HP 6950 All-in-One prints and copies only in grayscale even if all the cartridge are ok

[PaoloMilano]

HP 6950 All-in-One prints and copies only in grayscale even if all the cartridges are ok and original.

Also the local copy (without pc) in color generate a grayscale  copy.

If I copy black ok. If a copy color the output is grayscale.

Same problem printing from PC / Smartphone.

The cartridges black and colors are new and original.

No problem till last october / november.

Is there a Printer parameter that forces the printer to use only black or grayscale  ?

Thank you

Paolo

[sandytechy20]

@PaoloMilano

Welcome to the HP support community.

I understand that your printer is not printing in color, I am glad to assist you.

Make sure the ink cartridges are properly vented and seated correctly

1. 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.

   

3. Wait until the carriage stops moving 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.

   

5. Examine the vent area above the HP logo on the top of the ink cartridge.

   

6. If the ink cartridge still has the orange pull-tab attached, pull to remove it.

   

7. If the vent is clogged, use a straight pin to gently remove excess adhesive from the vent.

8. 1. 

      Clogged vent

   2. With a straight pin, gently remove excess adhesive from the vent

   3. Unclogged vent

9. 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.

10. Slide the ink cartridge into its slot, and then gently press the ink cartridge down until it snaps into place.

    

11. Repeat these steps to inspect the vents on each of the ink cartridges.

12. 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.

13. Close the ink cartridge access door.

    

Follow the steps mentioned in this HP document for further assistance:- Click here

Keep me posted.

If this helps, please mark the public post as an accepted solution so that it benefits several others.

Cheers.

[PaoloMilano]

I did all the steps. Cartridge are new and HP original.

Clean Smear

Clean Printhead

....

Put from november I'm not able to print and copy in color

[PaoloMilano]

always copy and print in grayscale without error message

[sandytechy20]

@PaoloMilano

This seems to be a hardware issue.

I request you to talk to HP support.

They might have multiple options to help you with this.

1. Click on this link - https://www.hp.com/us-en/contact-hp/ww-phone-assist.html
2. Select the country.
3. You will find the phone numbers below the product details.\

Cheers.

[PaoloMilano]

Is there a way to clean the Printhead manually ?

I suppose the problem is related to printhead

Thank you

[Pamela70]

I can copy in color, just not print in color

[sandytechy20]

@Pamela70

Welcome to the HP support community.

Provide the printer model number or the product number for further assistance.

Here is the link to find the product number:- Click here

Which operating system is installed on the computer to which this printer is connected?