Xref: utzoo comp.sys.mac:56150 comp.sys.mac.hardware:4433 comp.sys.mac.system:807
Path: utzoo!attcan!uunet!bu.edu!rpi!zaphod.mps.ohio-state.edu!usc!apple!austing
From: austing@Apple.COM (Glenn L. Austin)
Newsgroups: comp.sys.mac,comp.sys.mac.hardware,comp.sys.mac.system
Subject: Re: Mayday, mayday, mayday - i'm in deep trouble (HELP)
Message-ID: <43139@apple.Apple.COM>
Date: 19 Jul 90 05:40:58 GMT
References: <205@sc2a.unige.ch>
Organization: Apple Computer Inc., Cupertino, CA
Lines: 40

roessli@sc2a.unige.ch (David Roessli) writes:

>Mayday, mayday, mayday ..

>    i'm experiencing deep trouble with a Mac IIx and various peripherics,
>and was wondering if any of you out there had seen anything like it before.
>Here it comes:

>Context: we've purchased a Mac IIx, 8Mb RAM, 1 external 142Mb LaCie disk, 1
>         internal 192Mb LaCie disk (Tsunami or something like that), Sigma
>         Design ColorMax 19" screen (8 bits), Apple's CD-ROM drive, Ethernet
>         board, Howtek ScanMaster II (with internal board).

>         The whole thing upgraded to version 6.0.5

>         Inits and CDevs: Suitcase, Rear window, Boomerang, On Cue, SuperClock,
>         EtherTalk and Apple CDs stuff, NBGIB handler (scanner), Vaccine,
>         GateKeeper Aid and Dimmer.

First, I would remove all but the bare minimum needed to get the machine up.
Remove the external drive, the Ethernet board, and the scanner board.  Check
to make sure that all the RAM is seated correctly in their SIMM sockets.
The dreaded "chord" can tell you a lot about what is failing.  From the sounds
of your problems, I would say that one of your cards is failing, so it sets
an internal flag (in the slot PRAM) not to reboot.  However, the next time
it reboots, it clears the flag, attempts to initialize the card and BOOM!
The dreaded chord.  However, you could have mismatched RAM SIMMs (no flames
please!  I've had this happen to me) where you have different speed SIMMs
within a bank.  Check it out and good luck!

-- 
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| Glenn L. Austin               | "Turn too soon, run out of room,          | 
| Auto Racing Enthusiast and    |   Turn too late, much better fate"        |
| Communications Toolbox Hacker |   - Jim Russell Racing School Instructors |
| Apple Computer, Inc.          | "Drive slower, race faster" - D. Waltrip  | 
| Internet:   austing@apple.com |-------------------------------------------|
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