The device is placed in the position by a servo operated XY table which is responsible for accurately positioning and moving the workpiece under the fixed laser beam. The galvanometers, that are the computer controlled positioning mirrors takes care of the movement of the laser spot on surface mount device. These mirrors are used to control the laser path and are programmed for each component type and these are stored in the computer interface.

The high level of automation of the machine results in continuous process. To increase the stability, a closed loop temperature control is controlled with the help of a pyrometer. The pyrometer continuously monitors the temperature and this ensures repeatable and reliable process. Whenever there is change in temperature, the pyrometer sends a feedback and the laser regulates the temperature again.

The laser soldering machine has a lot of advantages over other conventional machines and processes. It is contactless and has locally limited application of energy. It makes the soldering pure and free from impurities. The laser provides temporally and spatially well-controlled uniform energy input. Very less thermal stress is developed in laser soldering. It reduces the formation of intermetallic compounds because of the rapid joint formation resulting in the formation of high quality joint. The laser requires very low maintenance and is very flexible and easily adaptable. Laser soldering leads to fine grain size and it results in improved fatigue properties.