Need Help HP370 Print Passes Not Aligned

What media do you print? We had a similar issue with a customers printer, the media (a thin paper) slides between the lower rubber roller and the upper pinch rollers. could be that you need to clean the rubber rollers.

Maybe decreasing the input roller tension in the profile settings would help too.

 

The OMAS-Sensor is the Sensor in the platen who controls the feed amount (sometimes you see it through thin media, is a red light flashing below the media). This sensor could run into problems with very smooth media backs like PET, because it reads the structure of the back to do its job. And of course it could be defect.

Regularly if the feed wont work correctly, the maximum will be grainy prints and rough printed edges in feed direction.

If your problem results from a defective OMAS, you can switch it off in the media profile settings and do a manual feed adjustment through print quality menu (print the sample, check the best feed value and set it in media profile settings). But could be too that the OMAS-Error is a result of sliding media.

 

try the printhead alignment . If the automatic printhead alignment does not work , or you even get an error, there could be a possibility that the line sensor is dirty and just needs a cleaning with a cotton swab.