Hello need help
I install new drum unit and new developer unit on an Minolta Bizhub 421. I run in service mode TCR Adjustment the copier work fine but after 4 day cylinder was broken. I enter in service mode and i enter in service mode at "part counter" and i noticed the developer and drum is with this "--------------" I attach a pictures to see.What is the correct procedure to setup the drum unit and developer unit to install ???? I run only TCR Adjustment , I need to take another step ????
Thank You .
IMG_20171021_091925.jpg
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