RCA-Victor-Co-Inc-88K 电路原理图.pdf

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1、Total(U 0a 111-01 -mhm3F, lErki* i0441:41 OET. COIL 2 RI I.F 4 -4 rm.yp.ADJ TRANS 01-460K.C. TO TERM C. SEC.40J 1.15 TRAN 460 K.C. 6K 560,000a 6L7 T 1 R.F111, YELLOWTOP PRoNT 3-330 MIOF OF 0015415 20,00014.C. Type of PickupMagnetic Pickup Impedance96 ohms at 1,000 cycles -Radiotron, Coil, and Trimme

2、r Locations 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 A G C B A L3 3.64 A PRI. IC 11-C4903303 MMFS MMF E.1 .0444 L2 -0.2s S C2 Z-ZOMMF - - R1 550.00 OVABLE SEGMENTS (ROTOR) 1330704 PR06RE3005 7.415 DIRECTION RANGE SELECTOR SHOWN IN A BAND POS

3、ITION. ROTATE. KNOB CLOCKWISE FOR B AND C BANDS - C4 0,1 MFD. R. F. 61(7 L6-.04. 04 LT 0.21 LB 144 A 9 ce 11-490 NMI F ZCC 330 C9 MMI MMF/ 6 RS is3560,000n MOVABLE SEGMENTS (ROTOR) ID C7 rMMF IA L1O IOTA cottC6 5604700 MMF.MMF. P.2 10004 C11 100 MMF. DET. 6L7 L. F. L14411.1.15-1.24 K7 _L Ca o. C102

4、C13 10 MMF.MMF. A - rvvv.,. P.21 co 26009, .51.-.0.1 MFD. PHONO.TERM. BIND. t CF=810 L16-1.1. *L17-7.2A tom. C2206 T0 MMF C27 120 MMF. = 0.25 -= MFD. 33,0004 R22 10 MEGS. 22 R 22006 R7 2.2.MEG 2DET,A.F $,A.V. C. 6Q 7 0 OUT PUT 6F6 6T2 C291- 180 FARE. S303 210.1PA ep, MMF. RIG 390.00? C31 .01 MFO VOL

5、UME _ R6CONTR.- 004- 220,0001.1 2MEG TOTAL RIO 18.0004 C32 ois MFD. 5000000 SECTION 11 16 CZO G -1E MMF. L11 -.05A IS 3. -4- 14 Cal 4500 1/4MMF. 21 MOVABLE ISEGMENTS (01070A1 A Sai 120 MMF 1 C19 O65061111fi 71-11 ,L12 to 2-E0 C23 Bx-r-064-11.7,9 MMF. _ ir to 11- R19 33.000n C26 2-20 PIMP - C25 -1=1

6、22 MMF. Ca! 1550 BARE. C24 665 MMF. OBC. R20 6.J 710.0004 C16 I 0.25 MFD. C37 0.1 MED. R17 62,009s C34 .00s MFR, ciL.21.6911.14o.129: (I: HUrL . COIL TONE CONTROL. CLOSE FOR MELLOW OPEN FOR BRILLIANT i.5:1031F0 RED 25,-8 RED - T1 GREEN FIELD GREEN BROWN 060, 513 st. CO25,4603 8 BLUE, S5 TO FILAMENTS

7、 POWERBLUE 6.DIAL LAMPS SWITCH BROWN-, BROWN -BLACK L20 10906. C42 - 10 MFD. C41 16 MFD. (MOUNTED SLACK AMR. OKNA5,4s.0 88 K -Schematic Circuit Diagram P.24 2004 C40 ?11.E.124) R11 4700006 R2A.25 2 2 2R8 MEGS TUNING 6G5 R23 MEG 1 T-70190-00255 AFC BLACK SPEAKER CONNECTIONS R27 18,000.6 CO 03c, C N (

8、 -1.w, 收音机爱 好者资料库 RadioFans.CN A G 11- C1 . C3, R.F 490, 330 Abu, MMEMM r LS .O4n - - R1 560,000 ABLE SEGMENTS (ROTOR) IPA TO. NOSM3 LES OINECDON RANGE SELECTOR SHOWN IN A BAND POSITION. ROTATES KNOB CLOCKWISE FORD AND C BANOS. C 2-20 MOM C4 0.1 NIFCL C201 2-12 PRI C 4 B. 1APAI LIO gois. 11-4980 an

