RCA-Victor-Co-Inc-QU2M 电路原理图.pdf

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1、PAGE 27-C MODELS QU2C, QU2M, Q22, 0K23, 025 and 02 7 Chassis No. RC -507C RC -507D RC -507, RC -507B RC -507A (RC -507K) Six -Tube, Five -Band, A -C, Superheterodyne Receiver s and Electrical and Mechanical Specifications LOUDSPEAKER (RL -70M1) FREQUENCY RANGES Standard Broadcast (A band) 540-1,720

2、kc (556-174 m) Medium Wave (B band) 3 0-9.5 me (100-31.6 m) 31 Meter Spread Band . 9 5.11,7 me (31.6-25.6 m) 25 Mter Spread Band 11.7-15.1 me (25.6-19.9 m) 19-13 Meter Spread Band 15.1-22.5 me (19.9-13.3 m) INTERMEDIATE FREQUENCY 455 kc POWER SUPPLY RATING QU 2 Rating C .105-125, 200-250 volts, 50-6

3、0 cycles, 80 watts POWER SUPPLY RATINGS Q 22, QK 23 QU2M has - magnetic pickup) Model Q27 Q-27 IS SIMILAR TO MODEL Q-25 OIL HERE MOTOR SPINDLE TLRNTADLE, MOTOR PHONO -RADIO CONTROL OIL HERE LEN. Fu LL TONE CONTROL USED NEEDLE DO QU 2. PKKUO NEW NEEDLE bOx NEEDLE HOLE NEEDLE GAUGE PLATE NEEDLE ECREw

4、Motorboard and Controls Model Q22 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 PAGE 28-C Qu -2, Q-22, QK-23, Q-25, Q-27 -2- o o z, V Y h a0 0-0ffo 000 OSI n ei Q r N o N o -IH IH N of o z 0 k. 1F-0-II z z o SsII U f el 1f1 V0 -fe lm m ?C Q iN ,

5、n V a e d r YIN N Y ceo O LL W D U J m tTv, N a U Lr s -IF-f O m 9 O . 0 Ifl V 1 收音机爱 好者资料库 RadioFans.CN PAGE 29-C QU-2, Q-22, QK-23, Q-25, Q-27 Phonograph Information The tU2M is equipped with a magnetic pickup, and the QU2C with a crystal pickup. The output of the crystal pickup is fed into the au

6、dio end of the receiver through a switch and compensating circuit. On instruments using a magnetic pickup, a transformer and compensating circuit are used between the pickup and the audio input (see schematic diagram). The transformer has two jacks, the larger one (primary) for input from the pickup

7、 and the smaller one (secondary) for output to the compensating circuit. The components of the compensating circuit are mounted externally to the chassis on a terminal board in the cabinet. CONNECTIONS AS USED WITH MAGNETIC PICKUP (QU2M) 66,000!1 PICKUP GREEN 12,000 R 035 MFD. GREEN 1 2 3 .005 YELLO

8、W MFD. R. PH. 56 -RADIO- PHONO. SW. 120,00011 Schematic Showing Magnetic Pickup Cnnections (QU2M) The phonograph motor has its bearing filled with oil and sealed at the factory and hence should not require lubrication in the field. However the two rubber tired idler pulleys should have their bearing

9、s lubricated occasionally with S.A.E. 10 oil. Care should be taken not to get any oil, grease, or other foreign matter or. the rubber tires. These tires and the motor spindle should be cleaned occasionally with quick drying naphtha. The turntable spindle bearing should also be lubricated occasionall

10、y with S.A.E. 10 oil. Alotor Schematic CABLE SOCKET BLACK 10 OUTPUT PLATES BLACK -BLK TO OUTPUT SCREEN: BONN -RECTIFIER FILAMENT Connections and Colors of Loudspeaker and Cable CONNECTIONS AS USED WITH CRYSTAL PICKUP (2C) .007 15,00011 z 57 BROWN F VOL. CONTR. 500, 00 0 - TAP AT 125,000n RED GREEN -

11、RED GREEN -RED BROWN 55 ON 220V MODELS 56 ONLY ON VOL CONTROL .Schematic Circuit Diagram with Crystal Pickup (QUA) The motor switch is automatic for both starting and stopping, and when properly adjusted, will turn the motor on as the pickup is moved front the pickup rest toward the turntable. The s

12、witch should he adjusted so that it will snap into the off position when the pickup needle is 11 inches from the center line of the spindle shaft. The motor may be shut off at any time by placing the pickup on the pickup rest. ROLLER LEVER SPRING-. ACTUATING LEVER SHELLAC - - t - CAM ASSEMBLY E CAM

