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- Newsgroups: comp.sys.mac.hardware
- Path: sparky!uunet!brunix!brunix!omh
- From: omh@cs.brown.edu (Owen M. Hartnett)
- Subject: Re: MAC PLUS - reboots when floppy inserted. HELP! Advice?
- Message-ID: <1992Nov8.221932.24306@cs.brown.edu>
- Keywords: mac plus floppy reboot
- Sender: news@cs.brown.edu
- Organization: Brown University Department of Computer Science
- References: <Nov07.020631.22876@yuma.ACNS.ColoState.EDU>
- Date: Sun, 8 Nov 1992 22:19:32 GMT
- Lines: 26
-
- In article <Nov07.020631.22876@yuma.ACNS.ColoState.EDU> baumgard@CS.ColoState.EDU (felix baumgardner) writes:
- >
- >
- >Hello all. My mac plus is experiencing a bizarre problem:
- >
- >All is well as long as I don't use a floppy drive.
- >However, when a floppy is inserted, the machine REBOOTS! AAIGH!
- >
-
- Sounds like the voltage could be set too low. If it is, then the drain from
- thefloppy motor at surge spinup could be enough to bring down your system.
-
- Adjust the voltage, test it with a digital multimeter so you know it's on
- the money. It should be as close to 5.00 volts as possible. You can measure
- the 5volts on the middle pin of the cable harness from the power supply to
- the logic board. It's easily adjusted (the plastic shield on the bottom
- of the analog board indicates which indicator to turn). Take the necessary
- high voltage precautions with an open set.
-
- -Owen
-
-
- Owen Hartnett omh@cs.brown.edu
- "FAITH, n. Belief without evidence in what is told by one who speaks
- without knowledge, of things without parallel."
- -Ambrose Bierce - The Devil's Dictionary
-