罗兰Roland-MT-90U-Music-Player-Service-Manual维修服务手册说明书含电器原理图

Mar.2008MT-90UMUSIC PLAYERSERVICE NOTESMT-900Issued by RJATable of ContentsCautionary Notes..2TestMain Specifications....2Circuit Board (Main Board)22Location of Controls(Front Panel)....4Circuit Diagram (Main Board:1/4)..24Location of Controls(Front Panel)Parts List..........4Circuit Diagram (Main Board:2/4)......26Location of Controls (Rear Panel)............5.Circuit Diagram (Main Board:3/4)....2Location of Controls(Rear Panel)Parts List...............5Circuit Diagram (Main Board:4/4).....................28Exploded View(Al)…6Circuit Board (Panel Board)..30Exploded View(All)Parts List.Circuit Diagram(Panel Board)..........32Exploded View (1)......8Circuit Board (Jack,Volume,IR,USB,Power SWExploded View(1)Parts List.......9Board)34Exploded View (2).............10Circuit Diagram (Jack Board:1/3).....36Exploded View (2)Parts List..10Circuit Diagram (ack Board:2/3).38Important Notes on Assembly....11Circuit Diagram (ack Board:3/3)........4.0Block Diagram/Wiring Diagram..14Circuit Diagram (Volume Board)..42Parts List..16Circuit Diagram (IR Board).............44Verifying the Version Number....18Circuit Diagram(USB Board).....44Performing a Factory Reset..18Circuit Diagram (Power SW Board).............45Updating the System .......18RolandMT如0■0⊙⊙2mp3Copyright 2008 Roland CorporationAll rights reserved.No part of this publication may be reproduced in any form without the written permissionof Roland Cororation.Roland17058572E0Printed in Japan(0285)(CC-KWS)