Keep holding the Power button, then release the button.
Connect your printer via USB cable (Wireless connection does not work). Ensure your printer shows up in the tool.
It checks the status of sensors and paper feeders. The Danger of "Extra Quality" Download Links Canon Service Tool V3400 -v 3.4 0.0 Download- Extra Quality
The is an essential utility designed to clear the "Waste Ink Tank Full" error (Error 5B00 or P07) . This error locks your printer when internal ink absorber pads are saturated.
Canon PIXMA printers are known for their reliability, but they eventually stop working due to built-in maintenance counters. When this happens, your printer will flash error lights and display codes like "5B00" or "1700," signaling that the waste ink absorber pad is full. Keep holding the Power button, then release the button
Unlike official firmware, these “extra quality” downloads are static. If your printer firmware is newer than 2019, the tool may not work — or worse, cause unpredictable behavior.
Based on reverse‑engineered reports, V3400 version 3.4.0.0 works (or reportedly works) with: It checks the status of sensors and paper feeders
the printer but leave it connected to the power outlet and your computer via a USB cable (Wi-Fi will not work). Press and hold the Stop/Reset button.