Question about HP DesignJet 450c InkJet Printer
John I suspect that the cartridge light is flashing too. Raise the cover to service the print cartridges, remove one cartridge at a time and reinsert it. While doing that watch the ready light. It should blink 3 times even with the lid raised to acknowledge a good cartridge. If one by one all the cartridges give 3-flash ready lights then the problem may not be cartridges or they may not be primed.
Posted on Dec 06, 2010
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Posted on Jan 02, 2017
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