DD-20_维修手册电器原理图

Mar.2003DD-20(T)D0-20(T)SERVICE NOTESIssued by RJADIGITAL DELAYTABLE OF CONTENTSSPECIFICATIONS......2TEST MODE......14LOCATION OF ONTROLS.4.BLOCK DIAGRAM.22LOCATION OF CONTROLS PARTS LIST...............5CIRCUIT BOARD K-A)....4EXPLODED VIEW..6CIRCUIT BOARD (JK-B).....EXPLODED VIEW PARTS LIST.....9025CIRCUIT BOARD(PANEL-A)......6PARTS LIST......…10CIRCUIT BOARD(PANEL-B)..........CHECKING THE VERSION NUMBER....................14CIRCUIT DIAGRAM (JACK)....8RESTORING THE FACTORY SETTINGS.14CIRCUIT DIAGRAM(PANEL)...................30己己⊙DD-2 DIGITAL DELAYGIGA DELAYOE.LEVELF.BACKDELAY TIMEDELAY TIME2阳TONECTL PEDALT7刊T5元MMU以1TAPESELECT-SMDOTHTEMPOWRITENODULATE0sL米LIGHTJMEMORYPUL品●O品可日口B8Copyright 2003 ROLAND CORPORATIONAll rights reserved.No part of this publication may be reproduced in any form without the written permissionof ROLAND CORPORATION.Roland17058152E0Printed in Japan (0800)(NB)