hi sf tech,page1 junior member here in the uk.30 year copier tech veteran. Looking for help on a sharp al 1644 A3 copier-uk model number.Hoping sf stands for sharp prefix models.My client has common fault on this model Error code E7 10.Have cleaned expo lamp,works ok,cleaned optics,reflectors glass etc.Checked connector seated in correctly.Established which crop code to use,have al1220 service manual,very similar error,and fault codes.Still cant fix.HELP - THANKS