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IBM PS/2 Model 30 Maintenance Guide: Revision history

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27 September 2026

21 September 2026

  • curprev 23:1423:14, 21 September 2026 Josh talk contribs 26,364 bytes +599 Add Model 30 286 front and open-chassis photographs from Wikimedia Commons undo
  • curprev 23:0923:09, 21 September 2026 Josh talk contribs 25,765 bytes +16,497 Verification drive: corrected the claim that the 8086 Model 30 has no hardware RTC (it has an MM58167AN at U16 with a Panasonic BR-2/3A cell soldered to the riser card at B1); corrected the fixed-disk interface (not ST-506 - a dedicated I/O channel with the controller on the drive); replaced the unsourced rail tolerance table with IBM's P3/P4 pinout and service limits; PSU ratings corrected to 70 W (8086) and 90 W (286); removed the unsourced Model 55 PSU drop-in claim, the 3 A fuse rating an... undo
  • curprev 21:5121:51, 21 September 2026 Josh talk contribs 9,268 bytes +20 Verification drive: flag unverified component data pending check against a primary source undo

21 May 2026

  • curprev 22:5922:59, 21 May 2026 Josh talk contribs 9,248 bytes +9,248 Create comprehensive IBM PS/2 Model 30 / Model 50-60 / Model 70-80 page set with full PS/2 POST code reference, MCA architecture detail, capacitor lists, ECA recalls, and SMD electrolyte leakage diagnosis per RTC style guide
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