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1、MANUAL OF 1940 MOST POPULAR SERVICE DIAGRAMS MODELS 5Q5, 5055, 5Q56 and 6Q7 PSTOmE control U5E0 ON (207 ONLV OUTPUT CATHODE CURRENTS n)4f)07 0.78 II (A) 6 Ffib-G j,? (jo a TOTAL RECTIFIED BCURPENT= 57MA C -j it? I if* I O GSQ7 TVW-f 2DET. AFsAVC. - W * OSClLLO5RAPH CONNECTIONS ! therefore, a calibra
2、tion scale is attached to the rear of the drum which is mounted on the front shaft of the gang condenser. The setting of the gang condenser is read on this scale, which is calibrated in degrees. The correct setting of the gang in degrees, for each alignment frequency, is given in the alignment table
3、. As the first step in r -f alignment, check the position Of the drums. The 135 mark on the drum scale must be vertical, and directly under the center of the gang -condenser shaft when the plates are fully meshed. The drum is held to the shaft by means of a set screw, which must be tightened securel
4、y when the drum is in the correct position. 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 stark on the calibration scale when the plates are fully meshed. Dial -In
5、dicator Adjustment.-After fastening the chassis in the cabi- net, attach the dial indicator to the drive cable with indicator at the C5- 05C. C8- 05C. C6-OSC. 2 ND. PET. 20 MC. 1500 KC. 6 MC. AVC. AF Plfh C2- ANT. 1500 KC. C27 -ANT 6 MC. 1ST. DET OSC. y LI1- SEC. ADI 455 KC. 2ND.I.F _ TRANS. 15T LE
6、TRANS. 25Z6 G OUTPUT Rc477A 50.6 25L6 G STK.NO. 32849 K-85277-5 IF. RECT. BLUE -ANT. C26 -ANT. L-f-O5C. L9 - SEC. ADJ. BLK-6ND. 20 MC. 600 KC. 455 KC. BAL- LAS /1 POWER UNE INTERLOCK POWER OUTPUT RATING (210.250 Volt Operation) Undistorted Maximum 1 5 watts 2.7 watts LOUDSPEAKER (84557-2) Type 5 -in
7、ch V. C. Impedance - 2.2 ohms at 400 cycles POWER SUPPLY RATINGS 210-250 volts, 50-60 cycles 210.250 volts, direct current Procedure 125 watts 125 watts 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
8、 RCA Victor Receiver Alignment. Steps Connect the high side of test-osc. to- Tune test-osc. to- Turn radio dial to- Adjust the fol - lowing for max. peak output 1 6K7 I -F grid cap, in series with .01 mfd. 455 kc 455 kc A Band quiet point between 550-750 kc L10 and L11 (2nd I.F. trans.) 2 Tuning con
9、denser stator (osc.) in series with .01 mfd.* L8 and L9 (1st I.F. trans.) 3 Antenna lead in series with 200 mmfd. 600 kc 600 kc (33) A Band L7t 4 1,500 kc 1,500 kc (152.4) A Band C8 (osc.) 5 Repeat steps 3 and 4 6 Antenna lead in series with 400 ohms 20 me 20 me (155.4) C Band C5 (osc.)* C26 (ant.)
10、8 me (148) B Band C6 (osc.)* C27 (ant.) 8 Antenna lead in series with 200 mmf. 1,500 kc 1,500 kc (152.4) A Band C8 (osc.) * Use minimum capaci y peak if two peaks can be obtained. t Rock gang condenser slightly while adjusting L7. * Make test -oscillator connection to lug on tuning condenser stator
11、(oscillator section) in series with .01 mfd. condenser. Note.-Oscillator tracks 455 kc above signal on all hands. 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 7i-C I 2 J R 5Q6 Z 0 U 收音机爱 好者资料库 RadioFans.CN PAGE 72-C 5Q6 Calibration Scale In
12、nimipmlmrin!nf rrinnlnnlnlfln!rnrlmflnnlnnlnnlnnpnnlrnrinnlmrinnlrrinnlnnlnnlnnlnlniipTirinn!nnlnrrinnl 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 ISO 160 170 180 C 1 1.sn.M HONG K0.a-vTto-.OMI 114u441-IOKTO-0T1I6R0M tOM0014-501ttn .t.nM-IOMOOM tMtIM - w1rfOM HtMn.M.t IMOOM-,HtM, -M.0.10 40141
13、00M - .OMt -.IS WM -I111fYOM M. TOOK -.un tOMOOM-tOMT .a - SUN -Muul 31m UM 25m n.out M.T. lem NUM 18m HurtM 13m RIM ToeK 40m 8 9 10 12 14 16 18 20 22 AK 3 B POLICE 120m 100m 75m 80m 50m 2.3 2.5 2.1 3.0 3.5 4.0 5.0 6.0 1.0 atc L 550m 500m 450m 400m 350m 300m 250m 200m POLICE A 550 600 100 800 1000 1
14、200 1400 100 . 1 . . E . . . . . . .0.E . . . O .0.0.0.0.E. .E. .E. .E. .O. . . 0 IO 20 30 40 50 60 70 80 30 100 110 120 130 140 150 160 170 180 luu!uu!wi6ul!nnllnllulrllm6ullufl6,uluuluulull!uuluuluulllll6nl!uu!uuluuluul,luiwdtulluuulltulluulmlluuluulrtff6uflu, Reduced Reproduction of Receiver Dial