13、SPRING w CAM SET SCREW SPOOL CLIP MERCURY TUSE MERCURY SWITCH MECHANISM (VIEWED FROM FRONT SHOWN WITH PICKUP IN REST POSITION) Dial -Indicator and Drive Mechanism 收音机爱 好者资料库 RadioFans.CN PAGE 30-C QU-2, Q-22, QK-23, Q-25, Q-27 Alignment Procedure Test-Oscillator.-For all alignment operations, connec

14、t the low side of the test -oscillator to the receiver chassis, and keep the output as low as possible to avoid a -v -c action. Calibration Scale on Indicator -Drive -Cord Drum.-The tuning dial is fastened in the cabinet and cannot he used for reference (luring align- ment, therefore a calibration s

15、cale is attached to the indicator -drive - cord drum which is mounted on the shaft of the gang condenser. The setting of the gang condenser is read on this scale, which is calibrated in degrees. The correct setting of the gang in degrees, for each align- ment frequency, is given in the alignment tab

16、le. To determine the corresponding frequency for any setting of the calibration scales, refer to the accompanying drawing which shows the dial with 0-180 calibration scales drawn at top and bottom. Pointer for Calibration Scale.-Improvise a pointer for the calibra- tion scale by fastening a piece of

17、 wire to the gang -condenser frame, and bend the wire so that it points to the 180 mark on the calibra- tion scale when the plates are fully meshed. Dial -Indicator Adjustment. - After fastening the chassis in the cabinet, attach the dial indicator to the drive cable with indicator at the 540 kc mar

18、k, and gang condenser fully meshed. The indicator has a spring clip for attachment to the cable. Spread -Band Alignment.-The most satisfactory method of aligning or checking the spread -band ranges is on actual reception of short- wave stations of known frequency, by adjusting the magnetite -core os

19、cillator coil for each hand so that these stations come in at the correct points on the dial. When a test oscillator is employed for spread -band alignment, a final check should be made on actual reception of short-wave stations of known frequency, and the magnetite -core oscillator coil for each ba

20、nd should be re -adjusted so that the stations come in at the correct points on the dial. Q27 (RC507K) Service Data: Model Q27 is similar to Model Q25 which is described in the Service Note for Models Q22, QK23, and 025. Replacement parts for Q27 are same as for Q25, with exception of the following

21、parts used in Q27: CHASSIS ASSEMBLIES (RC -507K) 37976 Bracket-Tone control mounting bracket 38409 Control-Tone control 38412 Control-V o l u m e control and power switch 32634 Cord-Drive cord (approx. 29 -in. overall length) 13988 Resistor -10 ohms, t watt 14350 Screw-No. 8-32 sq. head set screw fo

22、r drive drum 35787 Socket-Phone input socket 31261 Spring-Retaining spring for ad- justable cord and studs 38761 Support-L.H. pulley support com- plete with pulley 38762 Support-R.H. pulley support complete with 3 pulleys 35588 Transformer-Power transformer -105,120 volts, 25 cycle SPEAKER ASSEMBLIE

23、S (92311-1) 38765 Coil-Field coil -1060 ohms 38766 Cone-Cone complete with voice coil 5039 Plug -4 -prong male plug f o r speaker 38374 Transformer-Output transformer MISCELLANEOUS ASSEMBLIES 35387 Decalcomania - Power - volume decal :37879 Decalcomania-Range switch decal 35391 Decalcomania-Tuning d

24、ecal 35392 Decalcomania-Trade mark decal 38841 Dial-(lass dial scale 35953 Frame-Dial frame complete-less indicator pointer and dial scale. 35954 Indicator-Station selector indica- tor 35814 Knoh-Range switch knob 35650 Knob-Tone control knob 35775 Knob-Tuning or volume control knob 11691 Lamp-Dial

25、lamp 14270 Spring-Retaining spring for knob No. 35650 30900 Spring-Retaining spring for knobs No. 35775 and No. 35814 31 Connect the highSteps side of the test-osc. to- Tune test- ose. to- Range switch Turn radio dial to- Adjust the fol- lowing for max. peak output 1 12C8 I -F grid in series with .0

