After running out of options for trying to understand the interface, I
decided to pull my scanner to pieces earlier this evening. Canon had done
a good job with one-piece moulded plastic and unnecessary amounts of glue,
but I got the glass off and removed the PCB cover without breaking
anything. And yes, they've gone out of their way to cut corners.
Findings:
(1) LM9830 chip, courtesy of National Semiconductor (note: parallel port
chip).
(2) GL640 USB-to-parallel convertor. Docs are fairly inpenetrable, though
I hoped someone here might have come across this chip before: it's a
standard one used in printers, IIRC. Anyway, here's the link:
http://www.genesyslogic.com/gl640ucb.htm
(3) One other large chip (an SBT, SB61H1024AS-12), which looks like RAM,
plus other small ones (I've noted numbers and taken photos of the PCB for
posterity).
So it looks like we're dealing with a parallel port scanner with a USB
interface tacked on. Any suggestions as to where to start...?
Cheers,
-- Simon Heywood <simon.heywood@physics.org> website: http://www.warwick.ac.uk/~phucq/-- Source code, list archive, and docs: http://www.mostang.com/sane/ To unsubscribe: echo unsubscribe sane-devel | mail majordomo@mostang.com
This archive was generated by hypermail 2b29 : Tue Jun 12 2001 - 17:30:58 PDT