RCA-Victor-Co-Inc-1X591 电路原理图.pdf

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1、MANUAL OF 19S2 MOST-OFTEN-NEEDED RADIO DIAGRAMS RCA Victor “JvTorivcfl-. Modeis 1X591, 1X592 Lead Dress 1. Dress all heater leads down to chassis and away from all audio grid and plate wiring. 2. Dress power cord against chassis base. 3. Dress capacitor CIS against back apron. 4. Dress capacitor Cl

2、3 down to base alongside of shielded lead. 5. Dress output transformer leads down to chassis. 6. Dress capacitors C9 and C15 as direct as possible. 7. Dress dial lamp leads on top of chassis between 12SQ7 and 50L6GT tubes; below chassis, as short as possible to rectifier socket. 8. Dress excess loop

3、 leads away from tubes and clear of tun ing condenser. Chassis No. RC 1079K, RC 1079L Alignment Procedure Test-OsdUator. For all alignment operations, connect the low side of the tesl-oscillator to the receiver chassis, and keep the oscillator output as low as possible to avoid a-v-c action. On AC o

4、peration an isolation transformer (115 v./llS v.) may be necessary for the receiver if the test oscillator is also AC operated. Dial Calibration With the tuning condenser fully meshed, the dial pointer should be set to the first score mark at the left-hand end of the dial back plate The four score m

5、arks represent* Max cap. 600 kc 1400 kc min. cap. Steps Connect the high side of tesl-oscillator to Tune test-osc. to Turn radio dial to Adjust the following for max. output 1 12SK7 I-F grid through O.I mfd. capacitor 455 kc Quiet-point 1600 kc end of dial T2 (top and bottom) 2nd I-F trans. 2 Stator

6、 of Cl through O.I mfd. *T1 (top and bottom) Ist I-F trans. 3 Short wire placed near loop to radiate signal 1620 kc Min. cap. C4 (osc.) 4 5 1400 kc 1400 kc signal tC2 (ant.) 600 kc 600 kc signal L3 (osc.) Rock gang 6 Rpal slps 3, 4 and 5. Do not readjust T2 when lest oscillalor is connected to Cl. a

7、djusting C2 (ant. trimmer) ii is necessary to have the loop m the same position and spacing as they will ha e when assembled in the cabinet. SHOWN WITH TUNING CONDENSER AT MAX. CAPACITY (CLOSED) PHONO INPUT JACK _ RADIO PHONO SW. 600KC- OIAL BACK PLATE Cl ANT. C3 OSC. VOL. CDNT. SWITCH I Dial Indicator and Drive Cord Tube and Trimmer Locations Cl 7 : CZ 2-17 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN