Liancheng Fa Longyixi T series stage rental screen

Lianchengfa Longyixi T series stage rental screen has the characteristics of anti-collision, ultra-thin, fast installation, fast maintenance, high waterproof and so on.

1. Check the appearance quality of the selected material.

①, PCB sheet and processing quality.

②, IC device brand and consistency.

③, luminous lattice quality.

2. Check the circuit design Circuit design specifications, PCB wiring conforms to the technical requirements of LED display.

3. Check the welding quality Check whether the patch has components missing or wrongly pasting, and whether there is a short circuit of component pin burrs. Check whether the solder joints of the straight plug-in are smooth and round, whether the board surface is clean and tidy, and there is no false soldering or missing soldering. Check the flatness of the light-emitting dot matrix and the consistency of the ink color.

4. Power-on test (refer to the steps of "Performance Test Report").

①. Power on to test the consistency of the luminous lattice.

②. Power-on test to see if the line drive tube CEM4953 is effectively protected.

③. Power-on test signal transmission capability.

The above is the quality inspection method of the LED module. Only by controlling the quality of the LED unit board can the quality of the large LED screen be guaranteed!