RCA-Victor-Co-Inc-QU5 电路原理图.pdf

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1、MODEL QUPAGE INTERMEDIATE FREQUENCY 455 kc POWER SUPPLY RATING 105.125, 200-250 volts, 50-60 cycles, 160 watts TUBE COMPLEMENT (1) RCA-6SA7 1st Detector -Oscillator (2) RCA-6SK7 I -F Amplifier (3) RCA -65Q7 2d Detector, A -F Amplifier, A.V.C. (4) RCA-6AD7G Phase Inverter, Power Output (5) RCA-6F6G P

2、ower Output (6) RCA -6F60 Power Output (7) RCA-6F6G Power Output (8) RCA-5U4G Rectifier Pilot Lamps Mazda No. 55, 6.5 volts 0.4 amp. Mazda No. 51, 7.5 volts 0.2 amp. POWER OUTPUT RATING Undistorted 20 watts Maximum 24 watts LOUDSPEAKERS Model RL70M-4 Electrodynamic 12 inch Model RL -71A-4 Permanent

3、Magnet Dynamic 12 inch Voice Coil Impedance (both) at 400 c.p.s. 2.2 ohms PICKUP TURNTABLE - _ =-I RED Z BRAC - OQC KET/ -, st -a: -L - om- O ANTENNA -GROUND TERMINAL BOARD CHASSIS RED MOTOR BRACKET MOTOR RED HOLDING BOLTS SLIDING SHELF Position of Holding Bolts YELLOW GREEN RED ED-EILK RED RL70M4 S

4、PEAKER PLUG BLACK BLACK D-BRN -ELK.-TO OUTPUT SCREENS E BROWN -TO RECT. FILAMENT BROWN JI CABLE SOCKET FROM CHASSIS RL71A4 SPEAKER PLUG 70 OUTPUT PLATES BLACK CABLE SOCKET FROM RL7OM4. SPEAKER Connections and Colors of Loudspeaker and Cable Chassis No. RC -530 Eight -Tube, Five -Band, A -C, Superhet

5、erodyne Radio -Phonograph REFER TO RP -1115 SERVICE NOTE FOR DATA ON AUTOMATIC MECHANISM Electrical and Mechanical Specifications FREQUENCY RANGES Cabinet Dimensions (inches) Height 34; Width 343/4; Standard Broadcast (A Band). 540-1,720 kc (556-174 m) Depth 19 Medium Wave (B Band) 3.0-9.5 me (100-3

6、1.6 m) Net Weight (pounds) 123 31 Meter Spread Band 9.5.11.7 me (31.6-25.6 m) Chassis Base Dimensions (inches).Height 23/4, Width 151/s, 25 Meter Spread Band 11.7-15.1 me (25.6.19.9 m) Depth 51/4 19-13 Meter Spread Band 15.1-22.5 me (19.9.13.3 m) Over-all Chassis Height 81/z inches Tuning Drive Rati

7、o 25 to 1 Model QU5 PHONOGRAPH Type (RP145E) Automatic Record Capacity Eight 10 -inch or seven 12 -inch Turntable Speed 78 r.p.m. Type Pickup Crystal Pickup Impedance 100,000 ohms at 1,000 cycles Motor Self-starting, constant -speed, induction type. Motorboard and Controls Synchronizing Speakers.-In

8、 order to get correct tone quality from the dual -speakers used in this model, it is essential that the two speakers be so connected that the diaphragms of both work in unison or synchronism. if the terminals of one speaker are reversed the tone of the set will be flat. To test for proper connection

9、s, turn on receiver with volume down and connect the terminals of a 1 -volt dry cell across the voice coil -terminals of either one of the speakers. If the diaphragms move in or out together at the instant of contact, the speaker connections are O.K. If one moves out and the other moves in, they are

10、 buck- ing, and the voice coil leads of one of the speakers should be reversed. The movement of the diaphragms may be observed visually or by placing the finger-tips on each cone to feel the movement. Precautionary Lead Dress. - 1. All leads between antenna soils and switch must be as short as possi

