Minolta bizhub 350 Black and White Copier "lacs" Questions

...problema, debe revisarse en el chat de dell me dijeron lo siguiente 05/15/2008 09:09:48AM Agent (LACS TC David Salinas): "presione la flecha hacia arriba y hacia abajo al mismo tiempo y encienda

For a Bizhub 350, how often should the drum get replaced? For bizhub 350, drum should be replaced on 1 lac copies.

my bizhub 350 is starting to make " dirties copies" I´m having problem with my biz six months old and 90000 copies made. Often I get copies unclean. Proper service and periodic maintenance is required