Philco-Radio-and-Television-Corp-41-256 电路原理图.pdf

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1、MANUAL OF 1941 MOST POPULAR SERVICE DIAGRAMS Operations in Order SIGNAL GENERATOR RECEIVER Output Connections to Receiver Dial Setting Dial Setting Control Settings Adjust Compen sators in Order 1 High side to No. 3 terminal loop panel 455 K. C. 580 K. C. Vol. Max. Range Switch S. W. Positions I5A,

2、fSB 38A, 43A 2 Use loop on generator 1500 K. C. 1500 K. C. Vol. Max. Range Switch Broadcast 27, 7A 3 Use loop on generator 580 K. C. 580 K. C. Vol. Max. Range Switch Broadcast 25 4 Use loop on generator Perform operation No. 2 again 5 Use loop on generator 12 M. C. 12 M.C. Range Switch SW-I 27B, 8A

3、6 Use loop on generator 18 M. C. 18 M. C. Range Switch SW-2 27A, 8 ELECTRIC PUSH-BUTTON TUNING: The automatic tuning mechanism of each model is identical and consists of eight (8) elec tric tuning push-buttons, seven (7) of the push-buttons are used for selecting broadcast stations, and one as the p

4、ower control (On-Off switch). When aligning the R. F. padders a loop is made from a few turns of wire and connected to the signal generator output terminals; the loop is then placed two or three feet from the loop in the cabinet. Do not remove the receiving loop from the cabinet. It is necessary whe

5、n adjusting the padders, that the receiver be left in th* cabinet. After connecting the aligning indicator, adjust the compensator* in the order shown in the tabulation below. Locations of the compen sators are shown on the schematic diagram. If the output meter pointer goes off scale when adjusting

6、 the compensators, reduce the strength of the signal from the generator. NOTE ADIAL 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: With the tuning condenser closed (maximum capacity

7、), set the dial pointer on the extreme left index line at the low frequency end of the broadcast scale. The arrangement of the drive cable in this position is shown in the schematic. Model 41-3.56, Gode. 121 iPumiLOcD 100 COMPILED BY M. N. BEITMAN. SUPREME PUBLICATIONS PART LOCATIONS UNDERSIDE OF CHASSIS 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN