Noblitt-Sparks-Industries-Inc-2598 电路原理图.pdf

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1、VOLUME R-20, MOST-OFTEN-NEEDED 1960 RADIO SERVICING INFORMATION ARVIN Industries Model 2598, Chassis 1.47900 nm I 6 4 I.F TRANSFORMER SIA-B SIGNAL TEST POINT TEST FREQUENCY SERIES V.PACiTOR *0 GENERATOR INPUT FOR 50MW OUTPUT 11.27 V. ACROSS 32n.) 1 455 KC .05 Mf 3000 MV 2 455 KC .05 ax f 60 MV % 45b

2、 KC .05 Mf 6 MV 4 1000 KC STANDARD LOOP 250 MV/rn ALIGNMENT PROCEDURE Output meter reading to indicate 50 milliwatts Output meter connection. Connection of generator ground lead. Generator Modulation. Position of volume control. .1.2 7V Across speaker voice coils .Common Ground .30% 400 cycles .Full

3、y clockwise Position of Variable Ge nerator F requency Dummy Antenna Generator Connections Trimmers -Adj. in order shown for Max. Output Function of Trimmer Open 455 Kc . 05 pf C1.B. A1 (Top of T3) I.F. A2 (Top of T2) I.F. A3 (Top of Tl) ) I.F. Open 1670 Kc Test Loop A4 Oscillator 1400 Kc 1400 Kc Test Loop A6 Antenna 600 Kc 600 Kc Test Loop Check Point Standard Hazeltine Test Loop Model 1150 or 3 turns of wire about 6 in diameter placed about one foot from the set loop. 21 收音机爱 好者资料库 RadioFans.CN