RCA-Victor-Co-Inc-4RG3 电路原理图.pdf

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1、VOLUME R-24, MOST-OFTEN-NEEDED 1964 RADIO SERVICING INFORMATION RCA VICTOR 4RG1 Series, Models 4RG11, 4RG12, 4RG16, Chassis RC-1208D 4RG3 Series, Models 4RG31, 4RG34, Chassis RC-1208H 2N1526 n CONV OSC COIL 02 2NI524 (ST IF AMR 2N1524 2 NO IF AMR 2N408 DRIVER C 56 V 05 2N408 OUTPUT _ V, _CRN L -,5 Y

2、? . 5 B V EARPHONE l004 | jac* -0 2V-* _!?_ 104 V I 4 2I iiai Lai4v*. 1 06 f2N406 OUTPUT .I4v FERRITE 15-16.5 LIA/B ANTENNA Connd High St*p Sid* of Signal Generator to Anlonna gang stator CIA thru 01 mf capacitor Short wiro placed near antenna for rodiated signal Signal Gen. Output Dial Pointer Sott

3、ing 455 kc Gong fully open Repeat Steps 1, 2, on 3 1620 kc Gang fully Open 1400 kc 1400 kc (rock gang if nocossary) 600 kc 600 kc (rock gang) Adjust for Max. Output T4 (3rd l-F) T3 (2nd l-F) T2 (1st l-F) Oscillotor trimmer C5 Antenna trimmer C2 6 VOLTS VS 354 (4 REQD) I00MF J RESISTANCE VALUES ARE I

4、N OHMS K-1000 ALL CAPACITANCE VALUES LESS THAN 10 ARE IN MF, THOSE ABOVE I 0 ARE IN MMF EXCEPT AS NOTED. _ VOLTAGES MEASUREO WITH VOLTOHMYST FROM BATTERYffr) 6 SHOULD WlTHIN 20% WITH A NEW BATTERY TI OSC COIL . T2 TO T4 WCEX DOT 1 2 6 | |5 4 _*| 3 TERM VIEW tc iv Ql TO 06 E J: xy COLOR DOT TERM. VIE

5、W Repeat Steps 5. 6, and 7. CHASSIS REMOVAL Remove timing knob. Open case Remove two screwsone at each cornerlocated near antenna. Remove two screws located between positive battery contacts. If speaker is connected to board by wires, unsolder wires at board Lift slightly the end of each board that was secured by screws and slide boards out of slots which hold op- posits ends Wiring Side (Removed from Case) 37 收音机爱 好者资料库 RadioFans.CN