[CQ] Konica 7228 was getting dark copy with streaks.

[rbazan]

Konica 7228 was getting dark copy with streaks.
I cleaned all the parts around the drum out.
Checked and cleaned the Main Corona.
After I finished it got darker!


I think it's a Main Corona grid bias or developer bias problem.


I do not want to invest in a Drum and Developer unless I really need to.


Anyone know where to start testing.


You can see a sample of copy at

https://www.clearcopyservice.com/002.jpg

Thanks

[Luther]

Re: Konica 7228 was getting dark copy with streaks.

Looks like the charge corona and grid, replace them, you can also adjust the charge voltage in 36 mode to lighten the copies, adjust the grid voltage it might help for a bit, check the drum count also