雅马哈YAMAHAPSR-S550-S550B_ServiceManual电子琴维修使用说明书图纸

DIGITAL WORKSTATIONPsR-S三☐/PsR-S马口BSERVICE MANUALPSR-S550PSR-S550B■CONTENTS(目次)SPECIFICATIONS3PANEL LAYOUT .......4CIRCUIT BOARD LAYOUT WIRING(1二y卜少亻了户卜及U結線☒).…6EXTENSION CABLE FOR SERVICE USE(竹一上又用延長分一ブ儿).7BLOCK DIAGRAM(ブ口y夕ダ亻了分ラㄙ)...8DISASSEMBLY PROCEDURE（分解手順)...9LSI PIN DESCRIPT1ON(LSI端子機能表)......16IC BLOCK DIAGRAM(ICブ口y夕☒).0CIRCUIT BOARDS(一卜基板☒)21TEST PROGRAM...................33INITIALIZATION…37DATA BACKUP.........38SYSTEM BOOTING FLOW CHART.......................43MIDI IMPLEMENTATION CHART(MID亻ブ刂メ)テ一之3y于ヤ一卜)44MIDI DATA FORMAT45PARTS LISTOVERALL CIRCUIT DIAGRAM(然回路☒)YAMAHAPK001810HAMAMATSU,JAPANCopyright(c)Yamaha Corporation.All rights reserved.KMD08.08