I am getting an E6-11 Code on this machine. I have replaced DSPF control board with new board from Sharp. I have cleaned the DSPF CCD and have executed shading adjustment with no errors. The DSPF scanner illuminates when testing but E6-11 continues to display after reboot. Single sided copying and scanning is still functional but no 2 sided is available. I have the 0300 firmware installed. Any help would be appreciated.