Black lines in grayscale in c360 e c364

[informaticaoffice]

Hi you know why on the Konica c360 and konica c364 after 60000 prints I have to change the main charge. For black lines in grayscale.
Thanks in advance for your reply
51057

[blackcat4866]

Is there a question there? It looks like a worn primary charge roller to me. =^..^=

[femaster]

In those last 60K pages, has anybody bothered to use the charge corona cleaner? I bet if they did you wouldn't have those lines right now. Try cleaning the corona wires and I bet things will at least improve. If they haven't been done at all, you may need to swipe them 15 or 20+ times to get all the crust off them.

[Todd Glenn]

If it's expired, change the developer unit. Excessive toner dust , or excessively high compensation voltage, can cause premature corona wire failure.