Datamax PE - Manual (Page 33)

PE Series Operator’s Manual 23
3.8 Test Pattern Label
The second of the labels is the Test Pattern Label, see Figure 3-12.
This matrix is useful to determine the Printhead condition. For more
information concerning maintenance, see Section 6.
Good test label indicates
Printhead is operating
normally.
Streaks in test label indicate a
dirty or faulty Printhead.
(See Chapter 6 for cleaning
instructions).
Figure 3-12 Test Pattern Label