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    HP Officejetpro 8600 only prints black if only one color cart empty

    I have a new HP Officejetpro 8600 and refilled the second set of cartridges (I have found the starter set usually doesn't work when refilled) and the printer would not recognize that the cartridge has ink in it and would not print. I then purchased a new cartridge and it printed. Interesting...
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    HP OfficeJet Pro 8500A display problem

    I use an HP OfficeJet Pro 8500A and after it has not been used for 12 or so hours all the numbers etc. on the LED blink on/off and the display says to turn print of then on. Anyone know what the problem may be?
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