Olympic-Radio-and-Television-Inc-404 电路原理图.pdf

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1、VOLUME R-17, MOST-OFTEN-NEEDED 1957 RADIO SERVICING INFORMATION OLYMPIC RADIO output meter; insulated screw-driver, two .1 mfd 600 volt condensers. To insure proper alignment, a radiated signal will be required during part of the alignment procedure. To radiate a signal, connect a loop of about 6 in

2、ches in diameter (one turn of #14 or #12 wire) across the output of the signal genera tor, and place this loop parallel to the loop of the receiver to be aligned, at a distance of about 10 or 12 inches. Connect the output meter and signal generator as follows: Output meter: Connect across the speake

3、r voice coil and turn the volume control to maximum (extreme clockwise posi tion). Signal generator: When the generator is not used to radiate a signal, connect the low side to the receiver chassis through a .1 mfd condenser, clip the high side through a .1 mfd, 600 volt condenser to the point at wh

4、ich signal injection is required, and keep the output as low as possible. Proceed in the sequence shown in the alignment chart. When the alignment process is completed, turn the tuning knob shaft until the tuning condenser plates are full meshed. Replace the chassis inside the cabinet, insert and ti

5、ghten the screws previously removed, and mount each knob on its shaft at the side of the cabinet. With the condenser plates fully meshed, place the tuning knob on its shaft so that the horizontal line at the 55” end of the knob is adjacent to the indicating marker on the cabinet. -ANTENNA r-OSCILLAT

6、OR TR1MMER TRIMMER OFF-DN SWITCH a VOLUME CONTROL V LI (UNDERSIDE OF CHASSIS) ALIGNMENT PROCEDURE CHART CONNECT HIGH SIDE OF SET SIGNAL TURN RFCF.VFR ni*. ADJUST THE FOLLOWING FOR MAXIMUM OUTPUT STEP SIGNAL GENERATOR GENERATOR TO _ (KEEP SIGNAL FROM SIGNAL GENERATOR _TO*_TO-_AS LOW AS POSSIBLE.) ANT

7、ENNA SECTION TUNING CONDENSER IN 455 KC. SERIES WITH .1 MFD COND. USE RADIATED SIGNAL FULL COUNTER CLOCKWISE POSITION (CONDENSER PLATES FULLY OPEN) L2 AND LI 11)1 SAME ORDER (I.F TRANSFORMER) CT2 (OSCILLATOR TRIMMER) CT1 (ANTENNA TRIMMER) REPEAT STEPS 2 AND 5 Frequency Range: 540-1620 KC Power Requirement: 105-120 volts alternating current 60 cycles, or 105-120 volts direct current. Power Consumption: 25 watts. 87 收音机爱 好者资料库 RadioFans.CN