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Maintenance of computer hardware is a way of taking care, repairing and replacing broken and failing computer hardware.

Maintenance is necessary on computer to avoid hardware failure or loosing valuable information and most times, hardware breaks without notice. Excess heat accelerates the deterioration of the delicate circuits in the system. Dust and dirt are the most common cause of overheating. Thus, cleaning a case is done to prevent components from overheating.

Computer hardware components attract dust, dirt, lint, carpet fibres, pet hair and smoke particles. The air from the computer cooling fan contains grime which settles on the components and causes overheating which eventually results in permanent hardware failure.

 

As a result of this, complete cleaning should be done at least once a year and if the computer is used in hot, dusty moist environment, cleaning must be performed more frequently.

 

PROCESS OF MAINTAINING COMPUTER HARDWARE

GENERAL COMPUTER CLEANING

Step 1: Always shut down, power off the system before carrying out any computer maintenance.

Step 2: Never sprays any liquid onto any computer component. Spray or pour the liquid on a lint – free cloth and wipe the PC with the cloth. Avoid product with certain cellulose which will leave streaks on your computer equipment. The use of paper towels or an old rag to clean delicate surfaces of a computer should be discouraged because paper products contain cellulose which can scratch delicate surfaces of your hardware.

 

Step 3: Use vacuum cleaner to remove dirt, dust, food and hair from keyboards.it is advisable to wear an          anti – static wrist strip to reduce the transfer of static electricity from the body to the computer.

 

Step 4: Do not apply cleaning solution including water directly to computer components.

 

Step 5: Do not use your breath to blow the dust off the components because your breath contains           moisture and the components are not built to be rust- proof.

 

Step 6: Sometimes, it is necessary to replace fans or physically wipe some computer components.

 

Step 7: Do not use anything wet or damp inside the computer case.

 

Step 8: Do not let any component or circuit board inside the computer case get wet or damp.

Step 9: Do not attempt to clean the motherboard with a cloth as it may damage the electrical components. Use a slightly moist cloth to wipe off dust and grime inside the computer case.

 

Step 10: Do not allow any drink around the machinery.

 

Step 11: Avoid vibrations and shocks.

 

TOOLS FOR CLEANING COMPUTER HARDWARE

  1. Aclean non-abrasive cloth such as microfiber, cotton, T-shirt, cotton handkerchief should be used and avoid using paper towels, dish towels, facial tissue, old rag.
  2. Portable vacuum.
  3. Appropriate cleaning solution.
  4. Cotton swabs.
  5. Foam swabs.
  6. DVD or CD-ROM cleaner.

 

EVALUATION

  1. State the steps involve in maintaining a computer hardware
  2. Mention six tools used in cleaning computer hardware

 

HOW TO CLEAN YOUR MOUSE

Step 1: Disconnect the mouse cable from the back of the computer case.

 

Step 2: Lightly dampen a cleaning cloth with isopropyl alcohol and wipe down the outside of the
computer mouse an mouse pad.

See also  COMPONENTS OF COMPUTER (OUTPUT DEVICES)

 

Step 3: Remove the bottom cover of the mouse. To this, turn it over and note the directional arrows that indicate the direction of rotation, or how to slide it off. Press with your fingers in the direction of the arrows and then turn the mouse right side up, letting the cover and mouse ball drop into your hand.

 

Step 4: Wipe the computer mouse ball with a lint-free cloth dampened with isopropyl alcohol. Put it aside.

 

Step 5: Dampen a swab with isopropyl alcohol and clean between, around and on top the keys. Change swabs as they become dirty. You may need several swabs.

 

Step 6: Replace the mouse ball and cover.

 

Step 7: Wipe the mouse cord. Lightly dampen a cleaning cloth with mild soap solution and gently pull the cord through the cloth.

 

Step 8: Plug the mouse back into the computer.

 

HOW TO CLEAN YOUR MONITOR

Step 1: Unplug the power supply cord and cable from the back of the monitor and allow it to cool for at least 20 minutes.

 

Step 2: Vacuum the outside of the monitor, particularly the cooling grooves, holes or slots in the top surface where heavy dust or other debris may have collected. Blow compressed air in short puffs at an angle to the monitor surface. The goal is to remove dust and dirt without letting anything fall into the ventilation holes.

