RCA-Victor-Co-Inc-16T2 电路原理图.pdf

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1、FADE 344-C MODELS 16K, 1612 and 16T3 Chassis No. RC -509C RC -509B RC -509A Six -Tube, Two -Band, AC, Superheterodyne Receivers Model 1671 i111111111Ah1 Electrical Specifications Model 16K FREQUENCY RANGES Broadcast 5404,560 kc Short Wave 5.8-18 me INTERMEDIATE FREQUENCY 455 kc PUSH BUTTON FREQUENCY

2、 RANGES (Models 16K and 16T3) One station between approximately 540.1,030 kc One station between approximately 610-1,250 kc Two stations between approximately 740-1,430 kc One station between approximately 880-1,560 kc TUBE COMPLEMENT (1) RCA-6SK7 R -F Amplifier (2) RCA -6S7 1st Det., Oscillator (3)

3、 RCA-6SK7 I -F Amplifier (4) RCA-6SQ7 2nd Det., A.V.C., and A -F Amplifier (5) RCA-6K6GT Power Output (6) RCA -5Y3 -G Rectifier PILOT LAMP Mazda No. 51, 7.5 volts, 0.20 amp. POWER OUTPUT RATING Undistorted 2.5 watts Maximum 4.5 watts LOUDSPEAKERS 16K 16T2, 16T3 Size 12 -inch 6 -inch V. C. impedance

4、at 400 cycles 2 2 ohms . 3.4 ohms Identification Number RL -70H6 RL -79B1 POWER SUPPLY RATINGS 105.125 volts, 50-60 cycles 70 watts 105-125 volts, 25-60 cycles 70 watts 105.125, 200-250 volts, 50-60 cycles 70 watts INCHES ililllllillllllililiiliilillllllillllillllilllillliliilililiililllii BROADCAST

5、 SS 60 10 90 I10 130 150 DOMESTIC _C RC.F Y.ezr. SHORT WAVE E 1 1 1IDI2I1IEI1 MEO. cr. 49 M LONDON HAVANA I H I L A.0N. 1OE1( 105TON . 1111 L IN IIIISON 40M 31M 2SM AMOR 19M 16M LONDON FASILRH IISSCHENT LONDON LONOOM IIRLINNVIZIN HFMIS1.1FIF LONDON M. DONO SORTO PARIS N.RONIARII FOREIGN INCHES I 2 3

6、 4 IIIIhl ih lih 1,lilillIiiIllllllII!IiIIlllIIllIliIlilliilllllllllllllllillllllil Calibration Dial for jtfodcl 16K REFER TO PAGE 350C FOR SUPPLEMENTARY INFORMATION Alm 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 -R

7、ay Alignment is the preferable method. Connections for the oscillograph are shown in the schematic diagrams. Output 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, connec

8、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. Electronic Vltmeter.-The electronic voltmeter in the Chanalyst or Volt Ohmyst provides an unexcelled output indicator. It should be connected to the AVC bus, and the test -

9、oscillator output adjusted to produce several volts of AVC. Calibration Scale.-The glass tuning dial may be easily removed from the cabinet and temporarily attached to the chassis for quick reference during alignment. Or, if necessary, the calibration scale printed in this service note can be used i

10、n conjunction with an ordinary 12 -inch ruler as an accurate and convenient substitute for the regular dial. Each method is described below. Using Tuning Dial. - 1. Slide out the flat spring clamp at each end of the dial, and remove the glass dial from the cabinet. 2. With gang in full mesh, move th

11、e dial pointer to the reference mark at the left-hand end of the dial backing plate. a 0 RF n C28 C26 I5T.PET 2 ND. DET. 05C. AF AVC PRI(BOTTOM)I 15T. I.F SEC. (TUP)-.I 455 KC. ITRANs. 5 OUTPUT L TI 1I J C11-0SC. C29-OSC. RECT 15.2MC -./15OOKC. PRL(BOTTOM, L3-0SC. (16T2) J PHONO-TEL SEC. (TOP) L4-OS

12、C.(16T3Ll6K) JACK 455 KC. -600 KC Models 16K. 1673, 16T3 At Rigltt-Calihrati11nl scale for 16T2, 167-3 PAGE 345-C 16K, 16T2, 16T3 3. Place the glass dial under the pointer so that the extreme left scale graduations coincide with the pointer. Use scotch tape to hold the glass dial in this position. 4

13、. After completion of the alignment, replace the glass dial in cabinet, taking care that the fibre light shields are in correct position at ends of dial. Using Calibration Scale. - 1. With gang in full mesh, move the dial pointer to the reference mark at the left-hand end of the dial backing plate.

