How to Overcome Error Number : 5200 on Canon Pixma MP237 and IP2770 printer
Make sure the printer is turned off , and the position of the power cable plugged in electric outlet .
1) Then the Resume button pressed ( still do not hold off ) , then the Power button is pressed until the green light lights .
2) Released reset button , while the power button is still on hold
3) In the state the power button is still on hold ,
4) press the resume button 5 times ( the LED lights will light up alternately , orange , green , etc.)
5) After pressing the resume button 5 times , Release the two buttons simultaneously . LED lights will flash or blink for a moment and then will turn green .
6) Furthermore, the computer will detect a new printer , you just ignore it and wait until the process is complete the detection of a new printer .
Once they have finished detecting..use Reset Printer Software ( Service Tools )