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● Handle transparencies by the edges. Skin oil on the surface of transparencies can cause
spots and smudges.
● Small, random dark areas on the trailing edge of solid fill pages may be caused by
transparencies sticking together in the output bin. Try printing the job in smaller batches.
● The selected colors are undesirable when printed. Select different colors in the software
application or printer driver.
● If you are using a reflective overhead projector, use a standard overhead projector
instead.
Print quality problems associated with the environment
Print quality problems can occur if the printer is operating in an environment outside of the
printer specifications (see
Printer specifications).
Print quality problems associated with jams
Make sure that all paper is cleared from the paper path. See Paper jam recovery.
● If the printer recently jammed, print two to three pages to clean the printer.
● If the paper does not pass through the fuser, which causes image defects to appear on
subsequent documents, print two to three pages to clean the printer. However, if the
problem persists see the next section.
Print quality problems associated with maintenance
Some print quality problems might occur when the printer needs cleaning. See Periodic
cleaning for more information.
Print quality troubleshooting pages
The print quality troubleshooting pages provide information on aspects of the printer that
affect print quality.
1. Press M
ENU
to enter the MENUS.
2. Press
to highlight DIAGNOSTICS.
3. Press
to select DIAGNOSTICS.
4. Press
to highlight PQ TROUBLESHOOTING.
5. Press
to select PQ TROUBLESHOOTING.
The message Printing... PQ troubleshooting appears on the display until the printer
finishes printing the print quality troubleshooting information. The printer returns to the
Ready state after printing the print quality troubleshooting information.
The print quality troubleshooting information includes one page for each color (cyan,
magenta, yellow, and black), printer statistics related to print quality, instructions on
interpreting the information, and procedures to solve print quality problems.
If following the procedures recommended by the print quality troubleshooting pages do not
improve print quality, go to http://www.hp.com/support/clj5550.
ENWW Print quality troubleshooting 231