Hello there! Thank you very much for responding.
It seems that I damaged the mainboard when soldering so I cannot continue any further. Thanks, -[K] IMSOASIAN On 10/21/21, Jörn-Ingo Weigert <[email protected]> wrote: > Usually with a tool called wireshark ( > https://www.wireshark.org/download.html) and a filter enabled for usb only. > Depends on your system environment, you maybe have to install a general > purpose usb driver which enables to debug the usb traffic. > > But the last time I used wireshark, it will give you a hint if that is > needed. > > LUH LAH <[email protected]> schrieb am Do., 21. Okt. 2021, > 21:07: > >> Hello there! >> >> Sorry about that, looks like it was indeed scrubbed. >> >> I've instead uploaded them to here: >> >> https://drive.google.com/drive/folders/1-n2ABYtWhAGOW18siwKGjOc81Op7IUIA?usp=sharing >> >> ------------------ >> How do you capture a USB session? >> >> Thanks, >> >> -[K] IMSOASIAN >> >> On 10/21/21, Ralph Little <[email protected]> wrote: >> > Hi, >> > >> > On 2021-10-17 7:25 p.m., LUH LAH wrote: >> >> Hello there! >> >> >> >> I recently acquired a Canon 4200F scanner and realized after extensive >> >> research that the USB chip couldn't be found. So, I opened up and >> >> de-soldered the mainboard RF shield/Heat Sink to find a bunch of >> >> chips. >> >> >> >> I've attached said images to this message. >> >> >> >> My question is, what chip is exactly for the USB port? >> >> >> >> Thank you very much! >> >> >> >> -[K] IMSOASIAN >> >> >> > The scanner is not currently supported by SANE. >> > We do have a prior report from someone documented here: >> > http://www.sane-project.org/unsupported/canon-4200f.html >> > >> > However, I'm not aware of any active work on this machine. >> > >> > The chip marked L6219DS appears to be a PWM motor controller: >> > >> https://www.allegromicro.com/-/media/files/datasheets/l6219ds-datasheet.ashx >> > >> > The chip marked WM8196SCDS appears to be an ADC for the imager: >> > https://pdf1.alldatasheet.com/3efc5524-e7be-47c7-99d3-9d2c2ebaba01 >> > >> > There is a DRAM memory package: >> > https://www.esmt.com.tw/upload/pdf/ESMT/datasheets/M12L16161A(2R).pdf >> > >> > The other chip is probably a microcontroller of some sort, which may >> > have an integrated USB port. >> > >> > Unless you can identify the microcontroller, then analysis of captured >> > USB sessions using the Windows driver is what you have left. >> > --------------- >> > >> > I didn't get the images that you say that you have attached. They may >> > have been scrubbed in the submission process. >> > Perhaps you could reply to the list and myself with the attachment >> > again? >> > >> > Cheers, >> > Ralph >> > >> >> >