9、CIO C9 2-12 PAME/ 33(/ PA4 6 sR34. 1 trP,5.P00 f. MOVABLE SEGMENTSSEGMENTS la C7 (ROTOR) T- 1.1F c;1.C6 sec,4700 MMF. 6j ,1MOVABLE 1 SEGMENTS (ROTOR) 16 A sz CI8 120 MMF C19 ; C1I+ if 14500 MMF. z, ., ll1-4L12 lie C23 tr-rdga 2-20 SAME.-.1. w. L13 .17;1- C26 p -. ca .,_, 1550 MMF C26 - r -l=-I C24 2

10、2 MAD,%a% MMF. UNIVERSAL TRANSR CONNECTIONSFOR 11G V. OPERATION. R19 = 33,0002,. RED BA0- eLAc REDLw - R 2 too. OSC. PHONO. TERM. HAD. 352 DET.I. F. 6L.7 L14 111 US-l.zA 6K7 1.16-1 tfir*L17-T. 2 A 1 ,. CIS = MMF. I00 ., CI I i 0.25-.- MFO. - F14 33.000n R10 6J 710.000 S TI CI6 I0.25 MED GREA.1.4 GRE

11、EN BROWN BROW14.51.AcH BROWN B LUE B LUE ACM. TO MOT OR BLACK -RED 711. QF- _ C0 I2CI3 0 MMF.MMF. 22,000, .40 R12 10 MESS, GREEN LINK OPEN -A 5 0 020,000n. 2DET,A.E$A.V.C. 6076F6 376 T2 -L I-6 41 C27 120 MMF o 220oon oO RiS .,- 0 1C8air R7 2 tnieG C28 120 MMF C33 oFy 120 DPI MMF C3I .01 MFO VOLUME =

12、 _ R6CONTR:k9- 220,0000 2MEG TOTAL RIO 160000 4 C31 =1 016- MVO 0 0.0 00.r, SECTION (CONNECTED FOR 2 ZOV. OPERATION) s.1/4 TI GREEN RED - BLACK, 23.5A TOTALrA TAPED I RECO- YELLOW /BLACK - RED TR. 55 POWER BLACK (4n,.6. 54 SliArT) GREEN, BROWN 0 0 513A. BROWN RECT 5Y3G BLUE BROWN -BLACK 1. L20 1300,

13、 C42 - 10 IMF FIELD 151:17r C41 16 MED TO FILAMENTS BLUE6 DIAL LAMPS BLACK -RED TR. R24 2001, C35 .01 RI4 210000. RIG 39000 C37 0.1 MED OUTPUT C34 coos TONE CONTROL MOD, CLOSE FOR MELLOW OPEN FOR BRILLIANT R17 02,000, R8 2.2 NIEGS, C50 1200 MMF 40 al R11 470000A R2S zz, 1 1.212. -1101 54 H OCT:). IN

14、LEAJT. C30 .017 - MOO 5N-76-7 TUNING CGS 7 R23 I MEG IC38 .025 I 00 R27 10,000A BRED FT5 0 000.n. R53-82,0 013.n.). SECT. . C 5 1 .01MF0 c. 0 C 5 2 1w o .01Li en R52 , MFO tO3 I PL51 ,- lij TIOMTAELG l?13(39.- tr, PC Ly or. .CONTROL I Tio YELLOW III L5:114-r-PLT-T TRANSF -J L.50 1 COMP. UN IT FRAME

15、OF oRr_ NI -7_ -., III BLACK/ 14 M1( S10BLACK I BLACK 88 U L 88U2 -Schematic Circuit Diagram R27, 113.000-01111 tuning tube plate resistor is oat ttAd on 01226 instruments; the plate being connected directly to the screen grid of the output tube socket. I MEG. TOTAL 1200 MMF. R yELLOw- 3 S3.0 TERM.

16、ORD C52) RSV% Cil820000 MED. .01 0AFO.2 R6,012004. COMPENSATOR UNIT EXT. GREEN 110v. 5072.3. TO Ii N PUT. TRANS 收音机爱 好者资料库 RadioFans.CN PAGE 375-B 88K, 88U 10n. 0 ,= boom.-, 11100 AI ntn on 14m. moo., I .-.1140 .1110, gmonN SL SPEAKER CONNECTIONS 88U (10) Lead from term. 13 of S3 to ground lance; (1

17、1) Lead from term. 9 of S3 to L64.7; (12) Lead from L6 to C8: (13) Lead from C9 to C8; (14) Lead from term.5 of Si to ground lance; (15) Lead from L1 -L2 to term. 4 of Si; (16) Lead from LI to Cl; (17) Lead from term. 21 of S2 to C19. SLACK7.m,72). R23 i 6ROW5Tn.,_ GROEn In TUNING CABLE CONNECTIONS

