This topic gives the description about Ink Alert or Low on Ink Message of printer.
You can check the status of your ink cartridges (how much ink is remaining, for example) at any time.
To view the ink levels of your ink cartridges, touch the Dashboard status on the front panel and touch the ink icon . Then touch the desired ink level for more information.
You can also get this information from the HP Utility:
In the HP DesignJet Utility for Windows, go to the Supplies tab to see each cartridge's status.
In the HP Utility for Mac OS X, select Supplies Status in the Information group.
For an explanation of the ink cartridge status messages, see Ink cartridge status messages.
if you touch Replace Inks, the printer will give you step-by-step instructions to replace the ink cartridges. See Replace an ink cartridge for more information.
With the help of the printer, you can check the status of your ink cartridges at any time.
For steps on how to check the status of ink cartridges, see Check ink cartridge status.
These are the possible ink cartridge status messages:
OK: The cartridge is working normally, with no known problems.
Missing or Damaged: There is no cartridge present, or it is not correctly connected to the printer (shown with an X on the status screen). See Replace an ink cartridge.
Low: The ink level is low. See Replace an ink cartridge.
Out of ink: The cartridge is empty. See Replace an ink cartridge.
Non-HP ink cartridges installed: The cartridge is not a genuine HP cartridge.
Incompatible: The cartridge is incompatible with this printer.
There are two occasions when you need to replace an ink cartridge.
The ink cartridge is very low and you want to replace it with a full cartridge for unattended printing (you can use up the remaining ink in the first cartridge at a more convenient time).
The ink cartridge is empty or faulty, and you must replace it to continue printing.
Do not try to remove an ink cartridge while printing.
Remove an ink cartridge only if you are ready to insert another one.
Make sure the printer is turned on.
Open the ink cartridge cover on the rear right-hand side of the printer.
Remove the ink cartridge.
Insert the new ink cartridge. Make sure that you insert the ink cartridge into the slot that has the same colored letter as the cartridge you are installing.
Close the ink cartridge cover.