Detrola-Radio-and-Telev-Corp-297 电路原理图.pdf

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1、MANUAL OF 1941 MOST POPULAR SERVICE DIAGRAMS !A7 wr IMS ICS ) tss KC INS) 4SSAC lAZ /Vi ! f0S Model 295-1 Model 295 Detrola Corporation Detroit, ttichigan ALIGNMENT PROCEDURE I F. Frequency 455 KC. Set Range 540-1580 KC. Connect the test oscillator, or signal generator, to the set as follows: Connec

2、t the hot side of the signal generator to the grid of the 1A7 tube, and the ground side to the terminal on the back of the chassis. An output meter should be con nected across the voicfe coil leads of the speaker to indicate resonance Align the I.F. trimmers at 455 KC for maximum meter reading. Adju

3、st the trimmer on the back of the variable condenser at or near 1400 KC at full volume on a weak broadcast signal. When aligning the set do not set-the receiver on or near a metal work bench or other large metal object, as It will affect the tracking of the receiver. 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN