RCA-Victor-Co-Inc-66X9 电路原理图.pdf

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1、MANUAL OF 1947 MOST-OFTEN-NEEDED RADIO DIAGRAMS Alignment Procedure RCA Victor MODELS 66X1, 66X2, 66X3, 66X4, 66X9 Chassis No. RC-1038 C22DSC. |00 KC. m CZA-tMTjA laooKj LZ W w/B trap 465 KC. CIO-0C. w / :cosc. C25 37 11.8 MC. /vTS (KSM) I lOP-eorTOM 456 KC. ttM7. . 8.7 MA. .ft. Test Osdttster.Conne

2、ct high side of test oscillator as shown In chart Connect low side throegh capacitor to common Keep the output signal as low as pombleHo avoid A.V.C. action. Output Meter.Connect meter across spker voice coil. Turn volume control to maximum clockwise positbn, statbn selector switch to broadcast maxi

3、mum high position (pos. 2), for broadcast alignment and to position 3 for high frequency hand. Dial Pointer Adjustment.Rotate tunln|i condenser fully counter clockwise (spates fully meshed). Adjust indicator to 2*/i$ in. from end of bkplate as Indicated in drawing. On models 66X1 and 2 the dial indi

4、cator is accessible for adjustment by removing the metal strip below the dial glass. (Lift and swing the top forwajd). Connect high side Steps Uie rest oscillator to Pin 14 (tfmiar , grid127lF * tube in series wite 0.1 mfd. #8 (signal . grid USATlst det in series wiOi 0.1 mfd. Antenna in series with

5、 200 mmf. . Turn radio dial Adjust Uie follow ing for maximum peak output Quiet point at 1600 kc end of Uie dial Repeat steps 4 and 5. Antenna in series wiUi 50 mmf. Repeat steps 9 and 10. T2t 2nd I-F trans. T1 1st I-F trans. L2 for minimum output (Wave trap) C22 (o) C24 (ant) L13 While rocking C20

6、(Osc.)* C26 Ant while rocking gang LIO (Osc L14 while rocking gang *If two peaks are obtained use minimum cap peak. *If two peaks are obtained use minimum inductance peak. tDo not repeat step No. 1. LtS UlS sec. PU1. lU., 0.8.n. 1ST.J.R TKAHS. 2NO. I.F. trams. tV. eMsAsunao with chanalyst OR VOCTONMyST. pIPICATeS COtHOM WIRINP . INSUtATBO PSOM CHASSIS. WAVS trapA X PCAXINS 9 COIL INOICAteS CHASSIS .SI90UN0 SorMt- lOSHISV *0.90*1 WS-USV 00 iai 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