RCA-Victor-Co-Inc-65AU 电路原理图.pdf

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1、MANUAL 1947 MOST-OFTEN-NEEDED RADIO DIAGRAMS RCA Victor Test OsctUfttor.Connect high ude of test oscillator as shown in chart Connect low side through a .01 mf capitor to common B. Keep the output signal as low as possible to avoid a-v-c action. Output Meter.Connect meter across speaker voice coil.

2、Turn volume control clockwise to radio maximum high position (3) for alignment. 65U, 65AU Chassis No. RC1017A Dial Pointer Adjustment.Rotate tuning condenser fully counter-clock- wi8e(plates fully meshed). Adjust indicator pointer to left (max. cap.) mark on dial back plate. CAUTION.CLOSE TUNING CON

3、DENSER PLATES COMPLETELY (C-C-W) BEFORE REMOVING CHASSIS FROM CABINET. Take off both wooden strips on bottom of cabinet by removing wood- screws before loosening chassis bolts. L- 16 X- 56 X -4- 0.8X -4- too I 600KC I 600- 4-55KC 1 4.55KC I 4-55 12SA7 CONVERTER Connect Uie high tide of test- otcilla

4、tor to I.F. grid* in teriet vnUi .01 mfd. Itt Dit. grid in teriet with .01 mfd. Tune tett-oee. to Turn radio dial to Quiet point 1*600 kc end of dial Adjuat the follow ing for max. peak output L8 and L9 2nd LF. trantformer L6 and L7 Itt IF. trantformer NOTE.-ANTENNA LOOP AND RECORD CHANGER MUST BE I

5、N CABINET Antenna terminal in teriet with 220 mmfd. Radiated signal 1300 kc Repeat steps $ and 4. Gang at miwitwtim Signal Frequency C19 (osc.) C17 (ant.) *Do not readjust L8 or L9 when test oscillator is connected to 1st Det. 12SK7 I.F AMPLIFIER 12SQ7 2*!PDET.-AVC-AUDIO 50L6-GT OUTPUT APPROX. CAIN

6、USING CHANAL /7777 indicates CHASSIS COMMON GROUND B WIRIN OSC COIL TERMINAL DETAIL L6 L7 ! I I1A UA I I-J X CCI6 _Lc19 J.C24 “8-13*72-17 -1“ 5.6 3 V. Bias for GAIN DATA I PICKUP ) 455 KC atafi I. F. TRANS. 1 RIO -VOL. CONTROL 0.5 MEG, STOP AT 50 K. o:- SWITCH SHOWN IN EXTREME CLOCKWISE (OFF) POSITI

7、ON ANO VIEWED FROM FRONT OF CHASSIS. SWITCH POSITIONS 1. OFF 2. RADIO LOW 3. RADIO HIGH j 4. PHONO LOW I 5. PHONO HIGH A7 zA zAz 7A2 35Z5-GT , RECTIFIER .DIAL LAMP |)mAZDA*51 VOLTAGES SHOULD HOLD WITH|N20% WITH II7V. OMF RATED SUPPLY VOLTAGE ALL VOLTAGES ARE MEASURED WITH RESPECT TO COMMON -B. 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