Why is the resistance value on the circuit board different from that measured by the universal meter?
The measuring circuit board when the external circuit due to the effect of other components, the numerical and resistance multimeter to measure the different values (measured value generally too small, if the measurement value is much larger than the nominal resistance, the resistance may be damaged or weld), the actual measured value is parallel with external circuit resistance value.
The circuit board and the circuit diagram is one-to-one, the corresponding physical components on PCB symbols in circuit diagram, circuit board copper wire corresponding to the circuit diagram of the connection pad is a component and connection connection point. Circuit board and circuit diagram of the corresponding, you can clearly understand the composition of the circuit and device appearance, location and other characteristics, but also the maintenance and PCB design basis. I don't know how to explain your question. I hope it will help.
