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Home Forums 512K will not boot despite working diskdrive — #14 512K will not boot despite working diskdrive — #14
Post #14 by BEU
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Thank You all for trying to solv this problem.

I think this is a 512k not 512ke. The high ROM is 342-020 and low ROM 342-0221-A. The disk drive is Sony OA-D34V-22 and I think its 400k. I use System disk 2.0 and Finder 4.1. I have re-lubricated the mechanism with help from sadmanonatrains fine pdf guide https://docs.google.com/file/d/0B6j6P7lBWw-BNHQ4dXRYZkFGdzQ/edit?usp=sharing&pli=1 . The head is cleaned. The disk drive and diskette is working perfect with another Mac.

Techknight asked about the diskdrive. When I put in the disk the disk starts spinning constantly but the head is not moving. If I start the Mac first the diskette with questionmark appears on the screen. When I put in the diskette the questionmark disappears and the disk is spinning constantly.

If I put in the diskette first in the diskdrive and then put on the Mac: Happy Mac appear on the display but nothing more happens, no booting.

I have used both internal disk drive and an external with the same result. The connections looks OK, what about the filter HYTEK 8444 RC1150002C ? Can that be the problem?

sBtrDBP.jpg.4ba4be114a5c73dd31c71a913ce14107.jpg


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