Look for clean zip packages that do not require an external patcher or keygen.
| Error | Likely Cause | Solution | |-------|--------------|----------| | "No printer connected" | Printer not in Service Mode | Re-enter Service Mode; try a different USB port/cable. | | "Communication error" | Driver conflict | Uninstall generic printer drivers, use Canon’s official driver first. | | Tool crashes on launch | Missing Visual C++ runtime | Install Visual C++ 2015-2022 Redistributable (both x86 and x64). | | "EEPROM Verify Failed" | Wrong tool version for model | Double-check that v4720 supports your exact printer. | | Printer still shows error after reset | Absorber physically full | Waste ink pad reset only works if pads are not saturated beyond hardware limit. You may need to replace pads. |
Disclaimer: This article is for educational purposes. Modifying your printer’s service counters may void your warranty. Always back up EEPROM data if possible. Proceed at your own risk.
: The tool only works when the printer is connected to a computer via a USB cable ; it will not function over Wi-Fi or LAN. Run the Utility : Launch the ServiceTool.exe . canon service tool v4720 download verified
What specific is showing on your printer?
Therefore, your best course of action is almost always to choose one of the safer alternatives:
If you click a button in the software and receive an "Error 006" pop-up, it means the software cannot establish secure communication with the device. Look for clean zip packages that do not
— If your printer is within warranty or you are willing to pay for out-of-warranty service, Canon can perform the necessary maintenance properly.
If you reset the counter multiple times without cleaning or replacing the physical waste ink pads, the excess liquid ink will eventually overflow out of the bottom of the printer, risking permanent damage to your desk, floor, or internal electrical circuits. Consider installing an external waste ink bottle mod if you print in high volumes.
The green power light will flash for a few seconds and then stay solid. Your computer may notify you that it found "New Hardware" or an "Unrecognized USB Device." This means you have successfully entered Service Mode. Step 2: How to Use v4720 to Reset Waste Ink Counters | | Tool crashes on launch | Missing
(e.g., Trojans) by antivirus software. If you choose to use a third-party version, experts strongly recommend using a dedicated spare computer or a separate hard drive with no personal data. Known Sources and Risks Canon Service Tool instructions !... - PrinterKnowledge
Ensure the printer is plugged into the wall but completely powered off.
Many legitimate archives use the password canon or service . However, if the site requires a survey or personal data, abort. A verified tool should be ready to run without unlocking tricks.