Westinghouse-Electric-Corp-V-2157-14 电路原理图.pdf

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1、MANUAL OF 19S4 MOST-OFTEN-NEEDED RADIO DIAGRAMS YJ/po t 1 T1 CrVl mi CP Models H-391T5. H-392T5, H-394T5. o 1/ A XJ. Ax vF U. and H-404T5. Chassis V-2157-14. Similar Models are H-420T5. H-421T5. using Chassis V-2157-13. I2BE6 i2BA6 l?AV6 50C5 CONVERTER ICT IF OET. ft I ST AUDIO OUTPUT I SI IF TRANS.

2、 . . Flqj 2ND i* TRANS. 61 ZI z. Zl R8 7rrf .f4,0K R4,o“ f50 OUTPUT TRANS. T50-2j|g UAVb I28E6 I2BA6 SOCS _/YA_A_A_ 43 3 4 3434 j CLOCK ) I ! MOTOR sw 1. ALL V0UA6ES MEA9URC0 FROM COMMON NEGATIVE USING A 20,000 OHM / VOLT METER. UNE V0L1MC SET AT 117 V.A.C. READINGS SHOULD 6E AS SHOWN 20%. 2, ALL CA

3、PACITANCE VALUES IN MFC. ANO ALL RESISTANCE LUES IN OHMS. UNLESS OTHERWISE SPECIFIED. -NCj 24 T5 -1 REMOVAL OF CHASSIS FROM CABINET 1. Remove the four control knobs by pulling them off the shafts. 2. Remove the transparent shield which protects the radio dial pointer by pressing the left edge (as vi

4、ewed from the front) toward the hub of the dial pointer. This unlocks the shield from the cabinet. 3. Pull the dial pointer off its shaft. 4. Remove the two screws from the bottom of the cabinet, and slide out the chassis. ALIGNMENT Connect Signal Signal Generator Radio Generator to Frequency Dial A

5、djust for Maximum Output Stator of ant. tuning capacitor (A) 455 kc. Minimum Top and bottom slugs of T2 and Tl through a 200 mmf capacitor capacity in order given* Same as step 1 1625 kc. Minimum Oscillator trimmer (D) Radiated signal 1400 kc. capacity 1400 kc. Antenna trimmer (B) */ is recommended that.a fiber aligning tool that snugly fits the slot in the powdered iron core be used to prevent chipping of the slot. 147 收音机爱 好者资料库 RadioFans.CN