HP Deskjet 842c Printer - Manual (Page 64)

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Steps to manually clean your print cartridges and print
cartridge cradle:
1 Remove the print cartridges
a. Turn the printer on and lift the printer’s top cover.
b. The print cartridge cradle moves to the center of the
printer.
c. After the cradle has moved to the center of the printer,
unplug the black power cord from the back of the printer.
d. Remove the print cartridges and place them on their sides
on a scrap piece of paper.
Keep new and used print cartridges out of the
reach of children.
Once you’ve removed the print cartridges, make
sure that they are not outside of the printer for
more than 30 minutes.
Warning
Caution
Note: Be careful not to touch the ink nozzles or the
copper contacts. Touching these parts of the print
cartridge can result in clogs, ink failure, or bad electrical
connections.