Emerson-Radio-and-Phonograph-Corp-120693 电路原理图.pdf

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1、VOLUME R-24, MOST-OFTEN-NEEDED 1964 RADIO SERVICING INFORMATION EMERSON Model P-1914, Chassis 120649, Continued from preceding page HI44 c4 R-T * W4 * c-i c- . It* lir. C-3 / c-e -U* f R-6 * j V R-5 1VXv- -* v c-tV i1 8 I I I * - . vr# I *_y* / i f v-2 ,8 7 , * * f C-16 ; f -10 . e-,2v cic V* V b c

2、J V.X_ _/ Hr ) B i0 T FH% w / - CM * C !9 - ETCHED PRINTED CIRCUIT CHASSIS (Bolton Vlow) RESISTANCE READINGS, STEREO AMPLIFIER CHASSIS 120649 TUBE TYPE PIN 1 PIN 2 12AX7 *570K 6.8 M 50EH5 33 30 to .5 M 50EH5 33 30 to .5 M PIN 5 PIN 6 PIN 7 18 *570K 6.8 M 30 to .5 M *450 *370 30 to .5 M *450 *370 * M

3、EASURED WITH COMMON LEAD OF METER CONNECTED TO POSITIVE SIDE OF SELENIUM RECTIFIER SE-1. EMERSON Model P-1926, Chassis 120693 CONTROL CHASSIS AMPLIFIER CHASSIS 37 收音机爱 好者资料库 RadioFans.CN dels P-1936, P-1937, using Amplifier Chassis 120637 (See next page at right for diagram of tuner used) 收音机爱 好者资料库

4、 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN STEREO AMPLIFIER BOARD 40 VOLUME R-24, MOST -OFTEN -NEEDED 1964 RADIO SERVICING INFORMATION ff)Rl20 INTERLOCK ETCHED PRNTED CIRCUIT CHASSIS (BOTTOM VIEW) EXACTLY 7 l-*4 12BE6 CONVERT 12BA6 I F AMP L2 3 OSC. COIL J30V -R*5 TONE ( not uico m 1*0701 C 2 .047 400 V

5、NOTE- TUNING GANG SOWN FULLY CLOSED. 12AV6 OETECT. AUfXAMV NOTCH EMERSON Models G-1710, G-1711, Chassis 120686, 120701 PRINTED CIRCUIT BOARD Voltages indicated or* positivo D.C., rtilitonc* in ohms unloss othorwl so indicated. Moasuomonts takon with Voltahmyst or oquivalont VTVM. All msasuromont tak

6、on botwoon points indicated ond B minus (low si (NEVERTO BE 8H0RTID “ TO CHASMS) RISISTORS IN OHMS! R 1000) ANDWATT UNLISS NOTED. CAPACITORS IN MICROFARAOS RECORD PI AYE R I LEFT CHANNEL NOTH CORRECT PHASING OF SPEAKERS MUST SE OBSERVED. FOR DETAILS REFER TO *SPEAK|R PHASING INFORMATION* | SHOW ). Y

7、ELLOW TRACER R-2 VOLUME 2 MEG r-44 * 660K4 Q-2aJ?R-5 C-2B;fc C-2C; *30MFr55 20MFT 80MF# * (LINE CORO) MOTOR SW-1 ON* OFF SWITCH (ON R-2) SE-I RECTIFIER h eaters CONDITIONS FOR VOLTAGE AND RESISTANCE MEASUREMENTS 1, All voltoges meosured with VTVM, negotive leod to B- (common 3. (*) Indicotes vorying

8、 resis leod of C-2), volume control sot ot minimum. t0 2. All resistonce reodings tokon with AC cord disconnected, nog- Rooding givon varies otive leod to B* (common leod of C2), motor switch in OFF 5 (N.C.) Denotes no connect position. _ 3. (*) Indicotes vorying resistonce ollow 30 seconds for motor to settle. 4 (*) Rooding given varies with setting of volume control. 5. (N.C.) Denotes no connection. SYMBOL TUBE TYPE PIN 1 PIN 2 PIN 3 PIN 4 PIN 5 PIN 6 PIN 7 V-l 60 FX5 33 ion to 510k * 0 85 lOAto 510k * *1 MEG *1 MEG V-2 60 FX5 33 ion to 510k * 170 85 ion to 510k * *1 MEG *1 MEG 42