Service Manuals, User Guides, Schematic Diagrams or docs for : IBM 360 fe 2040 SY22-2841-3_360-40Maint
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ll) gj rill Field Engineering
Maintenance Manual
System/360 Model 40
2040 Processing Unit
SY22-2841-3
Preface
This manual contains information for servicing the Information in this manual supplements that in the
IBM 2040 Processing Unit. following publications:
System/360 Model 40, 2040 Processing Unit Dia~
The section on Diagnostic Techniques gives general grams Manual, Order No. SY22-2842
information concerning the maintenance concepts for System/360 Model 40 Comprehensive Introduction,
System/360, and also procedures and guides for trou- FETOM, Order No. SY22-2840
ble-shooting. A useful description of the Diagnose in- System/360 Model 40 Functional Units, FEMI,
struction is given in this section. The Maintenance Order No. SY22-2843
Features section contains a description of console dis- System/360 Model 40 Theory of Operation, FEMI,
plays, information on use of the console, detailed ex- Order No. SY22-2844
planation for internal diagnostics, and log-out charts System/360 Model 40 Power Supplies and Appen-
(with an example of a SEREP print-out). Preventive dices, FEMI, Order No. S223-2845
Maintenance describes and tabulates preventive main- SLT manuals:
tenance action and frequency. There is a section on Solid Logic Technology, Packaging, Tools, and Wir-
Checks, Adjustments, and Removals (which includes ing Change, FETOM, Order No. SY22-2800
both the High Frequency and Mid-Pac power sup- Solid Logic Technology, Power Supplies, FETOM,
plies). The section on Locations uses charts, diagrams, Order No. SY22-2799
and pictures to give quick, visual reference to CPU This manual is written to engineering change level
locations. 254814 for ALD'S and CLD level 255263. Subsequent
engineering changes may alter the contents of this
We recommend placing this manual in a binder manual.
with the staples removed. The first page of major All three-digit figure references are to System/360
sections, and charts or examples could be tabbed for Model 40, 2040 Processing Unit, Field Engineering
quick reference. Diagrams Manual, Order No. SY22-2842.
Fifth Edition (November 1975)
This is a reprint of SY22-2841-2 incorporating changes released in FE supplement
SY22-6826, dated June 1, 1970.
Changes are periodically made to the specifications herein; any such change will be
reported in subsequent revisions or Technical Newsletters.
This manual has been prepared by the IBM System Products Division, Product
Publications, Dept. B96, PO Box 390, Poughkeepsie, N.Y. 12602. 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 address. Comments become the
property of IBM.
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