Print issues with HP Color Laser 150NW

[Moondog2020]

Hi, I have a pretty new HP Color Laser 150NW that is printing out colour unevenly. 

The colour fades from the left to the right of the page and some faded horizontal lines appear across the page, no matter what colour I'm printing. 

The toner cartridges are official HP ones that came with the printer (bought from Argos) and  they're all still above 70% full. 

I've followed the advice of tilting them side to side to make sure the toner powder is evenly distributed. 

The imaging drum and inside of the printer is clean, and has only printed 50 sheets. 

It doesn't improve whether I'm using matte/glossy HP paper. 

The printer is on an even surface. 

Any advice? 

[KrazyToad]

@Moondog2020

Welcome to HP Community

I have gone through your Post and would like to help

Please follow the instructions in this Link: https://support.hp.com/gb-en/product/hp-color-laser-150-printer-series/24494352/document/c06216694 and let em know how it goes

Thank you

If the information I've provided was helpful, give us some reinforcement by clicking the "Solution Accepted" on this Post and it will also help other community members with similar issue.

[Moondog2020]

Hi, thanks for the reply, I went through all of those steps and it still has not resolved.

Thanks,

Kayleigh

[KrazyToad]

If the issue persists please contact HP Support in your Region for Service Options

1) Click on this link - www.hp.com/contacthp/ 
2) Select your product type below.
3) Enter the serial of your device. 
4) Select the country from the drop-down. 
5) Select the chat or get phone number options based on your preferences. 
6) Fill the web-form and proceed further.
 

Thank you