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HP Deskjet 940c Printer support

Checking the Print Cartridge Status

  • PrintPrint

Understanding the print cartridge status light

The Print Cartridge Status light flashes when one or both of the print cartridges are low on ink, improperly installed, or malfunctioning. This light also flashes if the wrong print cartridge type is used. See Figure 1.
Figure 1: Print cartridge status lights
1 - Print Cartridge Status light
If the ink level is low in a print cartridge, the Print Cartridge Status light stops flashing when the printer’s top cover is opened. If the problem is not related to low ink, the light continues to flash after the cover is opened.


Open the printer’s top cover when the Print Cartridge Status light flashes. The yellow arrow on the print cartridge cradle points to one of five Print Cartridge Status icons revealing the exact nature of the problem. See Figure 2.
Figure 2: Print Cartridge Status Icons
1 - Tri-color cartridge problem icon
2 - Black cartridge problem icon
3 - Tri-color cartridge low-ink icon
4 - Black cartridge low-ink icon
5 - Cartridges OK icon
6 - Yellow indicator arrow

Troubleshooting problems with the tri-color or black print cartridge

If the yellow arrow points to a print cartridge problem icon, the print cartridge is either missing, improperly installed, defective, or is the wrong print cartridge for the printer. Perform the following tasks to correct the problem:
  • Insert the proper print cartridge if one is missing. The printer needs both a black print cartridge and a tri-color print cartridge to operate.
  • Remove and reinsert the print cartridge if both print cartridges are installed.
  • Verify that the correct print cartridge is installed if there is still a problem.
  • Replace the cartridges if the problem persists.

Solving problems with low ink

If the arrow points to the tri-color or the black low ink icon, replace the relevant print cartridge.

Verifying that the problem is solved

If the arrow points to the print cartridge OK icon, both print cartridges are operational and the problem is solved.