Emerson-Radio-and-Phonograph-Corp-G-1701 电路原理图.pdf

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1、VOLUME R-22, MOST-OFTEN-NEEDED 1962 RADIO SERVICING INFORMATION Emerson MODEL: G-1701 CHASSIS: 120578 MODEL: G-1702 CHASSIS: 120579 CIRAMJC CAPACITORS. CAPACITY IN MICRO- MICROFARADS 4- TUBULAR CAPACITORS, CAPACITY IN MICROFARADS. risistors in ohms (k -iooo) and i watt unless noted ARROWS AT CONTROL

2、S INDICATE CLOCKWISE ROTATION T INDICATES TOP CORE B INDICATES BOTTOM CORE IN I F TRANSFORMERS RESISTANCES SHOWN ON COILS ft TRANSFORMERS ARE DC RESISTANCES. 12.JVIAC 24.6VSACS STVIAC) BCV ACI HEATER STRING P R I N T E D BOARD SPEAKER REPLACEMENT 1) Remove line cord plug from wall outlet and remove

3、bock from cabinet. Remove chassis. 2) Apply heat to plastic retaining studs used to se cure speaker to cabinet and remove speaker. 3) Install new speaker in cabinet. Secure speaker by re-heating original mounting studs and pressing excess plastic down over rear of speaker frame. SERVICING OF PRINTED

4、 BOARDS To remove defective components one of several methods may be used. A recommended method is to cut close to the body of the defective component and solder the new part to the re maining leads. Another method is to apply heat at the junction point of the component wire lead and the printed boa

5、rd and lift out the component. If the wire lead is bent over, first heat and pry lead wire up. A defective component with many terminals may be removed by clipping into several parts and removing a small section at a time. 50C5 AUD OUT. R6 - WV- -e 150 t . v-4 y N- R-7 1500 - 35 W4 RECT INTERLOCK C-

6、6 .047 600 V, + fez#* V-4 ov + / T2 2*&- i.F 455 KC TOP8BOT.) , 1 12AV6 DETECT. AUD. AMP l V-3 | B-.6 e up OR 1201 (i fl 1 4 1 I T1 1T I F 485 KC iTOPBBOT) MV - | f2.2MEG- 12BE6 CONVERT. ETCHED PRINTED CIRCUIT CHASSIS (BOTTOM VIEW) Q Q R 6 -vw* 150 455 KC IT0P880T) T-2 zno. | p 455 KC (TOP 8 80T) i R-2 * 2.2MEG 12 AV6 DETECT. AUD. AMP Ib20 KC. o alternate CONTROLS USED WITH CHASSIS No 120579 TUBE LOCATIONS AND ALIGNMENT POINTS 19 收音机爱 好者资料库 RadioFans.CN