11、ble 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 under other leads and against chassis. RCA VICTOR DIVISION OF RADIO CORPORATION OF AMERICA, CAMDEN N

12、. J., U. S. A. 收音机爱 好者资料库 RadioFans.CN PAGE 90-C QU-5 l I6 Alignment Cathode -Ray Alignment is the preferable method. Connections for the oscillograph are shown in the chassis drawing. Output Meter Alignment.-If this method is used, connect the meter across the voice coil, and turn the receiver volu

13、me control to maximum. Test-Oscillator.-For all alignment operations, connect 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 tutting dial is fastened in the cabinet an

14、d cannot b used for reference during align- ment, therefore a calibration scale 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 gan

15、g 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 180 mark on the drum scale must be vertical, and directly over the center of the gang -condenser shaft when the plates are fully meshed. The drum is

16、 held to the shaft by means of two set screws, which must be tightened securely when the drum is in the correct position. 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

17、top and bottom. Pointer 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 180 mark on the calibra- tion scale when the plates are fully meshed. Dial -Indicator Adjustment. - Aft

18、er fastening the chassis in the cabinet, attach the dial indicator to the drive cable with indicator at the 540 kc mark, 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 spre

19、ad -band ranges is on actual reception of short- wave stations of known frequency, by adjusting the magnetite -core oscillator coil for each band so that these stations come in at the correct points on the dial. RANGE SWITCH e -TUNING VOL. Ic 31159 Arm-Pickup arm complete-less crystal car - tridge,

20、needle screw, and cable Cable-Pickup32635 lift arm cable and clips Cable-Output cable and plug 31148 Escutcheon-Index escutcheon 32556 Model U-125 U-128 U-129 U 130 * 31156 Crystal-Pickup crystal cartridge and needle screw U-132 U-134 33114 Damper-Viscoloid damper for crystal armature 31873 Escutche

21、on-Speed regulator escutcheon 31160 91181 Screw-Pickup needle screw Shaft-Pickup pivot arm and .shaft assembly Model 11QU 12QU Only 33098 Arm-Pickup arm, less crystal and cable 31151 Guide-Pickup lift cable guide (coil spring, 80T 2 -in. large) (2) U -2b. I)-28, -30, U-129 2nQ prod. 31150 Mounting-P

22、ickup arm base rubber mounting complete 31155 Spring-Needle cup lid tension spring 32632 Crystal-Pickup crystal cartridge and needle screw Models U-132 and U-134 Only OPERATING MECHANISM *NOT USED ON ALL TYPES 31134 Bracket-Pickup locating lever mounting bracket SEE SEPARATE LISTING (3) * 31144 Cam-

23、Cam and gear assembly (4) 6808 31148 91129 31118 Clutch-Trip lever friction clutch assembly (5) Coupling-Motor coupling complete with turn- edrive gear, rubber strips, motor coupling, a d drive a Cover-Cap for top of record post Finger-Trip lever frict on finger assembly (7) NOTE: RP -140 REPLACEMEN

24、T PARTS REFER TO MODEL U-46 91119 Gear-Long arm and rack gear for front left- hand record poet (8) PAGE 498C 31120 Gear-Short arm and rack gear for rear right- hand record post (9) PAGE 706-C RP -132, RP -139, RP -040, RP -1145 Replacement Parts RP- 139, RP- 145 SERIES Insist on genuine factory -tes

25、ted parts, which are readily identified and may be purchased horn authorized dealers. STOCK DESCRIPTION STOCK N DESCRIPTION ASSEMBLIES (Model RP -139A) MODEL VA -22 2nd Production: The 2nd production of Model VA -22 uses 32956 Coil-Field coil and laminations for 25 cycle motor mechanism similar to R

26、P -139A and RP -145. For replacement parts, refer to the Service 32955 Coil-Field coil and laminations for 50 cycle motor Data on RP -139A and RP -145 as specified below: 32954 Coil-Field coil and laminations for 60 cycle motor Stock No. 32960 Gear-Motor spindle gear and pin PICKUP AND ARM ASSEMBLIE

