From: "Henry Garcia" <compdata@nb.net>
To: "greg kaslowski" <debian_m68k@hotmail.com>
Subject: Re: Keyboards?
Date: Thu, 22 Jun 2000 20:25:59 -0400
Greg:
Check out this website for support on any Macintosh system.
http://support.info.apple.com/applespec/applespec.taf You can use an IBM
compatible 72 pin SIMM fast page mode chip non parity in the one available
72 pin SIMM memory slot. You should be able to boot up, though, with the 4
mb of chips soldered on the logic board with any working system. You
don't
need any additional RAM. You can use a 4MB, 8MB, 16 mb, or a 32 megabyte
SIMM. Use a volt meter on the battery, It's supposed to be 3.6 volts. You
can use any comparable Lithium battery. Just as long as you can get the
juice to the appropriate positive and negative connections on the board.
But
if you're getting a chime when you turn it on, the board sounds OK. Did you
try the monitor on a system that accepts the same connection for video on a
Mac? That's the easiest way to troubleshoot your situation. Stick the
monitor on your IIci. Does it work?
Basically, if you hear the chime, the motherboard is good. And within about
30 seconds after turning on, you should see the monitor flash on. If you
hear more than one note, like a series of notes, the motherboard is
working,
just some other component is sending an error message to the CPU.
Check for floppy or hard drive cables that are not connected correctly.
Just
take all the floppy and hard drive cables off. If you get a picture then,
your cables are bad or not hooked up appropriately.
I'd be interested in the parts if you give up.
http://support.info.apple.com/info.apple.com/applespec/applespec.taf?RID=48
----- Original Message -----
From: "greg kaslowski" <debian_m68k@hotmail.com>
To: <debian-68k@lists.debian.org>
Sent: Friday, June 23, 2000 12:23 AM
Subject: Re: Keyboards?
> I did a little research over the night, and know know my LC 475 doesn't
have
> any ram (on a sim that is). It has 4megs of RAM on the motherboard, but
I
> could not find any info on whether is it OK to have only this onboard
memory
> or you need more memory in addition to it.
>
> What I assumed were main-core ram were infact video-ram sims. Can an LC
boot
> with just 256k of video ram (1 sim)? I tried removing one of the sims,
> booting, then swapping, but that didn't change anything (hoping one was
> bad).
>
> There is what I believe to be a powerswitch on the keyboard in the upper
> right hand side, but that will not turn off the system, it seems wedged
> rather tightly.
>
> I'll play with it a bit more, but in a week or so if anyone needs the
vram,
> cpu, mobo, (the case has a theft prevention thing glued to it, so it
doesn't
> look great) email me and you can have the parts for postage. I'll hold
onto
> the ps, HD, and floppy though.
>
> One other thing I'll try is replacing the battery, maybe it's dead, I
read
> somewhere that could make them lock up on boot, i386's with dead
batteries
> get weird, but you should be able to get to the bios setup.
>
>
>
>
> >From: Rick Todd <rdtodd@i2020.net>
> >To: "greg kaslowski" <debian_m68k@hotmail.com>
> >CC: debian-68k@lists.debian.org
> >Subject: Re: Keyboards?
> >Date: Thu, 22 Jun 2000 19:10:05 -0400
> >
> > >I finally got a keyboard/mouse. Very neat. I got it along with a
broken
> >LC
> > >475. Does the LC normally (or machintoshen in general) boot up with
> >music?
> > >The LC, just plays this music that's all it does. It doesn't show
> >anything
> > >on the monitor. Any chance the type of music might indicate what the
> >problem
> > >is. the 9th symphony when your hd has crashed, or dance of the
sugarplums
> > >when mem-check fails? If nothing else I'll put the HD in my IIci.
Double
> >the
> > >space man! Though I gotta figure out a way to secure it inside the
case.
> > >Maybe get a bracket and epoxy it near the ram in the front corner.
> >
> >Hey, Greg. All Macs start up with a single chime/chord. If you are
hearing
> >a tune, it is the Chimes of Doom, meaning a hardware test failure
> >(unfortunately, your idea about different music to indicate different
> >problems has never been implemented; great idea though:-). This is
before
> >it even looks for software/HD (outside of the ROM), I believe. So it is
> >definitely hardware.
> >
> >Most common cause IME is mis-seated RAM, mis-seated other chips/cards,
> >mis-seated ribbons or SCSI cables to drives, etc. On a Quadra 630, it
was
a
> >mis-seated motherboard. Second choice, bad RAM chip. Last choice, bad
> >motherboard. That's all I've ever run across, FWIW.
> >
> >Good luck. Rick
> >
> >
> >
> >
> >--
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>
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