Figure 7-45 Black print-quality troubleshooting page
1
3
2
1. Grids The grids are in inches and millimeters. They are label with
letters and numbers so that defects can be described by
position and by distance between repeats.
2. Color plane registration (CPR) bars After printing, the box with no extra color in each area on each
page shows how far off the CPR of that color is. Each page
has two process direction areas and three scan direction areas
that are labeled x and y and 1–11. The page should be fed by
the long edge. Each square from the center equals 42 microns.
3. Color ramp patches Used to detect offset for the OPC or developer in the image
drum or offset in the fuser.
NOTE: To get further assistance in print quality troubleshooting, go to www.hp.com/support/
cljcp3525 and select PQ Troubleshooting Tools.
Diagnostics page
Use the diagnostics page to evaluate problems with color plane registration, EP parameters, and print
quality.
1.
Press the Menu
button.
2. Press the down arrow
to highlight DIAGNOSTICS, and then press the OK button.
3. Press the down arrow
to highlight PRINT DIAGNOSTICS PAGE, and then press the OK button
to print the page.
362 Chapter 7 Solve problems ENWW
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