This canon printer error code 5B00 indicates that the used ink counter must be reset and that your absorber pads must be replaced.
Step 1: Turn off your canon printer
Steps 2:
Press and keep the stop/reset button down.
Step 3:
Press your stop/reset button on while you're keeping the stop/reset down. This will turn the printer on and off again.
Step 4:
Turn the stop/reset button off and press it again 2 times in a row, with light, tapping motions. Don't forget to keep the on/off button pressed while doing this.
Step 5:
Let turn all the keys you were pressing down and wait until rest be on your screen.
Step 6:
Press the stop/reset button again for 5 times and then touch the on/off button two times fast.
Read more
canon printer error codes and their solutions.