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6-14 Image Quality
HP DesignJet CP Series Printers
Nozzles Problem 1: Some printhead nozzles, in any one color, are not
printing.
Nozzles Problem 2: Printhead nozzles are misdirected in any one
color.
Corrective Action: Try the following steps:
1 From the Image Quality/ Printhead service /
Printhead check Menu, set to Now to run the
printhead check.
2 From the Utilities / Service tests menu, select
“Recover printheads” to run the printhead
recovery process.
3 Print the Image Quality Print again to see if
there has been any improvement.
4 If there has been no improvement, try
reinstalling the Ink System Components and
print the Image Quality Print again.
5 If the error is still present, replace the Ink
System Components and print the Image
Quality Print again.
6 If the error continues try the following:
D Perform the Electronics Test ' page 4-7.
D Replace the Trailing Cable ' page 8-36.
D Replace the Carriage Assembly ' page 8-42.
Test Pattern 4: Color Alignment Quality Test
This test pattern is to check the color alignment, and produces 6 patterns
each with 2 different primary colors. In each pattern you will see primary
color circles. If there is misalignment between the primary colors the
composite color will be present in one part of the circle and white will be
visible at the opposite side of the circle.
There are two types of misalignment (see Example D):
D Horizontal – when the misalignment is in the horizontal axis.
D Vertical – when the misalignment is in the vertical axis.