HP Color LaserJet 2550 Printer series - Manual (Page 118)

Dropouts
Faded areas, generally rounded, occur randomly on the page.
● A single sheet of print media might be defective. Try reprinting the job.
● The moisture content of the paper is uneven or the paper has moist spots on its surface.
Try different paper, such as high-quality paper intended for laser printers. See
Print-
media specifications .
● The paper lot is flawed. The manufacturing processes can cause some areas to reject
toner. Try a different brand of paper, such as high-quality paper intended for laser
printers. See
Print-media specifications .
● The imaging drum might be defective. See Repetitive defects on the front .
● If these steps do not correct the problem, contact HP Customer Care. See HP customer
care or the support flyer that came in the printer box.
● If the problem is not resolved, see If the problem is not resolved .
Vertical lines
Vertical streaks or bands appear on the page.
● One or more print cartridges are low or defective. Print the Supplies Status page to
check the remaining life. If you are using non-HP print cartridges, no messages appear
on the printer control panel or in the HP Toolbox.
● Clean the printer by using a cleaning page. See Cleaning the printer .
● Use the tools on the Troubleshooting tab of the HP Toolbox to correct the problem.
● If the problem is not resolved, see If the problem is not resolved .
108 Chapter 7 Problem solving ENWW