RCA-Victor-Co-Inc-61-9 电路原理图.pdf

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1、MANUAL OF 1947 MOST-OFTEN-NEEDED RADIO DIAGRAMS RCA Victor 65X1, 65X2 Chassis No. RC-1034 Connect the high side of test-oscillator to 12SK7 I-F grid through 0.1 mfd capacitor Ststor of C2 through 0.1 mfd. Ant. lead in series with 200 mmfd. Repeat stepa 3 and 4 Turn radio dial to Quiet-point 1,600 kc

2、 end of dial 600 kc “A Band Adjust the fol lowing for max. peak output C8 and C9 2nd I-F transformer *C6 and C7 1stI-F transformer C3 (osc.) Cl (ant.)- L5 (osc.) Rock gang * Do not readjust C8 or C9 when test oscillator is connected to C2. Output Motor AlignmentIf this method is used, connect the me

3、ter across the voice coil, and turn the receiver colume control to maximum. Test-Oscfllator.For all alignment operations, connect the low side of the test-oscillator to the receiver chassis, and keep the oscillator output as low as possible to avoid a-v-c action. Calibration Scale.The glass tuning d

4、ial .may be removed from the cabinet and mounted above the pointer for reference during alignment. The extreme left hand mark of. the Standard Broadcast scale must be in line with the left hand mark on the dial backing plate. Dial Backing Plato.In the event that only the cha.ssis is returned for ser

5、vice, the marks on the dial backing plate may be used during alignment; refer to the Dial Indicator and Drive Mechanism drawing for correspond ing frequencies. Dial Pointer.With the gang condenser in full mesh the dial pointer should be set to the left hand reference mark on the dial backing plate.

6、For additional information refer to booklet RCA Victor Receiver Alignment.” 540-.too I I SHOWN WITH GANG CONDENSER AT MAt. CAPAC TY. RCA Radlola Models 61-8 & 61-9 are similar. iooo 1300 I I 2 turns Dial-IndiccUor and Drive Mechanism -MEASURED WITH 3V. Fmex BIAS - 20 X- GOO KC. Bottom view oF TUBE SOCKETS t4oX -0.8X GOO-ASSKC. 485KC. I2SA7 1ST. DEXA OSC. C24 0*1 -100X - 45 5 KC. 3 12S0.7 2ND. DET. A.F: AND AVC 4 50L6&T OUTPUT - APPROX SAIN DATA USING CHANAUVST 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