RCA-Victor-Co-Inc-4C544 电路原理图.pdf

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1、MANUAL OF I9SS MOST-OFTEN-NEEDED RADIO DIAGRAMS 4-C-541 SERIES Chassis No. RC-1145 rca Victor The material on this page and on the page adjacent at right, is exact for Models 4C541. 4C542. 4C543. 4C544, 4C545. 4C547. Chassis RC-1145. Models 4C531. 4C532. 4C533. 4C534. 4C535. Chassis RC-1144 are si m

2、ilar electrically to RC-1145, but omit radio-phono switch S2 and outlet J2. Models 4X551. 4X552. 4X553, 4X554, 4X555, Chassis RC-1146, and Models 5X560, 5X562, 5X564, Chassis RC-1150, are also similar electrically to Chassis RC-1145 described on these two pages, but omit clock mechanism. 5| ID |3 oo

3、)o 0 jETd 3 n Q PHONOINPUT JACK 0 SZ 7 Alignment Procedure Test-OscillatorFor all alignment operations, connect the low side of the test-oscillator to the receiver chassis, and keep the oscillator output as low as possible to avoid a-v-c action. An isolation transformer (115/115 v.) may be neces sar

4、y for the receiver if the test-oscillator is also a.c. operated. VOLUME CONTROL TUNING Tube and Trimmer Locations Step Connect the high side of test-oscillator Tune test-osc. Turn radio dial to Adjust the following for max. output i 12BA61-F grid through .01 mfd. capacitor 455 kc Quiet- point 1,600

5、kc end of dial T2 (top and bottom) 2nd I-F trans. 2 Stator of Cl-B through .01 mfd. T1 (top and bottom) 1st I-F trans. 3 Short wire placed near loop to radiate signal 1,620 kc Max. clockwise osc. trimmer Cl-A 4 1,400 kc 1,400 kc signal ant. trimmer Cl-B 5 600 kc 600 kc signal osc. coil T-4 (rock gang) 6 Repeat steps 3,4, and 5 收音机爱 好者资料库 RadioFans.CN MANUAL OF I9SS MOST-OFTEN-NEEDED RADIO DIAGRAMS RCA Victor Series 4C541, Chassis RC-1145, and others (Material continued) 77 收音机爱 好者资料库 RadioFans.CN