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24 September 2026
| 22:03 | IBM 3270 PC/GX diffhist +5,635 Josh talk contribs (Fix refs so they render; the 5379 is powered FROM the 5378, not from its own socket; remove the phantom 75-pin cable (62-way bus extender to the system unit, 2 m cables to the display); add IBMs own 5378 internals (Motorola 68000, 128 KB shared memory, +5/-5/+12/-12 V supply, eight logic cards incl up to three bit-plane cards) and the full 5379 specification; Model 016 is 576 KB on a /GX) | ||||
| 22:03 | IBM 3270 PC/G diffhist +5,930 Josh talk contribs (Fix refs so they render; the 5278 has NO mains lead - IBM states it is powered from the 5279; remove the phantom 75-pin connector (cables are 1 m and 680 mm; the /GX link is a 62-way bus extender); Model 016 is 640 KB on a /G not 576 KB (that is the /GX figure); the /G has no APA or PSS card; the 5277 mouse is an option not standard; add IBMs full 5278 and 5279 specifications) | ||||
22 September 2026
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01:42 | IBM 3270 PC/GX Capacitor Replacement Guide 2 changes history +9,285 [Josh (2×)] | |||
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01:42 (cur | prev) +43 Josh talk contribs (Clarify that the two IBM manuals give different 5378 fan part numbers rather than implying a revision order) | ||||
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01:40 (cur | prev) +9,242 Josh talk contribs (Rebuild from IBM SA38-0037-00 and SY33-0125-1: the 5379 is powered FROM the 5378, not from its own mains lead, so the 'three independent PSUs' framing and both invented PSU/deflection tables are removed; added the real 5378 and 5379 card-level FRU lists, the 6 A fuse, the four PSU LEDs, the P3 pinout, the -5.2 V rail, IBM's 25000 V and 800 V hazard labels, the documented 5379 capacitor-connector arcing fault and ECA037; fixed the red link to the XT guide; cleared Unverified data) | ||||
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01:42 | IBM 3270 PC/G Capacitor Replacement Guide 2 changes history +4,207 [Josh (2×)] | |||
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01:42 (cur | prev) −7 Josh talk contribs (Fix red link: IBM 5371 has no page of its own) | ||||
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01:38 (cur | prev) +4,214 Josh talk contribs (Rebuild from IBM SA38-0037-00: the 5278 is powered FROM the 5279, so the page's 'three independent PSUs' and the whole invented 5278 PSU and 5279 deflection tables were wrong and are removed; IBM publishes only whole-unit FRUs for both; fixed the red link to the XT guide; added real FRU numbers, 5371 slot map, 5279 specification and two documented non-capacitor faults; cleared Unverified data) | ||||
| N 01:28 | IBM Personal Computer Family Service Information Manual diffhist +2,985 Josh talk contribs (Create documentation page for newly hosted IBM field service manual (RTC verification drive)) | ||||
| N 01:28 | IBM 3270 PC Maintenance Information diffhist +2,754 Josh talk contribs (Create documentation page for newly hosted IBM field service manual (RTC verification drive)) | ||||
| 01:24 | Upload log Josh talk contribs uploaded File:IBM 3270 PC AT G and GX Maintenance Information SY33-0125-1.pdf (Upload IBM field service documentation from bitsavers for the RTC verification drive) | ||||
21 September 2026
| 21:51 | IBM 3270 PC/GX Capacitor Replacement Guide diffhist +20 Josh talk contribs (Verification drive: flag unverified component data pending check against a primary source) | ||||
| 21:51 | IBM 3270 PC/G Capacitor Replacement Guide diffhist +20 Josh talk contribs (Verification drive: flag unverified component data pending check against a primary source) | ||||