When performing a repair on a Sony laptop, you may have noticed some DIP switches on certain Sony laptop systemboards. But what are DIP switches and what are they used for?
DIP switches get their name for an acronym: Dual-line Input Package. They are essentially a bank of switches that control the connection of certain circuits on the Sony mainboard. Some common uses of DIP switches are remote controls, where the switches can be used to send and receive a unique signal to avoid interference with other remote devices.
When it comes to their use in Sony laptop parts, however, DIP switches are often used on the mainboard. They can have a variety of uses. One common use is to set the clock speed and operating parameters of the CPU. If one mainboard is designed to work with multiple processor types, for example, setting the DIP switches can change the voltage and clock speed to accommodate more than one type of CPU. They are also used when multiple LCD Screens are used on a model and resolutions or other parameters are different. If these settings are required, make sure you get the switch information from your spare parts supplier.
Over the past few years, DIP switches have become much less common, particularly in laptops, as limited space has caused manufacturers to do away with any components that are not essential. Also, issues such as IRQ conflicts have become much less common with modern hardware and software, eliminating the need for these types of uses.
So is there any reason to change the DIP switch settings on your Sony laptop mainboard? In almost every case, the answer is no. Mainboards ship from the factory pre-configured, so there is essentially no reason to change them unless you have a very specific instruction to do so, replacing your mainboard or doing some other type of mainboard repair.