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1、PAGE 361.-B Cl-A NTIsT OETE OSC. 15,000 KC/ C2S-OSC 15,0 00 KC, SEC. ADJ. LI 2 460 KC SEC.ADJ. L14 460 KC 6A8 IsTIF TRANS MODEL 86X4 Six -Tube, Three -Band, AC -DC, Superheterodyne Receiver SN -771 A.E, 2-DET.Pik.V.C. 2 12.1 E tRANS 0.0 3 C36 C32 TI 135K1A (lm) 260K1A(220V) OUTPUT RECT. 6 BALLAST TO
2、P VIEW- REAR OF CHASSIS C24-OSC.130-L9-05C 1,50o K c 600K C C28 -0SC.0 353 K C BOTTOM L10-OSC. 166.7 -Radiotron, Coil, and Trimmer Locations Electrical Specifications FREQUENCY OR WAVE -LENGTH RANGES Long Wave (X)140.400 kc (2,140.750 meters) Medium Wave (A)540.1,600 kc (555.188 meters) Short Wave (
3、C)5 800.18,000 kc (5.8-18 mc) Intermediate Frequency RADIOTRON COMPLEMENT (1) RCA -6A8First DetectorOscillator (2) RCA -6D6IntermediateAmplifier (3) RCA-6Q7G. Second Detector, A -F Amp., and A.V.C. Pilot Lamp (1) Mazda No. 40, 6.3 volts, 0.15 amp. Model 864 R -F ALIGNMENT FREQUENCIES Short Wave (C)
4、15,000 kc (osc., ant.) Medium Wave (A) 600 kc (osc.), 1,500 kc (osc.) Long Wave (X) 166.7 kc (osc.), 353 kc (osc.) 460 kc POWER SUPPLY RATINGS A -C Rating.105.125 volts, 25.100 cycles,55 watts 200.250 volts, 25.100 cycles, 100 watts D -C Rating105.125 volts, 50 watts 200.250 volts. 95 watts Alignmen
5、t Procedure STEP CONNECT HIGfi SIDE OF TEST OSC.ID - TUNE TESTOSC TO - TURN RADIO DIAL TO ADJUST THE FCLLOWING FUR MAX. OUTPUT 1 I -F Grid in series with 0.01 mfd 460 Kc Quiet point near 800 Kc A Band L14L13 2nd I -F Trans. 2 1stDe t. Grid In series with 0 , 0 imfd L12L11 1st I -F Trans. 3 Antenna i
6、n series with 300 ohms 15 Mc nen Band C2,5tC?A Osc.Ant. 4 Antenna in series with 400 mmfd 1500 Kc 1500 Kc A Band c24.1 Osc. 5 600 Kc 600 Kc A Band L9 L -F Osc. 8 -Repeat Step 4 7375 Kc 375 Kc PIN Band C28 Osc. 8 150 Kc 150 Kc XII Band L10 L -F Osc. 9 Repeat Step 7 (4) RCA -25L6 Power Output (5) RCA
7、-25Z5 Half -Wave Rectifier ( 6) RCA-260K1A Ballast for 220 volts or RCA-135K1A Ballast for 110 volts POWER OUTPUT Undistorted 1.6 watts Maximum 2.75 watts Lou DS PEA K ER Type 6 -inch Permanent -Magnet Dynamic Impedance (V .0 )2 4 ohms at 400 cycles Calibrate the tuning dial by adjusting dial pointe
8、r to the center horizontal line with the gang tuning -condenser plates infull -mesh position.This is a screw -driver adjustment. CAUTION: Disconnect receiver power cord before making phonograph connections. Tape shield extension on Radio - Record cable so it cannot make metallic connection with re-
9、ceiver chassis ground. Precautionary Lead Dress.-(1) All bus leads inr -fas- sembly should be kept as short as possible. When necessary to replace bus leads, use only wire having same diameter. (2) Dress capacitor, connected from tone -control switch to terminal board, away from capacitor, connected
10、 tocenter terminal of volume control, and away from exposed green shieldedlead running to phono. term. board. (3)Dress green lead, connected from volume control to 2nd i-f trans- former, as close to chassis as possible. (4) Dress capacitor, connected from 25L6 sockettoredlug onelectrolytic - capacit
11、or, away from phono. term. board. (5) Brown and green leads from speaker must be twisted, dressed along chassis and away from exposed green shielded lead and lug running to phono. term. board. (6) Dress green lead, con- nected between 6A8 and 6D6 sockets, away from pin No. 5 bf 6A8 socket. t Use sax
