Technical information

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residue is present on surface of the chip. Refer to page 7 of the FAQs (Frequently Asked Questions)
document at either of the links provided below:
http://inkjet411.com/?page_id=1991
http://inkjet411.retailinkjet.com/wp-content/uploads/2013/05/HP-932-933-950-951-Spare-Cartridge-
Swap_FAQs_v4.pdf
Following cartridge 'smart chip' cleaning, please reinstall the ink cartridge and retest.
NOTE: Attempting to refill ink cartridges before the 'ink out/empty' alert condition hits will actually work
one time. Since the printer monitors ink usage/drop counts, it will display the ‘Ink Sensor Warning’
messages when it 'predicts' the cartridge should be out of ink, but these messages may be ignored and
you can continue printing. Eventually the ‘Cartridge(s) Depleted’ alert message will be displayed when
the cartridge truly is out of ink. After this the printer will not know what the level of the ink is. Watch
this video which shows both of these alert messages: http://inkjet411.com/?page_id=1999
For any additional questions please contact us directly: [e-mail]
-Thank you
HP 932/933 & 950/951: “Use Color Ink Only” (not linked yet)
Regarding your recent inquiry about the HP950XL black ink cartridge “Use Color Ink Only” printer alert
message, it sounds like the printer is not recognizing the installation of the recently refilled 950XL black
ink cartridge or you refilled the ink cartridge before it was actually out of ink and now the printer is
ignoring the refilled ink cartridge since it now 'predicts' that the cartridge should be out of ink (when this
occurs you will typically observe an "Ink Low Sensor Warning").
Let’s ensure that all steps have been completed properly when using refilled ink tanks. First and
foremost, please understand that in order to use a refilled ink cartridge you need to first install another
HP950 (or 950XL) black ink cartridge in the printer for approx. 25 seconds (i.e. i.e. spare set must be
available when using refilled ink cartridges), then you can install the newly refilled cartridge and it will
be recognized by the printer. You can then bypass the various 'non-HP', 'counterfeit' alert messages -
eventually you should be permitted to print using the black ink cartridge.
It is suggested you remove the respective ink cartridge from the printer and thoroughly clean the
cartridge’s smart chip electrical surface using an isopropyl dampened lint-free towel. Ensure no ink
residue is present on surface of the chip. Refer to page 7 of the FAQs (Frequently Asked Questions)
document at either of the links provided below:
http://inkjet411.com/?page_id=1991