IBM PS2 Model 80 Schematics - Revision history

Josh: Title blocks checked; PAL sheets are connection diagrams, not PAL equations; remove uncited publisher history and 'IBM never published' claim; citing pages from backlinks

2026-09-30T20:58:52Z

Title blocks checked; PAL sheets are connection diagrams, not PAL equations; remove uncited publisher history and 'IBM never published' claim; citing pages from backlinks

@@ Line 1: / Line 1: @@
-The '''PS/2 Model 80 schematic set''' is twenty sheets of circuit diagrams for the [[IBM PS/2 Model 80|PS/2 Model 80]] (8580), '''Revision 1, dated 16 October 1991'''.
+<templatestyles src="Template:StyledTable/styles.css" />
-'''Every sheet names the planar it was drawn from: IBM part number 90X9152-01.''' That matters &mdash; the Model 80 shipped with more than one planar type over its life, and these sheets document one of them. Check the number on your own board before trusting a designator.
+The drawings are of the board marked 90X9152-01. Check the number on the board in hand before relying on a designator.
-These sheets are '''not an IBM publication.''' Every title block carries the name '''Maintenance Information Technologies''' and the words "COPYRIGHT APPLIED FOR", together with this notice:
+== Contents ==
-:''"Servicing of any electronic product should only be performed by qualified personnel. This drawing and information has been Copyrighted by the company listed. Its content has been sold for the unlimited use to you. The only restrictions are that it not be copied for republication or distribution outside your company. No patent liability is assumed with respect to the use of information contained herein. Maintenance Information Technologies believes the information herein to be correct. We are not responsible for any typographical errors; no direct or implied warranty is made to its accuracy. Specifications subject to change without notice."''
+The drawings carry designators and values for the parts on each circuit. Sheet 11, for example, has the MC146818A real-time clock with its 32.768 kHz crystal and the LM386 audio amplifier with its capacitors. The four PAL sheets show the programmable logic devices as connection diagrams with their pin signals; they do not give the PAL equations.
-Maintenance Information Technologies was a third-party publisher of service schematics for the independent repair trade in the late 1980s and early 1990s. IBM itself never published a PS/2 schematic.
+== What this document does not contain ==
-== What it contains ==
+== Pages that cite this document ==
+* [[IBM PS/2 Model 80]] and [[IBM PS/2 Model 80 Capacitor Replacement Guide]] link it.
-Twenty sheets, each headed "PS/2 80" and "90X9152-01", marked "SHEET ''n'' OF 20":
+* The Model 80 technical references of [[IBM PS2 Model 80 Technical Reference (April 1987)|April 1987]], [[IBM PS2 Model 80 Technical Reference (May 1988)|May 1988]] and [[IBM PS2 Model 80 Technical Reference (October 1990)|October 1990]], [[IBM PS2 Model 30 Schematics]], [[IBM PS2 Model 50 Schematics]] and [[IBM PS2 225W Power Supply 72X6665 Schematic (Tube Time, 2024)]] list it as related.
 <pdf> File:IBM PS2 Model 80 Schematics.pdf </pdf>
-Download it here: [[:File:IBM PS2 Model 80 Schematics.pdf|IBM PS2 Model 80 Schematics.pdf]]
+Download: [[:File:IBM PS2 Model 80 Schematics.pdf|IBM PS2 Model 80 Schematics.pdf]]
 [[Category:IBM Service Manuals]]
 [[Category:Service Manuals]]

Josh: P4 verification: real documentation page - title as printed, part/form number, edition, contents, honest gaps, what it settles, cross-links

2026-09-24T23:16:57Z

P4 verification: real documentation page - title as printed, part/form number, edition, contents, honest gaps, what it settles, cross-links

@@ Line 1: / Line 1: @@
 <pdf> File:IBM PS2 Model 80 Schematics.pdf </pdf>
-IBM PS/2 Model 80 (8580) full schematics.
+Download it here: [[:File:IBM PS2 Model 80 Schematics.pdf|IBM PS2 Model 80 Schematics.pdf]]
-Download the IBM PS2 Model 80 Schematics here: [[:File:IBM PS2 Model 80 Schematics.pdf]]
+* [[IBM PS/2 Model 80]] &middot; [[IBM PS/2 Model 80 Maintenance Guide]] &middot; [[IBM PS/2 Model 80 Troubleshooting Guide]] &middot; [[IBM PS/2 Model 80 Capacitor Replacement Guide]]
 [[Category:IBM Service Manuals]]

Josh: Create page for IBM PS2 Model 80 Schematics

2026-05-22T08:53:26Z

Create page for IBM PS2 Model 80 Schematics

New page

<pdf> File:IBM PS2 Model 80 Schematics.pdf </pdf>

IBM PS/2 Model 80 (8580) full schematics.

Download the IBM PS2 Model 80 Schematics here: [[:File:IBM PS2 Model 80 Schematics.pdf]]

[[Category:IBM Service Manuals]]