14、2. Place a flat 12 -inch ruler on the dial backing plate so the left -end of ruler is at the reference mark at left -end of backing plate. Temporarily fasten the ruler with scotch tape to the backing plate. 3. Refer to calibration scale printed in this service note. This is a reduced reproduction of

15、 the dial with an inch -scale drawn at top and bottom. To find the correct pointer position in inches for any desired frequency, draw a vertical line through this frequency on the calibration scale. For example, 1,500 kc is approximately 4 inches troni the reference mark. Dial -Pointer Adjustment.-A

16、fter the chassis is replaced in cabinet, move the dial pointer (if necessary) so that it is at the left-hand graduation on the dial with the gang in full mesh. INCHES 2 3 4 IIIIIIIIIIIIIIIIIIIIII 55 60 inrj.jcjii. UCI 1)0 . uu . . u . . . I.1 . . . .1 6 1 / I El MEX. CY. 49M N. YORK HAVANA CINCITI P

17、ITTSGH BERLIN PHILA.LONDON i!21 16 IB 40M 31M 25M AMTS 19M 16M LONDON EASTERN PAR I S SCHENY LONDON LONDON FIER IINNUIZEN HEMISPHERE LONDON N. KONG TOKYO PARIS N.KONGPAR IS INCHES IIIIIIIIIIIIIIIIIIIIIII11IIlIIlIlI11tIIIlIIIIIIIIIIIIIII1111 IIIII111I Steps Connect the high side of the test -ose. to-

18、 Tune test- ose. to- Turn radio dial to- Adjust the follow - ing for maximum peak output - I -F grid, in series with .01 mfd. 455 kc A band, Quiet Point at 1,500 kc end of dial L7 and L8 (2nd I.F. Trans.) L5 and L6 (1st I.F. Trans.) 2 1st det. grid, in series with .01 mfd. 3 Antenna terminal, in ser

19、ies with 300 ohms (link open) n 15. me 15.2 mc C band C11 (ose.)* C2 (ant.) 4 Antenna terminal, in series with 200 mmfd. (link open) 1,500 kc 1,500 kc.) A band C23 (ant.)9 e 600 kc 600 kc A band L3 (in 16T2) L4 (in 16K and 16T2) Rock in 5 6 Repeat steps 4 and 5. In case of instability during R -F al

20、ignment, connect a 27,000 ohm l.q watt resistor across D and F of 2nd I -F trans former. * Use minimum capacity peak if two peaks can be obtained. Check to determine that the correct peak has been used, by tun- ing receiver to 14.29 mc, where a weaker signal should be received. Note: Oscillator trac

21、ks above signal on both band 收音机爱 好者资料库 RadioFans.CN PAGE 346-C I6K, 1612, 1613 1 A LOOP ANTENNA-GROUND Tai LI14 TERMINAL BOARD TO REMOVE BACK, TAKE OUT THESE TWO SCREw% POWER CORO -_ . r- CONNECTOR FOR VICTROLA OR r- TELEVISION ATTACHMENT -CHASSIS Model 16T2 GRN BLUE RED REQ. re 1. BR I TO 51-52 Mo

22、del 16T2 _a SSO TO 74070 1550 1430 0_5, 04 0 .1.2 i t 3 2 i) CORE RODS% 540 TO 1030 A LOOP eeo5 TRIMMER SCREWS A O o ANTENNA-GROUND_.- LINK TERMINAL BOARD fCLOOP r0 REMOVE BACK, TAKE OUT THESE TWO SCREWS POWER CORO-I CONNECTOR FOR VICTROLA OR ! TELEVISION ATTACHMENT CHASSIS Model 16K, 16T3 PRI i RED

23、 I BLACK 1 I *A BAND LOOP CS -ANT. 1500. KC. C 2-A NT 15.2 MC. J. C. BAND LOOP 1 GRr+ BLUE- RED 1 I 1 RED. IN1 I JI ) 1312K -1 OND 10 CHASSIS Model 16K, 16T3 TOSI 52 Precautionary Lead Dress, - 1. Dress red leads from C band trimmer to coil and switch away from each other (16T2). 2. Keep bus from ra

24、nge switch to lance short as possible (16T2). 3. Tape together red, blue, and brown leads from chassis to loop (16T2). 4. Dress yellow lead from IF to tone switch up away from chassis. 5. Dress C-20 from volume control up away from chassis. 6. Keep grid end of R-12 as short as possible. 7. Dress C-3

25、0 away from red and brown A.C. leads. 8. Dress power transformer leads down against chassis. 9. Dress brown power transformer leads back away from IF trans- former. At left-Dial Drive in Models 16K, 16T2, 16T3 Push Button Adjustment (Models 16K end 1613) The push buttons connect to separate magnetit

