PCB layout process, the system layout is finished, PCB plans to review whether it is reasonable to see the layout of the system, whether we can achieve the best results. How to test the layout of the PCB printed circuit board system?

1.System layout to ensure the reasonableness of the wiring, or optimal, whether it can be reliably carried out to ensure that wiring, whether it can guarantee the reliability of the circuit work. Layout when the direction of the signal, and the power and ground network overall understanding and Planning.

2. Printed circuit board size to match the size of the processing drawings, the ability to meet the requirements of the PCB manufacturing process, the presence or absence of behavior marks. That require special attention, many PCB circuit board layout and wiring design pretty reasonable, but neglect the precise positioning of the positioning connectors, lead to the design of the circuit and other circuits can not docking.

3. Components on a two-dimensional, three-dimensional space without conflict. Note the actual size of the device, particularly the height of the device. Welding Free layout of components, the height can not exceed 3mm.

4.Component placement density and orderly, neat, and whether all the cloth finished. When the component layout, not only to consider the direction of the signal and the signal type, need to pay attention or protection, taking into account also the overall density of the device layout, so that the density and uniformity.

5 whether the element to be replaced frequently be easily replaced, the plug-in board is inserted into the device is easy. Should ensure that frequent replacement of components, replacement and patch convenience and reliability.

6. Adjust the adjustable components.

7. Proper distance between the heat-sensitive components and heating elements.

8.In heat equipped with a heat sink or fan, the air flow is unobstructed. It should be noted the heat dissipation of the components and circuit boards.

9.The signal toward smoothly and interconnect shortest.

10 plugs, sockets and mechanical design are contradictory.

11 line interference problem considered.

12. Whether the mechanical strength and performance of the circuit board to be considered.

13. Artistry of the circuit board layout and its aesthetics.