RCA-Victor-Co-Inc-5Q8 电路原理图.pdf

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1、PAGE 73-C MODEL 508 PULLEY INDICATOR DRIVE CORD IN REAR GROOVE OF DRUM Five -Tube, DRUM PULL KNOB SHAFT g PULLEY Chassis No. RC -396B RC -477B Three -Band, AC -DC, Superheterodyne Receiver PULLEY DRUM DRIVE CORD IN FRONT GROOVE OF DRUM Arrangement of Drive Cords for Tuning Condenser and Dial Indicat

2、or Electrical Specifications FREQUENCY RANGES Long Wave (X) 145.405 kc (2069-740 m) Medium Wave (A) 540-1720 kc (555.174m) Short Wave (C) . 5.8.18 me (551.7.16.6 m) INTERMEDIATE FREQUENCY. TUBE COMPLEMENT (1) RCA-6SA7 Detector -Oscillator (2) RCA -6K7 LF Amplifier (3) RCA-6SQ7. 2nd Detector, A.V.C.,

3、 and A -F Amplifier (4) RCA -25L6 -G. Power Output PILOT LAMP Mazda No. 47, 6.3 volts, 0.15 amp. POWER OUTPUT RATING (210-250 Volt Operation) Undistorted Maximum (105-125 Volt Operation) Undistorted Maximum S RI, 455 kc 65A7 IAT.OET. A.OSC. T MMR jCl C J LI J A frrn m ANT. LOI LS MMR 1.5 watts 2.7 w

4、atts 1.7 watts 2.9 watts BOTTOM VIEW OF TUBE SOGMETS 6 C16 - .MFOI D. (Model 5Q8E is brown; 5Q8F is black; 5Q8G is ivory; and 5Q8H is maroon.) POWER SUPPLY RATINGS 105.125 volts, AC -DC 210.250 volts, AC -DC LOUDSPEAKER 65 watts 125 watts T 5 -inch V. C. Impedance 3.0 ohms at 40 cycles (5) RCA -25Z6

5、 -G Rectifier Ballast Tubes RCA Stock No. 32544 for 105-125 volt operation; RCA Stock No. 32850 for 210.250 volt operation. Precautionary Lead Dress: 1. Lead from 2nd I -F transformer to volume control should be kept close to the chassis and dressed against front apron. 2. C-10 should be dressed awa

6、y from the antenna section of the variable condenser (GI). 6A. 6507 2SL6-G I. F. EON. OET., A.F.,a P.V.C. OUT PUT L12 LI 47,6 eo. VOLUME CONTROL R6 I MIL. CIA 100 MMF R7 220,DD9A 11 C21 .000 MID. as 3 PILOT 110V. BALLAST LAMP, TUBE RIP - N . COLD 40aMOT 0 OO 1133.- O nnrr MFD. L1 1901 osai -B RIC T.

7、 220V. BALLAST TUSE EEO AWE. With Ton. Control: The 2nd production of Model 5Q8 uses chas- sis No. RC -477B and has a .25 meg. tone control. The tone control is connected in place of the output -tube grid resistor (R9), with a .005 mfd. capacitor connected from the arm of the tone control to the 1st

8、 -audio .late. RCA VICTOR DIVISION OF RADIO CORPORATION OF AMERICA, CAMDEN N. J., U. S. A. R0 SONS (cCOc NttSCLcw,ial i 7,ri.eHowN IN O O, R12 IS- WLD- 40wMOT OWO O als 210- 210 收音机爱 好者资料库 RadioFans.CN PAGE 74-C 5Q8 CATHODE CURPEN15 0 . 5A7 9.04 MA GK7 1280 - (319507 0.19 4)251_5-G 490 (5)Z5Z6-G 71.