18、SOT TO., TOP TRANSE CONNECTIONS t.r. TRANSP. CONNECTIONS ANT COIL CONNECTIONS OET. COIL CONNECTIONS OSC. COIL CONNECTIONS , 355v. A.C. r- 5 V. A.C. RECT 5Y3G - 355V. - CATHODE CURRENT No I 6 S MA No.2 .MA N43 -r./MA P4.46.5MA No.S .0.23414. No.641 MR. Na7 1,14111MAS 4CAnAN,OTs0 16c1,111450610 ELECT

19、CAP P-84109-1 (16V.)I -0.4v. 1I I-l245V. 355V TUNING TUBE, relAtIt-RED CABLE ar/ .5 5 4 aSLACK 1 170V. 220V.-1 TRH- li61-FP6U T f1f 255V. 6.3V. (-3.2V.*); ; ;r _01v 90V. zsitiv.L 61A7-.1 +1I A.C. 255V.J 90V. TERM BRD ELECT. CAP 6.3V. 1DET 6L7 OSC. (-3.2V.) 1sT LF TRANS. PRI. ADJ. 6J7 6.3V. A.C. BOTT

20、OM VIEW- REAR OFCHASSIS I.F 1-255V.- - C.G 1-.47 PR I.(-0.2) ADJ.OV. r=L2C (ASV.) -0.2V. TERM. BRD. 0.2V.) V 2. DET., A F t,A7V.C. -Radiotron Socket Voltages, Coil, and Trimmer Locations Measured at 230 volts, 60 -cycle supply-Tuned to approximately 1,000 kc (Broadcast)- No signal being received-Vol

21、ume control minimum Note: Two voltage values are shown for some read- ings. The value shown in parentheses with asterisk (*) indicates operating conditions without voltmeter loading. PAGE 376-B 88K, 88U 8. 88U2 Alignment Procedure Calibrate the tuning dial by adjusting main dial pointer to the low -

22、frequency (end) calibration mark on dial with the gang tuning -condenser plates in full -mesh position; then adjust the small (vernier) pointer to 0. These are fric tion adjustments. Order of Align- ment Test Oscillator Range Selector Receiver Dial Setting Circuit to Adjust Adjustment Symbols Adjust

23、 to Obtain Connection to Receiver Dummy Antenna Frequency Setting 1 6K7 I -F Grid Cap .001 Mfd.460 kc A Left No Signal 550-750 kc 2nd I -F Trans. L16 and L17Max. (peak) 2 6L7 Det. Grid Cap .001 Mfd.460 kc No Signal 550-750 kc 1st I -F Trans. L14 and L15Max. (peak) 3Ant. Term.300 Ohms20,000 kcC Right

24、20,000 kcC Osc.C20Max. (peak)* 4Ant. Term.300 Ohms20,000 kcC20,000 kcC Det.COMax. (Peak)t 5Ant. Term.300 Ohms20,000 kcC20,000 kcC Ant.C2Max. (peak)$ 6Ant. Term.300 Ohms6,000 kcB Center6,000 kcB Osc.C23Max. (Peak)* 7Ant. Term.200 Mmfd.600 kcA Left 600 kcA L -F Osc.L13Max. (peak) 8Ant. Term.200 Mmfd.

25、1,500 kcA1,500 kcA H -F Osc.C26Max. (peak) gAnt. Term.200 Mmfd. 600 kc600 kcA L -F Osc.L13Max. (peak) 10Ant. Term.200 Mmfd.1,500 kcA1,600 kcA H -F Osc.C26Max. (peak) * Use minimum capacity peqk if two peaks can be obtained. t Use maximum capacity peak if two peaks can be obtained. After this adjustm

26、ent, check for image signal by shifting receiver dial to 19,080 kc. ADJUST SWITCH TO TRIP WHEN 7 401B IgFOIDOYS;,NRSLOE ir TONE ARM 00.1 SCREW ADJUST SET SCREW el LOCNNUT ON PICKUP ARM SO AS TO HAVEIs FROM MOTOR BOARD TO THE FULL TONE NEEDLE PROPERLY INSERTED IN PIER -OR -Tone Arm and Motor Switch A

27、djustnzents RUDDER & E ATREPTE GLOtnw.SE POSITIONFELT ALL THE WAY IN, ADJUST WITH POINTER IN GOVERNOR 30 A5 TO LEAVE BETWEENFELT 5DISC THEN SECURE BY, MEANS ,5f 3CRER ADJOINS 501 HAT SHAFT .5 FREE TO ROTATE wiTHOUT END PLAT REMOVE TO TAKE OFF GOVERNOR CORRECT POSITION IN FOURTEENTH HOLE aj=CLOCKWISE

