Emerson-Radio-and-Phonograph-Corp-120720C 电路原理图.pdf

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1、I MODELS: P-1939, P-1940 AUDIO CH.: 120719 AM/FM TUNER: 120720C VOLUME R-25, MOST-OFTEN-NEEDED 1965 RADIO SERVICING INFORMATION Emerson Radio T-IO (right) 6BQ5 AUDIO OUTPUT (RIGHT) f 6BG3 U AUDIO (I OUTPUTA *rnp*- 5U4GB RECTIFIER (LEFT) I2AX7A MODELS: 524, 525, 526. S-9 RIGHT CHANNEV (FROM TUNERJV S

2、-(0 f LEFT CHANNEL (FROM TUNER) (Material on pages 27 through 29) ooool S-6 o oo o (TO I O O o O TUNER) TUBE LOCATIONS. STEREO AMP. CHASSIS V“6 12AU7 v-10 ttAxm ETCHED PRINTED CIRCUIT, AM-FM TUNING CHASSIS (TOP VIEW) T 6 FM RATIO DETECTOR 12AU6 STEREO INDICATOR LIGHT CONTROL , L 6 67 KC TRAP I2BA6 S

3、7t IR) AUDIO OUT- PUT -cLJ AMP 1Q7MC T-7 19KC Ifm LlMiTER 1 AM DETECT* T-5 I 2nd AM IF 12AV6 455KC MIXER AMP I9KC AMP INVERTER AM AM CONVERT- OSC TUBE LOCATIONS AND ALIGNMENT POINTS, AM-FM TUNING CHASSIS. 12AU7 AUDIO PREAMP C44A.B 12AX7A NE2EXW I STEREO INDICATOR A LIGHT /L SW-2 FUNCTION (TDP) I R-6

4、 L BALANCE SW*I ON OFF SW-3 MONO-STEREO (BOT) R 56 A B SWITCH SWITCH 27 收音机爱 好者资料库 RadioFans.CN 28 收音机爱 好者资料库 RadioFans.CN VOLUME R-25, MOST-OFTEN-NEEDED 1965 RADIO SERVICING INFORMATION EMERSON and DUMONT Chassis 120719 and 120720C Diagrams, Continued CIRCUIT 6 0 A R 0 PL-1 NE2! /7S 29 收音机爱 好者资料库 RadioFans.CN