HP Model 744 HP Model 744 Owner's Guide - Page 44
Safety Precautions, Unplugging the power supply before removing or installing a part.
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Installing Accessories Safety Precautions Safety Precautions It is essential to practice safety precautions when working with any electrical or electronic products. Following these safety precautions can help protect both you and the equipment from injury and possible permanent damage. Whether the ICs are installed on a printed circuit board or lying on a table, integrated circuit components can be damaged by electro-static discharge. Static charges can build up in people to a potential of several thousand volts by simply walking across a room. Protect integrated circuits by: • Using a static-free work place and wearing clothes that do not hold static charges before handling any of the workstation's PC boards. • Unplugging the power supply before removing or installing a part. • Touching sheet metal with your fingers before touching the printed circuit assembly. If the assembly is not going to be re-installed, place the assembly in an antistatic bag and set it aside. Following these precautions extends the life of the computer products you maintain. 2-4