Article View: comp.sys.mac
Article #13376Crash-Happy Mac II (possible hardware ?)
From: Richard Muise
Date: Fri, 11 Dec 1992 15:47
Date: Fri, 11 Dec 1992 15:47
42 lines
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2356 bytes
Subject: Macintosh Problems.
I was wondering if you would be able to help with a Mac problem. It is a
Mac II, with no PMMU, 4MB RAM, 1-800k drive, and 1-40MB HD. I recently upgraded
to SYS 6.0.8 (not Sys7 because , there is no 800k version of the Sys 7 disks,,
and in case of software incompatibilities.) It also has an internal NuBus 2400
modem, and an Apple 8-bit video card.
So now the problems.:
At boot time, sometimes there is a 5 note harmonic. It usually happens before
the screen goes grey (ie loads the destop background), so i guess it's a
problem with the self-test. I've taken out all the INITs, except gaurdian and
After Dark. But since the sound plays at power on, long before INIT's are
loaded i don't think it's a problem. Sometimes it will power on, load
init's and then, when the Welcome to Mac sign comes up i get more errors.
I have gotten four different errors:
System Bus Error
File System Map Inconsistant (for which i immediately rebuilt the desktop)
Unimplemented Trap
Coprocessor Not Installed (in fact the 68881 is built in)
Once i crashed into a monitor. Where the middle of the screen
puts up the Welcome to Macintosh sign, a prompt appeared, and it accepted
typed letters (i typed them , then deleted them before i messed up something
important).
One final problem, once it got as far as the Welcome picture,
when the screen went black, witha small 'Dead Mac' picture
Below it where the numbers :
0 0 0 0 0 0 0 F
0 0 0 0 0 0 0 A
(memory locations?). Is there any where i should look for problems. All
the chips and wires inside _seem_ to be seated right. What does the five
note harmonic mean? Should I post to comp.sys.mac.help.my.mac.is.dead???
thanks
richard
--
Friends : Don't Let Friends Do DOS !
881045m @ dragon.acadiau.ca
881045m @ ace.acadiau.ca
Technical Details
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arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!cs.utexas.edu!sun-barr!ames!purdue!news.cs.indiana.edu!nstn.ns.ca!dragon.acadiau.ca!881045mShow Full Headers
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Newsgroups: comp.sys.mac,comp.sys.mac.hardware Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!cs.utexas.edu!sun-barr!ames!purdue!news.cs.indiana.edu!nstn.ns.ca!dragon.acadiau.ca!881045m From: 881045m@dragon.acadiau.ca (Richard Muise) Subject: Crash-Happy Mac II (possible hardware ?) Message-ID: <1992Dec11.154732.10394@dragon.acadiau.ca> Summary: Need help with Crash-Happy Mac Keywords: crash mac system boot help Organization: Acadia University Date: Fri, 11 Dec 1992 15:47:32 GMT Lines: 42