RCA-Victor-Co-Inc-U-30 电路原理图.pdf

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1、PAGE 444-C MODELS U-30 U-126 U-128 U-129 and 910KG Chassis Ten -Tube, No. RC-335KR, RC -335D RC -335K RC -335F Three -Band, Electric Tuning, A -C, Radio and Vi ctrolas Electrical Specifications FREQUENCY RANGES R -F ALIGNMENT FREQUENCIES Standard Broadcast (A) 540.1,720 kc Band C 20,000 kc (osc., an

2、t.) Medium Wave (B) 2,300-7,000 kc Band B 6,100 kc (ose.) Short Wave (C) 7,000-22,000 kc Band A 600 kc (osc.), 1,500 kc (osc., ant.) INTERMEDIATE FREQUENCY 455 kc RCA TUBE COMPLEMENT ( 1) RCA -6A8 First Det. (5) RCA -6F5 First Audio ( 8 1 RCA -6F6 Power Output ( 2 ) RCA -6J7. . Oscillator ( 6) RCA -

3、6F5. Phase Inverter ( 9 ) RCA5U4G or 5T4. Rectifier ( RCA -6K7 1F Amp. (4) RCA -6116. 2nd Det and A.V.C. (7 ) RCA -6F6 Power Output (10) RCA -6U5 Magic Eye POWER SUPPLY RATING-MODELS U-126, U-128, U-30, U-129 Radio Only Total A 105.125 volts, 50-60 cycles, 120 watts 145 watts A-6 105.125 volts, 60 c

4、ycles, 120 watts 145 watts B-2 105.125 volts, 25 cycles, 120 watts 145 watts C 105.130/140460/200.250 volts, 50-60 cycles, 120 watts 145 watts C-6 105.130/140.160/200.250 volts, 60 cycles, 120 watts 145 watts POWER SUPPLY RATING-MODEL 910KG A 105-125 B 105-125 C 105-130/140-160/200-250 POWER OUTPUT

5、LOUDSPEAKER Undistorted 10 watts Type Maximum 12 watts Voice Coil Impedance PHONOGRAPH MODEL U-126 Type Manual Record Capacity one 10inch or one 12 -inch Turntable Speed 78 R.P.M. (Adjustable) Type Pickup Crystal Pickup Impedance - 80,000 ohms at 1,000 cycles C volts, 50.60 cycles, 125 watts volts,

6、25 cycles, 125 watts volts, 50.60 cycles, 125 watts 12inch Electrodynamic 2.2 ohms at 400 cycles MODEL U-128, U-30, U-129 Automatic-Manual Seven ten or twelve inch 78 R.P.M. (Adjustable) Crystal 80,000 ohms at 1,000 cycles InnnnnnlminnlmilnninilnnlnnlmInnlnnlnnnnlmilnnlnnnnlnnlnnlnnlmilnnlnnlnnlnnln

7、nlnnlnnnnlnnlnnlnnlunlill 0 IO 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 SNORT WAVE LONDON-SCNENY-M4.-SOMI RERUN- TOKYO - MTTSYOII BAUM- MTSSSVN-WFNOS A. RERUN -LONDON HAVANA-ORO-191191-SYDNEY-MAORIO LONDON - SOME - PARIS L(NDON-PARIS-SCUMMY NEW YORE MD- MNwum- SPRINORILD - 31M MEI

8、N 23M MoscoW MITE 19M 16M 7 8 9 10 NEW TORE LONDON-NTTSMRGM 13M A 12 14 16 STANDARD BROADCAST 55 60 I 70 80 18 20 22 MC C POLICE 100 120 140 160 A B 2-3 2;5 3.0 POLICE MEDIUM WAVE AIRCRAFT /C0 5;0 6.0 7.0 MC AMATEUR 62 M AIRCRAFT COIOWIA Is. AMAKA) 49M - ONONNAY - MTTSNIBON BOGOTA - RERUN -CMCAGO -

