Technical information

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Based on your response it sounds like the ink cartridge is clogged and will need to be recovered; please
follow these steps: http://inkjet411.com/?page_id=1519
1) Gently blot the cartridge Nozzle Plate with a damp lint-free towel/wipe – a small amount of ink should
be dispensed, and be visible, on the towel (all 3 colors should be present for a Tri -color cartridge).
2) If no ink is dispersed from nozzle plate (i.e. visible on towel) or ink cartridge completely fails to print
on paper after installed in printer, then more drastic cartridge and printer cleaning steps will likely need
to be performed to recover ink cartridge (NOTE: foam inside cartridge can dry out and become very hard
– it must be moist to function correctly.
3) Immerse cartridge base (lower ¼ inch) in very hot, near boiling, distilled or de -ionized water for ~3-4
minutes (CAUTION!). Remove and blot cartridge nozzle plate to see if any ink is drawn out. If not repeat
this step until some ink is dispensed and visible. Thoroughly dry ink cartridge surface with towel before
reinstalling into printer. Refer to video here: http://inkjet411.com/?page_id=1519
4) Ensure flexible cable contacts are thoroughly clean inside the printer. Clean printer carriage flexible
cable contacts using isopropyl alcohol (99%) on damp cloth (or cotton swab). Remove all ink residue.
IMPORTANT: Ensure NO fibers remain on contact surfaces.
Ensure cartridge and flexible cable contacts are thoroughly dry before re-installing ink cartridges into
printer (suggested to wait up to 10 minutes).
To help rule out any other variables, please select “Solve My Problem” at the Inkjet411 website:
http://www.inkjet411.com/
For any additional questions please contact us directly: [e-mail]
-Thank you
HP DESKJET ERROR MESSAGES - NOT RECOGNIZING CARTRIDGE (15, 17, 23, 78)
Regarding your recent inquiry about the HP15 cartridge error message (.....'flashing "ink low" light and
the printer will not print'), it sounds like your cartridge’s internal micro-electronics have electrically
failed and will need to be replaced. These ink cartridges are extremely robust (compared to many of the
newer versions found in market today) and can typically be refilled 5+ times, on average, before
suffering a hard internal electronic failure. To verify the electrical health of the ink cartridge, please
perform the diagnostic checks below or refer to our HP printer diagnostics document:
http://inkjet411.com/?page_id=1813
In some cases the ink cartridges just need to be FIRMLY re-seated into the carriage assembly (also check
the cartridge restraining mechanism/arms if present – sometimes these mechanical restraints/arms
become loose over time…please double-check these if applicable). We also suggest that you ensure the