2. The front panel offers a selection of prints. Use the arrow keys to make the selection and press the OK
key to start printing the required Diagnostic Print.
3. Make sure paper is loaded and that the Ink System is correctly installed. Press the OK key to print the
Diagnostic Print or press Cancel to exit without printing the Diagnostic Print.
4. The selected Diagnostic Print is printed.
Diagnostic Part 1: Printhead Problems
The Nozzle print test is designed to check if the Printhead nozzles print correctly. The Image Quality Service
Best should always be used to print this plot.
The nozzles check (bottom of the plot) is printed in a one-pass full swath mode. The diagnostics test prints
out every single nozzle of each Printhead without applying an error hiding or alignment algorithm.
For each Printhead, you can see both the adjacent and the consecutive nozzles. For every Printhead there is a
different horizontal band that can be identified with the help of the template marked with the colors of the
Printhead used at the right of every band.
There are a series of numbered stepped diagonal lines. If one or more of the nozzles are malfunctioning or
mis-positioned, you will see that the stepped lines are broken or misdirected in one or more places.
This is an example of nozzles outs. You can see the broken or the skewed line, in this case marked in yellow
to help you to understand the issue. In the service plot there are no yellow marks.
144 Chapter 7 Print quality ENWW