Question about HP DesignJet 450c InkJet Printer
Make sure you have the correct cartridges in the correct slots.
Hopefully you haven't damaged the contacts on any of the cartridges.
Try removing each cart, check the contacts for debris or damage, and gently reinstall them.
This has been my problem in the past, perhaps yours as well.
Posted on Feb 16, 2010
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Posted on Jan 02, 2017
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