: This happens if multiple printers are plugged in, or if you are trying to run the tool over a wireless network connection.
Locate the Clear Ink Counter section inside the "Main" tab.
: Resetting the counter digitally does not physically clean the ink pads. For long-term use, the pads should be replaced or cleaned to prevent physical ink overflow. Canon Service Tool V.3900 Download
: Using the wrong version (e.g., trying to use V.3900 on a newer G-series printer that requires V.5105) can permanently lock the printer's mainboard.
Search for reputable, secure sites specializing in printer maintenance tools. : This happens if multiple printers are plugged
: Tools like V.3900 are often not officially distributed to consumers by Canon. Instead, they are found on third-party sites like
A: Not all Canon printers support V.3900. It is known to work with the MG2400 and MG3500 series. For other models, you may need a different version, such as V.3400, V.4718, V.4905, or later. For long-term use, the pads should be replaced
Before running the tool, your printer must be in . If you do not do this, the tool will freeze or report an error. Turn off the printer (but leave it plugged in). Press and hold the Stop/Resume button (red triangle). Press and hold the Power button. Release the Stop/Resume button (while still holding Power). Press the Stop/Resume button five times in succession.
High-speed USB cable (Wi-Fi or network resetting is not supported).
This software is primarily used by technicians and DIY users to resolve specific system errors that cannot be cleared through standard settings.
Right-click on Service Tool V3900.exe and select .