Compare your sample with the images and descriptions in this section to diagnose the problem.
The colours in the examples vary due to the different ways in which the images have been produced, and will not match your colour test sheet exactly.
Click on an image to view an enlarged version.
Issue 1. Vertical white lines(s) in the print (across all colours).
There are one or more gaps in the print across all colours, depending on the orientation of the page: Vertically from top to bottom in portrait, or horizontally along the bottom of the page in landscape.
The laser is obstructed by loose toner powder or an incorrectly-installed toner cartridge.
Issue 3. Teardrop marks, scuff marks and/or scratch marks (across multiple colours).
Some vertical white lines, teardrop marks or stains, scuff marks or small gaps appear in the print at the left and right edges. The distance of two vertical lines is about 20mm, or a multiple of 2 (Figure 10, Figure 11).
Vertical Marks appear across multiple colours (Figure 7, Figure 8, Figure 9) in the print and are likely to be visible on the photoconductor unit (PCU) (Figure 12).
There is a problem affecting the transfer belt in the photoconductor unit (PCU).