Canon Service Tool V4720 Patched Download Verified -

Ensure the printer is plugged into the wall but completely powered off.

To use the tool, your printer must be in . Using the tool in standard "User Mode" will result in an error. Enter Service Mode: Connect the printer to your PC via USB cable. canon service tool v4720 download verified

Turn off the printer completely, but leave the power cord plugged into the wall. Ensure the printer is plugged into the wall