HP LaserJet 9040.9050 Multifunction Printer series - Manual (Page 161)

ENWW Correcting output quality problems 157
Correcting output quality problems
The first step in correcting output quality problems is to determine if the image defect is present
when copying and printing, or only when copying. If the image defect is present only when
copying, see
Cleaning the ADF delivery system .
If the image defect is present only when printing, use the examples in the image defect table to
determine which print quality problem you are experiencing, and then see the corresponding
reference pages to troubleshoot the problem.
Note The following examples depict letter-size paper that has passed through the MFP long-edge first.
(If the paper has passed through the MFP short-edge first, lines and repeating defects will run
vertically rather than horizontally.)
See Light print or
fade See Specks See Dropouts See Lines
See Gray
background See Toner smear See Loose
toner See Repeating
defects