HP Designjet 4000 Printer series - Manual (Page 178)

How do I respond to the Image Diagnostics Print?
The Image Diagnostics Print is in three numbered parts.
1.
Part 1 tests printhead alignment. See “How do I interpret Image Diagnostics part
1?” on page 176.
2. Part 2 tests printhead performance and the paper advance mechanism. See
“How do I interpret Image Diagnostics part 2?” on page 178.
3. If Part 2 has revealed a printhead problem, Part 3 identifies which of the eight
printheads is responsible for it. See “How do I interpret Image Diagnostics part
3?” on page 180.
If Part 2 has not revealed any problem, you can and should ignore Part 3.
How do I interpret Image Diagnostics part 1?
The purpose of part 1 is to identify color-to-color alignment and bidirectional alignment
problems.
If you have horizontal misalignment, you will see something like this:
Chapter 11
176
How
do
I use
the
Image
Diagnostics
Print?