Galvin-Mfg-Co（Motorola）-SP51 电路原理图.pdf

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1、VOLUME R-24. MOST-OFTEN-NEEDED 1964 RADIO SERVICING INFORMATION M0T0/70I.A MODEL SP51 CHASSIS HS-1134 CHASSIS REMOVAL 1. Remove 4 screws that mount the record changer mounting board to the cablnet TONE ARM Z. Lift up the record changer mount- RAISED TO ing board to gain access to under- VERTICAL , s

2、ide of record changer, then un- POSITION / solder and disconnect all leads that V are connected from chassis to /j record changer and speaker. /*p 3. Remove 3 control knobs and two Aft large chassis mounting nuts and / washers, then remove chassis from /fljFfi cabinet; if necessary, remove 4 im scre

3、ws that mount control bracket iW* to chassis toexpose chassis interior and controls. LINE CORD REVERSAL - For min imum hum, insert line cord plug in both positions. Leave it in the posi tion that provides minimum hum. V OF CARTRIDGE STEREO CARTRIDGE T STYLUS ROTATED INV OF CARTRIDGE REAR PORTION i O

4、F STYLUS STYLUS ROTATED TO 78 RPM POSITION , VI 50EH5 PWR AMP LEFT CHAN 7 I 107V R3 82K / RETAINING CLIP U PHASING DOT BLK LEFT CHANNEL SPEAKER RED TOACER R4 82K RECORD CHANGER WIRING PHONO , MOTOR ON- J OFF-RE J | BLiTl 7 I 107V J o V2 50EH5 PWR AMP RIGHT CHAN 115V AC I 5l PHASING DOT RIGHT CHANNEL

5、 SPEAKER , recePT L| LLUG_VIEW_ _I PLUG / _ -N BLK PIN VIEW 1 I 120V 60% g - AC ONLYrffllOl LV2 VI 4/3 3/y4 93 V AC 47V AC R7 39 l_AAAA R8 820 l_AAAA_ y yWv + s _ C4A SJ r VYW *C4B 50MF 50MF NOTES: E5 E4 CAPACITORS - UNLESS OTHERWISE SPECIFIED, DECIMAL VALUES IN MF, ALL OTHERS IN MMF. -L = CHASSIS GROUND VOLTAGES - MEASURED FROM POINT INDICATED TO B- WITH A VTVM, 10% NO SIGNAL INPUT. rfo - RC GROUND 93 收音机爱 好者资料库 RadioFans.CN