RCA-Victor-Co-Inc-5Q5 电路原理图.pdf

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1、MANUAL OF 1940 MOST POPULAR SERVICE DIAGRAMS MODELS 5Q5, 5055, 5Q56 and 6Q7 PSTOmE control U5E0 ON (207 ONLV OUTPUT CATHODE CURRENTS n)4f)07 0.78 II (A) 6 Ffib-G j,? (jo a TOTAL RECTIFIED BCURPENT= 57MA C -j it? I if* I O GSQ7 TVW-f 2DET. AFsAVC. - W * OSClLLO5RAPH CONNECTIONS ! 10 -inch or 12 -inch

2、 records Motor. Self-starting, constant speed induction CRYSTAL PICKUP 6QU 200-250 volts, 60 cycles, 100 watts Rating C5 - 105.125 ; 200-250 volts, 50 cycles, 100 watts POWER SUPPLY RATINGS U 50 Rating A. 105-125 volts, 50-60 cycles, 105 watts LOUDSPEAKER (84609-1) Type 8 -inch electrodynamic Voice

3、Coil Impedance. 3.3 ohms at 400 cycles 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 Alignment Procedure Cathode -Ray Alignment is the preferable method. Connections for the oscillograph are shown in the chassis drawing. Output Meter Alignment. -

4、 If this method is used, connect the meter across the voice coil, and turn the receiver volume control to maximum. Test-Oscillator.-For all alignment operations, connect the low side of the test -oscillator to the ground terminal, and keep the output as low as possible to avoid a -v -c action. Calib

5、ration Scale on Indicator -Drive -Cord Drum.-The tuning dial is fastened in the cabinet and cannot be used for reference during alignment, therefore a calibration scale is attached to the rear of the drum which is mounted on the shaft of the gang condenser. The set- ting of the gang condenser is rea

6、d 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 table. As the first step in r -f alignment, check the position of the drum. The 45 degree mark on the drum scale (see Drum Drive and Indi- cator Cord

7、Assembly drawings) must be in a horizontal position when the plates are fully meshed. The distance from the edge of the chassis to the drum must not exceed i -inch. The drum is held to the shaft by means of a set screw, which must be tightened securely when the drum is in the correct position. Point

8、er for Calibration Scale.-Improvise a pointer for the calibra- tion scale by fastening a piece of wire to the gang -condenser frame, and bend the wire so that it points to the 0 mark on the calibration scale when the plates are fully meshed. Dial -Indicator Adjustment.-After fastening the chassis in

9、 the cabi- net, attach the dial indicator to the drive cable with indicator at the 530 kc mark, and gang condenser fully meshed. The indicator has a spring clip for attachment to the cable. For additional details, refer to booklet RCA Victor Receiver Alignment. Steps Connect the- high side of test-o

10、sc. to- Tune test-osc. to- Turn radio dial to- Adjust the fol - lowing for max. peak output 1 617 I -F grid cap, in series with .01 odd. 455 kc A Band quiet point between 550-750 kc L10 and L11 (2nd I.F. trans.) 2 Tuning condenser stator (osc.) in series with .01 mfd. s 455 kc L8 and L9 (1st I.F. tr

11、ans.) 3 Antenna lead (blue) in series with 200 mmfd. 600 kc 600 kc (33) A Band L71 - 4 1,500 kc 1,500 kc (152.4) A Band C2 (ant.) CS (osc.) 5 Repeat steps 3 and 4 8 Antenna lead (blue) in series with 400 ohms 20 me 20 me (155.4) C Band C5 (osc.) C26 (ant.) 7 8 me 8 me (149) B Band C6 (osc.) C27 (ant

12、.) 8 Antenna lead (blue) in series with 200 ntmf. 1,500 kc 1,500 kc (152.4) A Band C8 (osc.) * Use minimum capaci y peak if two peaks can be obtained. t Rock gang condenser slightly while adjusting L7. * Make test -oscillator connection to lug on tuning condenser stator (oscillator section) in serie

13、s with .01 mfd. condenser. Note.-Oscillator tracks 455 kc above signal on all bands. 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 l80 LA MT HONG ,G_RlG_ROT MOM- 10,O-m.O.G.tONDON-SMEM. MIN _,O.AI M.O ITT TI - G, M M. M. w . G. - ,O*-: .w M.uu 40m -_.,.A 31ml0400.4 KNIT MT.25m n1 .19

