Phaser 6180 Color Laser Printer Service Manual 5-17
Print-Quality Troubleshooting
Gradation ESS
This test print provides 2 - 100% density for cyan, magenta, yellow, or black 
on the whole page. This test is used to identify problems with the printer 
function or the Image Processor Board. Compare the print with the following 
chart to determine the problem.
■ Fail: Check the printer function.
■ Pass: Check the Image Processor Board.
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