12、istak capacity peak. UseininiwurN capacity peak - ROCK GARG $ C28 (X Band - H -FOsc.) sust be at least three turns out during this adjustment. 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 400 1,1/sIr /4.8CI I . Li RAP C2 - 0/ MOO. 1700 PIMP 6 3/
13、 L2 3 R2 MOVABLE SEGMENT /(ROTOE) Oct e OSC. 6A 8 4 SO. 33601 MOW ,T R I to Roue -N C6 3,00 mrlmC7 MMF C8 R. tom TooY:1.-41 RS 330. r T4z geg,:, 725.,p72 T 9 A od Afro U/ 1/2 Cl2 0 MOD REMOVE LINH FOR PHOND I. F 606 A.F., 2DET,AVC F711/II3 IC14C/SI 120 - Pr 7272-N L/3 L/4 RI7 a o, C Cize7 PIP De-. /
14、 2 / RIO / z5ao0o- CONN264 A PHONO.BOAED 3 z. C/6 RU 360000 002 DPI 3 3 04l L7, A -E C27 10 HAW 34 MIAFT) RIO I760 260KIA, 2200 BALL04571 17/61E 6 zsz$ 42526 2606 6. 4 a 34076 C24 3-30 Nor. C 28 3- 30HHf ,C2? .All NFU. R/5 Ssoo / 5.0 L8 A L9 CAI 270/1M RANGE SELECTOR SHOWN IN k. BAND POSITION, ROTAT
15、E KNOBCLOCKWISE FOR A 6 t.BANDS. CR2 /4 PIPO 9 3C 1.5.5:4 is,000- 44,0 o /77/71 4J _145, 2 k 0 MOVABLE SEGMENTS SWITCH PROGRESSES IN THIS DIRECTION Fats 20 LIME 16 4 PR0N0N. RE 25Z5 Pz K, 125+S K YELLOW 200- YELLOW C34 035+ L16 C36 OS 32/6 Mt,PfF RD MEG. R16 T5,10 MM/ iRI2 C20 .014WD 134000 R13 OUTP
16、UT 2516 C33 0.23 444 O. -Schematic Circuit Diagram BROWN TI 79LACK LIS 3f111611. 98 BLACK -GREEN C22 07 TONE CONTROL 5124. CAUTION:The chassis is connected to one side of the powet supply. Avoid contact of chassis or parts to external ground when servicing. 00 0) 84/ JUMPER 135A BALLAST TUBE 6 DIAL
17、LAMP CONNECT ION FOR 110V BALLAST TUBE 1454 C27 -IC 3o RANGE SELECTOR SI-Sz C25 17Le REDBLACK Lie L9 Ls osc COILS C 26ToP C 24 C4 13 R -F Wirind Diagram L4 L5 BLUE GIPEE C 2 L3 C 5 收音机爱 好者资料库 RadioFans.CN PAGE 363-B 86 X 4 130V. 125V. A.C. 25V. A.C. 4V. rA115V. A.C. A.C. L - ssKIA 65V.LINE VOLTAGE A
18、.C.7 il5V.-A.0 4 V. ALC. RECT. 2575 260141A 125V. LINE. VOLTAGE 530 V. -A.0 230V. I A.C.I 130 V. ELECT CAP C35 CATHODE CURRENTS N.IS.Ortla. N5-2SOM. N5-30 Zlna. 60448ma. 6-.5 - .6411510. OUTPUT 25L6 -7 0 V. TC19) A.C. L.t.v 25V. 118V.I_ 7.5V. 112V. llOV.*1IEa- is,.ort OV.r-t-wf. 4.0ASeC 16.3V. IA.C.
19、 L C.G. Ov. I ELECT.A.F, 2.-OET.4,A.V.C., - 118V. - - -.- CAP. 60TG C.G. Ir-50V.- -.- C36 ,i,C36,C32 i 2.I .P. TRANSF.r; r r74(316.D. - I+Tr -it-,ti.3V. 513.W iC32 v. (ir ADJ.r (1.0V.*) 3.7V. -.- I-_ I. F 1181/.21V.i_ _F._i 460 Ov. 1_ 6.3V. 606 (40V.s3N-YL-% A.C. 1 i 90v. (I.ov.*)1 1.0V. i A.C. I OV
20、.i I 1 1 i / 2.6V. 50V. - (40 50V.-2.5v7 1ST I.F TRANSF 1.111 4605.0 P -54785-I BOTTOM VIEW -REAR OF CH ASSI S Figure 2-Radiotron Socket Voltages, Coil, and Trimmer Locations Measured at 230 volts, 60 cycle supply; or 115 volts, 60 cycle supply-For 230 volts ci,c,voltages are same-For 115 volts d -c
21、,all voltages except line and heaters about 20% lower-Tuned to approximately 1,000kc(300 meters) Medium Wave-No signal being received-Volume control minimum Note: Two voltage values are shown for some read- ings. The value shown in parentheses with asterisk (*) indicates operating conditions without
22、 voltmeter loading. REPLACEMENT PARTS STOK No.C DESCRIPTION STOCK No. DESCRIPTION RECEIVER ASSEMBLIES 14653Resistor -50 ohms, flexible type, 1/10 watt (R3) 30301Resistor -150 ohms, carbon type, i watt (R14) 14634Belt-Variable condenser drive belt 30545Resistor -180 ohms, insulated, * watt (R16) 1463
23、2Bracket-Dial mounting bracket 13250Resistor -330 ohms, carbon type, watt (R5) 5237Bushing-Variable conaenser rubber mounting 30546Resistor -470 ohms, insulated, * watt (R8) 11350Cap-Small grid -contact cap 13714Resistor -5,600 ohms, insulated, watt (R7, R15) 30295Capacitor-Adjustable dual trimmer (
