Release both buttons. The power light should blink and then remain steady, indicating you are in Service Mode. Step-by-Step: Using the V3800 Tool
Look for the "Main" tab. In the "Clear Waste Ink Counter" section, ensure "Main" is selected in the dropdown menu. Canon Service Tool V 3800 Download
The Canon Service Tool V3800 is a specialized software application used by technicians to perform maintenance on Canon Pixma printers. Its primary function is to . Release both buttons
Troubleshooting the Canon Service Tool V3800: A Complete Guide Canon Service Tool V 3800 Download