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Chilton's Guide to Macintosh Repair and Maintenance

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Chilton's Guide to Macintosh Repair and Maintenance is a 1986 book by Gene B. Williams, published in paperback by Chilton Book Company of Radnor, Pennsylvania, ISBN 0-8019-7639-1 (Library of Congress TK7887.W535 1986, card number 85-48271).[1] The Library of Congress record gives the extent as xii, 212 pages.[2]

It is a third-party book, not an Apple publication. It is written for owners of the 128K and 512K Macintosh, and works at the level of a multimeter and the board: supply-connector voltages, drive signal-cable pinouts, a check of the drive controller chip, and the 128K-to-512K and beyond-512K RAM upgrades.[3]

Contents

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Page numbers are from the book's contents list.[3]

  • Preface, p. xi
  • Introduction, p. 1 (tools needed, p. 4; optional tools, p. 8)
  • Chapter 1: Best Results/Minimal Time, p. 11 (safety, danger spots, measuring voltage, soldering)
  • Chapter 2: Diagnosis: What's Wrong With It?, p. 35
  • Chapter 3: Diskettes and Software, p. 47
  • Chapter 4: The Disk Drives, p. 60 (incoming power, signal cable, drive swap, drive controller chip, write-protect sensor, hard drives)
  • Chapter 5: Troubleshooting the Boards, p. 86
  • Chapter 6: Power Supplies, Keyboards, Printers, and Monitors, p. 104
  • Chapter 7: Periodic Maintenance, p. 137
  • Chapter 8: Upgrading Your System, p. 147
  • Chapter 9: Dealing with the Technician, p. 170
  • Chapter 10: Troubleshooting Guide, p. 175
  • Appendix A: Making a Case Popper, p. 178
  • Appendix B: Taking Apart the ImageWriter, p. 183
  • Appendix C: 1 Meg+ RAM Upgrades, p. 190
  • Tables and Charts, p. 194
  • Glossary, p. 202
  • Index, p. 208

What it settles

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The book's supply check is made at the 10-pin power connector at the right rear of the main board, pin 1 nearest the front. Its pin table gives pin 1 composite video, 2 horizontal sync, 3 speaker, 4 vertical sync, 5 +5 V, 6 and 8 ground, 7 −12 V, 9 +12 V and 10 battery. It accepts 4.75-5.25 V on pin 5 and 11.25-12.75 V on the 12 V pins, and notes that the supply needs a minimum load and should not be tested fully disconnected.[4] These limits are the author's, not Apple's. Apple's own voltage adjustment procedure for the 128K and 512K is on Macintosh 128K/512K Service Source; where the two differ, follow Apple.

Tools: most case screws are T-15 Torx, and the two under the handle need a shaft at least 8 inches long. The book describes making an extended driver and, in Appendix A, a case-splitting tool.[5]

What this book does not contain

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There are no Apple part numbers, no Apple parts list and no factory schematic. The safety and measurement chapters are general electronics practice applied to the Macintosh. The hosted scan is 242 pages, including the covers.

Pages that cite this document

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Download: Macintosh Repair and Maintenance Chilton 1986.pdf

References

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  1. ↑ Gene B. Williams, Chilton's Guide to Macintosh Repair and Maintenance (Chilton Book Company, 1986), title page and copyright page (PDF pp. 3-4).
  2. ↑ Open Library, Chilton's guide to Macintosh repair and maintenance, record OL2552848M, from Library of Congress catalogue data. Retrieved 2026-09-30.
  3. ↑ 3.0 3.1 Williams, Chilton's Guide to Macintosh Repair and Maintenance, Contents, pp. vii-x (PDF pp. 6-9).
  4. ↑ Williams, Chilton's Guide to Macintosh Repair and Maintenance, Chapter 5, Test the Power Supply First, pp. 90-92 and Table 5-1 (PDF pp. 101-103).
  5. ↑ Williams, Chilton's Guide to Macintosh Repair and Maintenance, Introduction, Tools You'll Need, pp. 3-4 (PDF pp. 14-15).
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