HP Designjet 4500 Series - Quick Reference Guide

Corrective action
1. Check that you are using appropriate print quality settings. See Choose print quality settings.
2. If you are using low-quality paper, try better-quality paper. The performance of your printer can be
guaranteed only if you use recommended papers. See Using your printer on CD.
3. Perform paper advance calibration with the same paper type that you intend to use for the final
print. See
How do I... (paper advance calibration topics).
4. If there is no improvement in print quality, contact your customer service representative.
Interpret Image Diagnostics part 3
If part 2 has revealed a printhead problem, the purpose of part 3 is to identify which particular printhead
is faulty. Each rectangle in this plot is labelled with the number of the printhead that produced it.
Here are three examples of a black rectangle in close-up, showing the fine lines of which it is made:
In the first two examples above, there are so many missing lines that the printhead may be faulty. In the
third case there are only a few missing lines, which are acceptable, because the printer can compensate
for such minor problems.
96 Chapter 9 How do I... (Image Diagnostics Print topics) ENWW
How do I... (Image Diagnostics
Print topics)