- Fire Extinguisher ClassificationsA
- Ordinary CombustiblePaperWoodplastics cardboard
- Fire Extinguisher ClassificationsB
- Flammable LiquidsGasolineKeroseneOrganic solvents
- Fire Extinguisher ClassificationsC
- Electrical Equipment
- Fire Extinguisher ClassificationsD
- Combustible Metals
- Blackout
- complete loss of AC Caused by: Blown fusedamaged transformerdowned power line
- Brownout
- Reduced voltage level of ACOccurs when:line voltage drops below 80%overloading
- Chip3
- Chemicals Hazard Information and Packaging
- Cleaning LCD Screens
- Do not use ammoniated glass cleaners unless specifically designed for lcds
- CRTs may contain 4lbs of what?
- lead
- Defrag
- Optimizes space on HD
- Disk Cleanup
- Clears Space by searching for files that can be safely deleted
- Disk Managemnet
- a system utility used to manage HDs and partitionsIncludes:initializing diskscreating partitionsformatting partitions
- Disk managment tools
- help detect and correct disk errorsprepare a disk for data storageremove unwanted files
- EPA
- Envirnmental protection agency
- fdisk or disk management
- creates or deletes partitions of HD
- Firewall
- Protects against unauterized communications
- Format
- Prepares HD to store information
- How do you clean a heatsink
- compressed air
- how do you clean a keyboard
- hand held vacuum with brush attachment
- How do you determine if a material is classified hazardous?
- Contact Occupational Safety and Health Administration (OSHA)
- How many volts must build up before it is felt?
- 3000v
- How many volts to cause pain or make noise
- 10000v
- How many volts will damage computer equipment?
- 30v
- Internet reference tools
- Internet search engines News groups Manufacturer FAQs Online computer manuals Online forums and chat Technical websites
- MSDS
- Material Safety and data sheet
- Noise
- Interferance (unclean power)
Causes:Generators lighting - OSHA
- Occupational Safety and Health Administration
- P-A-S-S
- P - Pull the pinA - Aim at the base of the fire not at the flamesS - Squeeze the leverS - Sweep the nozzle from side to side
- Personal reference tools include
- troubleshooting guidesmanufacturer manualsquick ref guidesrepair journal
- Power Protection Devices
- Protect against power fluctuations
- Power Surge
- Dramatic increase in voltage above the normal flow of electrical current. Can last a few nanoseconds or one billionith of a second
- Scandisk or CHKDSK
- checks integrity of files and folders by scanning surface of the disk for physical errors
- SFC does what
- command line tool that scans the OS critical files and replaced the corrupted ones
- Should you use magnatized tools on a compute?
- NO
- Spike
- Short spike in voltage exceeds 100% normal
charactoristics:Power comes back on lighting strike - Standby Power Supply (SPS)
- helps protect against voltage drops below normal level. Other things:The battery provides DC power to a power inverter, which converts it to AC power for the computer.
- Surge Suppressor
- Protects against surges or spikes. Diverts extra voltage to ground
- Uninterruptible power supply (UPS)
- Provides electrical power to computer or device
- UPS
- Uninterruptible Power supply
- What are 2 diagnostic tools used on computers?
- digital multimeterloopback adaptor
- What are the 2 ESD tools?
- Anti static wrist strapAnti static mat
- What are the reasons computers are discarded?
- Parts or components begin to fail more frequently as the device ages.The computer becomes obsolete for the application for which it was originally intended. Newer models have improved features.
- What does a static mat do?
- protects computer equipment by preventing static electricity from accumulating on the hardware or technician.
- What does a UPS do when power is lost
- It is constantly recharging while the UPS is in use. Supplies quality power during brownouts and and blackouts.
- What does an antistatic strap do?
- equalize the charge between you and the equipmentA conductor that connects your body to the equipment that you are working on.
- What does Chip3 require
- chemical suppliers to safely package and transport dangerous chemicals and to include a data sheet with the product.
- what does dust do to computer components
- acts as an insulator and traps heat
- What does MSDS contain
- The name of the material The physical properties of the material Any hazardous ingredients contained in the material Reactivity data, such as fire and explosion data Procedures for spills or leaks Spec
- What does OSHA require
- All hazardous materials must be accompanied by a MSDS when transferred to a new owner
- What does the UPS do with the OS?
- Allows UPS to safely shutdown the computer
- What don't you do with a power supply or CRT?
- use a static strap
- What is a msds
- summarizes information about material identification including: hazardous ingredients that can affect personal healthfire hazardsfirst aid requirementschemical reactivity and incompatibilityspill leak and disposa
- What is the hazardous materials of the computer called?
- Toxic Waste
- What makes the Standby Power Supply (SPS) not as reliable as the UPS
- Because of the time it takes to switch over to the battery.If the switching device fails, the battery will not be able to supply power to the computer.
- What rare earth metals to batteries contain?
- Batteries from portable computer systems may contain:l leadcadmiumlithium alkaline manganesemercury
- What should be used to clean component contacts
- isopropl alchohol. Do not use rubbing alcohol. Blow off with compressed air to remove any remnents of lint from q tip
- What should you do before cleaning any device?
- Turn it off and unplug
- What should you do before repairing equipment?
- Make sure tools are in good conditionCleanRepairReplaceAnything that isn't in good working condition
- what should you do when disposing of solvents and aerosols
- contact local sanitation company
- What should you use to clean a computer case and monitor?
- damp lint free clothone drop of dishwashing liquid with four ounces of water
- What should you use to clean a mouse
- glass cleaner and soft cloth
- What type of clothing shouldn't you wear when working on computers?
- silkpolyesterwool
- What type of hand tools are used on computers?
- small hand tools
- when working at a workbench what should you do?
- ground the workbench and the antistatic floor mat.
- Why shouldn't you use pencils for dip switches etc?
- Pencil lead can act as a conductor and may damage computer components.
- Windows XP Boot Disk
- Repairs corrupted fileswindows system filesrestore damaged or lostreinstall the OS Third party software is also avialable that does the same thing
- Windows XP Security Center
- Checks all security settingsContinously checks to make sure the firewall and antivirus are runningautomatic updates
