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27 September 2026
| 10:43 | IBM PC AT Troubleshooting Guide diffhist −1,709 Josh talk contribs (Structural and content repair: remove emoji from section headings; merge the duplicated References section (the trailing bare bullet list is now named inline refs); de-duplicate the tripled/quadrupled ref definitions that produced visible cite errors; rewrite the bolted-on power-supply and CMOS blocks so they describe this machine (the Dallas DS1287/DS12887 claim and, where applicable, the PC/XT minimum-load sentence did not apply here)) | ||||
25 September 2026
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00:20 | IBM PC AT (5170) 2 changes history +119 [Josh (2×)] | |||
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00:20 (cur | prev) −100 Josh talk contribs (P4 verification: merge the duplicated manual links into one documentation line) | ||||
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00:19 (cur | prev) +219 Josh talk contribs (P4 verification: link the IBM manuals hosted on this wiki that document this machine (they were unlinked from every article)) | ||||
| 00:18 | File:IBM PC AT 5170 Technical Reference Sep85.pdf diffhist +1,226 Josh talk contribs (P4 verification: real File: description - document identity from its own title page, page count, honest source note and honest licence block) | ||||
| 00:16 | IBM PC XT 5155 5160 Technical Reference (March 1986) diffhist +1,618 Josh talk contribs (P4 verification: real documentation page - title as printed, part/form number, edition, contents, honest gaps, what it settles, cross-links) | ||||
| 00:16 | IBM PC AT 5170 Technical Reference (March 1984) diffhist +2,769 Josh talk contribs (P4 verification: real documentation page - title as printed, part/form number, edition, contents, honest gaps, what it settles, cross-links) | ||||
23 September 2026
| 03:39 | IBM PC AT (5170) diffhist +5,808 Josh talk contribs (Rebuilt against IBM's AT Technical Reference and the Personal Computer Family Service Information Manual (both hosted here) plus minuszerodegrees. Corrections: weight is 19.05 kg (42 lb) in IBM's service manual and 20.0 kg (44 lb) in the Technical Reference - both quoted - not '~43 lb (19.5 kg)'; height is 162 mm (IBM prints 6.8 in), not 6.4 in; the eight I/O slots are SIX 16-bit and TWO 8-bit, not eight 16-bit; the 16450 UART belongs to the separate Serial/Parallel Adapter, not the system bo...) | ||||
22 September 2026
| 00:36 | IBM PC AT Maintenance Guide diffhist +19,392 Josh talk contribs (Verify against IBM 5170 TechRef (Sep85), IBM HMS 6280087 parts catalogue and minuszerodegrees; add inline <ref> citations. Corrections: three of four rail ranges were wrong (IBM specifies +5%/-4% and +10%/-8%/-9%); IBM supplied a 6 V LITHIUM battery p/n 8286121, not a 4xAA holder; CMI drive was the 6426-S at 20 MB (there is no "CMI 5616") and IBM moved to the Seagate ST-4026; removed unsourced Mitsubishi M4853/Tandon TM65-2L drive names; wire-colour measurement table replaced with IBM load-po...) | ||||
| 00:36 | IBM PC AT Capacitor Replacement Guide diffhist +11,091 Josh talk contribs (Rewrite with inline <ref> citations (page previously had none). Key finding: minuszerodegrees failure history records tantalum capacitors as 0 of 21 reported 5170 motherboard failures, against 41/72 on the 5160 and 35/97 on the 5150 - the page premise was wrong, so it now documents what actually fails (RAM bank 0, MC146818, U126 keyboard controller, RAM delay lines, ROMs/sockets). Corrections: 3-hole footprint advice was dangerous - centre hole is POSITIVE on 3-legged-wired boards, outer pair...) | ||||
21 September 2026
| 21:51 | IBM PC AT Maintenance Guide diffhist +20 Josh talk contribs (Verification drive: flag unverified component data pending check against a primary source) | ||||
| 21:51 | IBM PC AT Capacitor Replacement Guide diffhist +20 Josh talk contribs (Verification drive: flag unverified component data pending check against a primary source) | ||||