Whatsminer M31S hash board has a total of 111 ASIC chips, and every three chips form a domain, a total of 37 domains. The positive pole inputs 13V voltage, and after transmission, each domain will obtain a domain voltage of about 0.3V. In addition, each ASIC chip on the hash board has 5 signals, namely CLK, TXD, CTSI, RXD and RST signals. The correct maintenance procedure is to check the voltage first, and then check whether the signal transmission is normal.
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