Service Manuals, User Guides, Schematic Diagrams or docs for : IBM 360 fe 2025 Y24-3529-0_2025_Processing_Unit_FE_Maintenance_Diagrams_Feb69

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                                                                        Field Engineering

                                                                        Maintenance Diagrams




                             Restricted Distribution

       This manual is intended for internal use only and may not be
       used by other than I BM personnel without IBM's written permission.




~@ ~
  ~    PrDcessing Unit




                                                                                            Y24-3529-0
Form Y24-3529-0
FES Y24-0094

Preface




The IBM System/360 Model 25 FEMDM is intended as a                                         References to the System/360 Model 25 FEMDM are
quick-recall document for use in the field. The manual                                    made from the following manuals.
consists of the following sections.
  1. Diagnostic Technique Diagrams                                                        System/360 Model 25 Processing Unit FETOM,
      These diagrams give a generalized approach to                                       Form Y24-3527.
      troubleshooting problems on the System/360
      Model 25.                                                                           System/360 Model 25 Processing Unit Integrated 2540
  3. Data Flow Diagrams                                                                   Attachment FETOM, Form Y24-3532.
      These diagrams show the system data flow and
      identify the major components of the system.                                        System/360 Model 25 Processing Unit Integrated 1403
  4. Functional Units Diagram~                                                            Attachment FETOM, Form Y24-3533.
      The functional units diagrams are positive logic
      diagrams of the CPU, Integrated Units, File, and                                    Sysiem/360 Model 25 Processing Unit Integrated 2311
      Channel circuits. These diagrams show logical                                       Attachment FE TOM, Form Y24-3534.
      operation of circuits without regard to signal level,
      although actual ALD line names are used.                                            System/360 Model 25 Processing Unit Channel FETOM,
  5 . Opera tional Diagrams                                                               Form Y24-3531.
      The operational diagrams describe some of the
      basic operations performed by the System/360                                        System/360 Model 25 Processing Unit FE Maintenance
      Model 25 and its integrated attachments.                                            Manual, Form Y24-3S28.
  Immediately following the table of contents is a refer-
ence list of lights, switches, and latches used in the
System/360 Model 25.




RESTRICTED DISTRIBUTION: This manual is intended for internal use only and may not be used
by other than IBM personnel without IBM's written permission.

First Edition (October, 1968)
Significant changes or additions to the specifications contained in this publication are continually
being made. Any such changes will be reported in subsequent revisions or FE Supplements.

This manual has been prepared by the IBM Systems Development Division, Product Publications,
Dept. 171, P.O. Box 6, Endicott, N.Y. 13760. A form for readers' comments is provided at the
back of this publication. If the form has been removed, comments may be sent to the above-mentioned
address.

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