Hi. with the information i have write down, i have resolved several seemed problems.


[Symptom] Under high humidity environment (70%Rh and over) and when thick paper is used, density change appears on halftone at 2 points (at 225mm and at 380 mm from leading edge).


[Probable cause]
Separation DC current is improper.

[Solution]
1) With dipswitch setting, enable process adjustment for each tray. Service mode=> [03 System setting] => [01 Software SW Setting] : Change 01-0 from 0 to 1.

2) For each tray, process adjustment, set the [Separation DC (Front)] and [Separation DC (Back) optimum value within -20 to -30 so that the density difference is the least visible.