I am curious if anyone else has had dv units lose their bias after a cartridge change? I have had a few customers over the past couple of years that after they installed a new cartridge the dv unit lost its bias. Moving the toner to a new dv unit solves the problem. I am guessing they are being too rough when changing the toner as the toner works just fine in the new dv. I am just interested in if there is a small fix to the dv units that can be made instead of swapping the whole thing out. Thanks.
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