Xerox workcentre 7232 this copier was coming on bet no display on keyboard so i removed the keyboard and check bet on putting it back i forget connecting the keyboard after i on the copier i discover i haven't connect the keyboard so i turn it off and connect it bet when on it now it can't came on again. the only thing i can see now is the data light that blink 3 times and off.and the small fan at the back that is turning.i need help.thanks in advance.