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IBM PS/2 Model 30 Troubleshooting Guide: Revision history

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27 September 2026

  • curprev 10:4010:40, 27 September 2026 Josh talk contribs 18,343 bytes +4,167 Rebuild against Ardent Tool's 8530 planar and power pages: 'the Model 30 8086 has no hardware RTC' is wrong (MM58167AN at U16 with a soldered 3 V cell); delete the unsourced 'Model 55 PSU is a drop-in replacement' claim, the 3 A keyboard fuse rating and code 2408; add IBM's own four service tips (H043664 cursor keys / 501 errors and the U9/U15 'Japan' marking check, H067282 bus adapter battery voltage where IBM's own HMS prints the wrong pins, H007157 the fixed disk / board / diagnostics comb... undo

16 July 2026

21 May 2026

  • curprev 22:5922:59, 21 May 2026 Josh talk contribs 10,650 bytes +10,650 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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