HP Deskjet 842c Printer - Manual (Page 59)

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Print cartridges
Each HP print cartridge is a self-contained, plug-in ink supply.
The printer operates with two print cartridges installed: one
black and one tri-color. The HP printers and print cartridges are
designed to work together to deliver outstanding print quality
for results that are always clear, always sharp.
Replacing print cartridges
To replace a print cartridge:
1 To access the print cartridge cradle, press the Power Button
to turn on the printer.
2 Open the top cover. The cradle moves to an accessible
position and the Print Cartridge
light flashes.
3 Raise the cradle latch.
4 Lift the cartridge out of the cradle and discard it.
Keep new and used print cartridges out of the
reach of children.
Note: When buying replacement print cartridges, check
the part numbers carefully so that you buy the correct
cartridges for your printer:
840C, 842C, and 843C require:
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 cannot print with only one print cartridge
installed.
Warning