27、S 32873 32872 Motor-Motor complete, 25 cycle, 110 volt AC Motor-Motor complete, 50 cycle, 110 volt AC Same as RP -145, except add: P 32871 Motor-Motor complete, 60 cycle, 110 volt AC 33905 Crystal-Pickup crystal cartridge and 30870 Plug -2 -prong male plug-used on motor leads needle screw for 25 -cy

28、cle only. 32959 32958 Spindle-Turntable spindle complete with metal pinion and fibre gear for 25 cycle motor Spindle-Turntable spindle complete with metal pinion and fibre gear for 50 cycle motor Spindle-Turntable OPERATING MECHANISM, MOTOR ASSEMBLIES, MOTORBOARD ASSEMBLIES For 110 -volt, 60 -cycles

29、, same as 32957 spindle complete with metal pinion and fibre gear for 60 cycle motor RP -145. For 110 -volt, 25 -cycles, same as 32875 Switch-Motor control switch (4) RP -139A. MOTOR ASSEMBLIES QU-5 and QU-51C (Model RP -145) OPERATING MECHANISM 36607 Armature-Complete motor armature and shaft 10129

30、 Ball-Steel ball for turntable bearing for 50 cycle motor 33984 Bracket-Record discriminating lever mounting 34513 Armature-Complete armature and shaft for 60 bracket (3) 34512 cycle motor Cap-Bakelite cap for motor 32556 33987 Cable-Pickup arm shielded cable (8) Cam-Cam and drive gear (42) 34365 Ca

31、pacitor -1.25 mfd., for 60 cycle and 50 cycle motor (38) 6808 34369 Clutch-Trip lever clutch (5) Cup-Turntable bearing cup (36) 36114 Motor -105-125 volts, 50 cycle motor complete 34367 Disc-Turntable drive disc and tire (39) 34364 with capacitor (37) Motor -105-125 volts, 60 cycle complete with 311

32、16 32879 Finger-Trip lever friction finger (7) Gear-Long arm and rack gear (41) capacitor (37) 32880 Gear-Short arm and rack gear (40) MOTORBOARD ASSEMBLIES 31121 34368 Gear-Record separator shaft gear (10) Grommet-Rubber grommet for motor mounting (48) QU-5 and QU-51c 31151 Guide-Lift cable guide s

33、pring (2) 33982 Guide-Main spring guide (11) 33998 Base-Pickup arm mounting base 34370 Idler-Turntable idler wheel and arm (39). 35847 Bearing-Turntable bearing (36) 34000 Lever-Index lever (12) 36112 Board-Motorboard complete with bearings and 31138 Lever-Locating lever and pawl (14) post-less oper

34、ating mechanism 33985 Lever-Main lever (15) 33999 Cup-Used needle cup, lid, and pickup arm rest 34007 Lever-Mercury switch actuating lever (51) (6) 34002 Lever -10 inch and 12 inch record discriminat- 33997 Escutcheon-Index escutcheon ing lever (17) , 31150 Mounting-Pickup arm base rubber mounting 3

35、1140 Lever-Pickup lift cable lever and spring (16) complete 31130 Lever-Record separator elevating lever with 31155 Spring-Used needle cup lid spring adjustment screws (18) 31132 Lever-Trip detaining lever (19). MOTORBOARD ASSEMBLIES 36115 Lever-Trip lever and cam complete (20). VA -22 (1st Prod. an

36、d 1 U-iy 9 31131 34086 Lever-Trip regulator lever (21) Link-Index lever setting link and button 31149 Base-Tone ar mounting base m 34004 Link-Roller index link 32876 Board-Motorboard complete with all riveted and 31137 Pawl-Index lever pawl (13) welded posts and brackets - less operating 31133 Pawl-

37、Trip pawl assembly (22) mechanisms 31535 Pin-Drive pin for turntable drive disc (24). 14209 Bumper-Main lever rubber bumper (1) 31124 Pin-Pin to fasten gear on record separator shaft 9848 32877 Cup-Used needle cup, rest, and lid complete Escutcheon-Index escutcheon (2331118 Screw-Cone pointed set sc