14、m 1T111.1T111.16m 13m F 1 8 9 10 12 14 16 18 20 22 MC 3 B POLICE 120m 100m 2.3 2.5 2.7 3.0 5m 60m 50m 3.5 4.0 5.0 6.0 1.0 Mc 2 550m 500m 450m 400m 350m 300m 250m 200m POLICE A 550 600 100 401)g12y19Q11)0.c 1 . . . . . . E. . . .E.E.,.E.E. . . 0 10 20 30 40 50 60 70 80 90 100 HO 120 130 140 150 160 1

15、70 180 911111111141 C 5 TUNING 05C.- 20MC INDICATOR PAGE 63-C 5Q5, 5Q55, 5Q56, 6QU, 6Q7, Q -I8, U-50 Calibration Scale Reduced Reproduction of Receiver Dial, and Corresponding 0-180 Calibration Scales The corresponding position of the dial indicator for any setting of the calibra- tion scale can be

16、determined by drawing a line from this point on the bottom calibration scale to the same point on the top calibration scale. For example: 33 on the calibration scale corresponds to approximately 7.9 me on C band, and 600 kc on A band, etc. Read in- structions under Alignment Procedure. OSCC1500KCy3

17、L 455 CADJ. T C 2 II1 05C 6MC. 150( KC L 9 -SEC. ADJ. 455 KC C27 -ANT 6.0 MC C26 -ANT 20 MC L 7 -05C. KC I. F. 6U5/6G5 VC 2AND A.F. RECT. 110V -220V SW. 220V(110)110V. (ON RECEIVERS OF C RATING ONLY SN -931 Tube and Trimmer Locations PULLEY INDICATOR DRIVE CORD IN REAR GROOVE OF DRUM DRUM PUL LEY, K

18、NOB SHAFT f PULLEY RC x PULLEY DRUM DRIVE CORD IN FRONT GROOVE OP DRUM Arrangement of Drive Cords for Tuning Condenser and Dial Indicator (Models 5Q5, 5Q.55 and 5Q56 -O5C 4C11 54- 110V 220v. 110-220 VOLT CHANGE -OVER SWITCH USED ONLY ON RECEIVERS WITH -C. POWER RATING. OSC ILLOGRAPhi CONNECTIONS VER

19、TICAL HITO TM S. TERM. VERTICAL OTO CHASSIS ALL HEATERS G.3V.AC., EXCEPT 5Y36, S.OVAC. C 6 C27 ANT:20MC ANT-6MC. RC -I SOU SN -541 BOTTOM VIEW - REAR OF CHASSIS R -F Wiring Diagram and Socket Voltages Measurements made to chassis unless otherwise indicated, with set *NOTE: Values with star (*) are o

20、perating voltages in circuits tuned to quiet point and volume control at minimum. Values should with high series resistance. The actual measured voltages will be hold within 20% with 117 -volt a -c supply. lower, depending on the voltmeter loading. Plate voltages and currents of U-50 are 5% higher.

21、ANT. COILS cu 65A7 OT SET. -OSC Cl/ C2 190 x 20 MMF MNF RWA!NGi 3SI.WITCH NOWN EOIJNTERC IBS% VIEWED FROM F11O Ir B A PRI LS LI OSC COILS I- C7 3200 5-50 MMf . ems I 9 , MMF CS , 5-50 MME 80310M VIEW OF TUOE 5044225 Ot ;,i, I 0.1 MID J -,e, Z91.;4-,- - (i7:2lniv 5O7 fIELO 4J: lJ T 3. Nls Si 1 En-uo

22、TR 5,.(3-GEttpUsVoVo II2 REGT 6K7 6501 I. E 2M DET, A.F ft A.V.0 VOLUME CONTROL RG 1 MES. 81 10000 MODELS 50.5 5Q55 5056 6Q7 90 ANT. MF. MOF. MP1F. - B lall DARK SWITCH vIEMED FROM SKIS (wUMw J COU TED C -C Komi 111 OCWICC . c2 A PRI 2-20 FOB 33,000 BOTTOM VIEW OF TUBE SOCKETS 1/2 LS TRANS. 6K7 IF A

23、 r r tt+oM s; 1 1; MMF. - Mrrt ea an C LB L9 C10 1 442:1 SO REAR 13j9D L5 OSC. COILS CO 5-50 MMF A 34 Iicks C6 5 -SO MMF I sso MMF. CB M50 MF. 56 MME. D .APW pi 511.1E5. MED. E R3 P-VVVV- C17 12,000 65Q- 4F$ArC 3 .1. 8 I MMF. 4700,T0W VOLUME 1 CONTROL_ IMGTOTAL ch-Hi R I , fD. iT 3 s2f0000-, iIR). H

