While most users seek this tool for a single reason, it contains a suite of diagnostic features:

The green LED power light will flash a few times and then stay lit solidly. Your computer may notify you that it found new hardware (e.g., "Canon Device"). Your printer is now in Service Mode. How to Use V4720 to Reset the Waste Ink Counter

: Most free versions found online are flagged as malware by antivirus software. Experts recommend running the tool on a dedicated "clean" computer or a spare hard drive to avoid system infection.

Adjusts the localized settings of the printer's firmware.

Disclaimer: Use this tool entirely at your own risk. Follow these steps precisely to minimize the chance of issues.

Run the V4720 software on a Windows PC connected via USB (Wi-Fi will not work). Important Warnings Risk of "Brick"

⚠️ : Canon Service Tool does not run natively on macOS or Linux. You must use a Windows computer connected via a physical USB cable to complete the process. Step-by-Step: How to Use Canon Service Tool V4720

: Calibrates the print head for better quality.

After performing a software reset, it is highly recommended to eventually open the lower housing of the printer to wash and dry the felt absorbers, or route the waste ink tube into an external waste ink bottle.

Clears the 5B00, 5B01, and 1700 errors instantly.

| Problem | Likely Solution | | :--- | :--- | | | This usually means the tool is incompatible with your printer model. Do not proceed; find the correct version for your printer. | | Service Mode doesn't lock in | The process is timing-sensitive. Turn off the printer, disconnect it briefly, and try the button press sequence again. | | The reset didn't work | Run the tool again, ensuring the correct printer is selected and USB is the connection type. Some models may require multiple resets. | | Your computer deletes the file | Your antivirus has flagged it as a threat. To use it, you may need to temporarily disable real-time protection or add an exception, but assess the risk first. |

Unplug the power cable for 30 seconds, plug it back in, and strictly repeat the button-pressing sequence. Ensure you hit the Stop button exactly 5 times (some older models require 4 times, while some newer ones require 6). Important Safety Warning

Clears the Main and Platen waste ink absorber counters back to 0%.

Genuine service tools run directly as application files ( .exe ). Never run files packaged as suspicious .bat scripts or media files. Step-by-Step Guide: Putting Your Printer into Service Mode

Once your printer is in Service Mode, follow these steps to reset the counter using the downloaded software: