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HP OfficeJet Pro 6900 Printers - Color or Black Ink is Not Printing

This document is for HP OfficeJet 6950, 6951, 6954, 6956, 6958, 6962, OfficeJet Pro 6960, 6968, 6970, 6974, 6975, and 6978 All-in-One printers.
The printer is working, but the printed output is missing black or color ink, or the printed page is blank or has very little ink.
HP recommends that you use genuine HP ink or toner supplies. HP cannot guarantee the quality or reliability of non-HP or refilled cartridges. If you do not use genuine HP cartridges, the steps in this document might not resolve the issue. To check the authenticity of your cartridges, go to hp.com/go/anticounterfeit.
Visit HP SureSupply to check ink or toner cartridge compatibility or purchase replacement cartridges and other supplies.
  1. If necessary, select your country/region.
    Figure : Country/region selector
    Selecting your country/region
  2. Follow the on-screen instructions to order new supplies or check cartridge compatibility with your printer.
You can also purchase genuine HP cartridges and supplies from other retailers.
Step 2: Check the estimated ink levels
Check estimated ink levels to see if any ink cartridges are critically low or empty.
  note:
Ink level warnings and indicators provide estimates for planning purposes only. When an indicator shows low ink levels, consider having a replacement ink cartridge available to avoid possible printing delays. You do not need to replace ink cartridges until print quality becomes unacceptable.
Step 3: Replace any low or empty cartridges
Replace any critically low or empty ink cartridges, and then try to print again. Skip this step if all ink cartridges display full ink levels.
  1. Open the ink cartridge access door.
    The carriage moves to the ink cartridge access area.
      note:
    If the scanner lid is open, the ink cartridge access door does not open.
    Figure : Opening the ink cartridge access door
    Open the cartridge access door
  2. Wait several seconds until the printer is idle and silent before you continue.
  3. Press the tab inward on the front of the old ink cartridge to release it, and then pull up on the ink cartridge to remove it from the slot.
    Figure : Removing the ink cartridge
    Pushing the ink cartridge inward and then pulling up to remove it
  4. Remove a new ink cartridge from its package, and then pull the orange pull-tab straight back.
      caution:
    Make sure you remove the orange pull-tab and plastic wrap completely before you remove the orange cap in the next step. Otherwise, ink might leak from the ink cartridge. When you remove the plastic wrap, the paper label on the top of the ink cartridge tears slightly, which is necessary to properly vent the ink cartridge.
    Figure : Pulling the orange tab on the wrapper straight back
    Pull the orange tab straight back
  5. Hold the ink cartridge by its sides, and then twist the protective orange cap counter-clockwise to snap it off the ink cartridge.
    Figure : Twisting the orange cap to snap it off the ink cartridge
    Twisting the orange cap to snap it off the ink cartridge
      caution:
    Do not touch the copper-colored contacts or the ink nozzles. Touching these parts can result in clogs, ink failure, and bad electrical connections.
  6. Gently bend the tab away from the ink cartridge.
      caution:
    Be careful not to bend the tab out more than 1.27 cm (0.5 in). Moving the tab too far might damage the ink cartridge or cause the tab to break off.
      Figure : Gently bending the tab away from the ink cartridge
      Gently bend the tab away from the ink cartridge
    1. Bend the tab away from the cartridge
    2. Do not bend the tab more than 1.27 cm (0.5 in)
  7. Turn the ink cartridge so that the ink cartridge contacts face downward, and then match the label color with the color dot on the carriage.
  8. Slide the ink cartridge into its slot, and then gently press the ink cartridge down until it snaps into place.
    Figure : Installing the ink cartridge
    Reinserting the ink cartridge
  9. Repeat these steps to install any new ink cartridges.
  10. Close the ink cartridge access door.
    Figure : Closing the ink cartridge access door
    Closing the ink cartridge access door
Try to print. If replacing any low or empty cartridges resolved the issue, you do not need to continue troubleshooting.
Step 4: Make sure the ink cartridges are properly vented and seated correctly
Check the vents on the top of the ink cartridges. If they are clogged or obstructed, the ink cartridges might not work properly, which can affect print quality.
  note:
To avoid print quality issues and dried out ink cartridges, do not leave any ink cartridges outside the printer for longer than 30 minutes.
  1. Press the Power button to turn on the printer, if it is not already turned on.
  2. Open the ink cartridge access door.
    The carriage moves to the center of the printer.
    Figure : Opening the ink cartridge access door
    Open the cartridge access door
  3. Wait until the carriage is idle and silent before you continue.
  4. Press the tab inward on the front of the old ink cartridge to release it, and then pull up on the ink cartridge to remove it from the slot.
    Figure : Removing the ink cartridge
    Pushing the ink cartridge inward and then pulling up to remove it
  5. Examine the vent area above the HP logo on the top of the ink cartridge.
    Figure : Examine the vent area on the cartridge
    Image: Examine the vent area on the top of the cartridge
  6. If the ink cartridge still has the orange pull-tab attached, pull to remove it.
    Figure : Remove the orange pull-tab
    Image: Remove the orange pull-tab
  7. If the vent is clogged, use a straight pin to gently remove excess adhesive from the vent.
      Figure : Cleaning the clogged vent with a pin
    1. Clogged vent
    2. With a straight pin, gently remove excess adhesive from the vent
    3. Unclogged vent
  8. Turn the ink cartridge so that the cartridge contacts face downward, and then match the label color with the color dot on the carriage.
  9. Slide the ink cartridge into its slot, and then gently press the ink cartridge down until it snaps into place.
    Figure : Installing the ink cartridge
    Reinserting the ink cartridge
  10. Repeat these steps to inspect the vents on each of the ink cartridges.
  11. Make sure each ink cartridge is firmly installed in its slot. Run your finger along the top of the ink cartridges to feel for any that are protruding, and if any are, press down firmly until each ink cartridge snaps into place.
  12. Close the ink cartridge access door.
    Figure : Closing the ink cartridge access door
    Closing the ink cartridge access door
Try to print. If these steps resolved the issue, you do not need to continue troubleshooting.
Step 5: Clean the printhead
The printhead could be clogged, and you might need to clean the printhead several times to restore print quality. Use an automated tool from the printer control panel to clean the printhead.
  caution:
Never turn off the printer when ink cartridges are missing. Make sure you replace any missing ink cartridges as soon as possible to avoid print quality issues and possible extra ink usage or damage to the ink system. To avoid issues that require cleaning the printhead, always turn the printer off with the Power button on the printer itself.
Try to print. If these steps resolved the issue, you do not need to continue troubleshooting.
Service or replace your HP product if you completed all preceding steps.
To see if your product is still under warranty, go to the warranty check website http://www.support.hp.com/checkwarranty. Contact HP Support to schedule a repair or replacement. If you are in Asia Pacific, Contact HP Support to find a local service center in your area.
Repair fees might apply for out-of-warranty products.
  note:
Keep a print sample that shows the problem. If the ink cartridges, printhead, or printer is replaced under warranty, the support agent will request the print sample. If the printer is returned to HP, the print sample must be returned with the printer. Place the sample in the output tray when you package your printer for shipping.

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