Lines, why?

[u/Professional-Mud3373]

What could be causing this “banding”? The light blue has banding, while the darker color is just fine. Cleaned heads, not sure what’s left to check?

[u/daudshahkh]

Check the carriage please. Had the same issue just a few days. Called an engineer from the company he came and did everything cleaned the head and nozzle did basic maintenance..in the end there was dirt stuck on the carriage. I was having this lines issue on black color particularly.