HP Deskjet 6840 Color Inkjet Printer - Manual (Page 134)

Cleaning instructions
1. Lightly moisten a cotton swab with distilled water and squeeze any excess
water from the swab.
2. Wipe the print cartridge copper contacts with the cotton swab.
Caution: Do not touch the print cartridge ink nozzles. Touching the ink
nozzles will result in clogs, ink failure, and bad electrical connections.
1. Clean only the copper contacts
Repeat this process until no ink residue or dust appears on the swab that you
use to clean the contacts.
3. Insert the print cartridges in the printer, and then close the printer cover.
10.6 Printing a test page
Follow these steps to print a test page:
1. Open the printer Toolbox .
2. Click the Print a Test Page button, and then follow the onscreen instructions.
10.7 View estimated ink levels
Follow these steps to view the estimated ink levels of the print cartridges that are
installed in the printer:
1. Open the printer Toolbox .
2. Click the Estimated Ink Level tab.
HP Deskjet 6800 series printer
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