28、 FROM CENTER OF ARM DO NOT CKANC,E OIL TO INSURE THIS ADJUSTMENT SMOOTH OPERATION -Details of Motor REPLACEMENT PARTS Insist ongenuine factory tested parts, which are readily identified and may be purchased from authorized dealers. STOCK No. DESCRIPTION STOCK No. DESCRIPTION RECEIVER ASSEMBLIES12406

29、Capacitor -180 Mmfd. (C29) 12038Band-Rubber band for tuning tube12952 Capacitor -330 Mmfd. (C3, C10) 14384Belt-Variable condenser drive belt12727Capacitor -555 Mmfd. (C24) 14517Board-Antenna and ground,terminal board12537Capacitor -560 Mmfd. (C5) 12717Board-Phonograph terminal board12729Capacitor -1

30、,550 Mmfd. (C22) 14338Bushing-Variable condenser mounting bushing assembly12728Capacitor -4,500 Mmfd. (C21) 14524Cable-Band indicator cable approx. 61 -in. long 12897Capacitor -4,700 Mmfd. (C6) 14523Cable-Tone control indicator cable approx. 3 -in. long 4838Capacitor-.005 Mfd. (C34) 14394Cable-Tunin

31、g tube cable and socket 13138Capacitor-.01 Mfd. (C31, C35) 12607 12581 11350 Cap-First I -F transformer shield top Cap-Second I -F transformer shield top Cap-Grid contact cap 11315 4752 Capacitor-.015 Mfd. (C32) Capacitor-.017 Mfd. (C30) 12884Capacitor-Adjustable trimmer (long) (C2, C23, C26) 4870Ca

32、pacitor-.025 Mfd. (C38) 12714Capacitor-Adjustable trimmer (medium) (C9, C20) 4841Capacitor -0.1 Mfd. (C4, C17, C37) 14021Capacitor -22 Mmfd. (C25) 5170Capacitor -0.25 Mfd. (C15) 13545Capacitor -39 Mmfd. (C7)4840Capacitor -0.25 Mfd. (C16, C40) 12720Capacitor -100 Mmfd. (C11)11240Capacitor -10 Mfd. (C

33、42) 14262Capacitor -110 Mmfd. (C12, C13)5212Capacitor -16 Mfd. (C41) 12404Capacitor -120 Mmfd. (C27, C28)14372Coil-Antenna coil and shield (LI, L2, L3, L4) 12724Capacitor -120 Mmfd. (C18, C33) 14516Coil-Oscillator coil and shield (L11, L12, L13) PAGE 377-B 88K, 88U & 88U2 REPLACEMENT PARTS (Continue

34、d) STOCK No. DESCRIPTION STOCK No. DESCRIPTION 14414 14o13 Coil-R.F. coil and shield (L5, L6, L7, L8, L9, L10) Condenser -3 -gang variable tuning condenser(C1,C8, REPRODUCER ASSEMBLIES (RL-70E-1) 0 14783 C19) Connector -2 -contact female connector for motor power 13866 12012 Cap-Dust cap for cone ce

35、nter Coil-Field coil (L20) cable 11469Coil-Hum neutralizing coil (L19) 5119Connector -3 -contact female connector for speaker cable 12667Cone-Reproducer cone and dust cap (L18) 12006Core-Adjustable core and stud for Stock Nos. 14376 5118Connector -3 -contact male plug for reproducer and 14283 14 395

36、Reproducer-Reproducer complete 12800Core-Adjustable core and stud for coil Stock No. 14516 14358Screw-Screw, washer and lockwasher to hold core in o 30288Dial-Stationselectordialscalecomplete with tuning yoke tube escutcheon 14355Transformer-Output transformer (T2) 14514Drive-Variable condenser vern

37、ier drive pinion gear and shaft 14357Washer-Spring washer to hold fieldcoil 14345Drum-Variable condenser drive belt drum complete with set screws88K MISCELLANEOUS ASSEMBLIES 14387Escutcheon-Tuning tube escutcheon 11982Fastener-Dial scale fastener 14527Escutcheon-Station selector escutcheon and cryst

38、al com- 30085Gear-Indicator drivegear and hub assembly andin- plete with tone and band indicating strips dicator pointer stem and gear assembly 14529Index-Band indicating strip-mounts in station selector 14341Idler-Station selector drive beltidler escutcheon 14519Indicator-Station selector indicator