38、rew for record sepa - 31151 Guide-Pickup lift cable guide (coil spring, 80T rator shelf (H and D) 2 -in. large) (2) 33983 Screw-Record separator elevating lever pivot 31150 Mounting-Pickup arm base rubber mounting screw complete 31117 Screw-Special to adjust friction clutch (B). 31155 Spring-Needle

39、cup lid tension spring 34001 Screw-Record separator elevating lever ball point screw (G) MOTORBOARD ASSEMBLIES 33990 Separator-Record separator knife (25) (Model RP -139A) 33988 33989 Shaft-Record separator shaft (34) Shelf-Record separator shelf (27) 33981 33978 33909 Base-Pickup arm mounting base

40、Board-Motorboard complete with bearings and posts less operating mechanism Cup -Used needle cup, lid, and pickup arm rest (6) 3676 33666 2438 32882 32882 Spring-Cam gear pawl spring Spring-Index lever pawl spring (30) cable Spring-Lift(31) spring er springg(35) Spring-Locating lever Spring-Main leve

41、r tension spring spring(43) 33979 Escutcheon-Index escutcheon 34878 Spring-Pickup arm starting spring (26) 31150 Mounting-Pickup arm base rubber mounting 14190 Spring-Record levere disca sprinating lever(8 pawl spring or locating pawl spring (28) complete 33994 Spring-Record discriminating lever spr

42、ing (flat) 31155 Spring-Used needle cup lid spring (49) (9) 14191 Spring-Trip detaining lever spring (33) MOTORBOARD ASSEMBLIES 3437.2 Spring-Turntable idler wheel spring (47) (Model RP -145) 34371 Support-Turntable drive and motor support (N) 33981 Base-Pickup arm mounting base 32866 Switch-Mercury

43、 tube with leads (50) (S7). 34363 Board-Motorboard complete with bearings and 34875 Switch-Pickup shorting switch (44) posts-less operating mechanisms 36113 Turntable-Turntable and spindle shaft (32) . . 33909 Cup-Used cup, lid, and pickup arm rest (6). 34373 Washer-C washer for mounting idler wheel

44、 33979 Escutcheon-Index escutcheon and arm 31150 Mounting-Pickup arm base rubber mounting complete VA -22 and U -12j 31155 Spring-Used needle cup lid spring (49) OPERATING MECHANISM 32875 Switch-Motor switch (4) 31134 Bracket - Pickup locating lever mounting bracket (3) 32878 Cam-Cam and drive gear

45、(42) 6808 Clutch-Trip lever friction clutch assembly (5) . 31129 Cover-Cap for top of record post 707-C RP -I32, RP -I39, RP -I40, RP -I45 Keplacement Harts (Continued) RP -139, RP -14 5 ST1OoCK DESCRIPTION STOCK DESCRIPTION 32883 Damper-Motor spindle rubber drive sleeve and metal damper plate 14195

46、 Screw-No. 1u-32 cone pointed set screw tor trip lever hub (D) 31116 Finger-Trip lever friction finger assembly (7) . 33983 Screw-Record separator elevating lever pivot 32879 Gear-Rack gear for front left-hand record post screw (41) 31117 Screw-Special to adjust friction clutch 32880 Gear-Rack gear

47、for rear right-hand record post 33990 Separator-Record separator knife (25) (40) 33988 Shaft-Record separator shaft (34) 31121 Gear-Record post gear (10) 33989 Shelf-Record separator shelf (27) 31123 Guide-Main lever spring guide (11) 3676 Spring-Cam gear pawl spring 31114 Lever-Index lever assembly

48、 (12) 31136 Spring-Index lever pawl spring (30). 31137 Lever-Index lever tension spring lever (13) 3666 Spring-Lift cable spring (31) 31138 Lever-Locating lever and pawl assembly (14). 32436 Spring-Locating lever spring (35) 31113 Lever-Main lever assembly (15) 32882 Spring-Main lever tension spring (43) 31140 Lever-Pickup lift cable lever and spring assem- 34876 Spring-Pickup arm starting spring (26) bly (16) 14190 Spring-Record discriminating lever pawl spring 31135 Lever-Pickup locating lever assembly (17) or locating lever pawl sprin