RCA-Victor-Co-Inc-7-HF-45 电路原理图.pdf

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1、VOLUME R-17, MOST-OFTEN-NEEDED 1957 RADIO SERVICING INFORMATION I 5 High-Fidelity Record Player RCA Victor Model 7-HF-45 rca Victor STYLUS REPLACEMENT To remove stylus, grip with tweezers at back end and pull away from the pickup. The shank of the stylus holder is im bedded in a rubber block which i

2、s set in a U shaped spring clip. This spring clip holds the stylus assembly to a plastic sup port. The shank of the stylus rests in a metal saddle. When replacing stylus, make certain that shank rests firmly in saddle. 115V. AC. POWER SUPPLY V6 12AX7 1 ST. A. F. VOL. CONT. C4 Tcs .0082 .033 3A R3& O

3、K 500k? T2 i cw - TONE CONTROL CW - MIN. LOWS C/CW - MIN. HIGHS ACCESS TO TUBES Remove compartment panel between record changer compartment and front of cabinet. _ Chassis No. RS-159 V z 3SCS OUTPUT 1QSV. V 3 35CS OUTPUT I BLK. N SPKS 1 - C16 I 4 MP PM SPEAKERS RED _CI1A J_ CUB -50MF. -T- 80MF K* 10

4、00 ALL RESISTANCE VALUES IN OUMS t ALL CAPACITANCE VALUES LESS TUAN 1.0 IN MP. 4 ABOVE 1.0 IN MMF. UNLESS OTHERWISE NOTED. -B ISOLATED FROM CHASSIS CATHODE CURRENTS 12AX7-0.22 MA 35C5-39. MA 35CS-39. MA 35W4-78.3 MA ACCESS TO TUBES Remove two knobs and rest instrument grille side down ward. Detach p

5、ickup and motor cable plugs from chassis. Remove four slotted-head screws from bottom plate to re lease chassis. D( v6 r-t r. 12AX7 ntrr C3 1ST. A.F. d JKU.*,?1 PHASE INV. Automatic Record Player Models 8-EY-4DJ, 8-EY4FK 35C5 Chassis No. RS-160 OUTPUT lOSV. tT-1 &.R14 Agv. flBOK / PULL SHANK STYLUS

6、r-=T R4 -4-W R2 i X I S MEQ. fk 12K$ S VOL. CONT. L R17 * C14 I 12K .0022 PM SPEAKER CW - TONE CDNTROL V4 3SW4 rect. _ L.11 M I ri. -psoMF. -BLK. K*1000 ALL RESISTANCE VALUES IN ONMS d ALL CAPACITANCE VALUES LESS THAN 1.0 IN MF. d ABOVE 1.0 IN MMF. UNLESS OTHER* WISE NOTED. CATHODE CURRENTS 12AX7-0.

7、22 MA 35C5-59-MA 9SC5-59. MA 35W4-7B.3MA STYLUS REPLACEMENT To remove stylus, grip with tweezers at back end and pull away from the pickup. The shank of the stylus holder is im bedded in a rubber block which is set in a ”U shaped spring clip. This spring clip holds the stylus assembly to a plastic support. The shank of the stylus rests in a metal saddle. When replacing stylus, make certain that shank rests firmly in saddle. 114 收音机爱 好者资料库 RadioFans.CN