RCA-Victor-Co-Inc-52HE 电路原理图.pdf

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1、i“ r-yip:KUP J i_j_l Jrzrn_NEEDLE MANUAL OF 1946 MOST POPULAR SERVICE DIAGRAMS rcaVictor fTf! I / oc f plCKUp | VICTROLA Phonograph jOi-“1 105 125 volts. 60 cycle.40 watts i “iQ * 1 IMPORTANTDo not plug chassis into a d.c. power supply. . i J (I POWER OUTPUT RATING . . Umlistortcd.0.8 watts (approx.

2、) Maximum.1.2 watts (approx.) 60 TO 50 CYCLE CONVERSION SERVICE HINTS A spring sleeve or bushing is used to increase the diameter of the mot To Remove Tumtshle* drive spindle, to compensate for the slower speed of the motor when us to nemove lurntante. on a SO cycle line. Remove spring clip fro. tur

3、ntable spindle ami lift turntable straight up. Spring sleeves and bushings are available as follows: Irregular Turntable Speed: For motors marked “M-l”. use Stock No. 7J275. (1) Oil or grease on rubber tire of turntable drive wheel or on motor spindle. For motors marked use Stock No. 71276. Remove t

4、urntable and dean spindle, drive wheel tire, and inside edge For motors marked “M-4”, use Stock No. 71277. of turntable with naphtha or carbon-tetrachloride. (2) Insufficient tension in drive wheel tension spring. (3) Friction between drive wheel plate and motor mounting plate. (4) Lack of lubricati

5、on. “N /1 T poweR cord LUBRICATION ( ! liTC“ -LcfuDSPEAER. 60 TO 50 CYCLE CONVERSION A spring sleeve or busliing is used to increase the diameter of the motor drive spindle, to compensate for the slower speed of the motor when used on a 50 cycle line. Spring sleeves and bushings are available as fol

6、lows: For motors marked “M-l”. use Stock No. 71275. For motors marked use Stock No. 71276. For motors marked “M-4”, use Stock No. 71277. The bearings of the motors furnished in these instruments are lubricated at the factory and should require no further lubrication for a period of at least one year

7、. When lubrication is required, apply a few drops of any good grade of S.A.E. #10 oil to the bearing felts. Turntable Spindle When lubrication is required, apply one or two drops of Gargoyle 600W to the bearing. Drive Wheel Apply one or two drops of any good grade of S.A.E. #10 oil to the bearing. C

8、AUTION: Exercise extreme care to prevent getting any oil on- the rubber tire or on the motor shaft. Oil on these parts will cause slippage witli resultant irregular turntable speed. PICKUP CONNECT TONE ARM TO THIS lLEAD 50L6-GT A.F. AMPL. TONE CONTR. RM. SPEAKER Model 52 E 4 tto V. GOn, SUPPLY CHASSIS POWER CORD TO PHONO. SPEAKER MOTOR COMPILED BY M. N. BEITMAN. SUPREME PUBLICATIONS 收音机爱 好者资料库 RadioFans.CN