RCA-Victor-Co-Inc-127 电路原理图.pdf

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1、PAGE49i -B MODELS 127 and327 6 -Tube, 220 -Volt D. C., Two -Band Radio and Radio -Phonograph MODEL 127 MODEL 327 ELECTRICAL SPECIFICATIONS Voltage Rating 200-250 Volts D. C. Power Consumption.3 Z.7 - 180 Watts Maximum 1 27 - 145 Watts Maximum lumber and Types of Radiotrons 2 RCA -6D6, 1 RCA -6A7, 1

2、RCA -75, 2 RCA-41-Total, 6 Tuning Ranges 540 K. C.-1500 K. C. and 5400 K. C.-15,350 K. C. Maximum Undistorted Power Output 2 5 Watts irr / TRANSFORMER I of93, 7I OSC. e)TRANS. ) if 0 R.F. TRANS. /1 0 ANT. TRANS. I 0. , Jammu, -Location of Line -Up Capacitors- -Viewing bottom of chassis Alignment Pro

3、cedure With tuning condenser fully meshed set point- er so that radial line adjacent to dial reading of 54 coincides with pointer. CAUTION:Do not connect external groundto chassis, connect low sideof test osc. to ground lead during R-F Al 1 gnmem t. STEP CONNECT HIGH SIDE OF TEST OSC. TO - NNE TEST

4、OSC TO - TURN RADIO DIAL TO ADJUST THE FOLLOWING FOR MAX. OUTPUT I-F Grid in series with 0.01 mfd 370 Kc Quiet point near 600 Kc LW Band S60otAA 6.4v ALL VOLTAGES ARE TO- B -1Kadiotron Socket Voltages Loudspeaker Wiring -Schematic CircuitMODEL 127 NOTE:Model 127 and 327 receiver assesblies are chang

5、es required for phonograph operation. I -P cathode bias) are connected direct to netted direct to junction of C34 and R11. INTERNAL CONNECTIONS OF W. I.F. TRANSFORMER O - GRUM 7733 nm woo. nuo INTERNAL CONNECTIONS OF TRANSFORMER -wow 2400n BLOC - 7700.% MI /M u. hut INTERNAL CONNECTIONS OF INTERSTAT

6、E TRANSFORMER uoi use ey000 RESISTOR BOARD CONNECTIONS -1,4110,4 INTERNAL CONNECTIONS OF ELECTROLYTIC CAPACITOR PACK electrically identical with the exception of In Model127 resistors R2 and R7 (R -P and B Negative, the grid of type 75 tube is con - Resistor Rq3 is ositted. 收音机爱 好者资料库 RadioFans.CN P

7、AGE 4 9 4- B 12784327 -Assembly Wiring DiagramMODEL 327 MOTOR BOARD MOTOR CREEK M-1 RAO Ic RED PHONOG. VOLUME CONTROL 200,000 .n. BUS YEW) (SLACK BROWN IE MOTOR CONNECTIONS TAP RED YELLOW BUIE GREEN MAROON YELEOW- MAROON RED sytuow MUM& CONNECTIONS OF MAKER POWER CORO 11.1165 666R -I5 BLACK van RIR

8、R RESISTOR UN CHASSIS SWNs,EILD E&T. INPUT TRIVISF. UNIT SPEAKER INTERNAL CONNECTIONS OF INPUT TRANSFORMERORR REPLACEMENT PARTS MODEL 127 Insist on genuine factory tested parts, which are readily identified and may be purchased from authorized dealers -ZO Stock No. DESCRIPTION 3941 6702 RECEIVER ASS

9、EMBLIES Refer to model 327 Add the following: Dial-Station selectordialscale-Package of 5 Drive-Variable tuning condenser drive as semblv complete Stock NO.8841 Dial, 4487 Drive and 8303 Resistor (R43) not used with Model 127. 7811 9498 9499 9497 6988 REPRODUCER ASSEMBLIES Cable-Reproducer cable Coi

10、l-Field coil, magnet and cone support (L18) Cone-Reproducer cone (L19)-Package of 5 Reproducer complete Transformer-Output transformer (T2) Stock No. DESCRIPTION 6706 6707 6989 6991 6990 9050 4341 6708 4342 4160 MISCELLANEOUS ASSEMBLIES Bezel-Metal bezel for station selector dial Glass-Station selec

11、tor dial glass Knob-Range switch or tone control knob- Package of 5 Knob-Station selector knob-Package of 5. Knob-Volume control knob-Package of 5 Oscillator - Testoscillator - 90-25,000 K. C Resistor-Porcelain type -686 ohms (R19, R20) Ring-Retaining ring for dial glass-Package of 5 Screw-Receiver

