User's Manual

Image defect ruler
Use a ruler to measure occurrences of repetitive image defects to help solve image quality problems.
Place the ruler next to the first occurrence of the defect on the page. Find the distance between identical
defects and use the figure below to identify the component that is causing the defect.
NOTE When printing this defect ruler, verify that any scaling options in the printer driver are
disabled.
ENWW Troubleshooting tools 167