Admiral-Y3137 电路原理图.pdf

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1、VOLUME R-22, MOST-OFTEN-NEEDED 1962 RADIO SERVICING INFORMATION A TT1VT TRAT CHASSIS 4R3 -/VJL/IVJ.1 1 VTyJLj MODELS Y3133 Y3137 12AU6 CONVERTER 12AV6 detectdr-af amp. T1 V2 M3 COUPLATE 50C5 OUTPUT V3 4“ PM HUE r T2 tirr u AC mr M WATTS NOTES: IF*4S5KC. ETCHED CIRCUIT CNOUNO. All VOITACES 10%. TAKE!

2、 WITH IISPECTII ETCHED CIRCUIT CROUNI. WITH VTVN. NO SiCNAl.VOl.COlTIOl MINIMUM. UNLESS OTHERWISE INDICATED-. RESISTORS IN OHMS. 1/?WATT.10%: All CAPACITORS IN Mf. 20%. VOLTAGE PRECAUTION The etched circuit common ground of this receiver is connected directly to one side of the power line. To pre ve

3、nt damage to etched wiring, do not place chassis directly on a metal bench, or other metal objects. Vihen taking voltage or resistance measurements, use test prods with needle points. ALIGNMENT REMOVING CHASSIS FROM CABINET Unplug and remove back. Remove the knobs from the front of the cabinet. Remo

4、ve the screw outside from under the Tuning knob and the screws inside that hold the Volume control bracket to the cabinet. Remove etched circuit board support at rear of chassis. Chassis will now slide out. ALIGNMENT PROCEDURE a. Use an isolation transformer or connect a .1 mf. capacitor in series w

5、ith low side of signal gen erator. CAUTION: DO NOT CONNECT AN EARTH GROUND WIRE DIRECTLY TO CHASSIS. b. Set Volume control full on. c. Connect output meter across output secondary. Disconnect speaker, use 3.2 ohm load. d. Use lowest setting of signal generator capable of producing adequate indicatio

6、n on lowest scale of output meter. e. By using alignment tool (Part No. 98A30-7) both IF transformer slugs can be aligned f. Repeat adjustments to insure good results. St* p Connection of Signal Generator Signal Gen. Frequency Receive r Gang Setting Adjustment Description Adjustment 1. Through a . 1

7、 mf capacitor to pin 1 of the 12AU6 (Converter) tube. 455 KC Gang fully open IF Primary IF Secondary and for maximum output 2 Same as STEP 1. 1620 KC Gang fully open Oscillator Trimmer for maximum output 3 Radiated Signal. Loop of several turns of wire, or place generator lead close to receiver loop for adequate signal pickup. 1400 KC Tune in generator signal Antenna Loop Gimmick for maximum output (Rock gang for optimum results) 3 收音机爱 好者资料库 RadioFans.CN