雅马哈Yamaha-SPX990-Service-Manual维修服务手册说明书含电器原理图

C sm 773Professional Multi-effect Processorte CrySERVICE MANUAL图CONTENTS(目次)SPECIFICAT1ONS(合仕横)…-……2/3PANEL LAYOUT(N*儿LF白k)4CIRCUIT BOARD LAYOUT(ユ二ykF户K)8BLOCK DIAGRAM(ブ口y夕岁1子夕ラㄙ)…6DIMENS引ONS(寸法☒)…9DISASSEMBLY PROCEDURE(分解手頫)…10LSI PIN DESCRIPTION(LSl端子機能表)….14IC BLOCK DIAGRAM(ICブ口y夕☒)…19CIRCUIT BOARDS(之一卜基板☒)20TEST PROGRAM(テ又Fブ口ヴラㄙ)26/30CHECKS&ADJUSTMENTS(换查铜整)34/35RAM INITIALIZE(RAM亻二之+ラ亻Z)-·-36ERROR MESSAGES(工ラ-×y乜-)36MID1 DATA F0RMAT(MIDi子-夕7才-マy卜)-37/42MIDI IMPLEMENTATION CHART47PRESET PROGRAM LIST...........488OPERATION MAP.…50PARTS LISTYAMAHA CORP.LM011149HAMAMATSU.JAPAN19930310-9900028K-944 Printed in Japan '93.3