26、e core oscil- lator coils and separate loop circuit trimmers which must be adjusted for the desired stations. Use an insulated screwdriver or alignment tool such as RCA Stock Nd. 31031. Allow about five minutes warm-up period before making adjustments. The procedure is as follows: 1. Make a list of

27、the five desired stations, arranged in order from low to high frequencies. 2. Turn the range switch to the broadcast (BC) position and manually tune in the first station on the list. 3. Turn range switch to push-button (PB) position and press in the left-hand button. 4. Unscrew the push-button loop

28、trimmers to minimum capacity. 5. Adjust L9 to receive the first station. To secure the best adjustment, rotate the set for least pickup, and adjust L9 for peak output. 6. Adjust C44 for peak output on the first station. 7. Proceed in the same manner to adjust for the remain ing four stations. Owing

29、to the relatively high R -F gain, it may be found that there are several settings of each push-button magnetite core that will bring in any particular station. The procedure outlined above (backing the push-button loop trimmers to minimum capacity before adjusting the cores) will- reduce this effect

30、. On the 880 to 1,560 kc push-button, the higher frequency stations may be received with L5 either in or out (oscillator frequency either 455 kc below or 455 kc above the station frequency). The adjustment with this core in its out posi- tion (oscillator frequency 455 kc above the station frequency)

31、 is the correct one. NOTE: Clockwise adjustment of cores and trimmers tunes the circuits to lower frequencies. 收音机爱 好者资料库 RadioFans.CN 3 D U U1 r4 N d NOLL O (Jell 8 - d mLL c7/(2)Li roz U TE d i Q 03 $ +r Y T N Ii-,i 1 V_ 01 NO_ u0S LL O N 3W e iN J /0-W 1-0 di YUU e R8 23 Q O it NN 8 ) 17 O NNui V

32、S NF HI, II Q V tl . m 0 Q f0 -+-II -4. II, y z m I, uoe-14 Ur E 1 . 11 o Z W S LL n,F II c E FA._;E 347-C 16K, 1612, 1613 J ,I el CI 0,9 a ry r o ?AC 348-C I6K, 16T2, 1673 x 2 o$ we o? vez J J O O o Tg II mil_ yyypppp bt_ V o $ R . N El NO 0 DWyJl Y ii I- Z J 6) 33 J) ti- ro ci fuo II _0. u b .K11,

33、 CATHODE CURRENTS (I) GSK7 _ _ _ _ 15.5 MA. (2) 65A7 - _ _ 9.0 MA. (3) 6SK7 - - - - 16.5 MA. (4) GSG7 - - - - 0.4 MA. (5) 6K6 -6T - - - 35.0 MA. TOTAL RECTIFIED- -TE. 4 MA. 5 m0LL m 11( II j c; Ov o s .94494QI 81.4 .2 08 *.1.1a uF LL rF 24: U13 I I J 6 Ps 0 dt , 31 r PAGE 349-C 16K, 16T2, 16T3 CTROL

34、A RADIO 0 SOFT it FFA FULL J LOW i SW BC , fit L ! LOUD LOW FULL POWER -VOLUME/ VICTROLARADIO TUNING RANGE CONTROL i TONE CONTROL CONTROL CONTROL Model 16T2 VICTROLA RADIO fe SOF i OFFT FUL eLOW 1 LOUD- LOW !1 FULL SW BC Pb POWER -VOLUME VICTROLARADIO TUNING RANGE CONTROL TONE CONTROL CONTROL CONTRO

35、L Model 16K, 16T3 Replacement Parts Insist on genuine Factory -tested parts, which are readily identified and may be purchased from authorized dealers. STOCK No. DESCRIPTION STOCK DESCRIPTION MODEL 16T2 (RC -509B) 31418 Spring-Drive cord spring MODEL 16T3 (RC -509A) 35868 Switch-Push button switch-(

36、Models 16T3 and MODEL 16K (RC -509C) 16K) 35864 Switch-Range switch-(Models 16T3 and 16E) 34785 35857 Board-Antenna-Ground board Capacitor-Mica trimmer -1 section of 3-30 p 35865 35636 Transformer-FirstorRange switch-(Model ransfo 1T2) I -F transformer mmfd. and 1 section of 8-80 mmfd. 35790 Transfo

37、rmer-Second I -F transformer 35867 Capacitor-Mica trimmer comprising 2 sections of 8-80 mmfd. 35588 Transformer-Power transformer -110 volts, 25 cycle 35869 Capacitor-Mica trimmer comprising 1 section of 10-160 mmfd., 2 sections of 25-250 mmfd., 1 section of 50-400 mmfd., and 1 section of 100-540 mm

