Lesson 4 Chapter 1 - Cleaning and Maintenance Procedures Flashcards
What are 5 safe liquid cleaning compounds you can use for maintenance?
- Clean water or soapy water solution
- Denatured alcohol (or isopropyl alcohol 91%)
- Glass cleaner
- Water and vinegar (1 part vinegar, 4 parts water)
- Commercial cleaning products
What’s an important warning when cleaning with clean or soapy water?
Don’t let any water drip onto components or circuit boards, and let it dry completely before reconnecting anything to the computer or it can cause short-circuiting (water is an electrical conductor)
What’s an important warning when cleaning with denatured alcohol?
Never use alcohol to clean motors or on rubber drive belts as it dissolves the motor lubrication in motor bearings and using it on a rubber belt can make it stretch and become brittle
What’s an important warning when cleaning with glass cleaner?
Never use glass cleaner on a monitor screen it can damage the special coating, especially if it has ammonia as it can quite literally melt older LCD screens
What are 6 cleaning tools a tech should have?
tails, volts, breathe, micro, horse
- Phillip’s head
- Multimeter
- Compressed air
- Lint-free cloths
- Small soft-bristled brush and swabs
- Non-static vacuum
Compressed air comes in which 3 forms?
- Compressed CO2
- Liquid propellant
- Electric dusters without harmful propellants and doesn’t create condensation
What are 3 rules when using compressed air?
jordin, reach, twerk
- Never breathe it in! It can kill you
- Keep the can upright with liquid propellant, as tilting it can cause the liquid to squirt out and can cause frostbite and irreparable damage to the computer
- Never shake the can, it doesn’t need it
What’s a warning when using dry dusting products?
swiffer
Don’t use dry dusting products (such as a Swiffer wipe) because they clean using static charged cloths which could fry your components
What’s a warning when using rubber pencil erasers?
pepsin, eye, rub
Never use rubber pencil erasers as they can contain acids that can destroy contacts and may rub the metal coating off the contacts
What’s a type of vacuum cleaner you should never use? Why?
Never use a regular household vacuum as they can create static electricity
For regular cleaning of the exterior of computer, monitor, and peripherals use? (2)
Water and a lint-free cloth, dampened not soaked
Compressed air
For grime buildup on the exterior of computer, monitor, and peripherals use?
Soapy water
For tougher cleaning chores (ink, crayon, tape adhesive) on the exterior of computer, monitor, and peripherals use? (3)
solution, diluted, cc
- Vinegar and water solution
- Denatured alcohol diluted with water
- Commercial cleaner
How do you clean a mouse’s recessed lens?
With denatured alcohol and a lint-free swab or lint-free cloth
Can you shake a laptop keyboard upside down?
No, you should not shake a laptop
What are 4 steps to cleaning a keyboard?
taylor swift, horse, fold, solution
- Turn the keyboard upside down over a trash can
- Use compressed air and brush to loosen debris
- Fold a paper towel moistened with alcohol to clean grime from keys
- Soapy water or other solution for sticky messes (disconnect keyboard first)
What are some warnings to keep in mind when cleaning a keyboard? (3)
taylor swift, dc, air
- Always unplug the keyboard before cleaning it (especially with any liquids)
- Let the keyboard dry before plugging it in
Best 2 ways to clean a monitor screen?
- Vinegar and water
- Commercial cleaning solutions specifically for monitors
Warnings when it comes to cleaning monitors? (3)
gen pop, wind, direct
- Don’t use general-purpose cleaning solutions on monitor screens, they’re for exterior plastics
- Don’t use glass cleaners (especially with ammonia)
- Don’t spray the solution directly onto the screen
What should you do immediately after touching contact pins, connectors, and sockets?
Wipe them off with denatured alcohol and a lint-free swab
When cleaning the inside of a case with air, what should you focus on? (7)
body, card, jordin, power in, out, door, sink
- Motherboard
- Expansion card adapters
- Air vents
- Power supply intake
- Exhaust fan
- Optical drive door openings
- CPU heat sink
What are 2 warnings when cleaning the inside of a computer case in regards to the fans and PSU?
if you touch a…., spray the…
If you touch a fan, clean it immediately
Spray the power supply with the compressed air straw at an angle to direct dust outwards not further in
