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------- 3174 Establishment Controller SY21-2584-C.3
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Models 81 R, 82R, 91 R, and 92R
Maintenance Information
3270 Information Display System
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Models 81 R, 82R, 91 R, and 92R
Maintenance Information
Fourth Edition (May 1989)
This revision obsoletes and replaces SY27-2584-2. See "Summary of Changes" on page xxi for the
changes made to this manual. Changes or additions to text and illustrations are indicated by a vertical line
to the left of the change. The drawings and specifications contained herein shall not be reproduced in
whole or in part without written permission.
IBM has prepared this maintenance manual for the use of IBM customer engineers in the maintenance or
repair of the specific machines indicated. IBM makes no representations that it is suitable for any other
purpose.
Information contained in this manual is subject to change from time to time. Any such change will be
reported in subsequent revisions.
References in this publication to IBM products, programs, or services do not imply that IBM intends to
make these available in all countries in which IBM operates. Any reference to an IBM licensed program in
this publication is not intended to state or imply that only IBM's licensed program may be used. Any
functionally equivalent program may be used instead.
Requests for IBM publications should be made to your IBM representative or to the IBM branch office
serving your locality.
A form for readers' comments is provided at the back of this publication. Address additional comments to
IBM Corporation, Department E02, P.O. Box 12195, Research Triangle Park, N.C., U.S.A. 27709. IBM may
use or distribute whatever information you supply in any way it believes appropriate without incurring any
obligation to you.