Xerox Phaser 850 用户指南

Print Quality Problems   

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Clean the printhead:  in the front panel troubleshooting menu, select Eliminate Light 
Stripes. Refer to page 123 for more information.  

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Clean the printer’s internal paper path with the front panel troubleshooting routine. 
Refer to Cleaning for ink smears: paper-exit path on page 133.

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If you are using the upper media tray, make sure that the indicator switch has been set 
for the appropriate media.

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Use only Phaser 850 printer transparencies; they have been specially formulated for 
this printer.  

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For printing on transparencies, make sure that you have selected in the driver 
Transparency (for the media tray) or Manual Feed Transparency (for the manual feed 
slot).

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Try a different color correction mode or increase the print quality mode.  Refer to the 
printer’s user guide for more information.

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In the printer driver, select the highest print quality mode.

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Use images that are 150 dpi or higher. 

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In the printer driver, check if the TekColor Correction is set to Black and White; if it 
is, choose a different color correction.

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Make sure that you are using the correct PPD file with the latest Apple 
LaserWriter printer driver (version 8.3.4 or higher), that supports color 
PostScript.  

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In the Print dialog box, make sure that Color/Grayscale is selected. Some 
applications require special files to print in color.  Make sure that these files are 
properly installed.  For information, refer to the topics on the printer’s CD-ROM 
or the Tektronix World Wide Web site.