Zero basic learning of Innosilicon T2 miners work process, maintenance tools use maintenance process, focusing on T2 miner troubleshooting, practical operation, in-depth detection, and easy-to-understand courses, making everyone an absolute miner maintenance master. The course focuses on the operation and maintenance of the Innosilicon T2, the principle and repair of the domain voltage, the judgment and replacement of the hash board chip, the signal flow and detection of the ASIC chip test point. In addition, the use of the test stand (maintenance jig), and the common faults of T2 miners such as low hash rate, high temperature, chip NG, voltage imbalance in the voltage domain, etc., do detailed explanation and processing.