Xerox 1235N Troubleshooting Guide - Page 91
Interpreting the TestPrint, What To Look For, Advanced Features and Troubleshooting Manual
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Maintaining the Printer Interpreting the Test Print The Color Balance test print contains numbered images that indicate possible adjustments that can be made. You can choose to make an adjustment to the Color Density, the Black Density, or the Color Balance. I The Black Density Images, numbered -3K...0,...+3K, show a lightness/darkness range of 30% halftones using black only. I The Color Density Images, numbered -3CMY...0,...+3CMY, show a lightness/darkness range of 30% gray halftones using three colors (cyan, magenta, yellow). I The Color Balance Images, numbered 0,10,11,...21, show variations of three-color gray. Each of these circles contains gray with tints of other colors. What To Look For There are three things to look for in examining the test print. I The Color Density and the Black Density are a matter of taste. The 30% halftones can be used to judge the current level and decide on a preference. I The Color Density and Black Density should be at approximately the same level. This is important in order to make the Color Balance adjustment. I The correct Color Balance is determined by comparing the circle in the center of the Color Balance object marked "CURRENT" with the gray background. The background is produced using black only and the circles are produced using a combination of cyan, magenta and yellow. The adjustment objective is for the "CURRENT" circle to be the closest gray of any of the circles when compared to the gray background. Advanced Features and Troubleshooting Manual 75