADJ. 6E1-JLOG 4601.4.C. .F. C.- EYC TOP VIEW- FRONT OF CHASSIS BR BLUE - IC-YELLOW0-SLUE tREENEO GR STATION SELECTOR PUSH BUTTONS MUSICELECTRIC S-GREENC-BLACK cDno-,:-icacc SPEECHMANUAL DIAL LAMPS GREEN-STATION SELECTOR PUSH BUTTONS sN-TS 9 Radiotran, Coil, and Trimmer Locations 收音机爱 好者资

28、料库 RadioFans.CN Alignment Procedure Calibrate the tuning dial by adjusting dial pointer to the left ends of horizontal calibration lines with the gang tuning- condenser plates in full -mesh position. This is a screw -driver adjustment. The -Fidelity- control should be turned counter -clockwise durin

29、gallalignmentoperations. TheManual -Electric Remote- swit,ch should be turned to Manual (clockwise) duringalignmentunlessotherwise specified.The bottom shield -pan must be in place during spread -band alignment. Permit the set to operate at least five minutes before attempt, ing alignment. Cathode-r

30、ay alignment is preferable for adjustments 2,3, and 4 due to the flat -topi-fcharacteristics PAGE 609-3 813K The Magic Eye may be used as tan output indicator for all other adjustments. It is preferable to replace the 6G5 tuning tube with a 6E5 during alignment. CAUTION.-The magnetite core screw L29

31、 on the bot- tom of the 4th i-f transformer has been accurately adjusted, for an exact electrical balance of coil L29 to center tap, dur- ing manufacture and should not be disturbed. However, if for any reason the adjustment has been moved fromits original position, it will be necessary to mechanica

32、lly adjust this screw until the end of the stud protrudes exactly 1/8 of an inch(four threads exposed) above the brass bushing nrior to any alignment operations. Order of Alignment Test Oscillator Range Selector Receiver Dial Setting Circuit to Adjust Adjustment Symbols Connection to Receiver Dummy

33、Antenna Frequency Setting 1 4th I -F Trans. L28 2 No. 6, 6K7 2nd I -F Grid Cap .001 Mfd. 460 .!cc Standard Broadcast No Signal 550-750 kc 3rd I -F Trans. L26 and L27 3 No. 5, 6K7 1st I -F Grid Cap .001 Mfd. 460 kc Standard Broadcast No Signal 550-750 kc 2nd I -F Trans. L23 and L24 4 No. 2, 6L7 Det.

34、Grid Cap .001 Mfd. 460 kc Standard Broadcast No Signal 550-750,kc 1st I -F Trans. L20 and L21 5Ant. Term.300 Ohms 1,600 kc: a 31M. 9.6 mc31M. Osc.L17 Ant. Term.300 Ohms 1,600 kc a 31M. 9.6 mc31M. Det.C20 7 Ant. Term,300 Ohms 1,600 kc: a 31M. 9.6 mc31M. Ant.C3 8 Ant. Term.300 Ohms 1,300 kc a 25M. 11.

35、7 mc25M. Osc.L16 9 Ant. Term.300 Ohms 1,700 kc a 19M. 15.3 mc19M. 0L15 10 Ant. Term.300 Ohms 6,000 kc: e 49M. 6.0 mc49M. Osc. C10 11 Ant. Term.300 Ohms 6,100 kc: e 49M. 6.1 mc49M. Osc.C10 12Ant. Term.200 Mmfd. 600 kc Standard Broadcast 600 kcA L -F Osc.L35 13Ant. Term200 Mmfd. 1,500 kc Standard Broa

36、dcast 1,500 kcA H -F Osc.C15 14 Ant. Term.200 Mmfd.600 kc Standard Broadcast 600 kcA L -F Osc. 15 Ant. Term.200 Mnafd.1,500 kc Standard Broadcast 1,500 kcA H -F Osc. C15 16 Proceed to A -F -C Discriminator Adjustments Outlined Below Adjust to Obtain Turn Extreme Counter- clockwise Max. (peak) Max. (

