PIXMA G7020 faded printing

[naushi]

I have a Canon Pixma G7020 - Dell laptop windows 11. I was getting faded printing, so I added all the 4 inks and filled all the 4 containers.  I tried printing again, but it printed half a page with dark ink but the other half page was very faded. I tried to do cleaning maintenance bit it failed during the process with error 5200. I managed to shut the printer, unplugged it and started after 10 minutes. Tried printing again and it barely prints anything. I also did nozzle check, print alignment but nothing helps. I don't have any options left. Please suggest what I should do. 

[DerrickL]

What did the nozzle check look like?  Did the pattern show missing lines or weak color?

[naushi]

I just did another nozzle check. all it did was print a yellow box and a blue box - rest of the page was blank. Paper ejected quickly after that - earlier I did it printed quite a few boxes and paper went back and forth before ejecting. 

[DerrickL]

Run a deep cleaning it may need to be done twice. After that run a second nozzle check. If still not correct then run an ink flush.

[naushi]

When I do the deep cleaning, it errors out within 30 seconds. with the error 5200. 

[DerrickL]

Error 5200 is usually caused by an ink problem like bubbles in the lines. I suggest you run an ink flush.

[StrawberryGirl3]

If you do everything you probably need new ink heads 

[naushi]

what are ink heads and how do you install them. 

[DerrickL]

Technically they are print heads. Before you go that route, run an ink flush. Here is the guide to do that:

https://support.usa.canon.com/kb/s/article/ART175773

[naushi]

thanks for the guide. I will check this site. I just wanted to mention that I replaced the print head a couple of months ago based on advice from the forum. Since then, I have printed about 20 pages before faded printing started. I filled the black ink and tried printing. It primed half page real dark but the rest of the page was faded. Every time i fill more ink this happens. Let me try ink flush and get back with results.