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TS-990S SERVICE MANUAL TEXT EDITION Version:RQ004 (Y) 185 (B53-7036-00)

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HF/50MHZ TRANSCEIVER

TS-990S

 

SERVICE MANUAL TEXT EDITION

JVC KENWOOD Corporation

© 2013-4 PRINTED IN JAPAN RQ004 (Y) 185 (B53-7036-00)

CONTENTS

DISASSEMBLY FOR REPAIR..................................................3

CIRCUIT DESCRIPTION..........................................................4

COMPONENTS DESCRIPTION.............................................40

SEMICONDUCTOR DATA......................................................60

PARTS LIST............................................................................75

EXPLODED VIEW.................................................................150

PACKING..............................................................................157

TROUBLE SHOOTING.........................................................158

ADJUSTMENT......................................................................160

TERMINAL FUNCTION........................................................210

LEVEL DIAGRAM.................................................................238

OPTIONAL ACCESSORIES

ARCP-990 (Radio Control Program)...............................240

ARHP-990 (Radio Host Program)...................................240

SP-990 (External Speaker)..............................................240

SPECIFICATIONS.................................................................242

Document Copyrights

Copyright 2013 by JVC KENWOOD Corporation. All rights reserved.

No part of this manual may be reproduced, translated, distributed, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, for any purpose without the prior written permission of

JVC KENWOOD Corporation.

Disclaimer

While every precaution has been taken in the preparation of this manual, JVC KENWOOD Corporation assumes no responsibility for errors or omissions. Neither is any liability assumed for damages resulting from the use of the information contained herein. JVC KENWOOD Corporation reserves the right to make changes to any products herein at any time for improvement purposes.

Safety Check after Repairs

Perform the insulation resistance test for the security of the product, after repairs.

■ Point to be checked

Check that the power supply plug does not have poor contacts and that there is no garbage or conductive materials stuck between the terminals. If the power supply cord is damaged, do not repair it using tape; replace it with the specified part.

■ Safety study

After repairs have been completed, remove the power supply cord from the outlet, the antenna, the outside connection cable, etc., and insert the power switch. Using a 500V DC insulation resistance meter, check the insulation between each terminal of the attachment plug and the antenna terminal and other outside metal parts, and ensure that the insulation resistance levels are more than 4MQ. When the insulation resistance level is lower than this value, check repair of the transceiver is required.




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