HP LaserJet 8000 Multifunction Printer series - Manual (Page 187)

Chapter 5 Problem Solving 187
Correcting Output Quality Problems
Light Print or
Fade Toner Specks
(front or back) Dropouts Lines
Gray
Background Toner
Smear Loose
Toner Repeating
Defects
Misformed
Characters Page Skew Curl or
Wave Wrinkles or
Creases