Owner`s manual

The labels issued from the

FEED

key have a special “checkered”

pattern printed on them. This pattern is there to let you know the

status of the thermal print head (TPH.)

A good checkered pattern:

This is a good pattern; you

can see that the pattern is

uniform and has no missing or

faded black squares. Also,

the top and bottom edges of

the pattern are parallel to the

label edges.

Needs cleaning:

This pattern indicates that the

TPH may need cleaning. The

white “spot” inside the pattern

may sometimes also have

parts of the pattern inside the

spot and the spot may not

always appear on every label.

Also may appear faded.

May need service:

There are two problems

depicted here: the leftmost

trouble spot is a very thin line

of “missing” pattern; the right-

most trouble spot is a more

pronounced missing line.

Both will appear completely

from top to bottom.

You can try cleaning the TPH, but this is most likely a scratched TPH.