PCB Fault detection
date：Jan 16,2019
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PCB fault detection
PCB fault detection and analysis: the system has two pressure tanks, one on top and the other on the bottom, separated by a pneumatic shut-off valve in the middle. The pressure tank is equipped with two probes, one at the top of the tank and the other at the bottom of the pot. Used to detect the position of the steel lens of the pressure vessel, the probe into the tank, the measurement, and the amplification circuit in the pressure tank.
Check the status of the pressure tank probe according to the electrical schematic based on the circuit board design structure and the alarm content. Select MDI mode, press the system function key, select [PMC], [pmcdgn], and [status] soft key to see 134 = 1, and the trigger of the upper probe signal, indicating that the particles are not being probed. From the observation window, we can see that it is covered by the pellets and further check the input signal to the CNC line