15、, and Corresponding 0-180 Calibration Scales The corresponding position of the dial indicator for any setting of the calibration scale can be determined by drawing a line from this Win on the bottom calibration scale to the same point on the top calibration scale. For example: 33 on the calibration
16、scale corresponds to approxi- mately 7.9 me on C hand, and 600 kc on A band, etc. Read instructions under Alignment Procedure. REPLACEMENT PARTS Insist on genuine factory -tested parts, which are readily identified and may be purchased from authorized dealers. STOoCK DESCRIPTION STOCK ON K DESCRIPTI
17、ON ASSEMBLIES 3526 Resistor -2,200 ohms, i watt (R3) (RC -477A) 30146 Resistor -4,700 ohms, watt (R18) 12454 Resistor -33,000 ohms, watt (R2) 32849 Ballast -Ballast resistor (R12, R13, R14) 5132 Resistor -47,000 ohms, 1/10 watt (R5) 32832 Bracket -Drive bracket, pulleys and tuning knob 12264 Resisto
18、r -220,000 ohms, 4 watt (R7) -shaft complete 13730 Resistor -1 meg., 3 watt (R1) t 12723 Capacitor -56 mmfd. (C4) 11688 Resistor -5.6 meg., watt (R4) 30949 Capacitor -58 mmfd. (C14, C15) 13601 Resistor -10 meg., watt (R8) 14262 Capacitor -110 mmfd. (C12, C13) 32848 Screw -No. 8-32 square head set sc
19、rew for drum 32238 Capacitor -110 mmfd. (C18) 31365 Socket -Dial lamp insulated socket 12694 Capacitor -220 mmfd. (C3) 31251 Socket -Octal base tube socket 12952 Capacitor -330 mmfd. (C19) 31418 Spring -Drive cord or pointer cable tension 12537 Capacitor -560 mmid. (C9) spring 31403 Capacitor -3,300
20、 mmfd. (C7) 32819 Switch -Range switch (S2, S3) 31405 Capacitor -6,000 mmfd. (C10) 14376 Transformer -First i.f. transformer (L8, L9, C12, 32830 Capacitor -Trimmer capacitor bank, 2 sections C13) 2-20 mmfd. (C26, C27) 32825 Transformer -Second i.f. transformer (L10, L11, 32829 Capacitor -Trimmer cap
21、acitor bank, 3 sections C14, C15, C18, R5) 5-60 mmfd. (C5, C6, C8) 32849 Tube -Ballast resistor (R12, R13, R14) 4838 Capacitor -.005 mmfd. (C21, C32) 14393 Capacitor -.01 mfd. (C18, C20, C30) SPEAKER ASSEMBLIES 4870 Capacitor -.025 mfd. (C22) (84557-2) 4886 Capacitor -.05 mfd. (C31) 14826 Capacitor
22、-.07 mfd. (C33) 32923 Coil -Speaker field coil (L12) 4839 Capacitor -0.1 mfd. (C17, C29) 32922 Cone -Speaker cone - and voice coil in metal 32851 Capacitor -Electrolytic comprising 1 section of housing (L14) 40 mfd. 1 section of 15 mfd. and 1 section of 5118 Plug -3 -contact male for speaker 20 mfd.
23、 (C23, C24, C25) 32924 Transformer -Output transformer (T1) 32821 Coil -Antenna coil A, B, C bands (L1, L2, L3, L4) MISCELLANEOUS ASSEMBLIES 32824 Coil -Oscillator coil A, B, C bands (L5, L6, L7) 32817 Condenser -2 gang variable condenser (C1, C2, 32837 Dial -Glass dial scale C11) 32845 Frame -Dial
24、frame complete with back plate 34224 Control -Tone control (R20) shaft retainer, dial bracket and lamp bracket. 34851 Control -Volume control and power switch (R21, 32847 Indicator -Station selector indicator and carriage S1) 32844 Knob -Black range switch knob 32634 Cord -Variable tuning condenser
25、drive drum cord 33085 Knob -Black -tone control or tuning knob 32635 Cord -Indicator drive cord 32842 Knob -Black volume control and power switch 32713 Core -Core and stud for oscillator coil adjustment knob 32835 Drum -Drive cord drum 32839 Knob -Brown tone control or tuning knob. 31480 Lamp -Dial
26、lamp 33090 Knob -Ivory range switch knob 5119 Plug -S -contact female for speaker cable 33089 Knob -Ivory volume control and power switch 32834 Pulley -Drive cord pulley and mounting bracket knob (1 pulley) 4393 Screw -No. 8-32 set screw for knobs 32849 Resistor -Ballast resistor (R12, R13, R14). 32848 Shaft -Indicator guide shaft 13988 Resistor -10 ohms, watt (R15) 14270 Spring -Retaining spring for knobs, Stock No. 30880 Resistor -150 ohms, 4 watt (R10) 32839 and 33085
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