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SY34-0091 -1
IBM Series/1
Common Features
Theory Diagrams
Preface
This manual describes the IBM Series/1 common are given for descriptive purposes only, and must not
features, a group of attachment features that be used for machine problem analysis. Cable
communicate directly with the Series/1 processor via connector information, voltage levels, and pin
the II 0 channel. Also described are three unit numbers are listed in the engineering-generated and
devices that extend the capabilities of the Series/1 engineering-change-controlled documentation shipped
family of processors. with each machine.
This manual is designed to be used in classrooms for
instructing maintenance personnel in the theory of Related Publications
operation of the Series/1 common features. It may IBM Series/1 processors and associated devices are
also be used as a self-study or reference document in described in separate maintenance publications.
the field. These publications are shipped from the plant of
The presentation level of this manual is oriented to origin and accompany the device.
the field replaceable unit (FRU). Diagrams are Refer to the IBM Series/l Graphic Bibliography,
high-level block-flow that show only the major units GA34-00SS, for a complete listing and description of
within a FRU. Signal lines and power lines between all IBM Series/1 publications.
FRUs are described. Voltage levels and pin numbers
Second Edition (November 1979)
This is a major revision of and obsoletes SY34-0091-0. The primary change is the addition of
Chapter 11, "Series/l-S2S0 Information Display System Attachment Feature."
This publication contains information relating the certain feature attachments that are common
to the Series/1 family of processors. With the exceptions of Chapters 1, 10, and 11, which were
written for this document, this information was previously contained in the IBM 4953 Processor
and Processor Features Theory Diagrams manual and the IBM 4955 Processor and Processor
Features Theory Diagrams manual, SY34-0042 and SY34-0041, respectively.
Use this publication only for the purpose stated in the Preface.
Changes are periodically made to the information herein; any such changes will be reported in
sub seq uent revisions or Technical Newsletters.
It is possible that this material may contain reference to, or information about, IBM products
(machines and programs), programming, or services that are not announced in your country.
Such references or information must not be construed to mean that IBM intends to announce
such IBM products, programming, or services in your country.
Publications are not stocked at the address given below. Requests for copies of IBM publica-
tions should be made to your IBM representative or the IBM branch office serving your locality.
This pUblication could contain technical inaccuracies or typographical errors. A form for
readers' comments is provided at the back of this pUblication. If the form has been removed,
address your comments to IBM Corporation, Systems Publications, Department 27T, P.O. Box
1328, Boca Raton, Florida 33432. IBM may use and distribute any of the information you
supply in any way it believes appropriate without incurring any obligation whatever. You
may, of course, continue to use the information you supply.