Savin 2522 adf sees A4 instead if letter

[SKTeK315]

Hey guys. Got a Savin 2522 adf sees A4 instead if letter. Any thoughts ?

[Fearless V K]

Check original length sensors (may just be dirty). You can also check their readings in SP mode.

[SKTeK315]

I did. Even took apart orig tray & realigned rack n pinion

[Vulkor]

Took off ADF table and cleaned the 3 copper prongs that tell board the Width? Board could also be caked with junk.

[SKTeK315]

Yes I did. Clnd, reformed prongs for better contact. Clnd under & top of that pwb. What else you got

[Vulkor]

have had the board go bad due to amount of dust/toner/goop on the contacts. So could be bad board?. The orignal length sensors are those eyes you probably have cleaned. Does that model have an input check to see if they are recognizing paper hitting them? Also this model have that sensor on the side you can only clean/get to by taking off back/front and side cover to get to?

[SKTeK315]

Where's this side sensor exactly & how far does the paper has to go together to it. Mine just gets over the doc head's hump to go down & which ones are responsible for this misreading ? I only tried w/letter size. It does, recognize change in direction but still sees it as A4.
I did find something weird. In NVM or in firmware or something NAME, it says "RUSSIAC... Plus 1 more letter. I couldn't find where to change that. It was only "Disply item".