Canon Service Tool V3900 Download Hot [better] Access

What is showing on your device?

The Canon Service Tool V3900 will not recognize your printer if it is connected under normal operating conditions. You must manually force the printer into before opening the software. Follow these steps precisely: Turn off the printer, but leave the power cable plugged in. canon service tool v3900 download hot

Resetting the digital counter does not magically clean the physical ink pads. What is showing on your device

Turn off the printer but leave it connected to the computer via a USB cable. (Wi-Fi connections will not work for this process). canon service tool v3900 download hot

：废墨计数器清零不等于废墨收集器自动“变干净”。单纯重置计数器但不清理或更换废墨海绵，随着废墨继续积累，最终可能导致废墨溢出、打印机内部电路腐蚀，造成不可逆的硬件损坏。在条件允许的情况下，建议同步清理或更换废墨收集器，这样才能保证打印机真正健康稳定地长期运行。

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使用 Service Tool 时可能出现以下错误提示：