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IBM PS2 Model P75 486 Quick Reference

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Revision as of 21:23, 30 September 2026 by Josh (talk | contribs) (Contents with page numbers from the scan; add battery P/N 64F9987 and display spec; mercury note now cross-referenced to the P70 HMR rather than asserted; copyedit)
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The IBM Personal System/2 Model P75 486 Quick Reference, First Edition (October 1990), is the owner's handbook that shipped with the PS/2 Model P75 486 (type 8573), the portable 486 Micro Channel machine with a gas-plasma display. The PDF has 130 pages and is an image-only scan with no text layer. It is a user book, not a service manual.

Contents

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Page numbers are the book's own.

Chapter Subjects Page
1. Before Using the IBM Personal System/2 Model P75 486 checking parts, the computer's features, installing internal options (rear cover, adapters, memory module kits, the SCSI hard disk), connecting external options, starting the Reference Diskette, installing an operating system 1
2. Introducing the IBM Personal System/2 Model P75 486 identifying the features, options, plasma display information, start-up sequence, the Reference Diskette and its backup copy, passwords, the IBM Disk Cache, plasma display brightness 45
3. Removing and Adding Options adapters, memory module kits, external options 75
4. Solving Computer Problems how to start testing, troubleshooting charts, what to do if testing finds nothing, record of the system unit 85
Appendix A. Additional Information diskette drives and diskettes, IBM Disk Cache technical information, IBM Cassette BASIC, power cords, battery 97
Index 113

Useful to a repairer

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  • The front-matter caution: "The plasma display panel contains a small amount of mercury, cadmium, and lead. Follow your local ordinances or regulations for its proper disposal." IBM prints the same note in the removal procedure for the P70 386 plasma-display assembly (P70 386 HMR, procedure 1050).
  • Plasma display (p. 54): 640 × 480 VGA, shown in up to 16 monochrome shades; CGA and EGA programs do not fill the screen.
  • Battery (p. 106): lithium, to be replaced only with IBM part 64F9987. Removing it loses the configuration, and the backup Reference Diskette must then be run so the machine can configure itself.

What this manual does not contain

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There are no FRU numbers other than the battery, no service removals beyond user-installable options, no symptom-to-FRU index, no schematic and no component values. Service information for the 8573 family is in IBM Mobile Systems Hardware Maintenance Manual Volume 1.

Download: IBM PS2 Model P75 486 Quick Reference.pdf

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