Olympic-Radio-and-Television-Inc-9-435W 电路原理图.pdf

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1、收音机爱 好者资料库 RadioFans.CN MANUAL OF 1953 MOST-OFTEN-NEEDED RADIO DIAGRAMS OLYMPIC RADIO 9-435V and 9-435W, continued. ALIGNMENT INSTRUCTIONS Equipment required: Modulated r-f signal generator, output meter, insulated screw driver, two .Imfd. 400 V. Condensers one 400 ohms resistor. To align the receiv

2、er it is necessary to remove the chassis from the cabinet, check thot the pointer is horizontal and coincides with the two horizontal reference lines on the dial. In this position the condenser should be completely closed. Turn volume control to maximum and connect the output meter across the voice

3、coil. Then connect the low side of the signal generator to the receiver chassis through a .1 mfd. condenser and keeping the output as low as possible proceed in the sequence as shown on the alignment chart. To insure alignment a radiated signal will be required during part of the alignment procedure

4、. To radiate a signal connect a loop of about 6 to 8 diometer, (one turn of #14 or #12 wire) across the output of the signal generator and place this loop parallel to the loop of the receiver to be aligned, at a distance of about 8 or 10. ALIGNMENT PROCEDURE CHART STEP SET BAND SWITCH ON CONNECT HIG

5、H SIDE OF SIGNAL GENERATOR TO- SET SIGNAL GENERATOR TO- TURN RECEIVER DIAL TO- ADJUST THE FOLLOWING FOR MAXIMUM OUTPUT. (KEEP SIGNAL FROM SIGNAL GENERATOR AS LOW AS POSSIBLE). 1 B.C. R.F. SECTION OF VARIABLE CONDENSER OR PIN 4 OF THE I2SK7 TUBE IN SERIES WITH A .1 MFD. 400 VOLT CONDENSER. 455 KC. FU

6、LL CLOCKWISE POSITION (CONDENSER PLATES FULLY OPEN). L4 AND L3 (2nd I.F. TRANSFORMER) 2 B.C. R.F. SECTION OF VARIABLE CONDENSER OR PIN 8 OF THE I2SA7 TUBE IN SERIES WITH A .1 MFD. 400 VOLT CONDENSER. 455 KC. FULL CLOCKWISE POSITION (CONDENSER PLATES FULLY OPEN). L2 AND LI (1st. IF TRANSFORMER) 3 B.

7、C. REPEAT STEPS 1 AND 2 | 4 B.C. USE RADIATED SIGNAL (CONNECT BOTH SIDES OF SIGNAL GENERATOR TO RADIATION LOOP). 1600 KC. 1600 KC. (160 ON DIAL) C 3 (OSCILLATOR TRIMMER) 5 B.C. 1400 KC. MAXIMUM SIGNAL (APPROX. 140 ON DIAL) C 1 (ANTENNA TRIMMER) 6 B. C. 600 KC. MAXIMUM SIGNAL (APPROX. 60 ON DIAL) C5

8、(PADDER) ROCK VARIABLE FOR MAXIMUM SIGNAL 7 B. C. REPEAT STEPS 4,5, AND 6 | 8 S.W. ANTENNA WIRE ON LOOP IN SERIES WITH A 400 OHM RESISTOR 15 MC. 15 MC. (APPROX 15 ON DIAL) C4 (OSCILLATOR TRIMMER) SECOND PEAK FROM TIGHT POSITION C2 (ANTENNA TRIMMER) 9 S. W. 5.5 MC. RESONANCE (APPROX. 5.5 ON DIAL) CHECK THAT POINTER (AT RESONANCE) COINCIDES WITH 5.5 MC. CALIBRATION POINT ON DIAL. IF NOT REPEAT STEP 8. CAUTION: FOR 220 VOLT OPERATION USE ADAPTOR CORD, PART Ng LC-53Q. 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN