Oce Arizona 550 GT User Manual page 220

Printhead Maintenance
Note:
This is an extreme example to illustrate the problem. In most cases you will likely see
only two or three nozzles out.
[166] Nozzle Check Print Magenta Section
How to Correct Nozzle Dropouts
If there are only a few nozzle dropouts per printhead try suctioning the affected printheads
1.
again without purging. If many nozzles are out, perform Printhead Maintenance again.
Print another nozzle check and repeat step 1.
2.
If nozzle dropouts still remain, swab that printhead.
3.
Result
When a printhead does not have any dropouts, it will look like the Nozzle Check print
of the black (K) section illustrated below.
Note:
There is an indication of some poor directionality in one of the nozzles illustrated in the
top left section of the sample below, but it will not affect image quality (although it
could, if multiple adjacent nozzles show this problem).
[167] Nozzle Check Print Black Section
220 Chapter 11 - Printer Maintenance