Colored lines running horizontal on page. Image components (drums,developers, transfer belt have been replaced and machine has been calibrated. Only happens on color prints/copies. Black and white are fine. Customer was running a large print job in color, trouble started in the middle of job. When the problem first started maybe half of the page was shaded in a particular color . I know the firmware is a level behind. I have attached a sample of what it looks like now. Thank you for any input.
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