39、 pointer 14528Index-Tone indicating strip-mounts in station selector 14520Indicator-Vernier indicator pointer escutcheon 5228Lamp-Dial lamp 14269Knob-Volume control,tonecontrol,orrange switch 14028Nut-Jamb nut foradjustable trimmer capacitor Stock knob Nos. 12714 and 12884 14359Knob-Station selector

40、 knob 12471Plate -6J7 Radiotron socket mounting plate and rubber 11210Screw-Chassis mounting screw and washer assembly cushions-less socket-Stock No. 1119614270Spring-Retaining spring for knob Stock No. 14269 14340Pulley-Station selector drive belt pulley and knob shaft4982Spring-Retaining spring fo

41、r knob Stock No. 14359 14522Reflector-Dial reflector and bracket, complete with dial lamp brackets, tuning lamp bracket, and tone and band indicators MOTORBOARD ASSEMBLIES 14525Resistor -22 Ohms, Carbon type, I watt (R25) 14803Brake-Turntable brake and motor switch 14526Resistor -200 Ohms. Wire woun

42、d, 2* watt (R24) 14805Connector -2 -contact male connector for motor and switch 5112Resistor -1,000 Ohms, Carbon type, * watt (R2) leads 8043Resistor -10,000 Ohms, Carbon type, 2 watt (R20) 13575Escutcheon-Motor speed regulator escutcheon 11175Resistor -18,000 Ohms, Carbon type,* watt (R10) 14328Gov

43、ernorMotor governor complete 14078Resistor -18,000 Ohms, Carbon type,1 watt (R27) 14912Motor -105-125 volts, 50-60 cycle (M1) 14284Resistor -22,000 Ohms, Carbon type,110 watt (R5) 13583Regulator-Motor speed regulator arm and pointer 13669Resistor -22,000 Ohms, Carbon type, 2 watt (R21) 3261Rest-Pick

44、up rubber rest 11300Resistor -33,000 Ohms, Carbon type, 1/10 watt (R19) 14799Screw-Motor mounting screw, lockwasher, washer, and 13735Resistor -33,000 Ohms, Carbon type,1 watt (R4) spacer 11365Resistor -82,000 Ohms, Carbon type,* watt (R17) 30100Springs-Tension springs for brake Stock No. 14803- 113

45、98Resistor -220,000 Ohms, Carbon type, 1 -10 watt (R6) comprising one long and one short spring 11323Resistor -270,000 Ohms, Carbon type, watt (R14) 14804Switch-Motorswitch-locatedonbrakeStockNo. 13005Resistor -390,000 Ohms, Carbon type, 1/10 watt (R16) 14803 (S10) 11172Resistor -470,000 Ohms, Carbo

46、n type, * watt (R11) 11397Resistor -560,000 Ohms, Carbon type, 3/10 watt (R1, R3) PICKUP AND ARM ASSEMBLIES 0 11284Resistor -820,000 Ohms, Carbon type,I watt (R50)14291Armature-Pickup armature assembly 12013Resistor -1 Megohm, Carbon type, 1/10 watt (R23)14930Coil-Pickup coil (L50) 11626Resistor -2.

47、2 Megohm, Carbon type, I watt (R7, R8)14292Damper - Pickupdamperassembly-comprisingone 13732Resistor -10 Megohm, Carbon type, I watt (R22)damper, one damper clamp, and one screw 14343Retainer-Station selector knob shaft and pulley retainer14929Pickup and Arm complete 14350Screw-No. 8-32x3/16 square

48、head set screw for hub and arm on tone or band indicator cable, drum Stock 3811Screw-Needle holding screw No. 14345, Gear Stock No. 30085 REPRODUCER ASSEMBLIES 14374Shield-Antenna or R -F coil shield 14375Shield-Oscillator coil shield88U (Speaker RL76A1) 88U2 12008Shield-First or second I -F transfo

49、rmer shield 14606Cap-Dust cap for cone center 11195Socket -5 -contact 5Y3G Radiotron socket 14922Coil-Field coil (L20) 11196Socket -8 -contact6F6, 6K7,6J7.or 6Q7 Radiotron 14604Coil-Hum neutralizing coil (L19) socket 14602Cone-Reproducer cone and dust cap (L18) 14114Socket-Dial lamp socket 5118Plug -3 -contact male plug for reproducer 12007Spring-Retaining spring for core Stock Nos. 12006 and 14995Reproducer-Reproducer complete 12800 1438Screw-Screw, washer, and lockwasher to hold corein 12907Spring-Tension spring for indicator