This version contains the basic circuit schematic diagram and chip signal direction and voltage introduction
We are currently publishing in Chinese, the English version will be released soon
Whatsminer M20S single hash board uses a total of 105 hash chips, the model is "KF1920", and the signal direction is sequentially transmitted from U1 to U105.
Signal direction: "CLK / RXD / RST/CTSI", transfer from U1 to U105, "TXD" transfer from U105 to U1
The whole board has a total of 35 voltage domains, each voltage domain contains 3 chips, a total of 105 chips
Hach board provides 5 test points for easy inspection and maintenance
They are: "CLK / TXD / CTSI / RXD / RXT"
By measuring the voltage and resistance of the test point, you can find the corresponding bad chip
click to download:Whatsminer M20S Hashboard Repair Guide
Related maintenance tools: