Lexicon pcm 70 shematic diagram

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Service Packet

PCM 70

; Digital Effects Prcicéigor
in 3. :

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Safety Precautions

Service operations must only be performed by a qualified service technician. If you
have any doubts about your ability to perform a procedure, please contact Lexicon
for assistance.

WARNING! Hazardous voltages exist inside this unit when the power cord
is connected; use extreme caution when servicing and adjusting. Always
place the unit on an isolation transformer before servicing.

Static Electricity Precautions
Many of the PCM 70s internal components are extremely sensitive to static

electricity. The following practices minimize possible damage to components resulting
from electrostatic discharge:

1. Minimize handling of boards and integrated circuits (ICs).
2. Keep parts in original containers until ready for use.

3. Discharge personal static before handling devices.

4. Use antistatic containers for handling and transport.

5. Do not slide devices over a surface.

6. Avoid plastic, vinyl, or styrofoam in the work area.

7. Handle ICs only at a static-free work station.

8. Use only grounded-tip soldering irons.

Notice

Lexicon, Inc. reserves the right to make changes in this service packet and the
product it describes at any time and without notice or obligation.

Copyright (c) 1986 Lexicon Inc.
60 Turner Street
Walthnm, MA 02154
(617) 891-6790
Telex 923 468

All Rights Reserved

No part of this service packet may be reproduced or transmitted by any means or in
any form, without prior consent in writing from Lexicon, Inc.

Lexicon has taken considerable care in determining the accuracy of the information
in this literature; however, it makes no warranty as to its accuracy and 18 not

responsible for direct or consequential damage resulting from any usage of the
material it contains.

Printed in the United States of America

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