HP 940XL Yellow (C4909A) - Ink Support For Ednet

COMPATIBLE WITH

OfficeJet Pro 8000
OfficeJet Pro 8500
OfficeJet Pro 8500a

Troubleshooting - Click each question for details

The power light and the resume light blink, and one or more of the cartridge lights are on

One or more of the cartridges have expired.

Press and hold the Power button, and then press the Resume button three times. All of the lights (except for the Power light) will turn off, and then you can continue printing.

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The power light blinks, and one or more of the cartridge lights are on

A cartridge is out of ink and must be replaced before continuing to print.

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The power light blinks, and one or more of the cartridges lights blink

One or more of the cartridges are faulty and need your attention.

First, remove the cartridge and gently wipe the chip with some tissue. Reinstall the cartridge into your printer. If this does not resolve your issue then the cartridge needs to be replaced.

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The power light is on, and one or more of the cartridge lights blink

One or more of the cartridges are either missing or out of ink.

Solution one: Install cartridges if they have not been installed. Follow these steps to install the cartridges if they have not been installed.

1. Gently pull open the cartridge cover.

2. Remove the new cartridge from its package.

3. Align the cartridge with its colour-coded slot, and then insert the cartridge into the slot. Press down firmly on the cartridge to ensure proper contact.

4. If more than one cartridge is indicated, repeat steps 2 and 3 for the other cartridges.

5. Close the cartridge cover.

Solution two: Replace the cartridge or cartridges if they are out of ink If the cartridges are out of ink, follow these steps to replace them:

2. Remove the cartridge that is out of ink. Grasp the cartridge between the thumb and forefinger, and then pull it out of the slot.

3. Remove the new cartridge from its package.

4. Align the cartridge with its colour-coded slot, and then insert the cartridge into the slot. Press down firmly on the cartridge to ensure proper contact.

5. If more than one cartridge is indicated, repeat steps 2 through 4 for the other cartridges.

6. Close the cartridge cover.

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The power light, resume light, and one or more of the cartridge lights blink

One or more of the cartridges is a non-HP cartridge. To use the non-HP cartridges, press the Resume button to continue printing.

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My print quality is poor

These HP cartridges are just a tank with ink inside, all the technology for transferring the ink from the cartridge to your paper is held within the print heads inside your printer. So long as there are no error messages displayed, the issue is with the printer itself.

Try doing a couple of head or nozzle cleans on your printer through the status monitor on your computer or the display screen on your printer. This will help clear any air bubbles that may be trapped and blocking your normal print.

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Should I update my printer firmware?

Printer manufacturers often use the roll out of their printer firmware updates to prevent you from choosing the origin and type of supplies you use in your printer. This has been done is ways such as blocking the use of remanufactured/recycled cartridges entirely, applying a 'cartridge lock' system that locks a cartridge's usage to a printer and introducing a new 'generation' of the same cartridge model to stop older, remanufactured cartridges being re-used.

Most printer manufacturers will prefer you to set your printer to automatically download and install their updates for this very reason. We suggest that you disable the automatic update option to allow you to continue to use remanufactured cartridges and also to recycle your cartridge after it has been used. By allowing your printer to update the firmware automatically you are risking being locked into only using the more expensive and less environmentally friendly original branded cartridges.

So we highly recommend switching off your printer's firmware automatic updates and dismissing future messages asking you to update your printer. These steps are a general guide to how to stop the updates, but please note that they will vary slightly depending on your exact printer model.

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My cartridge is running out of ink faster than it should

This is true for both original and remanufactured HP cartridges. The page yield displayed by HP is based on a 5% page coverage life test. That is, if you only fill 5% of your page, your cartridge will print for the given number of pages. If you print photos, graphics or even a full page of text, you will be using more than a 5% page coverage. So with normal everyday printing, the page yield listed by HP is unlikely to be the same page yield that you will get out of your cartridge.

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