Sylvania-Electric-Products-433 电路原理图.pdf

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1、MANUAL OF 1953 MOST-OFTEN-NEEDED RADIO DIAGRAMS SYLVANIA CHASSIS used in Model 433 Radio Intermediate Frequency 455 KC used in Model 433 Radio v 4 AC/DC BATTERY SWITCH CHASSIS REMOVAL Remove control knobs, station selector slide: pointer and base. Remove station selector chass pointer by gripping it

2、 with either a bent 3. To fa wire hook or needle nose pliers inserted trol u in the center slots. tor U1 Remove the four screws securing chassis Line and dial caps to the cabinet. Note assem- press bly of the handle and dials,and that chassis slides through grooves in cabinet. The chassis may now be

3、 removed. To facilitate calibration,turn volume con trol until it clicks Off and Station Selec tor until tuning capacitor is fully meshed. Line up indicator marks accordingly, and press on knobs. V3 I US DET.AVC, 1ST AU0IO AMR . 4-19V 3V4 AUDIO OUTPUT r CT4 C3 CI7 C80X_ 3: ,002 esjpf PRINTED CIRCUIT

4、 4J RIS . 3.3 : MEC. 4 4-wU*5_ +IIDV. 100 XL I LINE CORO PLUS tCI3 r AC-DC/9ATTERY SWITCH SW2 1V BATTERY I PLUG 1 (WIRE SIDE VIEW) 1. VOLTAGES MEASUREO WITH 20,000 OHM/VOLT METER To NEGATIVE B? SWITCH SW2 SET TO AC/DC POSITION LINE VOLTAGE H7V. AC, NO SIGNAL INPUT. 2. Coil RESISTANCES ARE AVERAGE VALUES. INTERMEDIATE FREQUENCY 4SSKC. 5- Isv aand79v8 - 4. VOLTAGES OR RESISTANCES NOT SHOWN WHERE TOO SMALL OR WIDELY VARIABLE. 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