HP Deskjet 840/842/843c HP DeskJet 840C Series - (English) Windows Connect Use - Page 62

Cleaning the print cartridges, Procedure 1: Correcting missing lines, or dots

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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. Note: Do not clean the print cartridges unnecessarily, as this wastes ink and shortens the life of the print cartridge. 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. 62

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62
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.