24、C24, C28) 3998Resistor -15,000 ohms, carbon type, * watt (R6) 13200Capacitor -10 Mmfd. (C27) 14284Resistor -22,000 ohms, carbon type, 1/10 watt (R17) 14262 12404 Capacitor -109 Mmfd. (C10, C11) Capacitor -120 Mmfd. (C14, C15) 12286 5145 Resistor -56,000 ohms, insulated, * watt (R4) Resistor -100,000
25、 ohms, carbond,type, * watt (R1, R2) 12724Capacitor -120 Mmfd. (C23, C30) 5027Resistor -150,000 ohms, carbon type, watt (R12) 12406Capacitor -180 Mmfd. (C18) 12285Resistor -470,000 ohms, insulated,* watt (R13) 12694Capacitor -220 Mmfd. (C19) 5035Resistor -560,000 ohms, carbon type,* watt (R11) 30302
26、Capacitor -270 Mmfd. (C31) 13730Resistor -1 megohm, carbon type, I watt (R9) 30303Capacitor-.0035 Mfd. (C5) 4389Screw-No. 6-32 x 3/16 -inch headless set -screw for drive 30304Capacitor-.0047 Mfd. (C3) pulley, Stock No. 14639 4858Capacitor-.01 Mfd. (C2) 14638Shaft-Station selector knob shaft and pull
27、ey 14393Capacitor-.01 Mfd. (C4, C17, C20, C29) 12008Shield-I-F transformer shield can 11315Capacitor-.015 Mfd. (C21) 12581Shield-I-F transformer shield cap 4886Capacitor-.05 Mfd. (C34) 11265Shield-Radiotron shield 14626Capacitor-.07 Mfd. (C22) 4786Socket -6 -contact 6D6 or 25Z5 Radiotron socket 4839
28、Capacitor -0.1 Mfd. (CS, C9, C12, C13) 11196Socket -8 -contact 6A8, 6Q7G, 25L6 Radiotron or bal- 12484Capacitor -0.25 Mfd. (C16) last resistor tube socket 4840Capacitor -0.25 Mfd. (C33) 14650Socket-Dial lamp socket 30298Capacitor Pack-Comprising 2sectionseach16Mfd. 14637Spring-Idler pulley tension s
29、pring (C32, C36) 12007Spring-Retaining spring forcore,Stock Nos. 1464&, 30297Capacitor -32 Mfd. (C35) 12664 and 12006 30292Coil-Antenna coil-X, A, and C bands (L2, L3, L4, 30291Switch-Range switch (Si, S2) L5) 30299Switch-Tone control switch (S3) 30293Coil-Oscillator coil-A and C Bands only (L7, L8,
30、 L9) 14376Transformer-FirstI -Ftransformer(L11,L12, C10, 30294Coil-Oscillator coil-X band only (L10) C11) 30296Coil-Choke coil (L6) 14308Transformer-SecondI -F transformer. (L13, L14, C14, 14633Condenser -2 -gang variable tuning condenser (C6,C7, C15, C18. R17) C25, C26) 13838Trap-Wave trap (L1, C1)
31、 14648Core-Adjustable core and stud for coil, Stock No. 30293 14645Volume control and power switch (R10, S4) 12664Core-Adjustable core and stud for coil, Stock No. 30294 12006Core-Adjustable core and stud for i-f transformers REPRODUCER ASSEMBLIES 30289 30397 Dial-Station selectordialscale and holde
32、r(for Euro- pean use only) Dial-Station selectordialscale and holder(for other than European use) 30306 (Speaker No. 84106-1) Cone-Reproducer cone, complete, centered in metal cone housing-less transformer (L15) 14651Drive-Variable condenser vernier drive and pinion gear 30305Reproducer, complete 30
33、290Indicator-Station selector indicator pointer 30307Transformer-Output transformer (T1) 4340Lamp-Dial lamp 14636Pulley-Drive belt idler pulley-less spring MISCELLANEOUS ASSEMBLIES 14639Pulley-Variable condenser drive pulley-located on con-14654Escutcheon-Station selector escutcheon and crystal dens
34、er shaft 30373Knob-Range switch knob 14641Reactor-Filter reactor (L16)12673Knob-Station selector, volume control or tone control 30300Resistor-Ballast resistor tube, type 260K -1A, for 220-knob volt operation30308Screw-Chassis mounting screw and washer assembly MI -8115Resistor-Ballast resistor tube, type 135K -1A, for 110- volt operation 4119Screw-No. 8-32 x *-inch headless cup -pointset -screw for knob, Stock Nos. 12673 and 30373 收音机爱 好者资料库 RadioFans.CN
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