File:Apple Lisa DataPower Power Supply Schematic (reverse-engineered).pdf

A two-sheet schematic of the DataPower power supply used in the Apple Lisa and Macintosh XL, titled 'Apple X/Lisa "DataPower" Power Supply', revision B, dated 2002-01-12. It was reverse-engineered from the boards, not issued by Apple. Sheet 1 is the power board (assembly 99P0073-000 rev. J): mains input with 3 A 250 V fuse, X capacitors C1 and C7 (330 nF), 470 µF reservoir pair C8 and C9, 115/230 V selection, LM7805C standby regulator, output rectifiers and filter capacitors (C24 4700 µF 6.3 V, C25 1000 µF 50 V, C26 4700 µF 16 V). Sheet 2 is the control board (assembly 99P0108-000 rev. C) built around an SG3524 PWM controller. The drawing's own notes say to use it at your own risk. Described on Apple Lisa DataPower Power Supply Schematic (reverse-engineered).

http://bitsavers.org/pdf/apple/lisa/hardware/Power_Supply/LisaDataPower-1-B.pdf and LisaDataPower-2-B.pdf (retrieved 2026-09-30), combined into one file.

Drawn by JDM, checked by TS; corrections address given as Sigma Seven Systems.

Licence not stated at source. Community reverse-engineering work, hosted for repair reference.