RCA-Victor-Co-Inc-96X4 电路原理图.pdf

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1、MANUAL OF 1939 MOST POPULAR SERVICE DIAGRAMS MODELS 96X-1, -2, -3, -4 and -11, -12, -13, -14 Chassis No. RC-400 and RC-400A Six-Tube, Two-Band, A-CD-C, Superheterodyne Receivers Alignment Procedure Output Meter Alignment.Connect the meter across the voice coil, and turn the receiver volume control t

2、o maximum. Teat-Oscillator.Connect the low side of the test-oscillator to the receiver chassis, through a .01 mfd. capacitor, and keep the output as low as possible. Dial Setting.To set dial indicator drum, turn tuning condensers fully clockwise and then counter-clockwise. Push-button Adjustments.Re

3、move bakelite button and loosen screw two turns with a screwdriver or coin. Tune in the desired station by means of the right-hand control knob. Press push lever down as far as it will go and tighten screw. Release lever and put on push-button. Steps Connect the high side of test- oscillator to Tune

4、 test-osc. Turn radio dial Adjust the follow ing for max. peak output 1 Tuning condenser stator (oec.) in series with .01 mfd.t 455 kc Quiet point between 550-750 kc Cl, C2. C3. C4 (1st and 2nd I-F transformer) 2 Antenna lead (yellow) in series with 400 ohms 19.26 me FuU clockwise (out of mesh) “C”

5、band C6* (osc.) 3 Same as step 2 16.0 me 16.0 me Test oscillator signal C0* (ant.) See Note No. 1 4 Antenna lead in series with 200 mmf condenser 1,745 kc Full clockwise (out of mesh) “A” band C7 (oec.) * Use minimum capacity peak if two peaks can be obtained. * Rock gang slightly and check to deter

6、mine that C5 has been ad justed to the correct peak by tuning to approximately 14.09 me, where a weaker signal should be received. t Make test oscillator connection to lug mi tuning condenser stator (oscillator section) in series with .01 mfd. condenser. Note No. 1.Accurately tune receiver to the 15

7、.0 me test oscil lator signal. This signal will appear twice (14.09 and 15.0 me) as dial is turned. Use the higher frequency setting of the tuning con densers (gang furthest out of mesh). Note No. 2-Oscillator tracks 465 kc COMPILED BY M. N. BEITMAN. SUPREME PUBLICATIONS above signal on all bands. 133 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