Guidelines in Troubleshooting

Safety Guidelines in Troubleshooting a Equipments

          •Remove  your watch or any other jewelries and secure loose clothing

          •Turn off  the power and unplug equipments before opening the case  and performing service

          •Cover any sharp edges inside a computer case with tape

          •Never open a power supply or a monitor

          •Do not touch area in printers that are hot or use high voltage

          •Know where the fire extinguisher is located

          •Know where the first aid kit located

          •Keep food and drinks out of your work space

          •Keep your work space clean and free of clutter

Fire Safety Guidelines 

•Never fight a fire that is out of control or not contained

•Always have a planned fire escaped route before beginning any work

•Get out of the building quickly

•Contact emergency services for help

Type of Fire Extinguisher

•Class A – effective for fires burning paper, wood, plastic, and carbon materials

•Class B – effective for fires burning gasoline, kerosene, or organic solvents

•Class C -  effective for fires burning electrical equipment

•Class D -  effective for fires burning combustible metals such as magnesium and titanium

                     Basic Rule of Using Fire Extinguisher

•P – pull the pin

•A -  aim at the base of the fire not flames

•S – squeeze the lever

•S -  sweep the nozzle from side to side

Safety Procedures in Protecting the Equipment's from damage and Data loss 

•Static electricity is the build up of an electric charge resting on a surface, this build up and sudden release of energy is called Electrostatic Discharge (ESD)

  ESD Protection Recommendation

§Keep all components in antistatic plastic bags until you are ready to install it.

§Use grounded mats on work benches and on the work area floor.

§Use antistatic wrist straps when working on a computers.

§Avoid working on carpeted area.

Power Fluctuation Types 

•Blackout – loss of AC power. A blown fuse, damage transformer or downed power line ca cause blackout.

•Brownout – reduced voltage level of AC power that lasts for a period of time

•Noise – interference from generators and lightning. Results in unclean power which can cause errors in a computer system

•Spike – sudden increase in voltage that lasts for a very short period. Spike can be caused by lightning strike, but can also occur when the electrical system comes back on after a blackout.

•Power Surge – dramatic increase in voltage above the normal flow of electrical current 

Power Protection Devices

•Surge Suppressor – help protects against damage from surges and spikes

•Uninterruptible Power Supply (UPS) – helps protect against potential electrical power problems by supplying electrical power to a computer or device. Able to supply consistent quality of power when brownout and blackout occur.

•Standby Power Supply (SPS) – help protect against potential electrical power problems by providing back up battery to supply power when the incoming voltage drops below the normal level.

    - the problem with this device is the time it takes to switch over to the battery .