26、1 mfd. 455 kc A Quiet Point near 180 L3 and L4 2nd I -F Trans. 2 12SA7 1st Det. grid in series with .01 mfd. L1 and L2 1st I -F Trans. 3 Ant, lead in series with300 ohms 11.8 me 25M 138.5 L5 (osc.) C1 (ant.) 4 15.2 me 17 C2 (osc.)* 5 Repeat steps 3 and 4 6 15.2mc 19-13M 156 L6 (inc.)* 7 9.5 me 31M 1

27、58 L7 (osc.)* C3 (ant.) 8 9.5 me B 11.5 C4 (osc.)* 9 Ant. lead in series with 200 mmf. 1,500 kc A 26 C5 (ose.) C6 (ant.) 10 600 kc 150 LS (ose.) (Rock gang) 11 Repeat s eps 9 and 10 * Use minimum capacity peak if two can be obtained. Check image to determine that C2 has been adjusted to the correct

28、peak by tuning receiver to approximately 14.29 me (29) where a weaker signal should,be received. *Peak at minimum position of plunger if two peaks can he obtained. *Peak at minimum capaci y if two peaks can he obtained. NOTE: Oscillator tracks abose signal on all hands. Tube and Trimeter Location Pr

29、ecautionary Lead Dress. - 1. All leads between antenna coils and switch must be as short as possible and kept away from oscillator coil, leads and switches. 2. All oscillator coil leads must be kept apart from each other and other leads and parts. 3. Blue plate lead of 2nd I -F should be dressed und

30、er other leads and against chassis. Calibration Scale Reduced Reproduction of Receiver Dial, and Corresponding 0-180 Calibration Scales 180 170 . 100 90 80 A OD 50 40 30 20 M) O .n On o o is 0 9.8 10.0 10.5 110 11.8 mc . u.n . o or 442 o oan . . . . . . . ,MI C O -O 25 ( o wets 0 O at o 31 12.1. .12

31、5.-130 14.0 ,.15.5 at25 19-13 . no w*a.s 1. MITEn MIO rA 100 150 140 16.0 11.2 ram o 14:r4,11.2 19.5 M MT_ n0liaml 01 0 w 22.5.t 19-13 130 120 uo 100 so 80 70 so 50 40 30 20 PAGE 3i -C QU-2, Q-22, QK-23, Q-25, Q-27 Replacement Parts Insist on genuine factory -tested parts, which are readily identifi

32、ed and may be purchased from authorized dealers STOCK o. DESCRIPTION STOCK DESCRIPTION CHASSIS ASSEMBLIES 14292 Damper-Pickup armature damper Model QU2C (RC -507C) ModelQU2M (RC -507D) 32228 34300 Pickup Unit-Magnet coil, needle screw and armature assembled Screw-No. 6-32 x headless set screw for pi

33、ck- up pivot arm 35622 Bracket-Flywheel and shaft mounting bracket. 3811 Screw-Needle screw 12714 Capacitor-Medium air trimmer (C2, C4, C5). 34654 Capacitor-Mica trimmer-comprising 3 sections (Cl, C3, C6) 35646 Capacitor -6 mmfd. MOTOR ASSEMBLIES 36012 Capacitor -15 mmfd. 31350 Capacitor -18 mmfd. 3

34、4416 Arm-Drive wheel support arm (long) 35644 Capacitor -47 mmfd., ceramic - 34415 Arm-Idler wheel support arm (short) 13141 Capacitor -47 mmfd., moulded 34516 Armature-Motor armature complete 30949 Capacitor -56 mmfd., mica (I -F) 34515 Bushing-Motor mounting rubber bushings. 12723 Capacitor -56 mm

35、fd., moulded 34365 Capacitor -1.25 mfd., 60 cycle motor starting 35645 Capacitor -68 mmfd., ceramic capacitor for motor, Stock No. 34412 13057 Capacitor -68 mmfd., mica 34514 Cover-Bakelite top end shell for motor 30904 Capacitor -100 mmfd., mica (I -F) 34414 Idler-Rubber tire idler or drive wheel 1

36、2720 Capacitor -100 mmfd., moulded 34412 Motor -105-125 volts, 60 cycle phono. motor - 12694 Capacitor -220 mmfd. less pulleys, capacitor and motor cradle 31433 Capacitor -560 mmfd. 34418 Plate-Motor support plate complete with turn - 35643 Capacitor -3,000 mmfd. table bearing 33640 Capacitor-.005 m

37、fd. 14887 Retainer-Idler wheel retainer spring 5148 Capacitor-.007 mfd-(Model QU2C) 34437 Spindle-Turntable spindle 14393 Capacitor-.01 mfd., 1,000 volts 34417 Spring-Idler arm tension spring 4870 Capacitor-.025 mfd. 5196 Capacitor-.035 mfd.-(Model QU2M) ,32787 33014 Capacitor-.05 mfd. Capacitor-Ele

