Oce CS 5090 User Manual page 37

Within the printed test pattern, each jet is represented by a short horizontal
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line. Together, these short horizontal lines form a "stair step" pattern.
Electrically defective jets appear as solid bars for which you can compensate.
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Clogged jets appear as gaps or misdirected lines in the "stair step" pattern,
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which you clear manually.
The print modes for which compensation is available are shown above the
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test pattern.
In the above example, the prime test shows that there are three electrically
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defective jets and one clogged jet. The header indicates that you can
compensate for the electrically defective jets in the 4-pass mode. But you
must clear the clogged jet manually. See 'Clear clogged jets' on page 122 for
further information.
If all jets appear to be defective, reinstall the cartridges.
Note:
Getting started 37