9、NEW TOSE MA. QTY-NAVANA-TORONTO-CAIACA$ 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 -Tuning Dial, and Corresponding 0-180 Calibration Scale INDICATOR DRIVE CORD 31281 TUNING KNOB SHAFT PULLEY 31271 3 TURNS SPRING 31279 ON/DENIER DRUM DRIVE CORD 31283 N FRONT GROOVE BAND -SWITCH

10、OF DRUM.) SHAFT PULLEY 31272 1 INDICATOR- STRIP (TUNING CONDENSER IN FULL MESH POSITION) CORP 31278 BAND INDICATOR DRIVE CORD Dial Mechanism Universal Power Transformer Connections. (110 -volt supply for a Vic - trola Attachment may be ob- tained by connecting the mo- tor to the red and the red, bla

11、ck leads.) RED TO POWER SUPPLY -BLACK RED- REDTR_ BLACK 121 TOTAL BLAt RED - BLACK (TAPED) NOTE. INSERT CONNECTOR BETWEEN COMMON CONTACT (CENTER) AND CONTACT CORRESPON DI NO TO PREVAILING POWER SUPPLY RATING. UNIVERSAL TRANS. CONNECTIONS T B GREEN - RECT. FIL. GREEN BROWM- RECT. PLATE 240n BLACK -BR

12、OWN BROWN- BLU E AMP FIL. BLUE TEL LO YELLOW REFER TO INDEX FOR DATA ON ELECTRIC TUNING AND AUTOMATIC RECORD CHANGER BLACK - 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 RCA Victor Master Antenna Kit.-Connect the twisted - pair transmission line

13、 to terminals Al and A2 on the terminal board at rear of chassis. Connect the counter -poise to A3. Terminal G may be connected to ground, but this connection is nod necessary for correct operation. Noise -Reducing Adjustment.-After the RCA Victor Mas- ter Antenna Kit is connected to the receiver, t

14、une the re- ceiver to a point near 900 kc where no station is heard. Turn volume control clockwise until noise is heard. If no noise of a regular character is audible, start any brush -type motor - driven appliance, such as a vacuum cleaner, electric razor, refrigerator, etc., but do not bring it to

15、o near the receiver. This will generate noise as a continuous crackling, or buzz. Adjust C5, which is mounted behind the antenna terminal MODELS U-126, U-128 Dial Drive Cord Tension: Additional tension is required on the drive cord when slippage or irregular tuning action is experienced on these mod

16、els. The proper remedy is to fasten a spring Stock No. 31418 to the end of the cord which is normally fixed solid to the drum, and anchor its other end to the same lug occupied by the other No. 31418 spring. Refer to service note dial drive illus- trations. MODEL 910KG Dial Light Diffusion Screen: W

17、here warpage of the light diffusion screen tends to.obstruct movement of the dial pointer, it is usually possible to bend the pointer out- ward so that clearance is obtained. It is also possible to reduce the warpage by leaving the set in a reasonably dry place for several days. Should replacement o

18、f the screen be necessary, it may be ordered as Stock No. 32083-Dial Color Screen and Frame Assembled, less pointer carriage and rods. This part supersedes Stock No. 31308. PAVE 445-C U-30, U-I26, U-I28, U-I29, 910KG E - Model U-126 Manual Victrola E - Model U-128 Automatic Victrola Model 910KG boar

19、d, to a point where this noise is reduced to a minimum. Adjustment of the noise reducing trimmer C5 should be made in the customers home, with the RCA Victor Master Antenna connected to the receiver. This adjustment is effective only when the RCA Victor Master Antenna is used. For all other types of

20、 antenna, the noise -adjustment trimmer C5 should be screwed all the way down. Other Antennas.-Use terminals Al and A3 on the re- ceiver terminal board as antenna and ground connecting points respectively. Terminal A3 may be connected to ter- minal G, unless this causes interference, in which case t

