Assembly Test

Quality and defect-free printed circuit boards (PCBs) are important for the proper functioning of any electronic device. Although PCB manufacturing is largely automated, some of these boards may have manufacturing defects. Left unattended, these manufacturing defects can lead not only to equipment failure, but also to product recalls and wasted money and time. To avoid these, PCBs are tested using different techniques at each stage of manufacture. Functional testing (FCT) is a type of PCB testing performed in the final stages of manufacturing after visual and AOI inspections are complete. It provides insights into PCB quality and helps identify manufacturing defects such as missing components, shorts, opens, incorrect component placement, and more. Kingford provides various types of PCB inspection and testing services, including PCB functional testing.

How is PCB functional testing performed?

Functional testing is performed on the assembled PCB and as follows:

A computer connected to the test point is used for functional testing.

It uses software called firmware that enables our production experts to fully perform functional testing.

Testing also uses instruments such as input/output PCBs, communication ports, and digital multimeters.

The firmware communicates with these external instruments and is used in conjunction with fixtures that interface with the PCB under test.

Usually, this test is performed according to the test procedures and specifications set by the test engineer.

This test helps detect functional failures, incorrect component values and failures of other parameters.