Question about HP DesignJet 450c InkJet Printer

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Plotter only printing in Cyan

My plotter is a DesignJet 450c. Up until recently it worked well. The last couple of prints have pinted in light blue. The files are in PDF format. They are supposed to print in all black.

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Check your black cartridge. Do the pump the cartridge thing with the plunger on the left of the plotter. Check all the electrical connectors on the cariage and the cartridge - clean with water -or wd40 if you are very careful and check that all the contacts, about 40 of them are clean and undamaged on each cartridge. Replace with known working cartridges. run a color test as specified in the manual -- hp has relased the manual for this printer as they no longer service this unit.

Posted on Aug 06, 2008

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