HP LaserJet Pro 4001dw Monochrome Wireless Printer - Manual (Page 111)

NOTE: The term “fusing” refers to the part of the printing process where toner is affixed to paper.
The following examples depict letter-size paper that has passed through the printer short edge first.
Table 6-5 Banding defects
Sample Description Possible solutions
Dark or light lines which repeat down
the length of the page, and are wide-
pitch and/or impulse bands. They might
be sharp or soft in nature. The defect
displays only in areas of fill, not in text or
sections with no printed content.
1. Reprint the document.
2. Try printing from another tray.
3. Replace the cartridge.
4. Use a different paper type.
5. Enterprise models only: From the
Home screen on the printer control
panel, go to the
Adjust Paper Types
menu, and then choose a print
mode that is designed for a slightly
heavier media than what you are
using. This slows the print speed
and might improve the print quality.
6. If the issue persists, go to
support.hp.com .
Table 6-6 Black page
Sample Description Possible solutions
The entire printed page is black.
1. Visually inspect the cartridge to
check for damage.
2. Make sure that the cartridge is
installed correctly.
3. Replace the cartridge.
4. If the issue persists, go to
support.hp.com .
102 Chapter 6 Solve problems