37、peak) Max. (peak) MM. Eye b MM. Eye Min. Eye MM. Eye Min. Eye d MM. Eye f MM. Eye Min. Eye MM. Eye Min. Eye Min. Eye a-Refer to Spread -band Adjustments below for Test Oscillator setting for adjustments b-Use minimum inductance peak (plunger out) if two peaks can be obtained. To check forcorrect har

38、monic, carefully set Test Oscillator to 1,200 kc using Crystal Calibrator. Signal should be indi- cated by Magic Eye in 31M. band near 9.6 mc. c-Use minimum inductance peak (plunger out) if two peaks can be obtained. To check for correct harmonic, carefully set Test Oscillator to 900 kc using Crysta

39、l Calibrator. Signal should be indi- cated by Magic Eye in 25M. band near 11.7 mc. d-Use minimum inductance peak (plunger out) if two peaks can be obtained. To check for correct harmonic, carefully set Test Oscillator to 900 kc using Crystal Calibrator. Signal should be indi- cated by Magic Eye in 1

40、9M. band near 15.3 mc. e-Refer to Spread -band Adjustments below for method of using the RCA Stock No. 9572 Crystal Calibrator for adjustments 10 and 11. f-Use minimum capacity peak if two peaks can be obtained from 1,000 kc harmonics. PAGE 610-B 813K Spread -band Adjustments.-Bottom shield -pan mus

41、t be in place before attempting spread -band alignment. Aligrment of the spread (Overseas) bands requires special procedure since test oscillators used alone are not ordinarily sufficiently accurate for this purpose. The RCA Stock No. 9572 Crystal Calibrator affords a convenient and accurate alignme

42、nt stand- ard. Wrap a few turns of wire around the crystal calibrator and connect one free end to the antenna terminal of the receiver. Using the crystal calibrator to obtain the necessary accuracy, follow the tabulated alignment procedure for the 31M., 25M., and 19M. bands. The 31M. band alignment,

43、 for example,isdone as follows: Tune the receiver (Standard broadcast band) to the 1,000 kc crystal calibrator output with the crystalcali- brator Hi -Lo switch in Hi position. Snap Hi -Lo switch to Lo and carefully tune receiver to 1,600 kc (the. sixth 100 kc harmonic above 1,000 kc) for minimum Ma

44、gic Eye opening (Min. Eye). Move crystal calibrator away from an- tenna wire, connect test oscillator, and carefully adjust test oscillator for minimum Magic Eye opening at a setting of approximately 1,600 kc. Raise test -oscillator outputtogivesufficientharmonic output anduse6th harmonic (9,600 kc)

45、 for aligning in 31M. band at 9.6 mc. Align in the 25M. band at 11.7 mc (11,700 kc), the 9th harmonic of the test -oscillator1,300 kc output. Align inthe 19M. band at15.3 mc (15,300kc),the9th harmonic of the test -oscillator 1,700 kc output. In each case select the peak giving minimum Magic Eye open

46、ing. A -F -C Discriminator Adjustments.-These adjustments are rather critical and should be performed with extreme care. Improper adjustment may result in complete failure of the oscillator control tube to function or else may cause it to detune the oscillator instead of tuning it to the signal. It

47、is assumed that the magnetite core adjusting screw L28 (top of 4th i-f transformer) has been turned all the way out (extreme counter -clockwise)during the preceding tabulatedadjust- ments. Adjustments are as follows: Remove spring N on link and arm assembly which connects the Manual -Electric - Remo

48、te switch shaft to the throw -out gear bracket. Turn Fidelity control counter -clockwise. Connect antenna to re- ceiverantennaterminal.WiththeManual -Electric -Re- mote switchinManual(right)position,tuneina strong local station near 600 kc or the low -frequency end of the A band as accurately as pos

49、sible by means of the tun- ing tube Magic Eye. The most accurate adjustment will be obtained by adjusting the vernier tuning knob mid -way between the two points where the eye just appears to start to open. This will place the generated i-f carrier signal fre- quency exactly in the center of thei-f amplifier response curve (should be 460 kc if i-f amplifier was properly aligned) and is the frequency to which the a -f -c discriminator (4th i-f transformer) should be tuned to resonance. Without dis- turbing any of the receiver adjustments, place the