Understand the fundamentals
Connections have different jobs
A miner’s connections do two different jobs. Some carry electrical power, and others carry information. A network cable connects the control board to the site network. Inside the miner, signal connections let the boards communicate, and power connections deliver energy. The shape of a connector depends on the model. Looks alone cannot tell you whether two parts are compatible (made to work together).
Two connectors can look almost the same but use their pins for different things or have different ratings. If a connection looks damaged, loose or discolored, record it from a safe position and follow the approved procedure. Do not reseat (unplug and plug back in), tighten or swap connections while equipment is energized. Never use force to make a part fit when you are not sure it is the right one.
See how it works
Sensors report a location and a condition
A temperature sensor reports the temperature at one particular spot. Readings labeled “board,” “chip,” “inlet” and “outlet” come from different places, and some are estimates. Do not compare them as if they all measure the same place. A missing or unrealistic reading can also mean a problem with the sensor or with how its data is sent.
Fans move air along a planned path through the miner. Fan speed is usually reported in RPM, or revolutions per minute: how fast the fan spins. It does not directly measure how much air passes through the heatsinks, the finned metal parts that carry heat away from the chips. A fan can spin while something blocks the airflow. That is why you read fan speed, temperatures and the miner’s surroundings together.
Connect it to the field
Example: distinguish signal from physical behavior
Suppose the fan speed looks normal while temperatures rise. Fan speed alone cannot tell you whether cooling is good enough. The condition of the incoming air, blocked paths and hot exhaust air flowing back to the intake (recirculation) still matter. In the same way, a fan speed of zero needs checking. Is the miner or the fan actually stopped? Is the sensor reporting correctly? What did the control board record?
At this level, your task is to know what each reading measures and to record the details around it. That gives a later diagnostic check a clear purpose, instead of starting with an unplanned parts swap.
Terms used in this lesson
- Power connection
- Carries electrical energy, not commands or readings.
- Signal connection
- Carries commands or readings between components.
- Sensor reading
- A reported measurement whose meaning depends on its location, units and equipment design.
Optional references & further reading
Use current manufacturer instructions for the exact equipment and your site’s approved procedures. Course levels do not grant task authorization.