38、ctrolytic comprising 3 sections AUTOMATIC SWITCH ASSEMBLIES of 10mfd. and one section of 20 mfd. 34419 Base -Pickup arm mounting base (Model QU2C) 35632 Coil-Antenna coil-A band 34312 Base-Pickup arm base (Model QU2M) 35631 Coil-Antenna coil-spread band 32865 Bracket-Switch bracket and terminal boar

39、d. 35623 Coil-Oscillator coil-A and B bands 34308 Cam-Switch cam assembly with spring 35624 Coil-Oscillator coil -19-13 meter band 34007 Lever-Switch actuating lever, roller and clip. 35625 Coil-Oscillator coil -25 meter band 34309 Mounting-Pickup arm base mounting (rubber 35626 Coil-Oscillator coil

40、 -31 meter band grommet, washers and nuts) 35619 Condenser-Variable tuning condenser 34311 Ring-Retaining ring for pickup arm pivot shaft 36035 Control-Tone control 14195 Screw-No. 10-32 x 5/16 set screw for switch 35620 Control-Volume control and power switch cam hub 32634 Cord-Drive cord 34314 Sha

41、ft-Pickup arm pivot shaft (Model QU2C). 35642 Dial-Calibrator dial for drive drum 36177 Shaft-Pickup arm pivot shaft (Model QU2M). 35627 Drum-Tuning condenser drive drum-less cali- 34310 Spool-Insulating spool for switch leads 35638 brator Flywheel-Tuning shaft flywheel 32868 Spring-Switch P g-Switc

42、h leverp spring 30868 Plug -2 -contact female plug for motor cable. 32867 spring for switch cam 5040 Plug -4 -contact female plug for speaker cable. 32866 Switch-MercurySpring-Tension tube and leadso 35641 Pulley-Indicator cord pulley 31608 Washer-Retaining washer for switch lever. 30735 Resistor -5

43、60 ohms, 1 watt 30128 Resistor -12,000 ohms, watt 12695 Resistor -15,000 ohms, watt-(Model QU2C) SPEAKER ASSEMBLIES 35595 Resistor -15,000 ohms, 3 watts (RL -70M1) 13998 Resistor -22,000 ohms, watt 12454 Resistor -33,000 ohms, watt 13867 Cap-Dust cap 13715 Resistor -68,000 ohms, watt (Model QU2M) 12

44、079 Coil-Field coil 13734 Resistor -120,000 ohms, watt 11469 Coil-Neutralizing coil 30493 Resistor -150,000 ohms, I. watt 36145 Cone-Cone complete with voice coil 12199 Resistor -270,000 ohms, watt (Model QU2C) 5039 Plug -4 prong male plug for speaker 14983 Resistor -330,000 ohms, watt 14534 Transfo

45、rmer-Output transformer 12285 Resistor -470,000 ohms, I. watt 30848 Resistor -470,000 ohms, .1 watt. 13730 Resistor -1 meg., watt 12679 Resistor -2.2 meg., i watt MISCELLANEOUS ASSEMBLIES 13601 35633 Resistor -10 meg., * watt Shaft-Range switch indicator knob shaft 4288 Cap-Male capfor crystal picku

46、pcable connector rY 35637 Shaft-Tuning shaft -Model QU2C 31364 Socket-Dial lamp socket 33909 Cup-Used needle cup-Model QU2C 31251 Socket-Tube socket 33910 Cup-Needle cup-Model QU2M 13638 Spring-Drive cord spring 36074 Decalcomania-Radio-Phono. decal 31418 Spring-Pointer cord spring 35388 Decalcomani

47、a-Tone switch decal 36036 Switch-Phono. switch 35467 Decalcomania-Trade mark decal 35621 Switch-Range switch 36040 Dial-Glass dial scale 32827 Switch-Voltage change switch 36075 Escutcheon-Dial scale escutcheon-less dial. 35636 Transformer-First I -F transformer-less grid lead and clip 4286 Ferrule-

48、Ferrule and bushing for pickup cable connector-Model QU2C 35628 Transformer-Second I -F transformer 36037 Frame-Dial frame complete-less dial scale and 32852 Transformer-Power transformer -105-120 and pointer 200-240 volts, 50-60 cycle 30698 Hinge-Cabinet lid hinge 36039 Indicator-Station selector indicator 35652 Knob-Band indicator knob 36038 K