MX-3501N light prints

[tonerhead4u]

MX-3501N has light prints (black) even with 22-6. System settings print exposure setting is maxed to dark, DR & DV 56k. This machine has basiclly been this way from new. Customer just now seeing it as an issue. Anyone have any suggestions.

[OMD-227]

Is this affecting colors as well, or only black?
What is the values of dev stir 25-01 when its finished the cycle?

If the values are close to 128, check toner save modes are not activated, return both system settings Print & Copy density back to normal, run a full color calibration 44-06, 44-26, 46-24, 67-24.

[mtech]

How do the copies look if you take the machine out of auto exposure and use manual (text)?

[OMD-227]

Problem stated is printing quality, not copying.

However, if b/w printing is faint, copies will be bad as well.

Gotta fix the engine first.

[mtech]

Sorry, I read the post too quickly. You are right either way. Engine must be calibrated first. I remember having light cq problems right out of the gate with some of these. It was only with copying though. If you set exp. to manual copies looked much better.

[glewisme]

If it's only on black try setting SIM 46-1 to mode 1 and recalibrate,also as Wazza said sim 25-1 when done should be at or near 128.

[tonerhead4u]

DV bias adjustment took care of the issue. Thanks all.

[glewisme]

By the way sorry 46-19 ,funny I can fix a copier but have yet to learn typing skills!