Emerson-Radio-and-Phonograph-Corp-885B 电路原理图.pdf

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1、VOLUME R-18, MOST-OFTEN-NEEDED 1958 RADIO SERVICING INFORMATION Tmerson Radio (Material continued on the next page adjacent at right) MODEL - 885B CHASSIS - 120371 B MODEL - 886B CHASSIS - 1 20371 B 60 收音机爱 好者资料库 RadioFans.CN AMT VOLUME R-18, MOST-OFTEN-NEEDED 1958 -. -*ociPi ANT CPMA TIM NO NINO FT

2、 NO.MtNO Emerson CHASSIS 12037 IB Models 885B and 886B (Continued from preceding page adjacent at left.) _ 6AU6 AQ8 0AOB HD Ml HI f . . i 6A pm mr L fnoi CCHJPLATE I T-0N I I T 9*1 s a Tl,“ PANT NO I I I 4UU I / NL-# / AAlic * I Z0 AN I ir Alt . ./ 3*OK / 8AU UTNAN3 IftkamsJ L10 =1 / _V 7=7.” Z2r=r*

3、 NOTE TPANJTONIKW APE DUAL TUN 10 ( TOP AMO NOT TON 1 AC ONLY _JCP5 cm qnp CK Hn TUBE LOCATION AND ALIGNMENT POINTS (TUNER) T . AUDIO- X tt J. k!i I c*i y. iwmp g.nerator 300KC. Mork.r ganarator ox indicated. High side to junction of L-10 & CT-4. Low side to chassis ground. High side to junction of

4、L-10 & CT-4. Low side to chas. ground. High side to FM ont, term. Low side to chassis ground. High side to FM ant. term. Low side to chossis ground. Tuning condenser fully open Tuning condenser fully open Test point and chassis Test point and chassis Test point Top & Bot. T-6, T-5, T-3 Adjust for ma

5、ximum gain & symmetry. T-7 Ad|ust for maximum top & gain & symmetry (S bot. pottern) See Fig. 7. C-25 Ad|ust for maximum CT3 output CT4_ L8, L9, Adiust (by spreading L10 and/or compressing coils with non-metal lie screw driver) for max imum outpuf. 61 DIAL CORD STRINGING DIAGRAM (TUNER) 收音机爱 好者资料库 RadioFans.CN