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From: kelso@mimsy.umd.edu (Stephen Kelley)
Newsgroups: comp.sys.amiga.hardware,comp.sys.amiga.tech
Subject: A3000 memory installation *HELP!* needed
Keywords: A3000, Toshiba Static ZIPS
Message-ID: <25507@mimsy.umd.edu>
Date: 13 Jul 90 13:11:07 GMT
Organization: U of Maryland, Dept. of Computer Science, Coll. Pk., MD 20742
Lines: 48

I installed 2MB (16) worth of 80ns Toshiba Static Column Zips 
in my A3000/25 and all I get on bootup is the Kickstart requester
screen w/ the Hard Disk options turned off. When I then tried to
boot from floppy I got a message something to the effect that 
"No memory found".

Obviously I hosed up something (:-{

Here's what I did:

	1) Removed the power supply/disk drive platform (NOT an easy job!
As mentioned in another posting the hard disk ribbon cable is *short*
so its hard to get the connectors off ans *esp.* on. Also, there are
3 plastic clips connecting the platform to the daughter board [to help
support the board I assume] which I found too hard to replace w/out
taking out the board.)

	2) Moved the fast mem dips to the chip mem sockets. They were
notched so I made sure the notches faced the same direction as the
surface mounted/soldered ones.

	3) Put the Zip chips in sockets C850 - C867 (the row of sockets
to the right) w/ the "label" side of the chips facing front. They
weren't notched so I had to choose one way or the other. I also
*had* to put them in by hand since they were so thin. I was "strapped
in/on" but who knows how sensitive these puppies are.

	4) Re-assembled the box. As said before the hdisk cable is a bitch
to get back in as well as the d-board clips. A word to the wise...
*Observe* the cable positions. *None* of the disk cable connectors
are notched. Red stripe (on hdisk cable) to pin 1 is a fairly std
rule (pin 1 on the m-board for both the floppy & hard drive connectors
is marked).

	4) Connected monitor, keyboard, mouse & power & turned it on.
The hdisk flashed rythmically 10-20 times then I got the Kickstart
requester. I soft booted 3-4 times and kept getting the same thing.
I finally put in the Kickstart 2.0 floppy & then I got the "no mem"
message. (I tried this a few times, too).

OK. Any suggestions? Please reply today (Fri 7/13) if possible.
I'd like to get ot working this weekend.

Thanks,
	stevek
-- 
Real:	Stephen Kelley, Welch Library, Johns Hopkins Univ.
Internet: stevek@welch.jhu.edu