IBM SY22-2841-3 360-40Maint free download

File name SY22-2841-3_360-40Maint.pdf

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