Zenith-Radio-Corp-N506L 电路原理图.pdf

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1、VOLUME R-26, MOST-OFTEN-NEEDED 1966 RADIO SERVICING INFORMATION ON A f SECTION *=* LEAOS LINE UP A c ACCOROING TO THE c*,TCu PART NO AS SHOWN ON RI 105-43 234567 I-Th|- I a A.C 6 MARKER CODE * alternate parts whenai is NOT USED SEE SCHEMATIC BELOW 12 AV6 (V3) I CBB 160 f BLK ,150 V ALL VOLTAGES MEAS

2、URED FROM CHASSIS TO POINTS INDICATED WITH A VACUUM TUBE VOLTMETER. USE ONLY ZENITH NON-INDUCTIVE ELECTROLYTIC CONDENSERS FOR REPLACEMENT. IF ANY OTHER TYPE OF ELECTROLYTIC IS USED IT W|LL BE NECESSARY TO ADD C7 SHOWN IN DOTTED LINES. I.F. TRANSFORMER NUMBERING STARTS WITH #1 TERMINAL AS FIRST TERMI

3、NAL CLOCKWISE FROM MARKER CODE, TERMINAL AS VIEWED FROM BOTTOM OF CHASSIS. I.F. FREQUENCY 455 KC TUNING RANGE 535 - 1620 KC . , T2,2ND I.F. TRANSFORMER 50C5 (V4) L5, PRIMARY BOTTOM-, , /gg L6, SECONDARY TOP| / A. C. INTERLOCK Tl, 1ST I.F. TRANSFORMER L3, PRIMARY BOTTOM L4, SECONDARY TOP -LI, WAVEMAG

4、NET CID, OSCILLATOR TRIMMER- CIB, ANTENNA TRIMMER, VOLUME CONTROL * ALIGNMENT PROCEDURE OPERATION CONNECT OSCILLATOR TO DUMMY ANTENNA INPUT SIG. FREQUENCY SET DIAL AT TRIMMERS PURPOSE I Converter Grid .5 Mfd. 455 Kc. 600 Kc. L3,4,5.6 For I.F. Align ment. One Turn Loop Coupled Loosely to Weve Magnet Set Oscillator to Diel Scele Align Antenne Stege 159 收音机爱 好者资料库 RadioFans.CN