CAB A3, Operator'S Manual

Page: 82 / 144

82 cab Produkttechnik GmbH & Co KG
Printhead Profile
NOTICE !
The test option "Printhead profile" is available for A3 only !
When selecting the option "Printhead profile", a diagram will be printed which
shows the resistance values for the single printhead dots. This printout makes
it possible to see the status of the printhead.
When a dot is damaged or defective its resistance value increases. When this
error occurs, it causes white lines in the print image from top to bottom. In
some cases, the white line could cause an invalid scan of certain barcodes.
To print the printhead profile, load media (labels, continuous paper) and a
transfer ribbon (if applicable), which extends over the entire print width of the
printer.
NOTICE !
With "Printhead profile", the printer will not sense any label gaps, and will
print non-stop, producing output with an approximate length of 9" (230
mm) for a 203dpi printhead and 13" (340 mm) for a 300dpi printhead.
Continuous paper works best for the prints, otherwise, a regular sheet of
paper cut to a width of 4.7" (120 mm) can be used in thermal transfer
mode.
1. Switch from "Online" mode to the Offline Menu by pressing the key.
2. Press the key or the key until the "Test" menu is displayed. Press the
key to confirm the selection.
3. Select the option "Printhead profile" by pressing the key or the key
and confirm the selection by pressing the key.
4. Start the printout by pressing the key.
5. The "Printhead profile" will be printed with the heat level and print speed set
in the "Setup" menu.
6. To cancel the print, press the key.
7. After completing the printout the printer returns to the selection list of the
"Test" menu.
The printout has a scale which marks the actual geometric position of the dots.
The scale will be printed underneath the black bar with the text "Printhead
profile". It is possible to compare a single dot to the scale as demonstrated in
the following diagram.
Figure 9o indicates a print image failure around 22.5 mm in the black bar.
In the scale section of the diagram, a dot with an increased resistance value
appears around 22.5 mm. Using this comparison makes it clear that the image
fault on the top line is caused by a defective printhead and not a case of a dirty
printhead surface.
9. Test Options