Noblitt-Sparks-Industries-Inc-8572 电路原理图.pdf

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1、* = - VOLUME R-18, MOST-OFTEN-NEEDED 1958 RADIO SERVICING INFORMATION ARVIN INDUSTRIES, Models 8571, 8573, Chassis 1.41100, Model 8572, Chassis 1.41300, is similar. IR5 /-V IU4 IU5 3V4 - CHASSIS OR CABINET - SHOWN IN A C POSITION - EXTERNAL CONNECTIONS TO BOARD. VOLTAGE READINGS SHOWN AT SOCKET PRON

2、GS ARE TO B- AND ARE TAKEN WITH NO SIGNAL, LINE VOLTAGE AT 117 V. AC, MEASURED WITH VACUUM TUBE VOLTMETER. RESISTANCE VALUES ARE IN OHMS kl,DOO, MEG-1,000,000. CAPACITANCE VALUES LESS THAN (I) ME IN MICROFARADS AND VALUES OF (!) OR,GREATER ARE IN MICROMlCROFARAOS (* *),UNLESS OTHERWISE INDICATED. fu

3、sing” ds _ .02 - f 1 C7A REOjGOMF i AA- 21 1 ON-OFF SW V- 3 R7 CIRCUIT FOMT OUMMY TO GENERATOR INWT FOR 05VWTT OUTFVT (04 VOLTS ACROSS VC.) 1 .OfeAT 455 KC 2000 UV 2 .os?*r4SSKc 60 J STANDARD LOOP AT tOOO KC 200 UV /M SPEAKER Type: Permanent magnet Size: 4 inch Voice: Coil Impedance 3.2 Ohms -BLUE B

4、ATT AC BROWN BLACK BATTl AC BLACK :aker LEAD ,KER LEAD ALIGNMENT PROCEDURE Output meter reading to indicate .05 watt across voice coil . . . 0.4V Generator ground lead connected.floating ground Position of Variable Generator Frequency Dummy Antenna Generator Connections Adjust Trimmers (In order sho

5、wn) Function of Trimmer Open Open 1400 Kc 600 Kc 455 Kc 1670 Kc 1400 Kc 600 Kc .05 |if Mixer Grid * Test Loop * Test Loop * Test Loop A1,A2,A3,A4 , A5 A6 Check Point I.F. Oscillator Antenna * Standard Hazeltine Test Loop Model 1150 or 3-turns of wire about 6 in dia meter placed about one foot from the set loop. 收音机爱 好者资料库 RadioFans.CN