21、his connection should be omitted. MODELS U-126, U-128, 910KG I. F. Transformer ModiAcation: Later production instruments include I -F transformers having circuit and connection arrangements as shown. These transformers have a bakelite top closure as contrasted to the original completely closed metal

22、 shield. The st I -F is stamped No. 76456-8 and the 2nd is stamped 76456-3. For replacement purposes, these units are mechanically interchangeable with the original transformers. Connections are, however, different and details are provided in the accompanying diagram. Note.-R-4, R-5 and C-15 (C18 in

23、 911K) are included in the second I -F assembly, and must be removed from the external circuit. A PRI. SEC. CROP) A B tz QQ c13 C IST I -F E D F D 2ND. I -F C R4 SCHEMATIC TERMINAL SCHEMATIC STOCK 32068 ARRANGEMENT STOCK 14283 F PRI. SEC. - A Rs E 911K 1ST I -F TRANS. A-To plate 1st detector C-To +B

24、 high voltage C (top).-To 6K7 I -F grid E-To AVC circuit 2ND I -F TRANS. F-To plate 6K7 I -F stage D-To +B high voltage B-To diode plate 2nd det. E-To capacitor C-17 (C19 in 911K) C-To R-3, 2.2 meg. resistor A-To chassis ground Replacements Stock No. 32068 First I -F Transformer 14283 Second I -F Tr

25、ansformer Components of No. 32068 and No. 14283 14262 Capacitor -109 mmfd. (C11 -C12) 12404 Capacitor -120 mmfd. (C13 - C14) 14712 Capacitor -180 tumid. (C15) (C18 in 911K) 11398 Resistor -220,000 ohms (R5). 14284 Resistor -22,000 ohms (R4) 收音机爱 好者资料库 RadioFans.CN PAGE 446-C U-30, U -I26, U -I28, U

26、-I29, 910KG TUNING TUBE - 1. Make a list of the desired eight stations, arranged in order from low to high frequencies. S %I MAGIC EYE l 111111I11U a a ! T e ALIGNMENT PROCEDURE Cathode -Ray Alignment is the preferable method. Connec- tions for the oscillograph are shown in the chassis drawing. Outp

27、ut Meter. Alignment.-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 receiver chassis, and keep the output as low as possible to avoi

28、d a -v -c action. Calibration Scale on Indicator -Drive -Cord Drum.-The tun- ing dial is fastened in the cabinet and cannot be used for ref- erence during alignment, therefore a calibration scale is at- tached to the rear of the indicator -drive -cord drum which is mounted on the front shaft of the

29、gang condenser. The set- ting of the gang condenser is read on this scale, which is calibrated in degrees. The correct setting of the gang in de- grees, for each alignment frequency, is given in the align- ment table. Pointer for Calibration Scale.-Improvise a pointer for the calibration scale by fa

30、stening a piece of wire to the gang - condenser frame, and bend the wire so that it points to the UT.OSC. 60OKC C29 SSC I500KC 4 * y OSC C25.O5CI- 6100KC A C24-OSC.1 - 20,000KC Cwatt Resistor -100.000 ohms, watt (R35) 31470 Suspension-Motorboard suspension spring, screw, 12264 Resistor -220,000 ohms

31、, watt (R5, R36) and Iorkwasher, 4 required 11398 Resistor -220,000 ohms, 1.10 watt (R14). ANTENNA ASSEMBLIES 11453 Resistor -270,000 ohms, 1 10 watt (R16, R29) 11452 Resistor -470,000 ohms, 1: 10 watt (R1) 3142(i Counterpoise Line-Additional length 60 ft. long 12285 Resistor -470,000 ohms, ; watt (

32、RB) 12426 Insulator-Strain and counterpoise insulator. 12013 Resislpr-1 meg., 1, 10 watt (R7, R2G, R40) 9816 Transmission Line-Additional length 60 ft. long PAGE 698-C AUTOMATIC RECORD CHANGERS TYPE NO. RP -I32, RP -139, RP -1I0 and RP -1)45 Type RP -132 or Stock No. 9844. Uses a governor type motor

