Western-Auto-Supply-Co-4C11 电路原理图.pdf

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1、MANUAL OF 19S2 MOST-OFTEN-NEEDED RADIO DIAGRAMS WESTERN AUTO SUPPLY COMPANY IF Alignment: Factory Model 4C11 1. Connect the high side of the signal generator through a .10 mfd capacitor to pin 1 of the IF ampli fier (6BA6) tube. Apply a 400 cycle 30% modulated carrier of 455 KC at about 5,000 microv

2、olts. 2. Set the volume control at maximum and adjust the top and bottom core of the second IF transformer for maximum output as indicated on the output meter. 3. Connect the high side of the generator to pin 7 of the 6BE6 converter tube. Set the generator output at about 100 microvolts. 4. Adjust t

3、he top and bottom core of the first IF trans former for maximum reading. MODEL D-4II8 5. Set generator to 1400 KC. and tune in the receiver for maximum signal. Adjust the antenna trimmer for further increase in output level. 6. Tune receiver and generator to 600 KC. for maxi mum output and adjust an

4、tenna core (T-3) for further increase in output and best tracking. It may be neces sary to repeat above procedure. 6AV6 BA6 OET AUDIO A.VC. 6AS5 POWER AMP. 6BE6 CONVERTER RF Alignment: 1. Set the signal generator to 1620 KC at about 100 microvolts. 2. Turn the tuning control fully clockwise. (Gang o

5、pen). 3. Adjust the oscillator trimmer on gang for maximiun reading. See chassis view. 4. Connect the generator lead to the antenna input jack through a 50 mmf capacitor. 6BE6 CONVERTER AUOlO OUTPUT TRANS. T6 VIBRATOR -MALLORY NaS2S 14 AMP FUSE TO BATTERY 6.6V Antenna trimmer 6AV6 DET. AUDIO A.V-C.

6、(ON 250 VOCT SULE1 NOTE: VOLTAGE READINGS TAKEN BETWEEN POINTS INDICATED AND CHASSIS. VOLTABE INPUT - 6.6 VOLTS OUL LIGHT JACK (FOR REMOTE TUNER) TO TUBE FILAMENTS CI9-C CI9-B BATTERY 6.6 volts C-15 C 17 ESOmmfd i CI2, CI4. CI5,CI6.CI7 OAd RI2. Rl4. RI5 ARE ALL IN ONE COUPLATE. 收音机爱 好者资料库 RadioFans.CN