罗兰Roland-AC-90-Acoustic-Chorus-Service-Manual维修服务手册说明书含电器原理图

Jul.2007AC-90AC-90SERVICE NOTESIssued by RJAACOUSTIC CHORUSTable of ContentsCautionary Notes.....2Circuit Board(Main,XLR Board).......22SpecicationS.2Circuit Diagram (Main Board:Digital)......4Location of Controls..........4Circuit Diagram(Main Board:Analog,XLR Board)..26Location of Controls Parts List5Circuit Diagram (Main Board:Power Supply)......8Exploded View (Cabinet)..6Circuit Board (Jack Board)..30Exploded View (Cabinet)Parts List......7Circuit Diagram (Jack Board).32Exploded View (Chassis).8Circuit Board (Panel Board)...............34Exploded View (Chassis)Parts List.........9Circuit Diagram (Panel Board)...36PartS List10Circuit Board (PS1 Board).............38Verifying the Version Number....................................14Circuit Diagram (PS1 Board).39TestCircuit Board(Amp Board)......40Block Diagram/Wiring Diagram..20Circuit Diagram(Amp Board)..…42RolandCopyright 2007 ROLAND CORPORATIONAll rights reserved.No part of this publication may be reproduced in any form without the written permissionof ROLAND CORPORATION.Roland17058507E0Printed in Japan (0400)(SC-MZ)