Steps to Prevent Electrical Hazards When Repairing a PC
Question
Which of the following steps should a technician take FIRST to prevent an electrical hazard when repairing a PC?
Answers
Explanations
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A. B. C. D.C.
The FIRST step a technician should take to prevent an electrical hazard when repairing a PC is to disconnect the power before servicing the PC. This step is important because it ensures that there is no electrical current flowing through the PC that could cause harm to the technician or damage to the components being worked on.
Disconnecting the power can be done in several ways depending on the situation. If the PC is turned on, the technician should shut it down properly through the operating system, then unplug the power cord from the electrical outlet. If the PC is already turned off, the technician should unplug the power cord from the electrical outlet before beginning work.
After disconnecting the power, the technician should use an ESD strap and/or an ESD mat to further protect the components from electrostatic discharge. An ESD (electrostatic discharge) strap is a wristband that is worn by the technician and is connected to a grounded surface, such as the PC case or a grounded workbench. This helps to prevent static electricity from building up on the technician's body and being discharged into the components, which could cause damage.
An ESD mat is a surface that is also grounded and provides a safe work area for the technician to place components on while working. It helps to prevent static electricity from building up on the work surface and being discharged into the components, which could cause damage.
Finally, it is also important to work on a grounded workbench, which is a work surface that is connected to the ground through a grounding wire. This provides an additional layer of protection against electrostatic discharge.
In summary, the correct answer to the question is C. Disconnect the power before servicing the PC. This should always be the first step taken when repairing a PC to prevent electrical hazards. After disconnecting the power, the technician should use an ESD strap and/or mat and work on a grounded workbench to further protect the components from electrostatic discharge.
