Solving error 5B00 on printers Canon Pixma IP6210D and IP6220D

You need to reset waste ink counter:

Step 1. Enter Service Mode


* Plug in power cable to electric source.
* Press and hold RESUME/CANCEL button
* Press POWER button
* Release RESUME/CANCEL button
* Press RESUME/CANCEL button twice in a row

Step 2. Reset Waste Ink Counter Operation

* Press RESUME/CANCEL button 4 times in a row
* Turn of the printer and then turn on again the printer. the Ink counter has been reseted