9、00 OUTPUT 2O i r TRANS. ELECT. CAP HEATER VOLTAG 25L6 -G Ar+D 25Z6.5.25 V A C 6507,6K7,65A-7 G.3v AC .s. 7-074705Ci 900 KC L9 TRANS. 4551(C G a. Irrc ;z9e l r IC7 C is . C C31 RANGE SWI H CONQ Cl B j 33 /IIIY YELLOw .Agra J C I t ANT a lu OCT. 05C I R2 F GSA L 1 IBM CATHODE RAY O5C1-LOGPAPA CONNECTI

10、ONvERTICALHi TOT1.,15ERM l VERTICAL O-TOCHA55I5 C 27 -ANT 15.2 MC. T C26ANT 360,(C Alignment Procedure ITEPS CONNECT THE HIGH SIDE OF THE TEST-OSC. TO - TUNE TEST-OSC TO - TURN RADIO DIAL TO ADJUST THE FOLLOWING FOR MAX. PEAK OUTPUT 1 5K7 I-F grid in series with 01 mfd. 455 kc Alt Band Quiet Point L

11、12 and L13 (2nd I-F Trans.) 2 6SA7 det. grid in series with OS mfd. L10 and L11 (1st I-F Trans.) 3 Ant. term. in series with 200 mmf. 1500 kc (152.4) A Band Cg (osc.) C26 (ant. ) 4 Ant. term. in series with 200 mmf 600 kc (33) A Band L8 (osc.) 5 Repeat steps 3 and 4 g Ant. term. in serles with 200 m

12、mf. 360 kc (151.5) X Band C8(osc.) C28 (ant.) 7 Ant. term in series with 200f 175 kc (53.3) X Band L9 (osc.) 8 Repeat steps g and 7 9 Ant term. in series with 300 Ohms 15.2 me 7.2 Band C27 () C5 ( (ant.) ) 10 Ant. term in serles with 200 mmf 3g0 kc . (151.6) X Band C8 (osc.) 11 Ant. term. in series

13、with 200 mmf 1500 RC (152.4) A Band Cg (osc.) Ose tninitnum capacity peak if two can be obtained. NOTE: Oscillator tracks above signal on all bands. BOTTOM View- Pt hit Of 1Ph.3;,S R -F Wiring Diagram and Socket Voltages * NOTE: Values with star (*) are operating voltages in circuits with high serie

14、s resistance. The actual measured volt- ages will be lower, depending on the voltmeter loading. Measurements made to chassis unless otherwise indicated, with set tuned to quiet point and volume control at mini- mum. Values should hold within 20% with 117 -volt a -c supply. SN -918 (RC -396B) L9-OSC.

15、 L13- SEC.ADJ 1751-5C 455KC t 1 1 720 IF. 1_11- SEC. ADJ, 455 KC TRANS. BLUE -ANT. 4L8-OSC. I.F. RECT. POWER LINE BLACK -CND- 600 KC INPUT PLUG 2MDDET.,A.V.C-& A.F. Tube and Trimmer Locations Test-Oscillator.-For all alignment operations, connect the low side of the test -oscillator to the receiver

16、chassis, and keep the output as low as possihle to avoid a -v -c action. Calibration Scale On Indicator -Drive -Cord Drum.-In most cases it will not be necessary to remove the chassis from the dial scale for alignment, allowing the dial scale to be used for calibration. How- ever, if alignment is ma

17、de with the receiver chassis removed, the calibration scale attached to the rear of the drum which. is mounted on the front shaft of the gang condenser must be used. The setting of the gang condenser is read on this scale, which is Calibrated in degrees. The correct setting of the gang in degrees, f

18、or each alignment fre- quency, is given in the alignment table. Pointer for Calibration Scale.-Improvise a pointer for the calibra- tion scale by fastening a piece of wire to the gang -condenser frame, and bend the wire so that it points to the 0 mark on the calibration scale when the plates are ful

19、ly meshed. Dial -Indicator Adjustment.-After fastening the chassis in the cabi- net, attach the dial indicator to the drive cable with indicator at the 530 kc mark, and gang condenser fully meshed. The indicator has a spring clip for attachment to the cable. For additional details, refer to booklet

