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Hello,

I am facing an issue with a printer model : Smart tank 750. The issue arise when we remove the black printhead and install another one from another smart tank 750 to check if the printhead was working.

After we put back again the printhead that had, the printer gives an error : Protected printhead installed, and we cannot print.

Any solution for this?

3 REPLIES 3
HP Recommended

Hi @Giannis1,

 

Welcome to the HP Support Community! 

 

Thanks for posting your query! We're here to help you get back up and running.

 

I understand you are getting printhead error on your HP smart tank 750 printer.

 

Please click on the link below and follow the troubleshooting steps listed in it to resolve the error.

 

https://support.hp.com/vn-en/document/ish_4513548-4025581-16

 

 

We're thrilled to have the opportunity to assist you and provide a solution. We hope our assistance has been helpful! 

 

If this solution hit the spot, please come back and click "Accepted Solution" to help others find the answer. And if you'd like to say thanks, select "Yes" on the bottom left of the public post, as that would make our day! 

 

Take care, and have an amazing day! 

 

Regards, 

Vince_0406

I am an HP Employee.

If my response helped, please mark it as an Accepted Solution!  It helps others and spreads support.  Also, tapping "Yes" on "Was this reply helpful?" makes a big difference! Thanks! 
HP Recommended

Hello Vince,

Thank you for the reply.

I have already checked this guide but its different from my issue that i have. The issue is locked printheads, i need a way to reset somehow the printheads.

HP Recommended

Hi @Giannis1,

 

You are Welcome!

 

We sincerely thank you for your patience and co-operation during this troubleshooting process.

 

It looks like we may have to raise a service order for the same. 
 

I have sent a private message with all the instructions on how to proceed further.

 

To access your private messages, simply click the private message icon on the upper right corner of your HP Support Community profile, next to your profile name. 

 

Thanks,

Vince_0406

 

I am an HP Employee.

If my response helped, please mark it as an Accepted Solution!  It helps others and spreads support.  Also, tapping "Yes" on "Was this reply helpful?" makes a big difference! Thanks! 
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