HP 8550mfp Service Manual - Page 459
Color balance adjustment, Changing the Detail Half-tone Adjust and Smooth Half-tone Adjust
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Color balance adjustment CAUTION Adjusting the color balance changes the printer's calibration. Because this procedure adjusts parameters within the printer hardware, it will affect all print jobs. The printer automatically recalibrates the color settings. However, you can adjust the color manually from the default settings by changing the densities of the four toners (black, cyan, magenta, and yellow). Changing the Detail Half-tone Adjust and Smooth Half-tone Adjust allow you to independently adjust the color of objects on a page that use the smooth and detail half-tones (such as text and graphics). Any settings you change remain in effect until you change them again or restore the factory defaults. Do not perform the color balance adjustment procedure until all of the following troubleshooting methods have been completed: Experiment with the printer driver and application settings to adjust the color output. For more information about application settings, see the online help. Clean the density sensor (see page 114). Complete the troubleshooting solutions earlier in this chapter for the color printing problem you are experiencing. EN Color balance adjustment 457