RCA-Victor-Co-Inc-V-225 电路原理图.pdf

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1、收音机爱 好者资料库 RadioFans.CN MANUAL OF 1942 MOST POPULAR SERVICE DIAGRAMS RCA Rode Is V-215, V-219, V-221, V-225 A o LOOP AND PHONO. MOTOR CONNS V 219 (RC5S4-A) Cathode-Ray Alignment is the preferable method. Connections for the oscillograph are shown in the schematic diagram. Output Meter Alignment.If t

2、his 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 avoid a-v-c action. Electronic Vo

3、ltmeter.The electronic voltmeter in the Chanalyst or VoltOhmyst 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 glass tuning dial may be easily removed from the cabinet and

4、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 full size calibration scale printed in this service note can be used as an accurate and conven

5、ient substitute for the regular dial. Using Tuning Dial. 1. Remove the dial glass from the cabinet. 2. With gang at full mesh move the pointer to a point (1/16) inch to the left of the reference mark at the left hand end of the dial backing plate. 3. Place the glass dial under the pointer so that th

6、e extreme left sale graduations coincide with the pointer. Use scotch tape to hold the glass dial in place. Using Dial Scale Printed In This Service Note. Follow the procedure above, substituting the dial scale printed in this service note for the glass dial in the cabinet. Steps Connect high side o

7、f test osc. to Tune test osc. to Turn radio dial to Adjust the follow ing for maximum peak output 1 I-F grid in series with .01 mfd. 455 kc “A” Band 540 kc L12, Lll (2nd I-F Trans.) 2 1st Det. grid in series with .01 mfd. L10, L9 (1st I-F Trans.) 3 Y ellow loop lead in series with 200 mmf. (link clo

8、sed) 1,600 kc “A” Band 1,600 kc C9 (osc.) 4 600 kc “A” Band 600 kc L8 (osc.) 5 Repeat steps 3 and 4 6 Ant. terminal in series with 47 mmf. (link closed) 6.1 me “B“ Band 6.1 me C8 (osc.) * C2 (ant.) 7 16.2 me “C” Band 15.2 me C7 (osc.)* C6 (ant.) 8 9.5 me “C” Band 9.5 me C4 (ant.) 9 Repeat steps 7 an

9、d 8 10 Install and connect chassis in cabinet, with link closed. Tune in a radiated oscillator signal at 1,600 kc and peak the “A band ant. trimmer C3 (on loop). Rock in L8 for peak out put at 600 kc. * Use minimum capacity peak if two peaks can be obtained. Oscillator tracks 456 kc above signal on

10、all bands. Critical Lead Dress 1. Push button, R.F. and oscillator leads should be separated as much as possible to reduce degeneration on push button reception. 2. R.F. choke in plate circuit of 6SG7 should be dressed towards the back apron. 3. Dress green push button lead under clamp and away from

11、 “C” band series capacitor. 4. Dress heater leads away from grids and diodes. 5. Dress phono, cables up and away from all wiring. 6. Dress all excess leads from transformer towards back towards transformer. 7. Keep output plate leads short and dressed close to chassis. 8. Dress green lead from 6SA7

12、screen to electrolytic down close to chassis. 9. Dress “C” band coil lead from oscillator coil to range switch down towards green lead. 10. Keep yellow loop lead clear of all wiring. 11. Dress ground bus of large electrolytic away from mounting lug. 12. Remove all excess slack from pilot light assem

13、bly and dress it close to chassis base away from volume control. 13. Dress oscillator grid capacitor (56 mmfd.) up and away from the screen and plate of 6SA7 socket. 14. A C leads to “off-on” switch should be kept away from tone control cable to reduce hum. 15. Peaking coil should he dressed away fr

14、om R-F grid resistor to reduce degeneration in R-F stage. 16. Dress oscillator push button lead in weld clamp on front apron away from 220 mmf. series condenser. 17. Keep all leads away from Phono. FM jack to prevent audio oscillation and hum. Dress undernealh the shield provided. COMPILED BY M. N.

