Philco-Radio-and-Television-Corp-40-217 电路原理图.pdf

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1、收音机爱 好者资料库 RadioFans.CN MANUAL OF 1940 MOST POPULAR SERVICE DIAGRAMS RECEIVER CIRCUIT ADJUSTMENTS Models 40-215, 40-217 NOTE A DIAL CALIBRATION: In order to adjust the receiver correctly the dial must be aligned to track properly with the tuning condenser. To adjust the dial, proceed as follows: Wit

2、h the tuning condenser closed (maximum capacity), set the dial pointer on the extreme left index line at thi low frequency end of the broadcast scale. The arrangement of the drive cable and dial pointer is shown NOTE C If two peaks (signals) are observed on the aligning meter when adjusting the osci

3、llator paddet No. 29B, tune the padder to the second peak from the maxi mum capacity position (screw all the way in). NOTE D If two peaks (signals) are observed on the aligning meter when adjusting the loop padder 2A, tune the padder to the first peak signal from the maximum capacity position (screw

4、 all the way in). When adjusting the padders to this first peak roll the tuning condenser (rock) slightly back and forth to obtain the meximum readings on the aligning meter. INSTALLATION Of DRIVE COA05 INTER AT LOW fRtOUENCr CNO O OIAI COMPILED BY M. N. BEITMAN, SUPREME PUBLICATIONS 收音机爱 好者资料库 RadioFans.CN