HP LaserJet 4345mfp Series Service Manual - ENWW

Random image repetitionPossible cause1 If an image that appears at the top of the page (insolid black) repeats farther down the page (in a grayfield), the toner might not have been completelyerased from the last job. (The repeated image mightbe lighter or darker than the field that it appears in.)Solution1 Change the background darkness of the field thatthe repeated image appears in.2 Change the order in which the images areprinted. For example, have the lighter image atthe top of the page, and the darker image fartherdown the page.3 From the software program, rotate the wholepage 180° to print the lighter image first.4 If the defect occurs later in a print job, turn theMFP power off for 10 minutes, and then turn theMFP power on to restart the print job.Image-formation troubleshooting 387