Noblitt-Sparks-Industries-Inc-145000 电路原理图.pdf

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1、VOLUME R-19, MOST-OFTEN-NEEDED 1959 RADIO SERVICING INFORMATION ARVIN i Model 2585 Chassis 1.45000 VOLUME TONE ON-OFF R6 CfCfp y TZ JZ C/4/ R8 R7 Ip oo/p T T I2BE6 I2BA6 5005/ I 35W4 I / / R5 Rl L2 _ / C5 C7 A6ED t*_ EnZAve 47V 12 r $ * 1 r1-! T I Tj 1 )l SR I A_ I I 12 5pOK TONE OSO.COM. BOTTOM VIE

2、W “ B- METAL CHASSIS EXTERNAL CONNECTIONS TO PRINTED BOARD. VOLIMES MEASURED WITH A V.T.V.M. lOSTMCE VALUES ARE IN OHMS K. 1,000,MEG-I.OOOl 000 L CMOTANCE VALUES LESS THAN (I) ARE IN MICROFARADS UA ES OF-JlJ OR GREATER ARE IN MICROMICROFARADS U*A UNLESS OTHERWISE MDICATED. DUMMY MPUT FOR.05 WATT OUT

3、PUT INPUT FOR .5 WATT OUTPU TO GENERATOR (tt VOLTS ACROSS V-C-l I.BS VOLTS ACROSS VC J GSuf AT 455 KC S 000 UV 5000 U VOLTS 05ae/AT 455 KC STANDARD LOOP AT 1000 KC N 12 PILOT LAMP ALIGNMENT PROCEDURE Output meter connection.Across speaker voice coil Connection of generator ground lead.Floating groun

4、d Position of Volume Control. Fully clockwise Position of Variable Open Open 1400 600 Frequency of Generator 455 1670 1400 600 I.F. Oscillator Antenna Generator Output Connection Pin 7 12BE6 * Test Loop * Test Loop * Test Loop * Standard Hazeltine Test Loop Model 1150 or 3 turns of wire about 6 in d

5、ia meter placed about one foot from the set loop. The alignment procedure should be repeated in the original order for greatest accuracy. Always keep the output from the signal generator at its lowest pos sible value to make the AVC action of the receiver ineffective. Dummy Antenna Trimmers Adjusted in Order Shown for Maximum Output Al, A2, A3, A4 A5 A6 Check Point Functions of Trimmer 12 收音机爱 好者资料库 RadioFans.CN