HP Color LaserJet 4730 Multifunction Printer series - Manual (Page 325)

● 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
The MFP is operating in excessively humid or dry conditions. Verify that the printing environment is
within specifications. See
Environmental specifications .
Print quality problems associated with jams
● Make sure that all media is cleared from the paper path. See Paper jam recovery .
● The MFP recently jammed. Print two to three pages to clean the MFP.
● The media does not pass through the fuser causing image defects to appear on subsequent
documents. Print two to three pages to clean the MFP. However, if the problem persists see the
next section.
Print quality troubleshooting pages
The print quality troubleshooting pages provide information on aspects of the MFP that affect print
quality.
1. Press Menu to enter the MENUS.
2. Touch DIAGNOSTICS .
3. Touch PQ TROUBLESHOOTING .
The message Printing... PQ troubleshooting appears on the display until the MFP finishes printing
the print quality troubleshooting information. The MFP returns to the Ready state after printing the print
quality troubleshooting information.
The print quality troubleshooting information includes one page for each color (black, magenta, cyan,
and yellow), MFP 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/clj4730mfp .
Print quality troubleshooting tool
The print quality troubleshooting tool helps you identify and troubleshoot print quality issues for the
HP Color LaserJet 4730 MFP. The tool includes solutions for many print quality issues, using standard
images to provide a common diagnostic environment. It is designed to provide intuitive, step-by-step
directions for printing troubleshooting pages that are used to isolate print quality problems and provide
possible solutions.
To find the print quality troubleshooting tool, go to the following quick URL: http://www.hp.com/go/
printquality/clj4730
Image defect examples
This section contains two tables: one table shows examples of common print-quality problems, and the
other table shows examples of common copy-quality problems that can occur when using the automatic
ENWW Correcting print quality and copy quality problems 305