RCA-Victor-Co-Inc-98X 电路原理图.pdf

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1、PAGE 640-C MODELS 97Y, 98X, 98EY, 98YG Chassis No. RC -352A RC -352 RC -352 RC -352 Seven- and Eight -Tube, Three -Band, Electric -Tuning, AC -DC Superheterodyne Receivers FREQUENCY RANGES Model 98EY -* END TABLE 8 Tubes, Including Ballast. 8 -inch Speaker f- Model 97Y CONSOLE 7 Tubes, Including Bal

2、last. 12 -inch Speaker Model 98YG - CONSOLE GRAND 8 Tubes, Including Ballast. I2 -inch Speaker F Model 98X TABLE MODEL 8 Tubes, Including Ballast. 6 -inch Speaker Electrical Specifications R -F ALIGNMENT FREQUENCIES StandardBroadcast (A) 540-1,720 kc Short Wave (C) 20 me (osc., ant.) -Medium Wave (B

3、) 2.3-7 me Medium Wave (B) 6.1 me (osc.) Short Wave (C) 7-22 me Standard Broadcast (A) 1,500 kc (osc.) Intermediate Frequency 455 kc Six Electric Tuning Positions 550.1,500 kc 2 stations between approximately 550- 950 kc (Buttons 1 and 2) 2 stations between approximately 680.1,180 kc (Buttons 3 and

4、4) 2 stations between approximately 890-1,500 kc (Buttons 5 and 6) 97Y 98X 98EY 98YG 12 inches 6 inches 8 inches 12 inches V. C. Impedance at 400 cycles 2.2 ohms 3 ohms 2.2 ohms 2.2 ohms RCA TUBE COMPLEMENT (1) RCA -6K8 FirstDetector-Oscillator (6) RCA -25Z6 Half -Wave Rectifier (2) RCA -6K7 Interme

5、diateFrequency Amplifier RCA -6U5 (Models 98X, 98EY, 98YG) Tuning Tube (3) RCA -6H6 SecondDetector and A.V.C. RCA Stock No. 31577 (Models 98X, 98EY, (4) RCA -6J7 Audio Voltage Amplifier 98YG) Ballast Tube (5) RCA -25L6 Audio Power Amplifier RCA-BK36C (Model 97Y) Ballast Tube Pilot Lamps (2 on Model

6、97Y) (3 on Models 98X, 98EY, 98YG) Mazda 47, 6.3 volts, .15 amp. POWER OUTPUT POWER SUPPLY RATING Mndimum d 1.5 watts A -C Rating 105-125 volts, 25-60 cycles, 55 watts a2.5 watts D -C Rating 105.125 volts, 55 watts LOUDSPEAKER (PERMANENT -MAGNET DYNAMIC) Diameter RCA VICTOR DIVISION OF RADIO CORPORA

7、TION OF AMERICA, CAMDEN N. J., U. S. A. 收音机爱 好者资料库 RadioFans.CN W J 11 f w oo.f ., a .111O 4 0-il-il1 IL PAGE 641-C 97Y, 98X, 98EY, 98YG REFER TO MODEL 96K2 FOR ALIGNMENT DATA AND CHANGES IN CHASSIS MARKED M OR R 4 II t.4 22-_ k zdd4d G o b : a+ 0 U 0y .0 oi n U a+ y M 3 eda y + a 0.0 64. o Q L 00 ,

8、ri S v . 4. - d E ov 4=x y PI0 V.u . v ,.; 5Q d v ( oo V 收音机爱 好者资料库 RadioFans.CN PACE 642-C 97Y, 98X, 98EY, 98Y6 1 in circuits with high series -resistance. The actual measured _L. TONE LONT R13 u TAP DUMM VOLTAGES MEASURED FROM TH15 POINT - VOLUME CONIROI. OSCILLOGRAPH CONN:- vERT1CALHI TO HERE VER

9、TICAL 0 TO HERE 2SP IF TRANS - n+ C 20 O 6J7 le AUDIO TA BLK-RED HEATER vOLT5,TUBESI,3,4,7. 6.3 V. 1110V ANTet TRIMMERS CABLE TO TUNING TUBE (OMITTED IN 97y) OMIT7TEDY IN 9 PRI. ADJ L12 455 KC 110V. 76V 6K7 CATHODE CURRENTS (I) 658 10.3 MA (2) 657 B MA (3) 6H6 (4)6-17 0.5 MA (5J25LE, 50 MA -(7) GUS

10、- I.I MA TOTAL RECTIFIED Ott 70 MA PO I F TRANS. I PRI ADJ. 110 455 KC 1536 53G GREEN R 1 1-j. C 3 C2 T0CAP6TO C29 OMITTED 61(B ( 97 VI / is CET A OSC. V PUSH-BUTTON SWITCH 535 534 545 I 539 I 540 541 542 137 C C O C IN a .rie IN SOME MODELS. THE UNGROUNDED TERMINAL OF EACH TRIMMER 15 ON THIS END 52

