For DIY. The alignment tools used for the Howtek 6500/7500 are the same for the Howtek HR8000/Aztek Premier. Similar procedure too.
To be honest, I initially did not put too much on the alignment thinking it was less critical than scanners with focused illuminators, like the 4000/4500. However, it's a must to check it if scanning at 8000 dpi, ie using the 3 microns aperture. Otherwise the noise could be considerable.
Bookmarks