: The hardware pads must be cleaned or replaced, and the digital counter must be reset using a Service Tool. Compatible Service Tool Versions
The is a specialized diagnostic software used primarily to address critical maintenance errors, such as the 5B00 Support Code , which indicates the ink absorber (maintenance tank) is full. While official 2021-specific versions are rarely hosted directly on Canon's public support pages, the standard ST_V5105 or later versions remain the industry standard for this model. Key Functions of the Service Tool canon mb2140 service tool 2021