SEQUENTIAL 420 TOM SERVICE MANUAL ocr

SEQUENTIAL TMWOA Publications Department]uly，19S5 DIGITAL DRUM MACHINE TECHNICAL MANUAL and Stanley Jungleib SEQUENTIAL/EUROPE SEQUENTIAL/U.S.A. Postbus 16 3051 North First Street 36^0 AA Mijdrecht San Jose, CA 9513^-2093 Netherlands U.S.A. 02979.6211 (408) 9^6-52W TELEX:12721 SQNTL NL TELEX••パ 97150 S 已QCIR DIGITAL DRUM MACHINE TECHNICAL MANUAL and Stanley Jungleib ◎1985 by SEQUENTIAL All rights reserved. Printed in the U-S.A. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the publisher- The Modelな20 TOM.Design ream: PROJECT MANAGER/ENGINEER: Tony Dean FIRMWARE: Bill Aspromonte MIDI FIRMWARE: Chris Meyer DIGITAL SAMPLING SYSTEM DESIGN: Paul Rutigliano MECHANICAL ENGINEER: Tom Benningfield PC LAYOUT: Jeff Oglev

SEQUENTIAL TMWOA Publications Department ]uly，19S5 MODEL ¢20 TOM DIGITAL DRUM MACHINE TECHNICAL MANUAL by Rick Davies and Stanley Jungleib SEQUENTIAL/EUROPE SEQUENTIAL/U.S.A. Postbus 16 3051 North First Street 36^0 AA Mijdrecht San Jose, CA 9513^-2093 Netherlands U.S.A. 02979.6211 (408) 9^6-52W TELEX:12721 SQNTL NL TELEX••パ 97150 S 已QCIR TM^20A July,1985 MODEL な20 TOM DIGITAL DRUM MACHINE TECHNICAL MANUAL by Rick Davies and Stanley Jungleib ◎1985 by SEQUENTIAL All rights reserved. Printed in the U-S.A. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the publisher- The Modelな20 TOM .Design ream: PROJECT MANAGER/ENGINEER: Tony Dean FIRMWARE: Bill Aspromonte MIDI FIRMWARE: Chris Meyer DIGITAL SAMPLING SYSTEM DESIGN: Paul Rutigliano MECHANICAL ENGINEER: Tom Benningfield PC LAYOUT: Jeff Oglevee PRODUCT SUPPORT ENGINEER: Scott Peterson h TABLE OF CONTENTS title paRe 0 SYSTEM/CHASSIS 0.1 Abnormal Power-on Indications 0.1 Updates 〇•! TOMI—5 Software Update 0.1 Cassette Interface 0-1 Memory Loss 0.1 Figure 0.1…