Emerson-Radio-and-Phonograph-Corp-P-1920A 电路原理图.pdf

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1、VOLUME R-24, MOST-OFTEN-NEEDED 1964 RADIO SERVICING INFORMATION EMERSON Models P-1921,-A, Chassis 120567B RIGHT CHANNEL V-l 60FX5 7 125V YELLOW TRACI ft -I. | (NEVERTO BE 8H0RTID “ TO CHASMS) RISISTORS IN OHMS! R 1000) ANDWATT UNLISS NOTED. CAPACITORS IN MICROFARAOS RECORD PI AYE R I LEFT CHANNEL NO

2、TH CORRECT PHASING OF SPEAKERS MUST SE OBSERVED. FOR DETAILS REFER TO *SPEAK|R PHASING INFORMATION* | SHOW ). YELLOW 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 R

3、ESISTANCE MEASUREMENTS 1, All voltoges meosured with VTVM, negotive leod to B- (common 3. (*) Indicotes vorying 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 swit

4、ch 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 收音机爱 好者资料库 RadioFans.CN