24、N 6F6 -G OUTPUT C25 20 RFD RIO - TO C20 iO4FD 500000 C 29 .005 EO R 10 MEG. TONE CONTROL TI -d IM i. y GREEN -RED TR. 5Y3 -G RECT. (L ao BR04M- 8g0.KK 0 IO Y FIELD CEO l 0 MFD T 4l I O II I o 5$ 5 II I ,1/4_4. BLUE TO ALL HEATERS EDIAL LAMP 9 TMP, -TD HEATER END. ON 612, TUBE 34 0 0 MODEL 6QU C32 01

25、8 MIR CS3 .54 RAMA 1,10110 3W R13 10.100 KO Schematic Circuit Diagram Radio -phono. switch changed in 2nd Prod. - see following page. ANT. COILS C26 240 65A 7 IDET. -OSC. L2 312 Cl .1 13-490 - MMF. BIFE 52 MONT RANDE SWIKH VIEWED Tow FROM PaDKT AKD 311OR11 - ERLIKE 1W1D.(WYIMUA ANTUNK uvrilON.wle) O

26、S,/4 TUMINf9 WO 4:11 0 6547 I DST. -OSC C4 F APR. R2 33,000 R IT 10 CIO 6000 5- 53 REAR 13-490 MME. 05C. COILS L5 LB B CO 3.50 MAT. 5-30 1.511 330000 Li A _ SGO 3A - MMF. 5-5 Ce 0 6 BOTTOM VIEW OF TUBE SOCKETS TP ANS. r r COoM C12 a C113 n0 MME e en LB L9 4 C D l 6K7 I. F. 2 CI7 O.I MFD. 65Q7 2aDET

27、AF.(A.VC. 2521E TRANS r l- M C14 CNIIE MF. 12AO Izn MIAF. D L 1 LII CIE 00 RS .A MMF 47,000 VOLUME CONTROL RG - 1 MEG.TOTAL C31 015 D. 28 4700,0000 - C 2 I RIO 0 . T. 270 DSieTion SS GFG -G OUTPUT C25 Fzo nrn RIO - 470 C20 4 i10FD -1 C29 .005 3 MFD IO MEE. GRELF-+-RED TR. 5Y3 -G . .- RECT. BROWN lo,

28、 FIELD C23 Ct4 0 0 MFD. MFD. I BLUE TO ALL HEATERS 4 DM. LAMP TO HLAIER 650.05 GKiTUSE MODEi. U-50 T-BRTT 11-5 egj, RAD55544IO-PICHHOND. WI 34 22000 COO Z MFD. 1 SE A PCCUP T1 TO C 30 005 PIED C 22 L14 L13 HUM NEUT COIL C30 i5 L14 LO HINZ NEVI COIL Schematic Circuit Diagram PAGE 66-C 5Q5, 5Q55, 5Q56

29、, 6QU, 6Q7, Q -I8, U-50 Phonograph Mechanism: The phonograph motor is a self-starting, constant -speed induction type. It should be lubricated every six months by applying a few drops of light machine oil to the spindle bearing and oil hole. The motor spindle is tapered, and a conical rubber piece f

30、its snugly on the spindle. The hole in the turntable bushing is tapered to fit the rubber. This provides an excellent self -centering floating mounting. A metal washer is placed on the spindle under the rubber piece. The washer has ears on the under side which fit over a pin that projects through th

31、e spindle. The motor switch is automatic for both starting and stopping, and when properly adjusted, will turn the motor on as the pickup is moved from the pickup rest toward the turntable. The switch should be adjusted so that it will snap into the off position when the pickup needle is 11 inches f

32、rom the center line of the spindle MODEL 5Q5 MODEL Q18 With Tone Control: The 2nd production of Model SQ5 uses chas- sis No. RC -477 and has a .5 meg. tone control. The tone control is connected in place of the output -tube grid resistor (R9), with a .005 mid. capacitor connected from the arm of the

33、 tone control to the 1st -audio plate. For service data and replacement parts on RC -477, refer to the Service Data for the 1st - production Model 5Q5 (RC -396), and the fol- lowing parts: Stock No. 34146 Control-Tone control, .5 meg 4838 Capacitor-.005 mid. MODEL 6QU 2nd Production: The radio -phon

34、o switching circuit is changed :Is shown in the accompanying diagram. Also, 111:1 and C22 are removed from the output plate circuit, and C30 (.005 mfd.) is con- nected from plate to cathode on the output tube The following parts are used In the revised circuit : Stock No. 12725 Capacitor -1541 mmfd.

