RetroTechCollection

Apple II General Maintenance: Revision history

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23 September 2026

  • curprev 01:3901:39, 23 September 2026 Josh talk contribs 31,550 bytes +14,047 Verification drive: removed fabricated rail-tolerance table (Apple published none; real nominals are +5.0/+11.8/-12.0/-5.2 per Reference Manual p92) and the entire 'Voltage Regulator Maintenance' section (no 78xx/79xx on these boards); '2200uF main filter cap' corrected to 47uF 250V per Apple's Astec parts list; 'seven expansion slots' -> eight (0-7); Integer BASIC ROM socket map corrected (E0/E8/F0, D0/D8 usually empty); 2716 drop-in claim corrected (9316B chip-select polarity); removed 50%... undo

21 September 2026

21 September 2025

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