It says print head not installed, but I installed new cartridges.

Where and How to Buy Cheap Ink

The aftermarket for printer ink can be a tricky place to shop. Third-party cartridges cost less than the manufacturers' brands--which is why people buy them. But it can be a lot harder to tell whether a third-party vendor sells high-quality ink products.
One time-tested method is to shop at an established retailer (online or brick-and-mortar) that guarantees the quality of its products. Obvious examples include office supply chains such as 123Inkjets, Cartridge World, Office Depot, Office Max, and Staples, all of which carry third-party ink cartridges.
But finding third-party ink for your specific printer model can be a challenge, particularly if your unit is very new, very old, or not very popular. Before driving around town to find the right cartridge, do a little homework online. At today's insane gas prices, you could end up spending $20 on fuel just to save $10 on an ink cartridge.
Like the online arms of other major retailers, Staples.com has an Ink & Toner Finder. Click the link for to find a decent assortment of third-party supplies for Brother, Canon, and Lexmark printers. If you find compatible ink, you can buy it online or check with your local outlet to see whether it has the product in stock.
If you're dealing with a vendor that you haven't used before, ask questions. A reputable online ink retailer will provide names and contact information for the ink manufacturers that it buys its supplies from.
When shopping for remanufactured cartridges, ask the third-party supplier how thoroughly it inspects used cartridges before refilling them. "Do they look for cracks? Do they test the electrical characteristics of the cartridge? A cartridge can look fine but have a broken electrical component, and then it won't work," says Tricia Judge of the International Imaging Technology Council. The vendor should also test the cartridge after the refill, Judge adds.
For our latest in-depth coverage of the pros and cons of printer manufacturers' inks versus third-party inks, see our feature article, "Cheap Ink: Will It Cost You?" and the related slide show, "Head-to-Head: Printer Manufacturers' Ink vs. Cheap Third-Party Ink." For additional advice on reducing the cost of running your inkjet printer, see "The Cheapskate's Guide to Printing," "Save Money on Inkjet Printer Ink," and "How to Spend Less on Printing and Get Better Results." Our digital photography expert, Dave Johnson, has written helpful articles on photo print longevity ("Digital Focus: Make Your Photo Prints Last") and printer paper ("The Paper Chase: Pick the Perfect Paper for Your Printer"). And finally an earlier three-part PC World series on the issues of counterfeit name-brand inks ("Bogus Ink Stink"), third-party ink quality("Cheap Ink Probed"), and high ink-cartridge prices ("Why Do Ink Cartridges Cost So Much?") provides valuable historical background and additional test results for various ink cartridges.

ref:
Where and How to Buy Cheap Ink
The Best Discount Ink Cartridges Stores of 2016

This is an example of why 2nd class refills are junk. I would try to gently clean the printer out. While a lot of people disagree with this advice, a mixture of 90% alcohol in a tiny pipit works well. Then use some lint free q-tips. Most cartridges have electronic chips on them that report the status of the cartridge. Refilled ink cartridges may have bad or defect chips.

Usually if your using the wrong photo paper the ink will come out wet on the print instead of drying while coming out of the tray. Printer settings then need to be changed.

I would also suggest cleaning the print heads. But you say this is a brand new machine. I'm also assuming you are using canon cartridges which would eliminate the head cleaning. Was the software installed ok also. (Driver anyway).

Maybe PURGE UNIT or PRINT HEAD is not functioning properly.

Some printer brands have a cute scheme that reads a "new" cartridge as good, but the refilled one has a small fuse link that is burned out by the printer. Try factory new cartridges. Unplug the printer power for a bit to reset the printer.

The print driver on your computer maybe set to greyscale printing.

Is it a new genuine cart? If so, I have had this problem. Run multiple copies of black only text, Run 50 copies, will still spit out blank pages.Then head clean. If no black repeat. I did this for around 200-250 copies then Volia! black. Hope this helps

see if this link helps you find out why.
MP520 won print black ink Google Search

the printer carriage might be wearing out, it happens on the 5610's, may be time for a new printer. The fading issue sounds like a cartridge issue. Try a oem?

i have an mp170 all in one and when you fill the cartriges they dont show up as full cannon put a chip in the cartridge to con people into buying new ones try siting the cartridges in warm water for a few hours then blot the cartridge with tisue paper if it dont blot out the ink the cartride is finnished and you need a new one .To align the cartridge you flick through the menu on the printer not pc screen look for alignment page print this off then you have to pick the dark boxes on the sheet shade the bit next to it and put on your scan bed and click ok it should scan the sheet and reset the alignment