PREVENTIVE MAINTENANCE. Does your system have a preventive maintenance plan ?
PC Maintenance: Preparing for A+ Certification Chapter 2: Safety and Preventive Maintenance.
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Transcript of PC Maintenance: Preparing for A+ Certification Chapter 2: Safety and Preventive Maintenance.
PC Maintenance: PC Maintenance: Preparing for A+ Preparing for A+
CertificationCertificationChapter 2: Safety and Preventive Chapter 2: Safety and Preventive
MaintenanceMaintenance
Chapter 2 ObjectivesChapter 2 Objectives
Identify potential safety hazards when Identify potential safety hazards when working on PCsworking on PCs
Identify fire extinguisher typesIdentify fire extinguisher types Understand electrostatic dischargeUnderstand electrostatic discharge Understand electromagnetic interferenceUnderstand electromagnetic interference Be able to properly and safely clean a PCBe able to properly and safely clean a PC Know how to dispose of hazardous Know how to dispose of hazardous
materialsmaterials
Protect Yourself from Electric Protect Yourself from Electric ShockShock
Do not Do not disassemble a disassemble a power supplypower supply
Replace entire Replace entire power supply if power supply if defectivedefective
Protect Yourself from Electric Protect Yourself from Electric ShockShock
Do not Do not disassemble disassemble monitormonitor
Replace entire Replace entire monitor if monitor if defectivedefective
Have monitor Have monitor serviced by serviced by specially trained specially trained techniciantechnician
Watch out for protruding wires
Don’t weardangling jewelry
Shirt sleeves canget caught on sharp
edges
Protect Yourself Protect Yourself from Other Hazardsfrom Other Hazards
Inner edgesof cases
may be sharp
Avoid jewelry ofconductive metals
Fire Extinguisher TypesFire Extinguisher Types
Read the label!
Wood and paper
Flammable liquid such as gasoline
Electrical fires
Electrostatic DischargeElectrostatic Discharge
A.k.a. static electricityA.k.a. static electricity Unequal voltage potential between two Unequal voltage potential between two
objectsobjects A very small amount can ruin electronicsA very small amount can ruin electronics Humans feel only large amountsHumans feel only large amounts
Anti-Static Wrist StrapAnti-Static Wrist Strap
Clips to ground plug or
metal frame of PC case
Wraps around your wrist
Equalize the PotentialEqualize the Potential
Touch metal frame Touch metal frame of PC before of PC before touching circuit touching circuit board or chipboard or chip
Avoiding ESD in EnvironmentAvoiding ESD in Environment
Work in a room with humidity between Work in a room with humidity between 50% and 80%50% and 80%
Wear natural fibers, not syntheticWear natural fibers, not synthetic Wear rubber-soled shoes when possibleWear rubber-soled shoes when possible Stand on a ESD-dispersing floor mat if Stand on a ESD-dispersing floor mat if
availableavailable
Electromagnetic Interference Electromagnetic Interference (EMI)(EMI)
Electricity passing through cable Electricity passing through cable generates a magnetic field.generates a magnetic field.
Magnetic field can interfere with data Magnetic field can interfere with data passing through nearby cables, causing passing through nearby cables, causing data corruptiondata corruption
Preventing EMIPreventing EMI
Use EMI-shielded cables in areas where it Use EMI-shielded cables in areas where it is an issueis an issue
Use short cables when possibleUse short cables when possible Move cables so they don’t run togetherMove cables so they don’t run together Relocate the PC to a different locationRelocate the PC to a different location
Other PC HazardsOther PC Hazards
Temperature:Temperature: PCs prefer cool areas, but PCs prefer cool areas, but keep above freezingkeep above freezing
Trauma:Trauma: Don’t place PCs where they can Don’t place PCs where they can be kicked or knocked offbe kicked or knocked off
Magnets:Magnets: Magnets can ruin data stored Magnets can ruin data stored on a disk. Magnets may be found in on a disk. Magnets may be found in speakers and in some older phones, as speakers and in some older phones, as well as magnetic toolswell as magnetic tools
Cleaning Supplies for a PCCleaning Supplies for a PC
Spray cleaner designed for external Spray cleaner designed for external computer partscomputer parts
Vacuum designed for electronicsVacuum designed for electronics Denatured alcoholDenatured alcohol Cotton swabsCotton swabs Clean dry lint-free clothsClean dry lint-free cloths Can of compressed airCan of compressed air
Cleaning a MonitorCleaning a Monitor
Do not use Do not use regular glass regular glass cleanercleaner
Use glass Use glass cleaner designed cleaner designed for monitorsfor monitors
Do not spray Do not spray while monitor is while monitor is turned onturned on
Cleaning a KeyboardCleaning a Keyboard
Turn off the PC before cleaning keyboardTurn off the PC before cleaning keyboard Turn keyboard upside-down and shake Turn keyboard upside-down and shake
gently to remove loose particlesgently to remove loose particles Get between the cracks with a cotton Get between the cracks with a cotton
swab or a bit of folded paper towelswab or a bit of folded paper towel Clean keys with a cloth dampened with Clean keys with a cloth dampened with
spray cleaner designed for PCsspray cleaner designed for PCs
Cleaning a MouseCleaning a Mouse
1.1. Remove panel Remove panel on the bottomon the bottom
2.2. Remove the ballRemove the ball
3.3. Clean inside with Clean inside with alcohol and alcohol and cotton swabcotton swab
4.4. Clean ball with Clean ball with soap and water soap and water
Cleaning Circuit BoardsCleaning Circuit Boards
Use canned air to blow dust awayUse canned air to blow dust away Do not use waterDo not use water Use alcohol if liquid is necessaryUse alcohol if liquid is necessary
Cleaning an Inkjet PrinterCleaning an Inkjet Printer
Clean the outside with a cloth dampened Clean the outside with a cloth dampened with cleaner for PCswith cleaner for PCs
Run the Run the printer’s printer’s self-self-cleaning cleaning utility to utility to clean print clean print headsheads
Cleaning a Laser PrinterCleaning a Laser Printer
Clean corona wires with alcohol and Clean corona wires with alcohol and cotton swabscotton swabs
Clean outside with cloth dampened with Clean outside with cloth dampened with PC cleanerPC cleaner
Vacuum loose toner with special vacuum Vacuum loose toner with special vacuum for electronicsfor electronics
Cleaning Pad on Laser PrinterCleaning Pad on Laser Printer
Replace felt pad Replace felt pad when replacing when replacing toner if your toner if your model uses onemodel uses one
Replacement Replacement pad will come pad will come with toner with toner cartridge if cartridge if neededneeded
Disposal of Hazardous MaterialsDisposal of Hazardous Materials
Make use of your local Make use of your local hazardous waste disposal hazardous waste disposal facilityfacility Cleaning chemicalsCleaning chemicals Toner cartridgesToner cartridges MonitorsMonitors Circuit boardsCircuit boards BatteriesBatteries