Continental-Radio-and-Television-Corp-XB6 电路原理图.pdf

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1、MANUAL OF 1942 MOST POPULAR SERVICE DIAGRAMS I25J7 BF AMR I2SA7 1ST. DET-O&C. I2SK7 I2S07 35L6 I- F. 2Nfe DET. AVC- Itt AUft. OUTPUT _21a 11a ( 225a &A /TTilTI i, / Rl 5 Rll .? R* 5r.ii - / T / Ics “ -i- cidmkaL 35Z5 RECTIFIER CHASSIS Jr 05 1 A.C. LINE I.P. 456 KC. GROUND GROUND Volume control tappe

2、d at 100,000 ohms and 200,000 ohms from zero end. RESISTORS R1 . 10,000 R2 .10,000,000 R3 . 25,000 R4 . 100 R5 . 1,000,000 R6 . 50,1)00 R7 . 30,000 R8 V. C. 500,000 R9 . 5,000,000 R10 . 250,000 Rll . 500,000 R12 . 150 R13 . 150,000 ANTENNA r I2SQ7 ANT. SEC. M I2SA7 osc. V J SEC I2SR7 A7 12417 (2SK7

3、35 L6 CONDENSERS No. Capacity (Mfd.) Cl .005 C2 .000785 C3 .05 C4 .02 C5 .00005 C6 .00025 C7 .01 C8 .01 C9 .01 CIO.0005 Cll.01 C12.02 C13a .30. Elect. C13b .50. Elect. C14.05 C15 .2 C16 .00025 C17.1 In model B6 only, X and Y are connected together. R13, C15, and C4 are not used. C is connected to D.

4、 VOLUME CONTROL _ AND SWITCH TUNING CONTROL Top ViewTube and Trimmer Location I2SQ7 Lo-1 56 r* 4 lfkdz“6 83 110 81 82 90 AC AC | / 48 AC 0 87 e Ill AC O 5 48AC -1 o 35 Z 5 35 L6 I25K.7 I2SJ7 Bottom ViewVoltage Chart Voltages are positive D. C. unless noted. Measured from chassis with 20,000 ohm per

5、volt meter. On XB6 Series use floating ground instead of chassis. Line117 volts, 60 cycle A.C. Volume control at max imum. No station tuned in. iTPOINTER EXTREMES CHASSIS 400 KC. Al To simplify chassis alignment out of the cabinet dial frame is marked as shown. HOW TO STRING DIAL CORD On models with

6、 a SlNGLF drive pulley 10 The dial cord is strung, w th the gang closed, by starting at 1 ar d continuing, in rotation through 20. A piece of cord 46 long is necessary, which length allows -v 3 at each end for tying knot. -i * On models with DOUBLE drive pulley the dial cord is in two pieces. The Q_

7、 1 pointer cord is on the large pulley starting at 1 and continuing through 20 BUT in the following special order, 1, 2, 3, 4, 18, 19, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20. The drive cord is on the smaller dotted pulley, in the dotted position. kcJBijCPJ To clarify dial cord arrangement the dial frame is shown as transparent. COMPILED BY M. N. BEITMAN, SUPREME PUBLICATIONS 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN