: Simply resetting the software counter does not physically clean the sponges. If the absorbers are truly full, continuing to use the printer can lead to physical ink leaks and damage to internal electronics. Service Mode Barriers
Every Canon inkjet printer features an internal waste ink pad. This sponge absorbs excess ink during head cleaning cycles and borderless printing. To prevent ink from leaking out of the machine, Canon programs a built-in counter that locks the printer once it reaches a specific maximum threshold.
: While some sources provide it for around $19.99, it is often found as part of broader technical service manual packages or through specialist reset sites like Supported Models (V.3900 & V.3400)
Modifying printer firmware registers comes with distinct risks. Adhere to these rules to avoid permanently corrupting ("bricking") your printer's motherboard: Canon Service Tool V.3900 Download
Right-click ServiceTool_V3900.exe and select .
: Capable of updating internal settings and firmware. Compatible Printer Series
: Triggers deep cleaning cycles and nozzle checks that may not be available through the standard consumer driver. Canon Knowledge Base Technical and Ethical Considerations : Simply resetting the software counter does not
Emma had heard that this particular version of the tool was designed for advanced troubleshooting and maintenance. She had downloaded it from a trusted source (after verifying its authenticity, of course!) and kept it on her trusty USB drive.
You may need to temporarily disable your antivirus software, as it might flag the service tool as a false positive. How to Enter Service Mode (Mandatory):
Triggers deep, intensive cleaning cycles more powerful than standard driver options. This sponge absorbs excess ink during head cleaning
The software cannot find the printer. Ensure your USB cable is secure and you successfully entered Service Mode.
: Specifically designed to reset the waste ink absorber counter, allowing the printer to function after a "full" error.
: Reach out to Canon's support or your regional Canon service center. They can provide you with the necessary tools and information.
Once your printer is securely in Service Mode, follow these steps to clear the error: