Tektronix 740L manual Printed colors are not what you expected contd

4 Troubleshooting

Printed colors are not what you expected (cont'd.)

SymptomSolution

Image is very faded or pieces of the image are missing; toner on the page is loose.

When using the Multi-Purpose Tray, make sure that you have selected the correct media type in the printer’s front panel menu.

Photographic images appear	Check the front panel’s Print Quality menu. If the selected mode is
grainy	Presentation, change it to Standard.
	The Presentation print-quality selection in the front panel substitutes Presentation
	mode rendering when Standard mode is selected in the driver.
Streaks or spots	Most spots are caused by fingerprints or dust introduced into the printer while installing
	the Imaging Unit or loading media.
	Make sure that the surface where you unpack the Imaging Unit, paper, and
	transparencies is free of dust. Keep supplies in a covered area or a closed box.
	Make sure that the Imaging Unit stays covered until immediately before installing it in the
	printer. Exposure to light for more than 90 seconds can damage the Imaging Unit.
	Do not touch the right side or underside of the Imaging Unit; fingerprints affect print
	quality.
	Make sure that the media is clean.
	Make sure that you handle the media on the outside edges to avoid fingerprints.
	To get rid of fingerprint spots, print a few prints (you can print any of the Help Pages in the
	front panel menu).
The back of the printed page	Toner particles have contaminated the transfer roller. This can happen if the printed
appears dirty.	image is larger than the media (for example, when printing on envelopes). Run
	10-20 prints to clean the transfer roller.
Black-and-white prints	In the front panel’s Printer Defaults menu, check the default setting for Print
instead of color	Mode. If it is set to Black Only, change the setting to Color.
	If your printer is a Phaser 740L printer (check the nameplate on the front of the printer), it
	will only print in black and white until you add color with the 740LCS Color Kit.
Black-and-white prints	Macintosh users
instead of color	Make sure that you are using the correct PPD file with the latest Apple LaserWriter
	printer driver (version 8.3.4 or higher), which supports color PostScript.
	Make sure that Color/Grayscale is selected in the Print dialog box. 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.
	Make sure that you have not selected Fast Monochrome or Premium Monochrome in
	the Print Quality dialog box.
	PC users
	Be sure to use a driver that supports color PostScript.
	If you are using Windows, make sure that the Color box in the Options dialog box is
	checked. For information on the drivers, refer to the printer’s CD-ROM or World Wide
	Web topics.
	Make sure that you have not selected Fast Monochrome or Premium Monochrome in
	the Tektronix Printer Features dialog box.
	If you are not using a driver, make sure that you have not set the monochrome mode
	selection code; make sure that the front panel is not set for Fast Monochrome or
	Premium Monochrome.
Blue colors look too purple	If printed blue colors look too purple, print your document with the Vivid Color color
	correction. Refer to page 118 for information on color corrections.

82Phaser 740 and 740L Laser Printers