20、RCA Victor Receiver Alignment. 收音机爱 好者资料库 RadioFans.CN Calibration Scale PAGE 75-C 5Q8 liulllll1llllllllllllllulllulllllI!lull!-11111111111IIIII 0 10 20 30 49m 40 50 IIIIIIIIIIIIIIIIIIIII111111III1IIllIIIIIIIIIIIII Ipiutliiii IIIIIIIIIIIIIIIIIIIIIIIlll111lllll111l11II11111111I111ilnn) 60 70 80 90 10

21、0 110 120 130 140 150 160 1701 180 40m 31m 19m 16m 25m .3 C 6 7 8 9 10 _ 12 14 16 18 Mc BUDANSI . MADONA NAGUI-I MADRID - SONS BOLOGNA 1 -II -SCOT. N. - GENOA - VIENNA LYONS P.T.T. MUMCH . STRASIO MID. RIO. KOSICE BORDEAUX ATMmNS JERUSALEM MAMMIESLONDON I. KNIGS. NICE -COTE - WARSAW -2 RABAT ,E NORM

22、 RIG. BAGHDAD MAMWIO RENNES FRANKFURT RADIO LYONS SUNDSVALL . BOTTLNS TOULOUSE TOULOUSE IEYROUT ULLI P T T I NORMANDIE ATHLONE MORMEC-I IMORADE MVO -BRUSSELS BORDIAUK IOME.2 VAASA . MUUILs., PARIS R.T.T. LWOW ALGIERS MADRID MARTIAN BU RO OS fNTTGART CAIRO -I STOCKHOLM MILAN -I IRESLAU MELNIK RIGA .

23、Alls-Nfifl LISBON IOMI-1 IUCMAIEST - P. PARIS. - N. E. REG. - RADIO MEDITNRANJE ORmow . TINONAO IRIVERSUM WINE N. I. RN. HOMY NAPLES 850 m 800 m 480 m 400 m 350 m 300 m 250 m 200 m 2 A. 550_ 600 700 800 1000 1200_ _ 1400 1600 Kc ISTANBUL MOSCOW -I DIOITWICH MOSCOW TIMJ51 MOSCOW- KAUNAS RADIO PARIS M

24、INSK KALUNDIO tMV9SUM ANKARA MOTALA KIIV-1 RNMAIK MASOV MKUISK WARSAW -1 OSLO ROSTOV -ON-DON - LANs I JUN LUXEMBOURG LENOIAD-I BUDAPEST -2 2000 m 1500 m 1600 m 1400 m 1200 m 1000 m 900 m 500 m 150 170 200 250 300_ X . 350 400 K C o 10 2,0 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 Iiii

25、iiIIIIIIIIIIIIIIIIIIiiiinlIl11lullIIlllllllllllliIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIlitili illiIIIIIIiliiiiIIIIIIIIIIIIIIlIIIIIIIIIIIIIIIIIIIiiiii II1ll11111 nlii11lld Receiver Dial Scales, and Corresponding 0-180 Calibration Scales Ballast Resistor: In Model 5Q8 Service Data, change Stock Stock No. N

26、o. 32544 to MI -8115 (135K1). No. 32544 8) may be used if terminals 3 and 4 REPLACEMENT PARTS 34224 Control -Tone control, 250,000 ohn are con by a jumper, 4838 Capacitor -.005 mfd. are connected Insist on genuine factory -tested parts, which are readily identified and may be purchased from authoriz

27、ed dealers. STOCK DESCRIPTION STOCK N DESCRIPTION 32850 32832 32635 12581 12948 12723 30949 14262 32238 30232 12694 12952 32853 13895 32830 32829 14393 4858 4870 4886 4839 32826 32822 32823 32707 32931 32817 32634 32713 32835 31480 32828 32834 32709 32850 30880 3528 12454 ASSEMBLIES (RC396B) Ballast

28、 -Ballast resistor tube, 110 volt opera- tion (R12, R13) Ballast -Ballast resistor tube, 220 volt operation (R12, R13, R14) Bracket -Drive bracket pulleys, and tuning knob shaft complete Cable -Pointer drive cable Cap -First I.F. transformer shield cap Capacitor -33 mmfd. (C28) Capacitor -56 mmfd. (

