Touch screen. i have a copier aficio 401 whose ontrol pannel is not functioning thus rendering the

Question

i have a copier aficio 401 whose ontrol pannel is not functioning thus rendering the whole copier useless. what could be the problem?copier richo 4427 has error cobe E42-E41. the problem goes to the motherboard on swarping with another board, which IC should i relplace?my address njetimøyahoo.com