HP 840c 3Using and Caring for Your Print Cartridges

3Using and Caring for Your Print Cartridges

Print Cartridge Status

Print Cartridge Status Light

The Print Cartridge Status Light flashes when one or both of your print cartridges are low on ink, improperly installed, or malfunctioning. It will also flash if you are trying to use the wrong print cartridge type.

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Replacing Print Cartridges

Note: When buying replacement print cartridges, check the part numbers carefully. The print cartridge numbers for the 840C, 842C, and 843C printers are:

Black HP No. [15] (equivalent to C6615 Series)

Tri-Color HP No. [17] (equivalent to C6625 Series)

Note: When a print cartridge runs out of ink, leave the empty cartridge in the cradle until you can replace it. The printer does not print with only one print cartridge in the cradle.