Compaq A3000 - Manual (Page 7)

Setup
Setup
5
Step 6: Align the cartridges
After installing the print cartridges and closing the cover, an alignment page will
be automatically printed. From each alignment group on the alignment page,
find the number under the alignment pattern that comes closest to forming a
straight line.
Using the same up, down and start/yes buttons used in step 4, change the value
for the letter displayed on the printer LCD, and then press start/yes to select it.
The next alignment letter will be shown until you have set all the alignment
values for the page.
Note: In this example for
alignment group A, 16
comes closest to forming
a straight line.