Hi, I bought a CanoScan D1250U2 two years ago which I would like to use with Linux now. Although from time to time there where people working on a backend its still unsupported. Last thing I heard of it was that Norbert Lataille did achieve some functionality 3 years ago. When I tried to contact him I did'nt get an answer.
Robert Jansen 3 years ago speculated that a SQ Scan09 ASIC and a Philips ISP1581 USB 2.0 Controller might be used in the D1250U2. To make sure I opened my scanner, removed the electromagnetic shield from the circuit board and shot some photos. What I found was that: http://jens-herrmann.gmxhome.de/MB-D1250U2.JPG >From left to right: * IC1: http://jens-herrmann.gmxhome.de/IC1.JPG is a IS41C16256-25K (DRAM) * IC2: http://jens-herrmann.gmxhome.de/IC2.JPG 128 Pin, has no logo or type on it, the 610800009721 is a Part-Nr. . I was not able to identify this IC. * IC3: http://jens-herrmann.gmxhome.de/IC3.JPG is a L66219 (Step-Motor driver) * IC4: http://jens-herrmann.gmxhome.de/IC4.JPG 48 Pin, has no logo or type on it, the 610800010009 is a Part-Nr. which is listed here http://www.hkinventory.com/public/OfferInventResult.asp?Order=1&pnums=610800010009&crit1=&crit2=&category=&product=&keywords=&words=3&country=&postdate=&brand=&crit3=&crit4=0&datecode= and here http://www.hobid.com/bin/sep.php when you search for it, but the type can't be found there too. I was not able to identify this IC either. What can be said is that the ISP1581 is not used here, because it is a 64 Pin type. Can anyone help with identification? What would a repair shop do when in need for one of these IC's? I called up a reseller for electronic components but they could'nt help. I also would appreciate code examples for the D1250U2. Please send an Email to [email protected] when working on the backend. Thanks in Advance Jens Herrmann (from Germany)
