If you absolutely must test an unknown tool, use a dedicated offline virtual machine (VMware or VirtualBox) with no network access.
Release both buttons. If the power light remains steady green, the printer is in Service Mode. ServiceTool_V3400.exe , select the correct USB port, and use the button under the "Ink Absorber Counter" section to reset. Common Error Codes in V3400 Canon service tool v2000 | Page 21 - PrinterKnowledge Canon Service Tool V3400 -v 3.4 0.0 Download- Extra Quality
Ultimately, while the V3400 offers a solution to common firmware locks, users must weigh the convenience of a free download against the potential for permanent hardware failure or data compromise. If you absolutely must test an unknown tool,
Canon Service Tool V3400 is a professional-grade maintenance utility software used for resetting and servicing Canon inkjet printers. This version is widely regarded as a stable and "Extra Quality" release for managing the internal counters of Canon printer series, specifically the MP, MX, iP, iX, and Pro series. It allows service technicians to extend the life of the printer by resetting the "Waste Ink Counter" and performing other maintenance tasks that standard driver software cannot access. ServiceTool_V3400
: Because this tool is not officially distributed by Canon to consumers, many download links found on the web may contain malware or viruses.
—a hidden tally that tracks how much ink is used during cleaning cycles. Once this counter reaches its limit, the printer locks itself to prevent ink overflow, requiring a manual reset. Key Features and Compatibility Canon Service Tool v3400 скачать бесплатно