Xerox 2135N - Phaser Color Laser Printer Quick Reference Manual page 189

Cyan Step Test Pattern
Magenta Step Test Pattern
176 Phaser 2135 Color Printer
0728-20
Yellow Step Test Pattern
Black Step Test Pattern
0728-21
Interpreting the Blank Print (with
crosshatch)
Each print consists of a blank page with a
single primary-colored crosshatch printed
near the top of the page. Use these pages
to identify color on non-printed areas of a
print as well as residual offsetting.
Interpreting the Step Test Patterns
The Step Test Patterns consist of 11 color
bars, starting with a100% fill of a primary
color bar and progressing in 10% steps to a
0% (white) fill bar. Use these pages to
isolate primary color imaging or LED head
problems.
Look for uniform transitions from dark to
light.