12、mounting screw assembly- Comprising four bushings, four screws and four washers Screwdrivcr-Combinition insulated screw- driver and socket wrench for I.F. and R. F. adjustments PAGE 495-B 1 MODEL 327 27 & REPLACEMENT PARTS Insist on genuine factory tested parts, which are readily identified and may

13、be purchased from authorizeddealers 327 Stock No. DESCH M ON ListStock No. DESCRIPTION List RECEIVER ASSEMBLIES 6242Resistor -2 megohms - Carbon type -Yt watt (R11) -Package of 5 10194 Ball -Steel ball for condenser drive assembly -Package of 20 6303Resistor -20,000 ohms -Carbon type -M 2747 Cap -Co

14、ntact cap -Package of 5 4337 watt (R43) -Package of 5 Resistor -270 ohms -Carbon type -1. watt 3938 Capacitor -9 mmfd. (C10) (R17) -Package of 10 3849 Capacitor -50 mmfd. (C25) 6114Resistor - 20,000 ohms - Carbon type - 1 6314 Capacitor-160.mmfd. (C42) -Package of 5. watt (R6, R22) -Package of 5 435

15、2 Capacitor -300 mmfd. (C37, C38)4339 Resistor - 260 ohms - Porcelaintype - 4297 Capacitor -410 mmfd. (C20)Tapped at 220 ohms (R14, R15) 4031 Capacitor -2700 mmfd. (C15, C23, C36) .3991Resistor - 10,000 ohms - Porcelain type 3701 Capacitor -0.01 mfd. (C9, C16) (R21) 4211Capacitor -0.05 mfd. (C1, C2,

16、 C3, C14, C34) 3943Screen -Translucentcelluloidscreen -For dial lamps -Package of 2 3901 Capacitor -0.05 mfd. (C4, C13) 3878Screw -No. 4-404(6 headless cup point set 3888 Capacitor -0.05 mfd. (C29) screw for fastening station selector pointer 3877 Capacitor -0.1 mfd. (C8, C19, C30) 3768 -Package of

17、20 Screw -Square head No. 6-32-X set screw 3796 Capacitor -4.0 mmfd. (C35) for condenser driver -Package of 10 6986 Capacitor -8.0 mmfd. (C39) 6704Shaft -Tuning condenser drive shaft assembly . 3861 Capacitor -Adjustable trimmer capacitor (C21) 4145Shield -First detector and oscillator Radio - 6985

18、Capacitor - Comprising two4.0mmfd. capacitors (C17, C31) 4103 tron shield Shield -I. F. amplifier Radiotron shield 4373 Capacitor pack -Comprising one 0.002 mfd. and one 0.02 mfd. capacitors (C40, C41). 3950Shield F.Radiotron-R.amplifiershield 6983Coil -Antenna coil (L1, L2, L3, L4, C5, C6). 4216Shi

19、eld-Radiotron shield top 6700 CoilOscillator coil (L9, L10, L11, L12, 4215 Shield -Second detector Radiotron shield . C18, C22) 3529Socket -Dial lamp socket 6699 Coil -R. F. coil (L5, L6, L7, L8, C11, C12). 6676 Socket -6 -contact Radiotron socket 6694 Condenser -3 -gang variable tuning condenser 74

20、85 Socket -6 -contact second detector and AVC (C7, C24, C26) Radiotron socket 6841 Dial -Station selector dialscale -Package3572Socket -7 -contact Radiotron socket of 56696 Switch -Range switch (S1, S2, S3, S4, S5, 4467 Drive -Variable tuning condenser drive as- S6) sembly complete 6697Transformer -

21、Firstintermediatefrequency 4340 Lamp -Dial lamp -Package of 5transformer (L13, L14, C27, C28) 3906Mountingassembly - Variable condenser mounting assembly -Comprising 3 bush- ings, 3 lock -washers, 3 nuts and 3 washers -Package of 1 set 6698 6987 Transformer -Second intermediate frequency transformer

22、 (L15, L16, C32, C33) Transformer pack -Audio transformer pack -Comprising one reactor and one inter - 3940 Pointer -Station selector indicator -Package of 5 6705 stage transformer (T1, L17) Tone control (R18, S7) 3218 Resistor -600 ohms -Carbon type -RI. watt (R2, R4, R7) -Package of 5 6695Volume c

23、ontrol (R9) 4338 Resistor - 2500 ohms - Carbon type -X watt (R13) -Package of 10 REPRODUCER ASSEMBLIES 3602Resistor -60,000 ohms -Carbon type -n watt (R5, R8, R16) -Package of 5 4600 Cable -Reproducer cable -4 -conductor with male section of connector -From receiver 3118 Resistor -100,000 ohms -Carb

