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27 September 2026
| 10:35 | IBM PS/2 Model 70 Troubleshooting Guide diffhist +643 Josh talk contribs (Rebuild against Ardent Tool's 8570 planar pages and IBM's error/FRU lists: replace the hand-transcribed POST tables (104 was not a protected-mode failure, 114 not a paging test, 151 and 365 are not in IBM's list, 162 is not a checksum error, 2401/2402/2403/2408 are not in the 24xx family, and the coprocessor family is 7xx not 8xx) with the single reference on the Model 50 guide; '161 - replace DS12887' was wrong (the Model 70 takes a 6 V pack, FRU 72X8498); replace the three invented ECAs wit...) | ||||
25 September 2026
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00:20 | IBM PS/2 Model 30 2 changes history +156 [Josh (2×)] | |||
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00:20 (cur | prev) −99 Josh talk contribs (P4 verification: remove the now-duplicated manual link bullet (superseded by the fuller documentation line)) | ||||
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00:19 (cur | prev) +255 Josh talk contribs (P4 verification: link the IBM manuals hosted on this wiki that document this machine (they were unlinked from every article)) | ||||
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00:20 | IBM PS/2 Model 25 2 changes history +88 [Josh (2×)] | |||
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00:20 (cur | prev) −96 Josh talk contribs (P4 verification: remove the now-duplicated manual link bullet (superseded by the fuller documentation line)) | ||||
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00:19 (cur | prev) +184 Josh talk contribs (P4 verification: link the IBM manuals hosted on this wiki that document this machine (they were unlinked from every article)) | ||||
| 00:19 | IBM PS/2 Model 70 diffhist +217 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 PS2 Model 70 Technical Reference Oct90.pdf diffhist +1,347 Josh talk contribs (P4 verification: real File: description - document identity from its own title page, page count, honest source note and honest licence block) | ||||
| 00:17 | IBM PS2 Model P70 Technical Reference (April 1989) diffhist +2,317 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 PS2 Model 70 Technical Reference (May 1988) diffhist +2,585 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 PS2 Model 70 Hardware Maintenance Reference diffhist +3,308 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
| 03:33 | IBM PS/2 Model 30 diffhist +4,256 Josh talk contribs (Rebuilt against IBM's Model 30 Technical Reference and announcement letters plus the ardent-tool planar maps. Three figures were wrong: the 8086 Model 30 DOES have a real-time clock (NS MM58167AN at U16, IRQ2, with the 3 V lithium cell on the RISER at B1, not on the planar); the fixed-disk interface is a dedicated 44-pin I/O channel with the controller on the drive, not ST-506; and the supplies are 70 W (8086, internal sensing) and 90 W (286, switched) - there is no 80 W unit. Also fixed two...) | ||||
| 03:31 | IBM PS/2 Model 25 diffhist +2,963 Josh talk contribs (Rebuilt against IBM's Model 25 Technical Reference (hosted here) and the ardent-tool planar maps. Colour PSU is 113 W not 115 W (IBM TechRef; the Canadian quick reference rounds it) and the 286/SX are 124.5 W; the fixed disk is a dedicated 44-pin I/O-channel connector with the controller ON THE DRIVE, not an ST-506 controller or an aftermarket ST-506 kit; keyboard and mouse ports ARE interchangeable on the 8086 per IBM, so the '301 error if swapped' claim is removed; corrected the planar chip...) | ||||
22 September 2026
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00:07 | IBM PS/2 Model 70 2 changes history +9,765 [Josh (2×)] | |||
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00:07 (cur | prev) +465 Josh talk contribs (Planar table: ardent-tool gives conflicting FRU numbers for the 16/20 MHz boards across its own pages - restructure the table by board type and state the conflict rather than picking one) | ||||
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00:03 (cur | prev) +9,300 Josh talk contribs (Verified against IBM Technical Reference (Oct 1990), IBM announcement letters 188-078/188-079/189-102/189-144/189-196/191-079 and ardent-tool planar maps. Fixed: RTC is a Motorola MC146818A with a separate 6 V lithium pack (FRU 72X8498), not a Dallas DS1287/DS12887; slots are 2x32-bit + 1x16-bit AVE, not 3x32-bit; memory is 3 SIMM sockets/6 MB (16-20 MHz) or 4/8 MB (25 MHz), not 4 sockets/16 MB; fixed disk is DBA-ESDI with integrated controller, not an ESDI Fixed Disk Adapter/A card; dimensio...) | ||||
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00:05 | IBM PS/2 Model 70 Maintenance Guide 2 changes history +13,354 [Josh (2×)] | |||
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00:05 (cur | prev) +195 Josh talk contribs (Add system photograph) | ||||
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00:03 (cur | prev) +13,159 Josh talk contribs (Verified against IBM Technical Reference (Oct 1990) and ardent-tool. Fixed: PSU rail table replaced with IBM service limits (+5 V 3.7-6.2, +12 V 9.0-15.0, -12 V -9.0 to -15.0) and the fabricated -5 V rail deleted - IBM documents three DC outputs only; RTC section rewritten (MC146818A + separate 6 V pack FRU 72X8498, assembly FRU 33F5950, 5.5 V threshold), Dallas DS1287/DS12887 claim removed; cover slides forward ~50 mm, not back 10 mm; PSU is three screws, not four; unsourced 3 A keyboard fus...) | ||||
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00:05 | IBM PS/2 Model 70 Capacitor Replacement Guide 2 changes history +8,264 [Josh (2×)] | |||
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00:05 (cur | prev) +641 Josh talk contribs (Add 8570-121 planar photograph showing the through-hole dipped tantalums and the absence of SMD aluminium electrolytics) | ||||
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00:03 (cur | prev) +7,623 Josh talk contribs (Rebuilt from sourced data. Deleted the entire fabricated planar SMD-electrolytic cap table and location list (the 8570 planar has no SMD aluminium electrolytics - through-hole tantalum and SMD ceramic only), the invented 132 W PSU cap table (no component-level data published for the ASTEC AA15530), the invented ESDI card / drive / Power Platform cap values, the "Recommended Replacement Parts" summary table, the 54x1 mm belt for the Mitsubishi drive (direct-drive, no belt) and the non-existent...) | ||||
21 September 2026
| 21:51 | IBM PS/2 Model 70 Maintenance Guide diffhist +20 Josh talk contribs (Verification drive: flag unverified component data pending check against a primary source) | ||||
| 21:51 | IBM PS/2 Model 70 Capacitor Replacement Guide diffhist +20 Josh talk contribs (Verification drive: flag unverified component data pending check against a primary source) | ||||
| 21:51 | IBM PS/2 Model 70 diffhist +20 Josh talk contribs (Verification drive: flag unverified component data pending check against a primary source) | ||||