You can perform the Tap
41 Cartridge Health Diagnostics Test: [applies to HP Deskjet 6800/6900/9800]
http://inkjet411.com/?page_id=1741
(refer to 2nd video to understand how to read the printed pattern)
1.
With printer power on, press and hold the POWER button.
2.
Press the Cancel (X) button four (4) times.
3.
Press the RESUME button (Down Arrow) once.
4.
Release the POWER button.
5.
The Diagnostic Test Report should print.
--- A good
HP 93/95/97/99 color cartridge should display 600 good nozzles, while a good HP
92/94/96/98 black ink cartridge should show 672 good nozzles. If the results yield
anything different then the ink cartridge is likely damaged and will need to be
replaced. Refer to 2nd video on how to read the printout: http://inkjet411.com/?page_id=1741
---- If the
printer attempts to print the diagnostic test pattern (1 page) then the printer
is generally considered operational and functional, if nothing is printed, but
the printer attempts to print the pattern, then the tri-color ink cartridge is
either empty, clogged or severely electrically damaged (black ink cartridge is
not used). You can remove the tri-color cartridge, reactivate the tap 41 test
and the printer will print the diagnostic test print in black ink (special
"ink back-up mode").
For information
on North American ink refill services at a major retailer near you (should you
wish to save ~50% on ink costs), general printing problem resolutions or advanced
HP printer diagnosis procedures (advanced cartridge diagnostic tests/cartridge error
bypass & printer reset methods, etc.), please visit Inkjet411: http://www.inkjet411.com
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