RetroTechCollection

Macintosh LC 630 DOS Compatible Troubleshooting

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The Macintosh LC 630 DOS Compatible is a Macintosh LC 630 fitted with a DOS-compatibility card (a 486 processor on a card, sharing the Mac's drives and display). The Macintosh side is electrically identical to the standard LC 630, so the Macintosh LC 630 Troubleshooting page applies in full for the Mac hardware.[1]

Macintosh LC 630 DOS Compatible. Source: Wikimedia Commons.

DOS-card specific notes

  • If the Mac side works but DOS will not start, check the DOS card is seated in its slot, that its RAM SIMM is fitted, and that the shared IDE/drive resources are configured. A faulty or unseated DOS card should be removed to confirm the Mac boots normally on its own.
  • Switching between the Mac and PC sides is done in software (or a keyboard hot-key); a machine that appears "stuck" may simply be showing the other side's output.

Common faults (shared with the LC 630)

As with the LC 630, check the PRAM battery for leakage and corrosion, recap where needed, and confirm the power-supply rails. Full detail is on Macintosh LC 630 Troubleshooting.

References

  1. ↑ Apple Service Source and Low End Mac, LC 630 / Quadra 630 family. Source for the LC 630 DOS Compatible configuration.
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