ix6820 informed that ink was low, after replacing inks I can't print.

[Sweejak]

ix6820 informed that ink was low, after replacing inks checking supply level says that "level is unknown" and I get a blinking resume light. I can't print. Pressing the resume light doesn't seem to reset the machine. I'm stuck.

[ArthurJ]

Hi,

Could you please reply with the information that is on the ink cartridges( ink number, where the cartridge was made, etc). 

Also, I recommend performing a reset of the printer. While the printer is on, unplug the power cord from the printer. While the power is off, press the power button 5 times. After 60 seconds plug the power cord back in and power on the printer.

We look forward to your reply.  

[Sweejak]

The problem corrected itself. I don't know how. I am using genuine Canon inks. 250 and 251