HP 400 - Manual (Page 93)

5-30 Problem Resolution
Color fades on
transparencies It is possible that the transparencies are being exposed to ultraviolet light, typically from the
sun. Check other instruments and machinery near the printer to see that they do not create
ultraviolet light. Be sure to protect transparencies from direct or reflected rays of the sun or
other sources of ultraviolet. After the transparency is dry, you can cover it with a sheet of
paper.
Printouts have black
output where you
expected color 1. Verify that the black print cartridge is not installed. If it is, replace it with the color print
cartridge and print the page.
2. If using Windows, verify that you have not selected Black Text or Grayscale print modes in
the Printer Setup dialog box. If you have selected Automatic, be sure you have not selected
“Print in Grayscale”, located immediately below the Manual button, in the Printer Setup
dialog box.
Characters, dots or lines
are incomplete or missing
from printouts Missing dots when printing color can be caused by the same problems that cause missing dots
when printing black. These problems may be with any of the following:
• print cartridge
• printer hardware
• connection between the printer and the print cartridge.
See “Printouts Missing Rows of Dots” in this chapter for solutions.
If you are printing color from a Windows application:
• Select Presentation mode in the Printer Setup dialog box.
• Print the page again using manual feed.
Table 5-12. Solving Color Print Quality Problems (Continued)
Color Print Quality Issue Possible Cause