HP Deskjet 842c Printer - Manual (Page 62)

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Cleaning the print cartridges
Cleaning your print cartridges can improve the quality of
printing.
If your printed page is missing lines or dots, perform Procedure
1 below. If your printed page contains streaked ink, perform
Procedure 2.
Procedure 1: Correcting missing lines
or dots
Clean the print cartridges when you notice that the
lines or dots are missing from your printed text
and graphics, as shown here. The print cartridges
can be cleaned from the HP Toolbox.
To clean the print cartridges from the HP Toolbox:
1 Open the HP DeskJet Toolbox . See “The HP DeskJet
Toolbox” on page 58 for instructions on how to find it.
2 Click the Printer Services tab.
3 Click Clean the Print Cartridges and follow the directions
on the screen.
If print quality improves by going through this sequence once,
but the quality is still not quite good enough, repeat the
procedure. Click the
Clean Again button on the last cleaning
screen.
If the preceding procedure does not improve the print quality,
your print cartridges might be low on ink. Replace the print
cartridges (see page 59). If problems persist, continue with
Procedure 2.
Note: Do not clean the print cartridges unnecessarily, as
this wastes ink and shortens the life of the print cartridge.