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the HP C9351a (No21) - C9352a (No22) - c6656a (No 56) - C8727
(No 27) blacks - c6657a (No 57) - C8728 colour & C6658
Photo ink cartridges:-
TO RESET HP INK CARTRIDGES ARE DESCRIBED BELOW
Refill your Hewlett Packard ink cartridge using your Proprint
supplied ink refill kit.
we explain how to reset the ink level gauge after refilling
your HP 56 (c6656a) black and HP 57 (c6657a) colour inkjet
cartridges! Also works on HP No 21 , 22, 27, 28 and 58.
To reset the HP 56 black ink cartridge or HP 57 colour ink cartridge,
first tape over the contact pointed to by the arrow in the diagram
on the left.
Install the ink cartridge back into your HP printer with the
first contact covered with tape. See below for illustration
of contacts. (One of the little gold-coloured squares is called
The printer will tell you that there is a problem with the
ink cartridge. Click "ok". The printer will
then start to print an alignment page. Let the printer
print the alignment page.
Remove the inkjet cartridge from the printer again.
Leave the first piece of tape on the contact first covered.
Cover the second contact shown in the picture on the lower
left for the black ink cartridge or the contact in the picture
on the lower right for the colour cartridge. The second
contact on the HP c6656a black cartridge to be covered is
the top square on the next to last row from the left.
The second contact to cover on the HP c6657a inkjet cartridge
is the top square on the last row from the left.
6. Install the printer
ink cartridge again. This time with both contacts being
covered with tape.
The printer will go through the same process as before, telling
you there is a problem with the printer ink cartridge.
Again, click "ok". The printer will start
to print an alignment sheet. Again, let the printer
finish the alignment page.
Remove the cartridge once more from the printer. Remove
both pieces of tape used to cover the contacts.
Make sure that
there isn't any residue left from the tape on the contacts.
If you do see residue, gently clean the contact with
Install the cartridge on final time into your HP printer.
The cartridge will now be read as new and full of ink.
Green square = first contact to
Blue square = second contact to cover
Green square = first contact to
Pink square = second contact to cover
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inkjet cartridges for Brother Xerox ink Printer ink Cartridges and Inkjet
computer off, remove the cartridge from the printer and cover contact #1
with tape. Start up computer and printer should automatically print a
2. Take out inkjet cartridge
and cover contact #2 with tape. Reinstall ink cartridge. Printer
will make a little noise.
Take out cartridge
and cover contacts #3 & #4 with tape. Reinstall cartridge.
(Printer will make a lot of noise. If you check ink levels now with HP
inkjet utility, you will be given a notice that printer is busy printing.
Open printer lid
and wait for cartridge to return to center. Remove cartridge.
Remove tape from Contacts #1, #2, #3, and #4. Reinstall cartridge.
(If you check ink levels now, you will be given a notice that printer is busy
6. Turn printer off and then on again. Check ink levels
they should now register 100% full. Printer should be ready to use.
METHOD 3 - Three Cartridge
On some models the above procedure won't
work, and you'll have to fool the printer by keeping three cartridges on
hand (these cartridges can be old, empty cartridges). This works
because the printer only remembers the last TWO cartridges which were in it.
The procedure is as follows:
Cart #1 (empty) is removed for
Cart #2 is installed
Cart #2 is removed
Cart #3 is installed
Cart #3 is removed
Cart #1 (refilled) is installed.
The printer now thinks that the filled cart is new.
ANOTHER METHOD? - METHOD 4 - One of our
customers used the procedure listed above to reset the ink levels on the
cartridges HP 56 & 57 in an HP Photosmart 7260. this worked fine for the
color #57 but he could not get the Blk #56 to reset using the procedures
listed above, however he got it to reset by applying tape per step 1,
reinstall, power down printer, power up printer.
Add tape per step 2, power down printer, power up printer.
Remove tape applied in step 1, reinstall, power down printer, power up
Remove tape applied in step 2, power down printer, power up printer.
At this point going to Start, Settings, Printers, HP 7260, Properties,
services, service this device, select the "Estimated ink level" which showed
a full ink level.
At no time in the process for either cartridge did the printer
/ software indicate that there was a problem with the cartridge
and want to run an alignment, which is why he substituted a
Another possible method
I heard of which might work on HP Lexmark and Dell is to remove both
cartridges from the printer, Power the printer on / off at wall supply about
6 times - leave 30 seconds or so between each power on / off to the printer.
The idea here is that the printer without ink cartridges in has no cartridge "To
memorize" and that at the end of the procedure any inkjet cartridge introduced is
treated as a "New ink cartridge" - No confirmation yet that this method is
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