Zenith-Radio-Corp-N512H 电路原理图.pdf

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1、VOLUME R-26, MOST-OFTEN-NEEDED 1966 RADIO SERVICING INFORMATION ZENITH RADIO CORPORATION MODELS N509C, F & W CHASSIS 5N13 AND N512A, H & J CHASSIS 5N12 VI I2BE6 CONV. LI cij 1 3 CIB V4 50C5 PWR.AMP. inov blu NOTES: ALL VOLTACES MEASUREO FROM CHASSIS TO POINTS INOICATED WITH AM VACUUM TUBE VOLTMETER.

2、 USE ONLY ZENITH NON-INDUCTIVE ELECTROLYTIC CONOENSERS FOR REPLACE- IF ANY OTHER TYPE OF ELECTROLYTIC IS USED IT WILL BE NECESSARY TO ADD C7 SNOWN IN OOTTED LINES. I F. TRANSFORMER NUMBERING STARTS WITH #1 TERMINAL AS FIRST TERMINAL CLOCKWISE FROM MARKER CODE, TERMINAL AS VIEWED FROM BOTTOM OF CHASS

3、IS. I.F. FREQUENCY 4SS KC TUNING RANGE S35 - 1620 KC ALL RESISTORS .20* TOLERANCE. 1/2 WATT. CARBON UNLESS OTHERWISE SPECIFIED DENOTES CHASSIS L-ffLfe t.5,1.4 L2, OSCILLATOR COIL s I 5 1 I i 1 1 1 I mi fm I I HU H is ad CIB, ANTENNA TRIMMER -CIO,OSCILLATOR TRIMMER 5N12 & SN13 CHASSIS LAYOUT ALIGNMENT PROCEDURE OPERATION T CONNECT OSCILLATOR Converter Grid DUMMY ANTENNA .5 Mfd. INPUT SIG. FREQUENCY 455 Kc. SET DIAL AT 600*Kc. TRIMMERS L3,L4,L5,L6 PURPOSE Align I.F. for max, output. One Turn Loop 1600 Kc. C1D Set Osc. to Dial Scale. 1600 Kc. 收音机爱 好者资料库 RadioFans.CN