29、C4) Capacitor -56 mmfd. (C14, C15) Capacitor -109 mmfd. (C12, C13). Capacitor -110 mmfd. (C18). - Capacitor -200 mmfd. (C9) Capacitor -220 mmfd. (C3) Capacitor -330 mmfd. (C19) Capacitor -580 mmfd. (C7) Capacitor -5,600 mmfd. (C10) Capacitor -Trimmer capacitor bank, 2 sections 2-20 mmfd. (C26, C27)

30、Capacitor -Trimmer capacitor bank 3 sections 5-50 mmfd. (C5, CO, C8) Capacitor -.O1 mfd. (C16, C20) Capacitor -.01 mfd. (C30) Capacitor -.025 mfd. (C22) Capacitor -.05 mfd. (C31) - Capacitor -0.1 mfd. (C17, C29) Capacitor -Electrolytic, 2 sections 40 mfd., 1 section 20 mfd. (C23, C24, C25) Coil -Ant

31、enna coil -A, C bands (L1, L2, L3, L4) Coil -Antenna coil -X band (L5, L6) Coil -Oscillator coil -A, C bands (L7, L8) Coil -Oscillator coil -X band (L9) Condenser -2 -gang variable condenser (C1, C2, C11) Cord -Drive cord Core -Core and stud for oscillator coil adjust- ment Drum -Drive cord drum Lam

32、p -Dial lamp Plug -Line plug for rear of chassis Pulley -Pointer cord pulley and bracket Reactor -Filter reactor (L14) Resistor -Ballast resistor tube, 110 volt opera- tion (R12, R13) Resistor -Ballast resistor tube, 220 volt opera- tion (R12, R13, R14) Resistor -150 ohms, watt (R10) Resistor -2,200

33、 ohms, watt (RS) Resistor -33,000 ohms, watt (R2) 5132 12264 13730 11668 13601 14887 32848 32833 31365 31251 14278 30956 31418 32820 14376 32825 32029 32850 32818 32926 5133 32925 32845 32836 32838 32844 33088 32842 32840 33090 33092 33089 33565 33094 33564 32847 32846 4393 Resistor -47,000 ohms, 1/

34、10 watt (R6) Resistor -220,000 ohms, watt (R7, R9) Resistor -1 meg., watt (Rl) Resistor -5.6 meg., watt (R4) Resistor -10 meg., watt (R8) Retainer -Tuning knob shaft retainer Screw -No. 8-32 square head set screw for drum Shaft -Tuning knob shaft, eyelet and retainer Socket -Dial lamp insulated sock

35、et Socket -Octal base tube socket Socket -Phonograph socket Socket -Speaker socket Spring -Drive cord or pointer cable tension spring Switch -Range switch (S2, S3) Transformer -First i.f. transformer (L10, L11, C12, C13) Transformer -Second i.f. transformer (C14, C15, C18, R5, L12, L13) Transformer

36、-Output transformer (T1) Tube -Ballast resistor tube, 110 volt operation (R12, R13) Tube -Ballast resistor tube, 220 volt operation (R12, R13, R14) Volume control and switch (R6, S1) SPEAKER ASSEMBLIES (84556-1) Cone -Cone and voice coil in metal housing (L15) Pin -Speaker lead pin Speaker -Complete

37、 . MISCELLANEOUS ASSEMBLIES Bracket -Dial mounting bracket and lamp bracket assembly -less pointer and pointer slide rods. Cord -Power cord complete with plugs Dial -Dial scale Knob -Black range switch knob Knob -Black tuning knob Knob -Black volume control knob Knob -Brown tuning knob Knob -Ivory r

38、ange switch knob Knob -Ivory tuning knob Knob -Ivory volume control knob Knob -Maroon range switch Knob -Maroon tuning knob Knob -Maroon volume control Pointer -Dial pointer, carriage and clip Rod -Pointer slide rod Screw -No. 8-32 z 5/16 headless set screw for knob, Stock Noe. 32840, 32842, 32844, 33088, 33089, 33090, 33082 and 33094 收音机爱 好者资料库 RadioFans.CN