Deutsch | English | Login

Reliability and efficiency through solder joint inspection

Fully automated inspection of PCBs and electrical contacts is essential for the reliability and economic efficiency of manufacturing in the electronics industry. In this field, AOI systems by pi4 set high standards in all areas of inspection, such as correct placement of components, solder joints, solder paste, and potting compound.


High-resolution camera and laser systems form the basis of our automatic inspection systems, which all have a modular and hence flexible design. pi4 offers “classic” in-line machines as well as special solutions for inspection of PCBs in functionally integrated assembled modules.


  • check for presence and correct position of components
  • polarity check of surface-mounted devices
  • inspection of solder paste amount applied
  • solder joints inspection
  • check for short-circuits
  • height measurement by laser
  • optical performance test of LED/LCD display