24、on type -X to resistors and reproducer watt (R1, R3) -Package of 5 7825 Coil -Field coil, magnet and cone support 3439 Resistor -600,000 ohms -Carbon type -h (L18) watt (R23) -Package of 5 8969 Cone -Reproducer cone (L19) -Package of 5. 3033 Resistor -1 megohm-Carbon type -X Watt 7824Reproducer comp

25、lete (R10, R12) -Package of 54599 Transformer -Output transformer (T2) PAGE 4 9 6 -B 127 & 327 MODEL 327 REPLACEMENT PARTS-Continued Insist on genuine Factory tested parts, which are readily identified andmay be purchased From authorized dealers Stock No. DESCRIPTION ListStock No. DESCRIPTION List M

26、OTOR ASSEMBLIES TURNTABLE ASSEMBLIES 3524Brush-Motor brush-Package of 27084 Cover-Turntable cover 3525Cap-Brush holder cap for motor brush-7838 Turntable complete Package of 2 4598Capacitor-Motor capacitor-Two 2.0 mfd.MISCELLANEOUS ASSEMBLIES capacitors (C52, C53) 4677 Bezel-Metal bezel (escutcheon)

27、 for station 4596Escutcheon-Speed regulator escutcheon selector dial glass 3487Governor assembly-Comprising friction disc,4594 Box-Needle box two springs and two balls-Assembled and mounted 4592 Cable-Phonograph input cable -9 -conductor -From chassis to input transformer and 3489Indicator pointer-S

28、peedindicatorpointer volume control complete, withmountingscrewsand washers 6614 3829 Glass-Station selector dial glass Knob-Phonograph volume control knob- 7823Motor-220-volt D. C. motor complete (M1) 6989 Package of 5 Knob-Range switch or tone control knob - 3488Pin-Governor (speed) regulator pin

29、Package of 5 4597Screw-Motor mounting screw assembly- 6991 Knob-Station selector knob-Package of 5. Comprising four screws, four spacers, four lockwashers and four nuts 6990 Knob-Volume control knob-Package of 5. PICKUP AND ARM ASSEMBLIES 3824 Nut-Cap nut for motor board suspension assembly-Package

30、of 4 7821Arm-Pickup arm complete, less escutcheon and pickup 4601 Plug -4 -prong male section of connector plug for reproducer cable 3417Armature-Pickup armature 4602Plug -7 -prong male section of connector plug 6346Back-Pickup housing back for reproducer cable 3385Coil-Pickup coil. (L30) 4341Resist

31、or-Porcelain type -686 ohms (R19, 3386Cover-Pickup coverR20) 3418Cushions-Pickup rubber cushions-Compris- ing one damper and two spacer cushions 4678Ring-Retaining ring for dial glass-Package of 5 and one damper bushing -5 sets 4342Screw-Receiver mounting screw assembly - 3390 Escutcheon-Pickup arm

32、escutcheon complete with mounting rivets Comprising four bushings, four screws and four washers 6335 Pickup-Pickup unit complete4591Screwassembly-Receiver chassis mounting 3389 Rod-Automatic brake trip rod with lock nut -Package of 5 assembly-Comprising eight cushions, four screws, four washers and

33、four spacers 3387Screw assembly-Pickup mounting screw as- sembly comprising one screw, one nut and one washer -10 sets 4160 Screwdriver-Combination insulated screw- driver and socket wrench for I. F. and R. F. adjustments 3388 Screw-Pickup needle holding screw-Pack- age of 10 4593Socket -4 -contact

34、socket for reproducer cable plug 3419 Screw-Pickup cover mounting screw-Pack- age of 10 4595Socket -7 -contact socket for phonograph in - put cable plug SWITCH ASSEMBLIES 3391Suspension spring and washer assembly-For motor board-Comprising one bolt, one top spring, one bottom spring, two cup 3994Cov

35、er-Motor switch cover washers, one C washer and one nut 10184Plate-Automatic brake latch plate-Package of 5 4603Transformer - Inputtransformerpack - Comprising one input transformer, one 10174Springs-Automatic brake springs-Package of 4 choke coil, one 18,000 ohm resistor, one 25,000 ohm resistor and two 0.01 mfd. capacitors (T3, L20, R41, R42, C50, C51). 6896Switch-Eccentric automatic switch complete. 4590Volume control - Phonograph volume con - 3322Switch-Motor switch (S8)trol (R40, S9, S10)