6Mcybk Horizontal Stripes (Type=10) - Canon iR C6800 Series Service Handbook

Chapter 4
F-4-2
4.1.6 MCYBk Horizontal Stripes (TYPE=10)
0001-6118
Use this test print to check the density of dark areas of individual colors, balance among colors, and white lines
associated with development.
a. Solid Density of Individual Colors and Balance Among Colors
- the density must not be appreciably low (too light).
- if the density of a specific color is too low (too light), suspect a fault in the developing system.
- if the density of all colors is low (too light), suspect a fault in the laser exposure system and the transfer block.
b. While Line
If a white line is found in a specific color, suspect a fault in the development system of that particular color.
c. Uneven Density at the Front/Rear
If uneven density is found in a specific color, suspect a fault in the development system of that particular color. If it
is found in all colors, suspect a fault in the drum unit, ITB unit, and laser exposure system.
4-76