HP (Hewlett-Packard) 940c All in One Printer User Manual


 
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checking the print cartridge status
Open the printer’s top cover when the Print Cartridge Status light flashes. The
yellow arrow on the print cartridge cradle points to one of five Print Cartridge
Status icons revealing the exact nature of the problem.
1. tri-color cartridge problem icon 2. black cartridge problem icon
3. tri-color cartridge low-ink icon 4. black cartridge low-ink icon
5. cartridges OK icon 6. yellow indicator arrow