HP Designjet 510 Printer series - Manual (Page 78)

Incomplete lines
When you look at the image you have printed there are:
•
Missing or faint lines.
• Printed characters with missing parts.
The following is an example of what you might see if you have problems with incomplete lines.
See the Troubleshooting procedure for instructions on how to solve this problem.
Missing parts of text; this
should say TEST
TEST