Brother MFC-465CN won't prink cyan

Okay - I had same problem with yellow ink. Try these steps:
- Unplug
- Plug back in while holding MENU button (all 4 function lights will light up when printer is in maintenance mode)
- Touch 7, 6, 3 then start (to initiate POWER PURGE cleaning mode - it uses 3 times the ink as normal cleaning)
- When done, press 0 then 9 to print test page
- If improved, do 763Start trick and test again
- To exit maintenance mode, press 9, 9 to restart
If purges don't help, you may need a new printhead

I am doing this right now and I just got the yellow ink to start printing again; just need to keep doing it to see if the black will start printing again.

I also got 2 cotton swabs, taped them together to make them long enough to get to the ink contact points and used rubbing alcohol on each Qtip to clean around the areas before doing the above steps. Found this info on another site, and it mentioned to pay attention to the copper contacts too (clean gently). If really inky, you can use a cotton ball for the areas near the front to get excess off also.

UPDATE: have run the purge clean function twice and black is beginning to show up, so will keep doing it! Progress!!!

Good luck

You got to re-check back the Ink Cartridge you've buy recently.. Sometime the ink already freeze inside the cartridge bcoz its been really-really-really long time they keep before the usage.. Ive also have experience about problem like this b4, so better re-check/change back the cartridge.. Or If the
printer head is not at the cartridge, it is seperate from the cartridge, you have to check back the printer head also.. normally all the new printer head comes together with the cartridge.. and prefer to use the Original Cartridge more than Pirated Cartridge ok.. Cheap Cartridge always giv a lot of problem, especially like Your problem.. Thats All, Good Luck and Happy Trying..

DEAth-MaN88®