33、. Models 11QU and 12QU have a lever type speed control. Type RP -132 does not have pickup muting switch. Type RP -139 Uses an induction motor (not governor type). The turntable is driven thru a worm gear in the motor housing. Type RP -14o Uses agovernor type motor, has flat type pickup locating leve

34、r spring 9M like RP -139. Type RP -145 Uses a capacitor induction motor. The turntable is driven thru a friction drive disc mounted on the turntable spindle. Variations of each type denoted by a suffix letter such as RP -139A, RP -145E, etc. indicate variations in tone arm style, motor switch, etc.

35、Models QU-5, U-46 and QU-51 use a mercury switch to shut off the motor when. the pickup is on its rest. RP vs. MODEL NUMBERS QU-5 RP -145E 11-30 RP -132M U-123 RP -139B 11QU RP -132A U -4o RP -139A U-125 RP -132C 12QU RP -132A U-42 RP -145 U-128 RP -132 VA -22 RP -139D U-43 RP -145 U-129 RP -132C VA

36、 -22 RP -145C U-44 RP -145 U-129 RP -132F U-25 RP -132M U-45 RP -139A U-130 RP -132C U-26 RP -132M U-46 RP -14o U-132 RP -132B QU-51C RP -145E U-134 RP -132B RECORDS RECORD -HOLDER SHELF RECORD-HOLDEP SPINDLE POST PICKUP - ARM PICKUP INDEX AND RECORD REJECT LEVER RECORD -HOLDER POST RECORD -HOLDER S

37、HELF TURNTABLE TURNTABLE WITH RECORD IN PLACE. SWITCH NEEDLE ECREW/ IS INCH. NEEDLE MOLE MANUAL RP- 132 PICKUP REST NEEDLE GAUSS. PLATE NEEDLE EJECTOR TAW USED NEEDLE BOX REJECT 10 INCH These record changers are available for operation on volt- ages and frequencies as follows: RP -139-A 105-125 volt

38、s, 60 cycles, 21 watts RP -139-A 105-125 volts, 50 cycles, 21 watts RP -139-A 105.125 volts, 25 cycles, 22 watts RP -145 105-125 volts, 60 cycles, 15 watts RP -145 105-125 volts, 50 cycles, 15 watts RECORDS SPINDLE RECORD.NOLDER POST RECORD -MOLDER MIELP TURNTABLE WITH RECORD IN PLACE NEEDLE SCREW N

39、EEDLE MOLE IO INCH Motor Schematic R - 145 RECORD -MOLDER SHELF RECORO-HOLDER POST PICKUP -ARM PICKUP IND!X AND RECORD REJECT Leven PICKUP REST NEEDLE Ic 31159 Arm-Pickup arm complete-less crystal car - tridge, needle screw, and cable Cable-Pickup32635 lift arm cable and clips Cable-Output cable and

40、 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 Escutcheon-Speed regulator escutcheon 31160 91181 Screw-Pickup needle screw Shaft-Pickup pivot ar

41、m 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-Pickup arm base rubber mounting complete 31155 Spring-Needle cup lid tension spring 32632

42、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-Cam and gear assembly (4) 6808 31148 91129 31118 Clutch-Trip lever friction clutch assemb

43、ly (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 REPLACEMENT PARTS REFER TO MODEL U-46 91119 Gear-Long arm and rack gear for front left- hand record

44、 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 -tested parts, which are readily identified and may be purchased horn authorized dealers. STO

45、CK 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 RP -139A and RP -145. For replacement parts, refer to the Service 32955 Coil-Field coil an

46、d 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 ASSEMBLIES 32873 32872 Motor-Motor complete, 25 cycle, 110 volt AC Motor-Motor complete, 50 cycle,

47、 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 -cycle only. 32959 32958 Spindle-Turntable spindle complete with metal pinion and fibre gear

48、 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, 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 armatu