A sub-assembly is a set of parts put together to make part of a finished assembly. An assembly refers to a set of sub-assemblies to make something that carries out a certain task. The most general areas where a sub-assembly will be used is in computers, optical, and electronics. Electronic sub-assemblies are used in a vast diversity of consumer electronics. Small home appliances, such as portable media players and microwaves have sub-assemblies as well. In a microwave, there are electrical plugs, the actual control panel, and heating elements. All of these areas may include smaller sub-assemblies or groups of parts.
The control panel will include the electronic sub-assembly. Usually, it is made up of a printed circuit board, or PCB, and it also includes a light emitting diode, also known as an LED display. The keypad that manages the cooking time is also part of the electronic sub-assembly. A soldering iron was used to connect these three items together. The electronic sub-assembly is then paired with the plugs, the heating elements, and the casing or the cover to make the microwave.
Electronics devices such as televisions or cell phones also have electronic sub-assemblies as well. The PCB and display for cell phones and portable media players are smaller than the ones a microwave have, but they work almost the same. Cell phones have extra radio frequency, or RF components that let them pick up cell tower signals. Then the components are paired with the outer housing to finish the device.
Televisions merge both electronic sub-assemblies and an optical separately assembled unit in the production process. The electronics PCBs, house all of the brains that let the television operate, such as the volume control and the channel control. The optical separately assembled unit operates the display, even if it is liquid crystal display, also known as LCD, or plasma. Optical separated assembly units are also part of projection equipment, theater lighting, and cameras. Computers have custom made subassemblies only to their application. In a computer separately assembled unit, multiplex electronic sub-assemblies are joined together to make the central processing unit, or CPU. The CPU is the actual part of the computer that operate the machine. It is comprised of the memory, sound sub-assemblies, and processing which are usually made up of various PCBs.
Each PCB may include hundreds of components connected to the PCB using solder. The PCB is then paired with other PCBs. This makes a part of the computer responsible for a particular operation. Once all of the manufacturing process is finished, the PCBs are put into a case that makes the computer.
Posted by LeanCor Supply Chain Group
LeanCor Supply Chain Group is a trusted supply chain partner that specializes in lean principles to deliver operational improvement. LeanCor’s three integrated divisions – LeanCor Training and Education, LeanCor Consulting, and LeanCor Logistics – help organizations eliminate waste, drive down costs, and build a culture of continuous improvement.Facebook LinkedIn Twitter Google+