What would cause my 7155 Envy to print only shades of blue and black? It's not the ink cartridge

[Lazydog01]

Envy 7155

[sandytechy20]

@Lazydog01

Welcome to the HP support community.

Did you make a copy and check if that prints fine?

Meanwhile:- 

Print a Print Quality Diagnostic page

1. On the control panel, swipe down to open the Dashboard, and then touch the Setupicon.

2. Swipe up on the display, touch Reports, and then touch Print Quality Report.

If that does not print fine, follow these steps to fix the issue.

Clean the ink cartridges

1. On the control panel, swipe down to open the Dashboard, and then touch the Setupicon.

2. Swipe up on the display, and then touch Printer Maintenance.

3. Touch Clean Cartridges, and then touch Continue.

   A Print Quality Diagnostic page prints.

4. Examine the Print Quality Diagnostic page.

   • If the print quality is unacceptable, touch Clean Again to continue the next level of cleaning. Repeat these steps for the third cleaning stage, if necessary.

Refer to this HP document for more assistance:- Click here

Let me know how it goes.

To thank me for my efforts to help you, please mark my post as an accepted solution so that it benefits several others.

Cheers.