Ensure the USB cable is connected. In the "USB Port" section, the tool should recognize your printer.
If you see an when clicking "Set"? Whether the printer's green light is solid or flashing ? Share public link canon mb2140 service tool 2021
Press and hold down the button (represented by a red triangle inside a circle). Ensure the USB cable is connected
📌 If the printer powers on normally, repeat from step 1. This process may take multiple attempts to master. canon mb2140 service tool 2021