11、3 5J2 TUBER 5,6. 25V. III TERM BOL4 II BOARD R -F Wiring Diagram and Socket Voltages Measurements made to low -side of tone control unless otherwise indicated, with set tuned to quiet point and volume control at minimum. Values should hold within approximately 20% with 117 -volt a -c supply. On d -c

12、, voltages are ap- proximately 10% lower, except heaters, which remain the same. BROWN TO ELECT TUNING LAMP 543 55,C 54 BROWN 5I 542-55 541 -RED I BROWN S5 TO SWITCH 1 Lt 1.2,13 TO CHASSIS COIL POLARITY L37, L35, L39. L40 141, L42 ;KEEN RED C15 BLUE C19 GREEN C15 - BLACK (COMMON) T 88579 C30 20 MC L

13、 16 TO C 25 LI BLUE RANGE SWITCH L2 TO ANeT L3 L l 28V IN 97V / 12 V IN 97Y - - -VAC. BALLAST TUBE BLU a 2%V AC. 3 ! C 2 C25 NOT IN 97Y O2 D 4V .AC o GND ANT 1.11 L13 TUNING TUBE SEC.ADJ. SEC. ADJ. OMITTED ON 455 KC 455 KC-. MODEL R7 Y C29 ANT. 1 1sTI.F.TRANS 15T DET. has been changed from the tone

14、control terminal to ter- minal No. 3 (one nearest end of chassis) of the volume control. Such a change of return point for the shield minimizes hum and possible audio oscillation. The correct connection is shown in the Ser- vice Data diagram. 收音机爱 好者资料库 RadioFans.CN AGE 643-C 97Y, 98X, 98EY, 98Y6 RE

15、PLACEMENT PARTS Insist on genuine factory -tested parts, which are readily identified and may be purchased from authorized dealers. STOCK DESCRIPTION STo. OCK o. DESCRIPTION RECEIVER ASSEMBLIES 14887 Retainer -Retainer for drive cord pulley 31577 Ballast -Ballast resistor tube (R22, R23, R24) 4669 S

16、crew -No. 8-32 square head set screw for drum 372 30284 Models 98X, 98EY and 98YGaft-tock Ballast -Ballast resistor tube (R22, R23) Model 31368 Shaft -Station selector knob shaft and pulley. atiNo 97Y 31199 12110 Shield -Dial lamp shield Shield-Radiotron shield cap 31767 Board -Antenna -ground termi

17、nal board 31365 Socket -Dial lamp socket 31579 30752 Board -Phonograph terminal board Bracket -Bracket for holding Magic Eye tube 13871 Socket -Magic Eye socket -Models 98X, 98EY and 98YG -Models 98X, 98EY and 98YG 31251 Socket -Tube socket 14338 Bushing -Variable condenser mounting bushing and scre

18、ws 31313 Spring -Tension spring for station selector push button switch latch bar 31400 Capacitor -Adjustable trimmer capacitor, two sections 2-10 mmfd. and one section 3-30 31418 Spring -Indicator or drum drive cord . tension spring 14079 31387 mmfd. (C21, C23, C25) Capacitor -6.8 mmfd. (C1) Capaci

19、tor -Antenna coil trimmer capacitor bank 31370 Switch -Push button selector switch (S4, S5, S31, S32, S33, S34, S35, S36, S37, S38, S39, S40, S41, S42, S43, S44, S45) -20-470 mmfd. (C31, C32, C33, C34, C35, 31398 Switch -Range switch (S1, S2) 12948 C36) Capacitor -33 mmfd. (C3) 30957 Transformer -Fi

20、rst i -f transformer (L10, L11, C5, C6) 12720 Capacitor -100 mmfd. (C42) 30903 Transformer -Second i -f transformer (L12, L13, 13003 Capacitor -180 mmfd. (C37) C7, C8) 12488 Capacitor -270 mmfd. (C49) 31577 Tube -Ballast resistor tube (R22, R23, R24)- 30433 Capacitor -470 mmfd. (C2) Models 98X, 98EY

21、 and 98YG 31381 Capacitor -620 mmfd. (C24) 30284 Tube- Ballast resistor tube (R22, R23)- 31435 4881 Capacitor -750 mmfd. (C26) Capacitor -3300 mmfd. (C22) Model 97Y 12897 Capacitor -4700 mmfd. (C47) SPEAKER ASSEMBLIES 31405 Capacitor -6000 mmfd. (C27) Model 98X 5148 Capacitor -.007 mfd. (C48) (84307

