HP 7740: Can't print in black when one of the OTHER cartridges is out of ink. Error message is: cartridge depleted. I don't print in color, so don't need the other cartridges. So even thought I don't use color the machine won't let me print without it. What's the OTHER solution?
The printer is not designed to print with only black ink.
Solution: Purchase / provide ink cartridges for both color and black ink.
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