Apple Technical Procedures: Macintosh and Macintosh Plus
Apple Technical Procedures: Macintosh and Macintosh Plus is Apple's dealer service manual for the original Macintosh (128K and 512K) and the Macintosh Plus, with pages marked rev. Feb 87 to rev. Jun 87. The scan has 108 pages and a partial text layer.
Contents
[edit | edit source]From the table of contents (Apple's section-page numbering):
- Section 1, Basics: safety, CRT disposal, keyboard identification, Macintosh and Macintosh Plus differences, theory of operation
- Section 2, Take-Apart: cover, anode discharge, power/sweep board, logic board, CRT, internal drive, keyboard
- Section 3, Diagnostics: MacTest and its error codes
- Section 4, Troubleshooting: symptom chart
- Section 5, Adjustments: power/sweep board voltage adjustment (p. 5.3), yoke, video
- Section 6, Additional Procedures: Macintosh Plus disk drive and logic board kits, 800K drive exchange and ejection problems, logic board ROM upgrade and 400K drives, alternate chassis screw sizes, removing CRT overspray, ROM version compatibility
- Section 7, Illustrated Parts
What it settles
[edit | edit source]The voltage adjustment on p. 5.3 sets +12 V to 12.3 V, within 11.90 to 12.3 V, and +5 V within 4.85 to 5.15 V, measured at the disk drive port with Apple's voltage test cable. The later Macintosh Plus Service Source widens the +12 V window to 11.90 to 12.75 V.
What this document does not contain
[edit | edit source]Module-level service: no component values for the power/sweep board and no schematics.
Pages that cite this document
[edit | edit source]- Macintosh Plus Capacitor Replacement Guide: cites p. 7, pp. 27-28, pp. 29-32, pp. 51-57, p. 69
Download: Apple Technical Procedures Macintosh and Macintosh Plus 1987.pdf