38、fd. (Models 16T3 and 16K) . 35587 35853 Transformer-Power transformer -110 volts, 60 16K) cycle-(Model Transformer-Power transformer -less end shields -110 volts, 60 cycle (Models 16T2 and 34699 Capacitor -100 mmfd., mica 16T3) 12720 Capacitor -100 mmfd., moulded . 33726 Washer-C washer for tuning s

39、haft 34700 Capacitor -120 mmfd. 13003 Capacitor -180 mmfd. SPEAKER ASSEMBLIES 12952 Capacitor -330 mmfd. (RL -70H6) 35877 Capacitor -720 mmfd. Model 16K 13895 Capacitor -5,600 mmfd. 30303 Capacitor-.0035 mfd. (Models 16T2 and 16T3) 31825 Cap-Cone center dust cap 33640 Capacitor-.005 mfd, 11469 Coil-

40、Hum neutralizing coil 5148 4937 Capacitor-.007 mfd. Capacitor-.01 mfd. 33116 31275 Coil-Speaker field coil Cone-Speaker cone, voice coil, and dust cap 32787 Capacitor-.05 mfd. 5118 Plug -3 -contact male for speaker 4839 Capacitor -0.1 mfd. 31301 Transformer-Output transformer 35858 Capacitor-Electro

41、lytic comprising 2 sections of 10 mfd., 450 volts, and 1 section of 20 mfd , SPEAKER ASSEMBLIES 25 volts (RL -79B1) 35876 Coil-Coil and resistor assembly R16 and L2 Models 16T2 and 16T3 (L4 in 16T2) 35849 Cap-Dust cap 35785 Coil-Loop primary (L1) 35880 Coil-Field coil 35803 Coil-Oscillator coils for

42、 push button switch- 35441 Cone-Cone complete with voice coil (Models 16T3 and 16K) 35879 Transformer-Output transformer 35854 Coil-Oscillator coil 35874 Condenser-Variable tuning condenser MISCELLANEOUS ASSEMBLIES 35861 Control-Tone control-( Models 16T3 and 16T2) 35935 Control-Tone control-(Model

43、18K) 35883 Button-Push button-(Models 16T3 and 18K) 35859 Control-Volume control and power switch (dark brown) 32634 Cord-Drive cord 36299 Button-Push button (light brown) 35871 Core-Adjusting core and stud for oscillator coils 35921 Decalcomania-Control panel decal-(Model -(Models 16T3 and 16K) 16T

44、2) 35788 Core-Core and stud for oscillator coil 35920 Decalcomania-Control panel decal- (Models 35870 Indicator-Station selector indicator 16T3 and 16K) 35856 Loop-Antenna loop winding 35393 Decalcomania-Television decal 16K) 35855 Loop-Antenna loop complete 35938 Dial-Glass dial scale-(Model 35936

45、Plate-Dial back plate-(Model 18K) 35918 Dial-Glass dial scale-(Model 16T2) 16T3) 35873 Plate-Dial back plate-(Model 16T2) 35917 Dial-Glass dial scale-(Model 35872 Plate-Dial back plate-(Model 16T3) 35937 Escutcheon-Dial scale escutcheon-(Model 16K) 5119 35882 Escutcheon-Dial scale escutcheon - (Mode

46、l Plug -3 -contact female plug for speaker cable- (Model 16E) 16T2) 32289 Pulley-Drive cord pulley and rivet 35915 Escutcheon-Dial scale escutcheon-less dial - 30881 Resistor -470 ohms, 1 watt (Model 16T3) 14720 Resistor -1,000 ohms, watt 35881 Escutcheon-Push button escutcheon-(Models 14024 30894 R

47、esistor -2,700 ohms, watt Resistor -3,900 ohms, watt 35814 16T3 and 18K) Knob-Tone control or range switch knob (dark 35875 13998 Resistor -12,000 ohms, 3 watts Resistor -22,000 ohms, watt 36297 brown) Knob-Tone control or range switch knob (light 12454 Resistor -33,000 ohms, I. watt brown) 12412 Resistor -47,000 ohms, 3 watt 35775 Knob-Tuning or volume control knob (dark 12285 12679 Resistor -470,000 ohms, I. watt Resistor -2.2 meg., 3 watt 36298 brown) Knob-Tuning or volume control knob (light 13601 Resistor -10 meg., j watt brown) 35862 Shaft-Tuning shaft 11765 Lamp-Dial lamp 35772 3