PCs are a group of modules and peripherals, all functioning together to complete a job. Sometimes one of these modules has a problem, or needs to be changed to improve the performance of the computer. This may involve opening the PC and working inside the case.
When opening a computer case, it is essential to take some basic safety measures to prevent damage to the computer as well as harm to the technician. Before opening the case, verify that the PC is switched off and the power cable is unplugged. Before opening a PC find a suitable work area. Clean the work area very good because dust is very bad for electronics.
If the computer is very old, use something to protect your eyes from dust, small screws, and other dangerous metallic components.
Another thing you should be aware of is that the power supplies and monitors work at high voltages and this can be very dangerous. Only technicians with special training should open these devices.
Several computers nowadays contain hot-swappable components and we do not have to turn off the computer before adding or removing modules. This technology allows the computer to stay operational during repairs or upgrades. Unfortunately, this is an expensive technology and for that reason it is only available in high performance servers.
In general it is better to turn off your computer before opening the case or removing any components. Connecting or removing modules with the power on, in a computer that is not hot-swappable, can seriously damage the system and the technician.
Internal system modules are very sensitive to static electricity. Static electricity can be transferred from your body to electronic modules inside the PC. This phenomenon is very dangerous for all the electronic components. Static electricity can also create intermittent faults which are very difficult to isolate. Always remember that proper grounding is necessary. A special wrist grounding strap can be used to connect the technician to the PC case.
Keep in mind that you should never use a lot of force when installing components. Too much force can destroy both the motherboard and the piece being installed, and can prevent the computer from working properly. The problem is not always visible. If you use extra force you will damage the connectors and you might also destroy the new system modules.
It is a good idea in order to check that all safety measures are followed to make a safety agenda which can be followed.
Manolis Skoras is a Cisco, Microsoft and HP Certified Trainer and systems-network engineer. Recently he created a site about IT Exams to help his students and people around the world to better understand the material they will be tested on, thus having greater success rates. Check Certify4Sure today!
No comments:
Post a Comment