The charge corona wires and or the housing need to be replaced. the housing holds the wires which a very thin a carry a H V when operating during the copy/print cycle. Located above the drum the charge the drum. if not either of those you mite need to replace the H V board. Sir/Mam you are dealing with a legacy Minolta printer/copier. First Generation Color. You will have do some serious google.
Mite try this site as a start for parts and this site for service manual Currently Konica Minolta no longer holds the service manuals for this series of machines
Precision Roller Printer Toner Cartridges Parts and Supplies Office...
Service manuals electronic components datasheets and equipment schematics...
Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f
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