15、BEITMAN, SUPREME PUBLICATIONS 收音机爱 好者资料库 RadioFans.CN PAGE 7R-C MODELS V-215, V-219, V-221, V-225 Chassis No. RC -564 RC -564A RC -564 RC -5648 Nine -Tube, Three -Band, AC, Superheterodyne Receivers and Phonographs Model V-215 Electrical and Mechanical Specifications FREQUENCY RANGES Standard Broadc

16、ast (A) 540-1,600 kc Medium Wave (B) 2,300-6,300 kc Short Wave (C) 9,400-15,400 kc Intermediate Frequency 455 kc ELECTRIC TUNING No. of Stations 1 540-1,030 kc 2 610-1,250 kc 2 740-1,430 kc 1 880-1,600 kc TUBS COMPLEMENT (1) RCA-6SG7 R -F Amplifier (2) RCA-6SA7 1st Detector-Oscillator (3) RCA-6SK7 I

17、 -F Amplifier (4) RCA-6SQ7 2nd Det., A -F, A.V.C. (5) RCA-6SQ7 Phase Inverter. (6) RCA-6F6G Power Output (7) RCA-6F6G Power Output (8) RCA -6R7 Pre. Amplifier (9) RCA-5U4G Rectifier POWER OUTPUT RATING Undistorted 10 watts Maximum 12 watts LOUDSPEAKER Type 12 -inch electrodynamic Voice Coil Impedanc

18、e 2.2 ohms at 400 cycles Identification Number (RL -70-M2) POWER SUPPLY RATINGS (V-219, V-225) 105-125 volts, 50-60 cycles 145 watts total POWER SUPPLY RATING (V-215, V-221) 105-125 volts, 50-60 cycles 145 watts total 105-125 volts, 25 cycles 145 watts total AUTOMATIC PHONOGRAPH RP -160 For V-215, R

19、P -160A for V-219, RP -160B for V-22 Type Pickup Crystal Record Capacity Twelve 10 -in., Ten 12 -in. records Power Consumption 160 ,17 watts Power Consumption 160A 14 watts AUTOMATIC PHONOGRAPH RP -151 for V-225 Type Pickups (2) Crystal Record Capacity Fifteen 10 -in or Twelve 12 -in. Power consumpt

20、ion turntable drive motor (14) watts Power consumption -cycle motor (38) watts CABINET DIMENSIONS (inches) V-215 . 35! . 35 . 16b V-219 34 . 35 . 19 V-221 36 . 38 . 179 V-295 . 411 . 402 . 199 Height Width Depth Chassis Base Dimensions (inches) 3 . 119 . 109 Over-all Chassis Height (inches) 7 WEIGHT

21、 (lbs.) V-215 100 120 V-219 102 125 V-221 112 133 V-225 156 198 18-1 Tuning Drive Ratio For Information on Automatic Mechanism, Refer to Service Notes on RP -160 for V-21 J, RP -160A for V-219, RP -160B for V-221, and RP -151 for V-225 LINK G L1 C3 SOCKET PLUG TO 51 (7) To S2 (11) LOOP AND PHONO- MO

22、TOQ CONNS V 219 (RC 5QS4A) External Antenna.-For best reception on C band with an ex- ternal antenna, peak the trimmer on C antenna coil for maximum output on a station in the 31 -meter band. OFF SPEECH FULL POWER -BASS TONE CONTROL DIAL PUSH BUTTONS FIJI BASS TREBLE TONE CONTROL LAUD so FT M. TELlV

23、 PHONO. RADIO VOLUME SERVICE SELECTOR MANUALTUNING RANGE CONTROL CONTROL CONTROL CONTROL R-194 ELECTRIC C TUNING For all Models A 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 PAGE 790-C V-215, Y-219, V-221, V-225 POLICE Alignment Procedure AIRCR

24、AFT 90M AMATEUR 60M AIRCRAFT 49M - 2.3 2.5 3.0 3.5 4.0 5.0 6.0 SPITTSH CHENEW TORII NY 1 l 1 l L 1 1 1 E 1 1 1 1a 1 1 L 1 L1 1 E L1 1 a L 1_11 1 1_l E.1 E E E 55 60 70 80 100 120 140 160 l ! 1 1 I 1 1_ 1 1 1! t L 11_ 1 1 1 1! 1 l l 1! 1_1 1 1 1_111 1_ 1 1 ! t! 1 1 9.3 31 METERS HAVANA T OK Y O MANIL

