HP Deskjet 990cxi Printer - Manual (Page 41)

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Print Cartridges: Cleaning Print Cartridges
4 Dip a clean cotton swab into distilled water and squeeze any
excess water from the swab.
5 Clean the face and edges of the print cartridge as shown. Do
NOT wipe the nozzle plate.
6 Inspect the cartridge for fibers on the face and edges. If fibers are
still present, repeat the cleaning process.
7 Repeat the cleaning process for the other print cartridge.
Once you’ve removed the print cartridges, make sure
that they are not outside of the print cartridge cradle
longer than 30 minutes.
Manually Cleaning the Print Cartridge Cradle
1 Using clean, moistened swabs, wipe the underside of each wall of
the cradle.
2 Repeat until no ink residue is seen on a clean swab.
3 Reinsert the print cartridges, then close the printer’s top cover.
4 Load white paper into the IN tray.
5 Reinsert the electrical power cord into the back of the printer.
6 Print a test page. Double-click the hp deskjet Utility icon in the
Utilities folder on your hard drive’s main directory, click the Test
tab, then click the Test button.
Note: If streaking still appears, repeat the procedure until the test
printout is clean. You will find additional maintenance tips at:
http://www.hp.com/go/support
Do NOT clean
nozzle plate
Clean
Caution
Cradle wall