35、 (C35) :10303 Capacitor-.0035 mfd. (C36) :10963 Resistor -820,000 ohms, i -watt (R16) 12286 Resistor -56,000 ohms, i -watt (R17) 14983 Resistor -330,000 ohms, i -watt (R18) :12743 Switch-Radio-phono switch Ra 56 PHONO -RADIO SWITC H TO PICKUP Radio -Phono Switching Circuit Used in 2nd -Production of

36、 Model 6QU. Miscellaneous Service Data shaft. The motor may be shut off at any time by placing the pickup on the pickup rest. Power -Line Antenna: At the back of the motorboard is a terminal board for antenna and ground connections. When it is desired to use the power line antenna, a jumper should b

37、e placed across the two outside binding - posts, thus connecting the antenna input of the receiver through a capacitor to the power line. The center binding -post is for the ground connection. When an external antenna is used, it should be connected to the post marked ANT. Precautionary Lead Dress 1

38、. Lead from 2nd I.F. (E) to volume control should be kept close to chassis. 2. R.F. coil leads should be kept short and away from coil. 3. Leads to 6,000 mmf. (C10) should be as short as possible and condenser dressed away from chassis, bearing against 10 ohm (R12) resistor. This model uses Chassis

39、No. RC -477, which is identical to the chassis used on 2nd Produc- tion Model 5Q5 except for the following parts: Stock No. Description CHASSIS ASSEMBLIES (RC -477) 32068 Transformer -First transformer 32825 Transformer - Second transformer I.F. I.F. SPEAKER ASSEMBLIES (RL -78.2) 35440 Cone-Speaker

40、cone, voice coil, center suspension, and dust cap 35387 37616 35392 32837 34221 32847 37614 37613 37615 34491 MISCELLANEOUS ASSEMBLIES Decalcomania-Power switch decal Decalcomania-Range decal Decalcomania-Trade mark decal Dial-Class dial scale Frame-Dial frame complete -less dial, indicator, and ind

41、icator guide shafts Indicator-Station selector in- dicator and carriage Knob-Range switch knob Knob-Tone control or tun- ing knob Knob-Volume control knob Shaft-Indicator carriage guide shaft. PRIMARIES CONNECTED IN PARALLEL FOR OPERATION ON 110 VOLT SUPPLY MODEL U-50 Increasing Victrola Gain: The o

42、ver-all amplification of these models, when used as Victrqlas, is limited by the volt- age divider circuit comprised of a resistor in series with, and a capacitor across the pickup circuit. Values of these components are estab- lished on the basis of: (a) Average available voltage output from pickup

43、 under average climatic conditions. (b) Degree of rumble likely with given am- plification. (c) Danger of microphonic howl with high amplification. (d) Possible consumer reaction to overload oc- curring at a low volume control setting with heavily cut records. If these points are kept in mind, addit

44、ional gain may be obtained, wherever desired, by de- creasing the value of the pickup shunt- capaci- tor; C-1 in Model 0-50 and C-32 in Model U-50. The substitute capacitor should be ap- proximately to ; the value of the original. 13 SN-e6T-O VOICE COIL NEUT. COIL FIELD /off-BLACK PLATE 6F6-6 BLACK-

45、BnowN- SCREEN 6F6-6 BROWN FIL. 5Y3 -G Connections and Colors of Speaker and Cable PRIMARIES CONNECTED IN SERI S FOR OPERATION ON 220 VOLT SU LY Primary No. 1 13 ohms D -C Resistance 3 Primary No. 2 15 ohms H. V. Secondary (Total) 500 ohms Connections of Universal Power Transformer Primary for 220 an

46、d 110 Volts PAGE 67-C 5Q5, 5Q55, 5Q56, 6QU, 6Q7, Q-$8, U-50 R LEV SPANS 4CTUATINQ LEVER SHELLAC CAM SET SCREW SPOOK- CLIP MERCURY TUBE AUMUARY CAM MAIN CAM CAM SVRyC Switch Mechanism (Shown with pickup in rest position) Replacement Parts Insist on genuine factory -tested parts, which are readily ide

47、ntified and may be purchased from authorized dealers. OIL HERE RUBBER SPINDLE PIECE 6n-qBT Phonograph Motor STOCK No. DESCRIPTION STOCK No. DESCRIPTION CHASSIS ASSEMBLIES 32910 Transformer -Power transformer -105-120 volts, 25-60 cycles (T1) 32832 Bracket -Drive bracket, pulleys, and tuning knob shaft complete (Models 5Q5, 5Q55 and 5Q56) Cable 32911 Transformer -Power transformer -105-120 volts, 50-60 cycles (T1) 32635 32852 Transformer -Power transformer -105-120 and 200-240 volts, 50-60 cycles (T1) -Pointer drive cable (M