25、A ANKARA LONDON BUENOS H KONG BERLIN LISBON I0 1 1 i 1 1 25 METERS AMATEUR 19 METERS CWKING I I I SALOI+GON I BEERLLDON IIN 13 14 15 BERLIN 1_ 1 1 1 . 1 L 1_. I L 1 l L I 1 I! 1 l 1 1 1 1 The dial scale drawing shown is a full size reproduction. It can be used as a direct substitute tor regular dial

26、 scale in alignment procedure. Cathode -Ray Alignment is the preferable method. Lonnections for the oscillograph are shown in the schematic diagram. Output Meter Alignment. -If this method is used, connect the meter across the voice coil, and turn the receiver volume control to maximum. Test -Oscill

27、ator. -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. Electronic Voltmeter. -The electronic voltmeter in the Chanalyst or VoltOhmyst provides an unexcelled output indicator. It should

28、 be connected to the AVC bus, and the test -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. In the event that only the chassis i

29、s returned for service, and the cabinet with its tuning dial is left in the customers home, the full size calibration scale printed in this service note can be used as an accurate and convenient substitute for the regular dial. Using Tuning Dial. - 1. Remove the dial glass from the cabinet. 2. With

30、gang at full mesh move the pointer to a point (1/16) inch to the left of the reference mark at the left hand end of the dial packing plate. 8. 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 place.

31、 Using Dial Scale Printed In This Service Note. - Follow the procedure above, substituting the dial scale printed in this service note for the glass dial in the cabinet. LB A -0X. 600 KC. RI RB C21 C 21A C7- GOsc. o C4 15.2 MC. C -ANT. J _B.OSC. 9,SMC.6.1 MC. JOO g nn C9-A-osc.C3 1500 KC. 6?1 MC C2-

32、 N7 C6 -C -ANT. s 5.2 MC. 6 L9 -BOTT L10 -TOP 455 KC. FM - TELEv. .P L411.DHONO- SACK JACK Steps Connect high side ofing test osc. to- Tune test osc. to- Turn radio dial to- Adjust the follow - for maximum peak output - 1 I -F grid in series with .01 mfd. 456 kc A Band 540 kc L12, Lll (2nd I -F Tran

33、s.) 2 1st Det. grid in series with .01 mfd. LbO, L9 (1st I -F Trans.) 3 Yellow looplead in series with 200 mmf. (link closed) 1,500 kc 1,500 Band kc C9 (osc.) 4 600 kc A Band 600 kc L8 (osc.) 5 Repeat steps 3 and 4 6 Ant. terminal in series With 47 mnti. (link closed) 6.1 me B Band 6.1 me C8 (osc.)

34、C2 (ant.) 7 15.2 me C Band 15.2 me C7 (osc.) C8 (ant.) 8 9.5 me C Band 9.6mc C4 (ant.) 9 Repeat steps 7 and 8 10 Install and connect chassis in cabinet, with link closed. Tune in a radiated oscillator signal at 1,500 kc and peak the A band ant, trimmer C3 (on loop). Rock in L8 for peak out- put at 6

35、130 kc. Use minimuth capacity peak if two peaks can be obtained. Oscillator tracks 455 kc above signal on all bands. Critical Lead Dress 1. Push button, R.F. and oscillator leads should be separated as much as possible to reduce degeneration on push button reception. 2. R.F. choke in plate circuit o

36、f 6SG7 should be dressed towards the back apron. 3. Dress green, push button lead under clamp and away from C band series capacitor. 4. Dress heater leads away from grids and diodes. 5. Dress phono. cables up and away from all wiring. 6. Dress all excess leads from transformer towards back towards t

