[sane-devel] Canon FS2720U info and comments

m. allan noah anoah at pfeiffer.edu
Tue Jul 18 19:38:58 UTC 2006

many brands of scanner use some form of scsi over usb protocol, so this 
sort of weirdness is not unusual. fortunately, this means that 
understanding the scanner's protocol should be made easier, because of how 
well documented SCSI is.


On Tue, 18 Jul 2006, Tabor Kelly wrote:

> Hello,
> I took the cover off of my Canon FS2720U to try to confirm some
> suspicions I have about the unit. The main board has what looks like a
> CPU and it is marked "Canon KINUGAWA YH4-0153." The main board is marked 
> "YG7-0172-01" in one spot and "Z923A" in another. There is a daughter card 
> marked "BL15-25-2 YG6-0004" and another marked "YG6-0003." The power supply 
> is marked "YG7-0171."
> Now, for the interesting part:
> In plain sight on the main board is a "NINJASCSI3R WORKBIT9907" chip.
> I suspect this is a Canon 2710 with a USB port slapped onto it. Could
> someone help be verify my suspicions? Google shows that the Canon FS4000 has 
> a YH4-0201 in it, I suspect the 2710 has a YH4-0153 in it, but I would like 
> verification.
> In windows, when I select the "Unplug or Eject Hardware" thingamajig from the 
> take bar, it only has "Canon Scanner SCSI Bridge Controller" listed. However, 
> USB-sniff has "Canon Scanner USB Controller" listed. When I turn the scanner 
> off a dialog box titled "Unsafe removal of Device" appears and now in 
> addition to the "Canon Scanner SCSI Bridge Controller" it also has "CanoScan 
> FS2720U" listed, but the device list in USB-Sniff has not changed.
> Thanks,
> Tabor Kelly

"so don't tell us it can't be done, putting down what you don't know.
money isn't our god, integrity will free our souls" - Max Cavalera

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