Olympic-Radio-and-Television-Inc-407 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 con densers. 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 i

2、nches in diameter (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 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. AC INPUT * _ALIGNMENT PROCEDURE CHART_ “SET US”? IgTJIgS-lTVI RECEIVER DIAL lWSTC TOLUJOING TON MAXIMUM OUTPUT STIR SIGNAL GENERATOR GENERATOR TO_ (KEEP SIGNAL FROM SIGNAL

5、GENERATOR TO“ TO- AS LOW AS POSSUM P 1 RANGOON DENSER IN 455 KC. CL0CKW6E POSITION. (CONOCNSER PLATES H FULLY OPEN) AS LOW AS POSSIBLE.) L2 ANO LI IN SAME ORDER (I F TRANSFORMER) USE RAOIATED SIGNAL _CT2 (OSCILLATOR TRIMMER) CTH ANTENNA TRIMMER) REPEAT STEPS 2 AND 3 TUBE a TRIMMER LAYOUT REF. NO. DE

6、SCRIPTION PART NO. L3 Oscillator Coil CL429I PCI Printed Circuit PC4388 Rl Resistor, 2.2 megohms 20%, 1/2* REB225M R2 Volume Control, 2 megohms (with switch PT4397 R3 Resistor, ISO ohms 20%, REBI5IM R4 Resistor, 10,000 ohms 10%, REBI03K R5 Resistor, 6800 ohms I0%4 l/jw REB682K R6 Resistor, IS ohms, 2w, Fusible RE4393 Tl Transformer, IF (455 kc) TR4392 88 收音机爱 好者资料库 RadioFans.CN