37、ransformer. 7. Keep output plate leads short and dressed close to chassis. 8. Dress green lead from 6SA7 screen to electrolytic down close to chassis. 9. Dress C band coil lead from oscillator coil to range switch down towards green lead. 10. Keep yellow loop lead clear of all wiring. 11. Dress grou

38、nd bus of large electrolytic away from mounting lug. 12. Remove all excess slack from pilot light assembly and dress it close to chassis base away from volume control. 13. Dress oscillator grid capacitor (56 mmfd.) up and away from the screen and plate of 6SA7 socket. 14. A -C leads -to off -on swit

39、ch should be kept away from tone control cable to reduce hum. 15. Peaking coil should he dressed away from R -F grid resistor to reduce degeneration in R -F stage. 16. Dress oscillator push button lead in weld clamp on front apron away from 220 mmf. series condenser. 17. Keep all leads away from Pho

40、no. -FM jack to prevent audio oscillation and hum. Dress underneath the shield provided. x2 0 o x2 00 c9O U XY No 0 -m LL 4Z JO cc Q G Z r 0 riT r c,I- O VvvN . , 1-0 Ir CI Ko m c9 w d N U Qoi U7 ii -U_ Q 7 N U N(G U- Ua (N U en - N U o a 12 HI, AZO (n O ASH ToA N H, N - cc Uc; eD CCr N m U 33Qf itt

41、m I I0 J IF -N N O to 2 U In i N in J m co v cc 2 N r r -. H o, O UdY a 1nN a aUU , wWQ Q J O wOJ =t9Q oix AC/ D4 cc)e -co M z 8 .). coiLJ 2,- Q (Jl o r J y 2 V=- tl.1 H J Y a 00l- d+, Z ui 111 1:41,-. (1) e2 I- tj J1N0 N oC ( 14 1 Q J = cf , Q *=Jo o r U oo t -N N QQQ t2. 221212 3g, d1nAl(vN O i N

42、N N c 4 J!a r b 0 t 1 PAGE 792-C V-215, V-219, v-221, V-225 Push Button Adjustment 12-74St I 3. Turn range switch to push-button position and press in the 1 left-hand button. e T,. 740 TO .430 I 6.0 TO 1260 1540 TO 1600 KC KC TRIMMER I I KC 11030 KC 4. Adjust core rod No. 1 to receive the first stat

43、ion. To secure SCREWS I e e I e el the best adjustment, rotate the loop for least pickup, and adjust core CORE The6 I 5 4 I 3 2 l t rod No. 1 for peak output. Roos 1 o e t 0 1 0 5. Adjust trimmer screw No. 1 for peak output on the first station. The push buttons connect to separate magnetite -core o

44、scillator coils 6. Proceed in the same manner to adjust for the remaining stations. and separate k circuit trimmers which must be adjusted for the 7. Repeat adjustments for best results. desired stations. Use an insulated screwdriver or alignment tool such as RCA Stock No. 31031. Allow about five mi

45、nutes warm-up period On the 880 to 1,600 kc push-button, the higher frequency stations before making adjustments. may be received with core rod No. 6 either in or out (oscillator fre- The procedure is as follows: quency either 455 kc below or 455 kc above the station frequency). The adjustment with

46、this core in its out position (oscillator frequency 1. Make a list of the desired stations, arranged in order from low to high frequencies. 455 kc above the station frequency) is the correct one. 2. Turn the range switch to the broadcast position and manually NOTE: Clockwise adjustment of cores and

47、trimmers tunes the tune in the first station on the list. circuits to lower frequencies Replacement Parts Insist on genuine factory -tested parts, which an readily IdsntiRed and may be purchased from authorized ds,lsn. STOCK No. DESCRIPTION STOCK No. DESCRIPTION 36342 34889 37888 38852 38801 38368 1

48、2723 12720 34699 12724 34700 13003 38830 12537 38831 44338 37102 34459 30303 33584 4937 11315 36248 37706 32787 4839 12484 38387 38358 35876 38800 36447 32634 35788 38359 38790 35870 36333 38832 30868 36009 31572 32641 39153 12493 32289 38808 14720 14499 36714 30492 30409 12268 30434 12412 30650 14138 14560 14