Emerson-Radio-and-Phonograph-Corp-120472 电路原理图.pdf

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1、VOLUME R-20, MOST-OFTEN-NEEDED 1960 RADIO SERVICING INFORMATION TO REMOVE BATTERIES PRESS EACH ONE BACK AGAINST ITS SPRING AND LIFT UP FIRMLY REPLACE RAOIO BATTERIES WITH LEAKPROOF C SIZE EVEREADY NO. 935 OR RAY-0VAC NO ILP L RAOIO BATTERIES MUST BE INSERTED With button end up as illustrated REPLACE

2、 CLOCK BATTERY WITH LEAKPROOF D* SIZE EVFREAOY NO. 950 OR RAY-O-VAC I NO 2LP CLOCK BATTERY MUST BE INSERTED WITH BUTTON END UPAS ILLUSTRATED TO START CLOCK SHAKE SET GENTLY FIG. 1 - BATTERY ND 19074 01 *“T11 0,SEVCD OnMOOlO 1 1 t U J I T i if ONE OF THESE TRANSISTORS 10 7 OR Q-B) I BECOMES DEFECTIVE

3、 .REPLACE BOTH OF THEM FIG. 1 - SCHEMATIC DIAGRAM, CHASSIS 120374 (VOLTAGE READING CONDITIONS ON PfcGE 3fc) i *S* J 600KC - R-23 5601 * 4 BATTERY - CONTACT BOARD ll 4SSKC 21 c-5 I* *Jl6MFD VAR CAP ML. p. 22 *r a* .az*m tkS c-4 SP 004 T.Jj.r I1 K If 43ri -A8 C-7 HMED . 45SKC JI 5-4ic * c-ioX SMFDr R-

4、14 sZM*, ZK-f jrjSK tfCVl t / NOTE # REFER SCHEMATIC, FIG.I.PG2, FOR VALUES EXTERNAL LISTENING ATTACHMENT JACK ITERMINAL VIEW) TRANSISTOR PAIRS ASSOCIATED Q2 Q3 R12 815026C 815026 A 680 815026B 815026B 680 815026 B 815026D 680 815026C 815026E 680 815026D 815026 D 680 815026C 815026 F 330 815045C 815

5、045E 680 815045D 815045B 680 815045D 815045D 680 TRANSISTOR SUBST. TRANSISTOR FOR USE NOS. 815026B 815026D Q2/Q3 815026A 815026E Q2/Q3 815026C No subst. Q2/Q3 815026F No Subst. Q2/Q3 81502 815032 Q5 815031 815032 Q5 815033 815032 Q5 815034 815032 Q5 815035 815032 Q5 FIG. 2 - ETCHED PRINTED CIRCUIT,

6、CHASSIS 120374 (TOP VIEW) TRANSISTOR Q5 ASSOCIATED R14 815031 3.300 815028 8,200 815032 4,700 815033 6,800 815034 8,200 815035 10,000 ANTENNA mtt 0-1 PNP ERTERxl* t-a r lUMFW_ .V CT-A rn TRIMMER R F MOO KC 0. Vl CT-B TRIMMER OSC 1640 KC |l i ( JaSJ Q-5 -MATCHED PAWl ff NPN /y* j lit AUDIO T - V, W R

7、.lSs. AMP T 4l N y/ a sij ; pnp w VOL. 7 w*M AUDIO xont y wp 0-2 PNP OSCILLATOR CT-A TRIMMER i RF 1400 KC CT-B TRIMMER OSC 1640 KC OKC j|_I 0-4 _ O-B audio ci:; OUTPUT-*.TO 0-Tl o T_4 HI : o-6 ! Hp l, DRIVER FIG. 4 - TRANSISTOR & ALIGNMENT POINT LOCATION, CH. 120374 35 FIG. 5 - TRANSISTOR & ALIGNMENT POINT LOCATION, CH. 120485 收音机爱 好者资料库 RadioFans.CN