3D Systems ProJet 4500 Installation Manual page 32

5. Problems with a particular color channel may be resolved by running
STRIPE TEST => CHECKER a few times. If problems persist then a
small print job consisting of this color should be run once Core material
has been loaded.
6. If problem persists, run REVIVE HEADS under the Utilities menu.
If the problem continues, then a small print job consisting of this color
should be run once core material has been loaded.
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