Presentation on theme: "Safety Overview Take notes You will be tested. Essential Questions Which specific computer components require special care when handling to protect your."— Presentation transcript:
Safety Overview Take notes You will be tested
Essential Questions Which specific computer components require special care when handling to protect your safety? What is the proper way to lift heavy objects? What is the proper use of fire extinguishers? What is the function of an MSDS? What is the procedure for reporting a hazardous situation or an accident?
Safety Topics Personal Safety Power Hazards Power Supply Hazards CRT Monitor Hazards Thermal Hazards Physical Hazards Lifting Hazards Fire Extinguishers MSDS Report Hazardous Situations and Accidents
Personal Safety The most important part of any job you will ever do around electronic equipment is personal safety. Your primary responsibility is to ensure the personal safety of yourself and others.
Power Hazards Any time you work around a computer or any electrical device, make sure the grounding pin of the 110v plug is intact. If this pin is missing, just touching the device can electrocute you, even if the device is turned off. Never use a cord that is damaged, cut, or missing the ground pin.
First, UNPLUG! Always unplug the power cord from the wall, for any device you are working on. Before opening the device, wait 30 seconds to let electricity dissipate from the device.
Power Hazards Never work on a device until you have unplugged it from the wall. If you are working on a portable device, make sure the battery is out of the system.
Power Supply Unit (PSU) Power Supply Units (PSU) contain capacitors which store high voltage electricity There are no serviceable parts in a PSU CompTIA (A+ exam) states that a PSU is NEVER to be disassembled
Power Supply Hazards Capacitors store electrical charges, even when the device is unplugged. Capacitors in a high voltage Power Supply Unit (PSU) can retain enough current to kill you, even hours after it has been unplugged from the wall. This is why a PSU is a Field Replaceable Unit (FRU) not a serviceable part. In the computer repair field we are concerned with the high voltage PSU that can be found in a desktop PC and in a laser printer. Never attempt to service the PSU of any device.
Laser Printers Laser Printers use high voltages to create images. The power supply of a laser printer contains high voltage capacitors The PSU of a laser printer is a Field Replaceable Unit (FRU) CompTIA (A+) states that the PSU of a laser printer should never be disassembled
CRT Monitor Hazards Another source of high voltage is a CRT monitor. A CRT monitor also contains capacitors that store enough electricity to kill you. Do not work inside a CRT monitor. CompTIA (A+) states that a CRT should NEVER be disassembled
High Voltage Components Three things we NEVER open Power Supply Unit (PSU) in a computer The Power Supply Unit in a Laser Printer CRT monitor The symbols that warn of dangerous voltage
Electrical Shorts A short is caused when electricity is crossed between two circuits that should not be connected. Example, spilling water in an electronic device. There are many screws used with a computer system A single screw left in a case can short out, and ruin a computer or cause a fire. Metallic jewelry can cause a short, burning you and/or ruining electronics Liquids cause shorts, ruining electronics and causing an electrical hazard. Never spray anything onto a computer
Cleaning the Outside NEVER spray a liquid onto any electrical component, even if it is unplugged Spray a mild detergent/water mix onto a clean rag, and gently wipe off any dust or smudges, making sure no liquid gets into the device
(ESD)Electro-Static Discharge Kills! Wear an anti-static wristband when touching any PC component Keep sensitive parts inside an anti-static bag. The symbol for static sensitive parts
HANDLING PARTS Always handle computer parts with care Do not touch the gold connectors or the chips Hold parts by the edges like a photo
Thermal Hazards Thermal hazard refers to components that get hot enough to burn you. If you see a heat sink or heat spreader, it means the component gets hot. Allow a system to cool off before servicing.
Thermal Hazards We use DUST REMOVER to clean the inside of a PC. The liquid can burn skin (frostbite) NEVER touch DUST REMOVER unless instructed to do so Always keep the can upright, and use short bursts, to prevent liquid spraying out The liquid can damage components Huffing DUST REMOVER can cause cardiac arrest
Physical Hazards Arrange your work area to eliminate physical hazards. Dont leave wires or components on the floor where you or someone else might trip over them. Always secure wires when carrying a device, so you do not trip over the wires or get them caught on something which may cause you to drop the device. Always lift with your legs, not your back. Some components are very heavy. Use a cart or ask someone for help. Be aware of cut hazards in the IT workplace. Be aware of laser hazards in the IT workplace.
Cut Hazards Tools of all kinds can be a potential cut hazard. Use caution and know the proper use of all tools. If you get cut, tell the instructor immediately
Sharp Edges Innocent looking edges inside a case can be as sharp as a razor blade. Higher priced cases round the edges to remove the sharpness If you get cut, tell the instructor immediately
Lasers A laser produces a concentrated beam of light. Lasers are found in many components, such as laser printers, optical drives (CD/DVD), laser pointers, laser mice, and fiber optics. A laser can cause eye damage or blindness, never look into a laser or fiber optic cable. The symbol that warns that a device contains a laser is
Fire Extinguishers Fire Extinguisher Ratings Multi-Rating Fire Extinguishers Using a Fire Extinguisher
MSDS Material Safety Data Sheet Any component that presents a potential hazard comes with its own MSDS. The MSDS describes safe handling procedures for hazardous materials. The MSDS also explains proper disposal of the material. For example, an alkaline battery can be disposed of in the trash, a Ni-Cad battery cannot.
Reporting Hazardous Situations or Accidents If you come across something you consider hazardous, notify a supervisor immediately. If someone is injured, no matter how minor, inform a supervisor immediately. If blood is present, try to secure the area so it is not touched or tracked around, and notify a supervisor immediately. DO NOT clean blood yourself. Blood is considered hazardous waste, and must be dealt with properly.
OSHA The Occupational Safety and Health Administration (OSHA) is the main federal agency charged with the enforcement of safety and health legislation.