Question about HP Officejet Pro L7590 All-in-One InkJet Printer

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HP L7590...cannot locate printhead latch...help

Trying to replace faulty printhead and there is no latch from as far as I can see. Please, before I break something by pulling too hard

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  • janefanderso Jan 20, 2009

    How do you replace the printheads? Is this going to be another expensive part that needs constant replacement?

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Magenta and cyan will not print on my hp officejet pro L7590 -- it started with a paper jam that was corrected - ever since then only the yellow and black will print on the paper -- printheads are good and...


Same thing happened to my printer hp L7590. Printed diagnostic, only black and yellow printed; diagnostic for printhead health Ky=good, MC= good. Only Hp products ever used. Uplugged, & discharged static, cleaned copper parts of printhead. Still no fix. On visual examination of floor of printhead compartment rectangular pad ( approx 1/4" by 1/2") is missing. I can only guess that during the paper jam, somehow the pad got caught up and went awol. Not sure what to do now.

May 26, 2010 | HP Printers & Copiers

1 Answer

My office jet L7590 printer suddenly quit on me. It keeps playing a message that says the printhead has a problem


Did you let one of your inks run dry? If so, you need to replace the effected printhead. This model has two, one for black and yellow, and a second for cyan and magenta. If you let the yellow run dry but have tons of black, it still effects the black/yellow printhead. Same with the other, either color going dry makes its printhead go bad. Either printhead will set you back about $75. Easy to remove and replace once you get the new printhead.

Bottom line with this model of printer...DON'T let you inks run dry. A new ink cartridge is $20 vs. $75 for a new printhead.

FYI - This is the most common mistake/problem with this printer. The Inkheads are built to last at least 40,000 prints. That's several years for most of us, that is unless you let the inks run dry.

Feb 09, 2010 | HP Officejet Pro L7590 All-in-One InkJet...

2 Answers

Officejet Pro L7590 printhead message (printheads only 2m. old)!


Pull out the printhead from the computer and check the date under "warranty ends" If the warranty period did not lapse, call HP technical support and tell them about the problem. They will replace the printhead for free. I have gone through 3 black/yellow printheads and I received the replacement printheads via FedEx within 1-2 days. They will send you a pre-paid envelope to return via U.S. Postal Service via US Postal Service.

If the Warranty date on the printhead expired, then you may have to come out of pocket to replace the printhead since HP will argue that they are not obligated to replace the printhead since the manufacturer warranty lapsed.

If this is the case, check to see when you purchased the printer. If the purchase was within a year, the retailer (i.e. Best Buy) is on the hook since there is a 1 year implied warranty on products such as printers, regardless of whether the expiration date on the HP printhead expired.

Hope this helps

Aug 05, 2009 | HP Officejet Pro L7590 All-in-One InkJet...

1 Answer

HP L7590 black ink printing poorly even with new HP cartridge


I have had the same problem It is the print head not the cartridge If your printer is still under warranty have the printhead(s) replaced if not Open the unit where the print heads are and hold the OK button for 5 seconds. The Print head carriage will move to the left

Carefully remove the KY (Black & Yellow) Print head with a cotton swab and alcohol clean the contacts and replace the printhead. If this does not work remove the printhead and then with a spray bottle spray the nozzle area on the bottom (DO NOT TOUCH THE NOZZLES AS THEY WILL BE DESTROYED) HP techs have told me this will void any warranty so act accordingly I use a printhead cleaning solution available from most any online ink supplier

Replace the printhead after it has dried out (less than a minute). The printer will then go through an alignment cycle and should print I had to do this several times before the print head performed as it should

Apr 10, 2009 | HP Officejet Pro L7590 All-in-One InkJet...

1 Answer

Won't print red Hp officejet Pro L7590 I've changed the red cart. but not the printhead.


Have you been using non-OEM (ie: from anyone other than HP) cartridges?, refillables, etc... before now?

If so, do they have the black rubber bulb in the base of the Magenta (red) cartridge?

If not that will be your problem.. The printer relies on this bulb to pump the ink into the printhead and also to detect when the cartridge is out of ink. Without it, it can pump air into the printhead and burn it out.


It's also possible that the feeding system in the printer is damaged and leaking slightly. If that's the case you would need to return the printer for warranty replacement (if it's in warranty) or take it to a service center (it's not user repairable).

If you are out of warranty and the service center is the only option I would decide where it's worth trying a new printhead. It may simply be the printhead is duff in which case you may be able to request a warranty replacement for that (if it's in warranty).

Hope that helps...


Feb 19, 2009 | HP Officejet Pro L7590 All-in-One InkJet...

1 Answer

Changing the printhead


FYI: The L7590 doesn't have any tape on either the cartridge or the printhead.

Right couple of things here...

1. The printheads in the L7590 are either K/Y (black/yellow) or C/M (cyan/magenta)... There's no single black printhead unless of course this is not an L7590 we're discussing here.

2. The cartridges ARE individual with K, Y M C (Black, Yellow, Magenta and Cyan).


It's likely that the printer has one of the following faults.
  • Chip contacts and/or chips on the cartridges are soiled and/or damaged. Try checking for ink on chips and contacts in the cartridge bay

  • The little white oval pump in the bottom of the cartridge bay has become disconnect or broken. This is used by the printer to pump ink into the printhead but it also detects pressure variations and has a logic circuit which declares low pressure as "no ink".

If the problem is the latter then you need to get the printer serviced and/or repaired at a service center.

If it's the former you should be able to fix it yourself.

If you're using non OEM (ie: not by HP) cartridges I'd recommend getting a new OEM/HP one to test before you go for a service as some cartridges are just poorly filled and/or designed.

Hope that helps.

Feb 03, 2009 | HP Officejet Pro L7590 All-in-One InkJet...

1 Answer

HP L7590 cannot locate printhead latch...don't think there is one


Ok...

The printheads are located in the internals of the printer. To get to them you need to gently lift the control panel up and you'll find this hinges up showing the inside of the printer.

You should then see on the printers LED that you can press and hold the OK button for 5 seconds to change the printheads. Do this until you see the printhead carriage moving out of the parking bay over towards the left.

IMPORTANT: Let the printhead carriage get over to the left and sit for at least 10 seconds before you do anything else as sometimes the printer opts to move the thing after a couple of seconds. Annoying but it can cause damage.. So wait a few.

Once the printhead is all the way over to the left, lift the blue plastic latch/cover from the front and this will reveal the two printheads.

You can now change and/or install your printheads before closing the blue plastic latch/cover and closing the printer lid.

Hope that helps.

Jan 11, 2009 | HP Officejet Pro L7590 All-in-One InkJet...

1 Answer

Trying to install a new black printhead and cannot locate printhead latch.


Please see the solution I posted for this earlier.

http://www.fixya.com/support/t1524475-hp_l7590_cannot_locate_printhead

Jan 11, 2009 | HP Officejet Pro L7590 All-in-One InkJet...

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