how to repair touch pannel button with wd40. . xerox

how to repair touch pannel button Xerox or any copier

[@manikhan5112]

Behtrren sir

[@talentofindia3587]

Xerox adf 5855 paper not picking all sensors and all lubbers good and correct but once if u put on original s on adf it's showing error ..Miss fire please remove papers ,,,,,?

[@XEROXA2Z]

Need to change adf scanner board than upgrade firmware

[@muddesrhameed5276]

Sir mobile nbr plzz