22、-1) 4838 Capacitor -.005 mfd. (C14, C43) 14393 Capacitor -.01 mfd. (C10) 31665 Cone -Speaker cone and voice coil (L14) 11315 Capacitor -.015 mfd. (C12, C17) 5118 Plug -3 contact male plug for speaker 4886 Capacitor -.05 mfd. (C13, C20, C44) 31664 Speaker complete 4839 Capacitor -0.1 mfd. (C38, C48)

23、31666 Transformer -Output transformer (T1) 12484 Capacitor -0.25 mfd. (C4, C45) 31323 Capacitor -16 mfd. (C16) SPEAKER ASSEMBLIES 31576 Capacitor -Comprising one 32 mfd., one 20 mfd., and one 16 mfd. section (C15, C18, C19) Models 97Y and 98YG (Speaker RL 71 A-1) 30904 Capacitor -100 mid. (C5, C6, C

24、7, C8) 31581 Cell -Bias cell 31275 Cone -Speaker cone and voice coil (L14). 31382 Clip -Mounting clip for coila and cores on oscilla- 5118 Plug -3 Contact male plug for speaker tor bank 31798 Speaker -Less output transformer 31402 Coil -Antenna coil (L1, L2, L3) 14628 Transformer -Output transformer

25、 (T1) 31401 Coil -Oscillator coil (L4, L5, L6, L7, L8, L9, C24) SPEAKER ASSEMBLIES 31385 Coil -Push button oscillator coil (L37, L38) Model OBEY 31384 Coil -Push button oscillator coil (L39, L40) (Speaker RL 73-5) 31383 Coil -Push button oscillator coil (L41, L42) 31369 Condenser -2 -gang variable t

26、uning condenser 31310 Cone -Speaker cone and voice coil (L14) (C28, C29, C30) 5118 Plug -3 Contact male plug for speaker 5119 Connector -3 -contact female connector plug for 31997 Speaker Complete reproducer cable 14628 Transformer -Output transformer (T1) 31366 Control -Volume control, tone control

27、, and on -off switch (R6, R13, S3) MISCELLANEOUS ASSEMBLIES 31374 31375 Cord -Indicator pointer drive cord Cord -Indicator pointer drive cord 12038 Band -Rubber band shield for Magic Eye - Models 98X, 98EY and 98YG 30905 Core -Adjustable core for i -f transformer 31397 Button -Station selector push

28、button 31386 Core -Adjustable core and stud assembly for oscillator bank 31458 Cover -8 -protective covers for push button markers 31372 Drum -Variable condenser drive cord drum and 31394 Clip -Pointer travel stop clip calibrator 31406 Dial -Station selector dial scale 31580 Holder -Bias cell holder

29、 31543 Disc -Electric Tuning indicator disc- Models 31480 Lamp -Dial lamp 98X, 98EY and 98YG 31373 Pulley -Drive cord pulley 31407 Escutcheon -Magic Eye or Electric Tuning in - 5066 Reactor (L16) dicator escutcheon -Models 98X, 98EY and 31577 Resistor -Ballast resistor (R22, R23, R24) 98YG -Models 9

30、8X, 98EY and 98YG 31395 Escutcheon less dial -Station selector escutcheon scale and push buttons Indicator -Station selector indicator pointer 30284 Resistor -Ballast resistor (R22, R23) -Model 97Y 31392 30880 Resistor -150 ohms, watt (R12) 31355 Rnob-Range switch knob 30694 Resistor -3,900 ohms, 3

31、watt (R15) 14359 Knob knob -Station selector Knob -Tone control knob 14284 Resistor -22,000 ohms, 1/10 watt (R4) 31391 12738 Resistor -27,000 ohms, watt. (R18) 30773 Knob -Volume control knob 12454 Resistor -33,000 ohms, watt (R2, R20). 31458 Marker -Dial Tuning push button marker 14560 Resistor -10

32、0,000 ohms, watt (R9, R14). 31457 Marker -Record Playe push button marker 12264 Resistor -220,000 ohms, 4 watt (R5) 31589 Marker -Station call letters push button markers 12199 Resistor -270,000 ohms, watt (R19) 31393 Screen -Color screen for dial frame 14983 Resistor -330,000 ohms, watt (R8) 4982 S

33、pring -Retaining spring for knob Stock No. 12285 Resistor -470,000 ohms, watt (Rl, R21). 14359 12013 12679 Resistor -1 meg. 1/10 watt (R16) Models 98X, 98EY and 98YG Resistor -2.2 meg, watt (R3) 30330 14270 Spring -Retaining spring for knob Stock No 31391 Spring -Retaining spring for knob Stock Nos. 14343 Retainer -Drive cord pulley retainer 30773 and 31355