RCA-Victor-Co-Inc-16T3 电路原理图.pdf

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1、Models 16K end 16T3 MANUAL OF 1941 MOST POPULAR SERVICE DIAGRAMS COMPILED BY M. N. BEITMAN, SUPREME PUBLICATIONS FRONT APRON - REAR VttW 收音机爱 好者资料库 RadioFans.CN MANUAL OF 1941 MOST POPULAR SERVICE DIAGRAMS Alignment Procedure Cathode-Ray Alignment is the preferable method. Connec tions for the oscil

2、lograph 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, connect the low side of the test-oscillator to the receiver chassis, and

3、 keep the output as low as possible to avoid a-v-c action. Electronic Voltmeter.The- electronic voltmeter in the Chanalyst or Volt Ohmyst provides an unexcelled output indi cator. It should be connected to the AVC bus, and the test- oscillator output adjusted to produce several volts of AVC. Calibra

4、tion Scale.The glass tuning dial may be easily removed from the cabinet and temporarily attached to the chassis for quick reference during alignment. In the event that only the chassis is returned for service, and the cabinet with its tuning dial is left in the customers home, the calibra tion scale

5、 printed in this service note can be used in conjunc tion with an ordinary 12-inch ruler as an accurate and con venient 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 c

6、abinet. 2. With gang in full mesh, move the dial pointer to the reference mark at the left-hand end of the dial backing plate. 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. A

7、fter completion of 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. 2. Place

8、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 back ing 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 the dial w

9、ith an inch-scale drawn at top and bottom. To find the correct pointer posi tion 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 from the reference mark. Dial-Pointer Adjustment.After the chass

10、is 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. Connect the high side of the test-osc. to I-F grid, in series with .01 mfd. 1st det. grid, in series with .01 mfd. Antenna terminal, in series with 300 oh

11、ms (link open) Antenna terminal, in series with 200 mmfd. (link open) Tune test- osc. to Turn radio dial to “A” band, Quiet Point at 1,500 kc end of dial 15.2 me “C” band 1,500 kc “A”band 600 kc “A” band Adjust the follow ing for maximum peak output L7 and L8 (2nd I.F. Trans.) L5 and L6 (1st I.F. Tr

12、ans.) Cll (osc.)* C2 (ant.) C29 (osc.) C3 (ant.) L3 (in 16T2) L4 (in 16K and 16T2) Rock in Repeat steps 4 and 5. In case of instability during R-F alignment, connect a 27,000 ohm watt resistor across “D and “F” of 2nd I-F trans former. * Use minimum capacity peak if two peaks can be obtained. Check

13、to determine that the correct peak has been used, by tun ing receiver to 14.29 me, where a weaker signal should be received. VICTROLA RADIO ot=F y fuliS* *(;ow k * LOUD 4 LOW FULL SW BC PB /I V POWER-VOLUME/ VICTR0LARADI0 TUNING V RANGE CONTROL. TONE CONTROL CONTROL CONTROL RCA Ranufacturing Co. Cam

14、den, N. J. Mode Is 16K and 16T3 .-; USTtO REMOVE BACK, TAKE OUT THESE TWO SCREWS POWER CORO - CONNECTOR FOR VICTROLA OR TELEVISION ATTACHMENT COMPILED BY M. N. BEITMAN, SUPREME PUBLICATIONS 收音机爱 好者资料库 RadioFans.CN FADE 344-C MODELS 16K, 1612 and 16T3 Chassis No. RC -509C RC -509B RC -509A Six -Tube,

15、 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 RANGES (Models 16K and 16T3) One station between approximately 540.1,030 kc One stati

16、on 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) RCA-6SK7 I -F Amplifier (4) RCA-6SQ7 2nd Det., A.V.C., and A -F Amplifier (5) RCA-6K6

17、GT 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 at 400 cycles 2 2 ohms . 3.4 ohms Identification Number RL -70H6 RL -79B1 POWER SUPPLY

18、 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 SS 60 10 90 I10 130 150 DOMESTIC _C RC.F Y.ezr. SHORT WAVE E 1 1 1IDI2I1IEI1 MEO. cr.

19、 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 4 IIIIhl ih lih 1,lilillIiiIllllllII!IiIIlllIIllIliIlilliilllllllllllllllillllllil Ca

20、libration 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 -Ray Alignment is the preferable method. Connections for the oscillograph are shown in t

21、he 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, connect the low side of the test -oscillator to the receiver chassis, and keep the output as

22、 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 -oscillator output adjusted to produce several volts of AVC. Calibration Scale.-The gla

23、ss 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 in conjunction with an ordinary 12 -inch ruler as an accurate and convenient substitute

24、 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 the dial pointer to the reference mark at the left-hand end of the dial backing plate. a

25、 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-OSC.(16T3Ll6K) JACK 455 KC. -600 KC Models 16K. 1673, 16T3 At Rigltt-Calihrati11nl scale

26、 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. After completion of the alignment, replace the glass dial in cabinet, taking care th

27、at 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. 2. Place a flat 12 -inch ruler on the dial backing plate so the left -end of ruler is

28、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 the dial with an inch -scale drawn at top and bottom. To find the correct pointer pos

29、ition 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.-After the chassis is replaced in cabinet, move the dial pointer (if necessary) so that

30、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 PITTSGH BERLIN PHILA.LONDON i!21 16 IB 40M 31M 25M AMTS 19M 16M LONDON EASTERN PAR I S

31、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- Tune test- ose. to- Turn radio dial to- Adjust the follow - ing for maximum peak outp

32、ut - 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 series with 300 ohms (link open) n 15. me 15.2 mc C band C11 (ose.)* C2 (ant.) 4 Antenna

33、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 alignment, connect a 27,000 ohm l.q watt resistor across D and F of 2nd I -F trans forme

34、r. * 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 tracks above signal on both band PAGE 346-C I6K, 1612, 1613 1 A LOOP ANTENNA-GROUND Tai LI

35、14 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 Model 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

36、 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 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

37、 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 range switch to lance short as possible (16T2). 3. Tape together red, blue, and brown leads from chassis to loop

38、 (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-30 away from red and brown A.C. leads. 8. Dress power transformer leads down against chassis. 9. Dress brown po

39、wer 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 magnetite core oscil- lator coils and separate loop circuit trimmers which must be adjusted for the desired stations.

40、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 the five desired stations, arranged in order from low to high frequencies. 2. Turn the range switch to the bro

41、adcast (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 trimmers to minimum capacity. 5. Adjust L9 to receive the first station. To secure the best adjustment, rotate

42、 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 to the relatively high R -F gain, it may be found that there are several settings of each push-button magnetit

43、e 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. On the 880 to 1,560 kc push-button, the higher frequency stations may be received with L5 either in or out (

44、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) is the correct one. NOTE: Clockwise adjustment of cores and trimmers tunes the circuits to lower frequencies.

45、 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 VS 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

46、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, 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 - -

47、- 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 CTROLA 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 CONT

48、ROL 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 CONTROL 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 1