Minolta DI-750 Grainny copies

[stevee104]

Have a machine that the copies are very grainny all voltages are set within
specs and it is know where near a pm on the dv and drum.If I go in the 36
mode and play with the voltages it will gets better for a few 100 copies
and then it repeats the same process so i just put everything back the way it was.I have not try changing anyting out at this time.