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Macintosh Processor Upgrade Service Source

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The Macintosh Processor Upgrade volume of Apple's Service Source is Apple's 11-page service manual for the Macintosh Processor Upgrade, a PowerPC 601 card for Macintosh models built around the 68LC040. The PDF was created on 2 November 1995 for the Service Source CD.

Apple lists these machines as able to take the upgrade: Macintosh Quadra 605; Macintosh LC 475, 575 and 630; Performa 475/476, 575/577/578 and 630/630CD/635CD/636/638CD (Basics p. 1). The card carries the PowerPC 601 and a socket for the machine's own 68LC040, so the owner can switch between the two processors.[1]

Contents

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  • Basics: General Information (p. 1; PDF p. 3)
  • Specifications: Macintosh Processor Upgrade (pp. 1-2; PDF pp. 5-6)
  • Troubleshooting: General (p. 1), Symptom Charts: General Problems (pp. 2-4) (PDF pp. 8-11)

What it settles

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  • Requirements and specifications: system software 7.5 or later; PowerPC 601; the host must have at least 8 MB of RAM; 4 MB of ROM on the card; 256K of cache, upgradeable to 1 MB; operating temperature 10-40 °C.
  • Symptom chart for a machine that will not start with the card fitted: reseat the card, confirm at least 8 MB of RAM, then replace the card.
  • The card is switched on or off in a control panel. After switching it on, choose Shut Down, not Restart, or the machine starts with the card still off; Apple also says to wait 10 seconds before switching back on when turning the card off for an older application.
  • A PRAM reset turns the card off; turn it back on afterwards and reset the date, time, monitors and file sharing.

What this manual does not contain

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  • No take-apart, upgrade or adjustment procedures and no parts list. Fitting instructions are in the Upgrades chapter of each host machine's Service Source, for example the Macintosh LC Series/ Quadra 605 Service Source, which also lists the kit contents (the card, 256K cache card, 040 heat sink and hook-and-loop fasteners).[1]
  • No clock speed for the 601.
  • No schematics or component data.

Pages that cite this document

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References

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  1. ↑ 1.0 1.1 Apple, Macintosh LC Series/ Quadra 605 Service Source, Upgrades, Macintosh Processor Upgrade pp. 23-27; the same note appears in the LC 630/Quadra 630/ Performa 640 Service Source, Upgrades, Processor Upgrade p. 2.

Download: Macintosh_processor_upgrade.pdf (137 KB)


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