2 Essential QuestionsWhich 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?
3 Safety Topics Personal Safety Power Hazards Power Supply Hazards CRT Monitor HazardsThermal HazardsPhysical HazardsLifting HazardsFire ExtinguishersMSDSReport Hazardous Situations and Accidents
4 Personal SafetyThe 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.
5 Power HazardsAny 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.An electronic device is protected from becoming energized by the _________ if it has a three prong power cord. (ground pin).Never use a power cord that has been __________ or is missing the ____________. (damaged) (ground pin)
6 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.The first and most important thing to do before working on any electronic device is ___________ (unplug from the wall)Before opening an electronic device, you should wait __________ for the electricity to dissipate. (30 seconds)
7 Power HazardsNever 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.If you are working on a portable device, such as a laptop, remove the __________ before opening the device. (battery)
8 Power Supply Unit (PSU) Power Supply Units (PSU) contain capacitors which store high voltage electricityThere are no serviceable parts in a PSUCompTIA (A+ exam) states that a PSU is NEVER to be disassembledPSU stands for ____________. (Power Supply Unit)
9 Power Supply HazardsCapacitors 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.FRU stands for _____________. (Field Replaceable Unit)If a component is considered a FRU, that means it should be ______________ instead of ___________. (replaced) (repaired)
10 Laser Printers Laser Printers use high voltages to create images. The power supply of a laser printer contains high voltage capacitorsThe 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
11 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 disassembledThe device shown is a ___________. (CRT monitor)
12 High Voltage Components Three things we NEVER open Power Supply Unit (PSU) in a computerThe Power Supply Unit in a Laser PrinterCRT monitorThe symbols that warn of dangerous voltageThe three specific computer related components that should never be opened are _____________, ____________, and __________. (PSU from a computer, PSU from a laser printer, CRT monitor)Describe the symbol that warns of high voltage. (Yellow triangle with lightening bolt)
13 Electrical ShortsA 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 systemA 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 electronicsLiquids cause shorts, ruining electronics and causing an electrical hazard. Never spray anything onto a computer
14 Cleaning the OutsideNEVER spray a liquid onto any electrical component, even if it is unpluggedSpray 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
15 (ESD)Electro-Static Discharge Kills! Wear an anti-static wristband when touching any PC componentKeep sensitive parts inside an anti-static bag.The symbol for static sensitive partsESD stands for ________________. (Electro-Static Discharge)To prevent ESD when working on a computer, you should wear an ____________. (anti-static wristband)To prevent ESD, you should keep static sensitive parts in a ____________ (anti-static bag)Describe the symbol that warns you that a part is sensitive to ESD. (triangle with hand)
16 HANDLING PARTS Always handle computer parts with care Do not touch the gold connectors or the chipsHold parts by the edges like a photoWhen handling computer parts, never touch the ______________ or ___________(gold connectors or chips)Always hold computer parts by the ____________(edges)
17 Thermal HazardsThermal 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.A heat sink should be a warning that a component gets __________(hot)
18 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 soAlways keep the can upright, and use short bursts, to prevent liquid spraying outThe liquid can damage componentsHuffing DUST REMOVER can cause cardiac arrestDust remover spray should never be _________ unless your instructor tells you to do so.(touched)Dust remover spray can injure skin by causing _________(frostbite)The proper use of dust remover spray is to keep the can _________ and spray using _________(upright) (short bursts)
19 Physical Hazards Arrange your work area to eliminate physical hazards. Don’t 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.When lifting a heavy object, lift with your ________(legs)When moving a device that has a cord, _________ the cord to prevent tripping over it(secure)
20 Cut HazardsTools 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 immediatelyYou should be aware that many tools can cause ________(cuts)If you are injured, you should ________________ immediately(tell the instructor)
21 Sharp EdgesInnocent looking edges inside a case can be as sharp as a razor blade.Higher priced cases round the edges to remove the sharpnessIf you get cut, tell the instructor immediatelyA computer case may be a hazard because of ______________(sharp metal edges)
22 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 isList computer-related components that pose a laser hazard.(laser printer, optical drives such as CD/DVD/Blu-Ray, laser mouse, fiber optics)Describe the symbol that warns of laser hazard.(triangle with light scattering)
23 Fire Extinguishers Fire Extinguisher Ratings Multi-Rating Fire ExtinguishersUsing a Fire Extinguisher
24 List the three classes of fire extinguisher and the type fire it is used for. (A-wood or paper)(B-Grease or gasoline)(C-electricity energized)
25 Give an example of a rating that means a fire extinguisher can be used for any fire. (ABC)
26 When using a fire extinguisher, P. A. S. S When using a fire extinguisher, P.A.S.S. stands for _______, _______, ________, ________
27 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.MSDS stands for ________________(Material Safety Data Sheet)An MSDS describes safe handling procedures for __________________(hazardous materials)
28 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.
29 OSHAThe Occupational Safety and Health Administration (OSHA) is the main federal agency charged with the enforcement of safety and health legislation.OSHA stands for ___________(Occupational Safety and Health Administration)
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