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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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