Admiral-742 电路原理图.pdf

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1、VOLUME R-20, MOST-OFTEN-NEEDED 1960 RADIO SERVICING INFORMATION ADMIRAL Chassis 7Q1, Models 742 and 743 (?) T1 (C, 2N4I0 -t 1ST. IF. “ Q2 2N410 *1V 2 CR2 _1C!4 S DETECTOR JU R3 v T D0 M *2 I5% 560% Rij ia 5000 220 jiLcie -i. DV -5-1 SIX +T liVOLT I lATTERIEfl 2N4I2 OSCILLHOR /F 2N406r1 Tl -ooll 2N40

2、8 OUTPUT s 1 06 /f R26 |/ WW- 10 _MJ_ i03V S ! D UE |T5 C6 7 E ,Q2 11 3* HW i-ClB S Rl9 Tbi 5000 .if ip, * I : 3imJ fe a I 61 | 4 -rj - _ c RS 1 VR9 ”* A 10B0A | K C!l j 9o ; -1 :R23 i R24 :sj* 2N408 OUTPUT 560 Q7 . L2 lA izo la T * Ic ifiB in.:1 IF * 45SKC - CHASSIS CROUNO WL0I CONNOR GROUND * MATC

3、HED PAIR CAPACITOR VALUES IN MICROFARADS UNLESS B7HERWISE SPECIFIED /THIS HEADING MAT DE DV OR SLKHTU MECATIVE ALL VOLTACES TAKEN IITN R VTVN COLLECTOR I TYPE (PNP) * EMITTER TOTAL CURRENT DRAIN WITH NO SICNAL AND VOLUME CONTROL SET AT MINIMUM-B SMi )DE DOT COLOR COOES Tl ORANCE eR 3? TZ DROIN T5 RE

4、D Tl, T2 8T3 DOTTOM VIEW EHI FRONT t 1N295 /T 2N411J osc mixerI OUTPUT ( 1MATCHED PAIR, J 2N410 rNDIFl VOtegik V /toooKt. reV XD s A 55 Kc. View of Etched Wiring Board Groy area represents etched wiring, black symbols and lines represent components on opposite side REMOVING CHASSIS FROM CABINET 1. R

5、emove the two knobs plus the two chassis mount ing screws at the bottom of the cabinet if used. 2. Unsnap back cover and remove battery case. rw DASHED LINE INDICATES ADJUSTMENT FROM REAR ONLY Transistor and Alignment Location; 3. Remove the two nuts at the right corners of the chassis. 4. Keeping one hand on front escutcheon, slide chas sis to right to remove from cabinet. NOTE: The left side of the chassis (from rear) is held only by two flanges on the escutcheon and the escutcheon, in some sets, is held only by the chassis under the flanges. 12 收音机爱 好者资料库 RadioFans.CN