Hi, All. I have a M026 that had a small nick in the drum of the K pcu that damaged the cleaning blade causing a streak and spots. I pulled another pretty fresh K PCU/DEV unit from another machine, installed and reinitialized developer. Within one day the drum was so pitted it was causing spots everywhere. I received a new pcu which I installed with the original dev unit and a transfer belt assy, reinitialized the developer. Within 2 hours the drum was severely pitted. There is no leaking developer. There is nothing inside the machine cavity that is out of the ordinary. Developer set was successful. Having new units damaged immediately is not a good thing for any tech. What am I missing? Have any of you guys seen this before?
I fitted a brand new dev unit and pcu, completely vacuumed all toner from the supply tube. I found some weird particulates in the toner, so I installed a cart from a different lot #. All seems to be good now.
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