 

Step 3: Lightly dampen a cloth with a mild soap solution and wipe down the outside plastic portions of the monitor.

 

Step 4: Clean the monitor cables and power cord while they are disconnected. Lightly dampen a cloth with mild soap solution and gently pull the cables and cords through the cloth.

 

Step 5: Check the documentation or call the manufacturer to find out if your monitor screen has anti-glare, or other delicate coatings. If so, ask the manufacturer or cleaning instructions. If it does not have these special coatings you may spray a window cleaner unto a lint-free cloth and wipe it clean. Do not spray directly onto the screen. Chemicals may drip inside the monitor and damage it.

 

Step 6: For dusty or dirty manufacturing environments use a computer dust cover to protect the monitor

 

HOW TO CLEAN A KEYBOARD

Step 1: Remove the cable from the back of the computer case.

 

Step 2: Use a vacuum cleaner to remove debris between the key. If no vacuum is available, turn the keyboard upside down and gently tap on the back side dislodge debris.

 

Step 3: Aim between the keys and compressed air to remove remaining dust and debris. Use short puffs of air applied at about a 30-45 degree angle to the keyboard surface. Alternate between blowing the keys and tapping the keyboard upside down to dislodge particles until it is clean.

 

Step 4: Lightly dampen a cloth with a mild soap solution and wipe down the outside of the keyboard. Do not spray soap solution directly onto the keyboard.

 

Step 5: Dampen a swab with isopropyl alcohol and clean between, around and on top of the keys. Change swabs as they become dirty. You may need several swabs.

Step 6: Wipe the keyboard cord. Lightly dampen a cleaning cloth with mild soap solution and gently pull the cord through the cloth. Dry the cord with a dry cloth.

See also  COMPUTER SOFTWARE

 

Step 7: For dusty or dirty manufacturing environments a good keyboard cover is recommended.

 

BATTERY CHARGING AND REPLACEMENT

This can be divided into two types which are:

  • Battery charging and replacement for laptop
  • Battery charging and replacement for PC that used UPS.

 

HOW TO CHARGE A LAPTOP BATTERY

  1. Plug your laptop into the socket and you can leave it there whenever possible.
  2. You can recharge your laptop’s battery whether the battery is fully drained or not.
  3. There is no need to fully drain your laptop’s lithium-ion battery every time you use it.
  4. Lithium-ion battery have a rapid-charging option. This option is available either on a custom tab inside the Power Option dialog box or from special battery software that came with your laptop.
  5. Do not over charge the battery, charge the battery when is getting low between 20%- 10% and do not dry the battery.

 

FOR PC THAT ARE USING UPS

  1. The battery needed to be fully charge before use at least for 4 to 6 hours.
  2. Ensure that the UPS is kept in contact o the its electrical ground at all times. Do not over load
  3. Do not let the UPS shut down by itself because it can damage battery.

 

HOW TO CLEAN A DVD DRIVE

  1. Purchase DVD laser cleaning kit. The kit is comprised of a single disc that is design to spin in your drive and remove all dust from the lens.
  2. Place the CD/DVD laser lens cleaning disc inside your DVD drive’s tray. Close the tray and allow the CD spin in the drive. As it spins, it will clear your lens of most, if not all, of the dust that is on it.
  3. Purchase a can of spray air. As an extra precaution, open your drive’s disc tray and gently spray a can of spray air into it. This will remove any of the big pieces of dust that may be lurking inside the tray.

 

GENERAL EVALUATION

  1. Explain steps for cleaning the following (i) Keyboard (ii) Monitor
  2. List steps to clean DVD drive lens.

 

WEEKEND ASSIGNMENT

  1. Maintenance is necessary on computer to avoid ……….
  2. a) hardware failure b) stealing c) invasion d) crime
  3. Excess heat accelerates the deterioration of the delicate ……… in the system. a) vacuum b) transistors c) circuits d) particles
  4. Dust and dirt are the most common cause of ……… a) leakage b) overheating c) breakage d) spooling.
  5. ……….. is used to remove dust, dirt and hair from the keyboard. a) Vacuum cleaner b) Brush c) Old rag d) Paper towels
  6. It is advisable to wear an ………… to reduce transferring static electricity from your body to the computer. a) hand glove b) anti – static wrist strip c) coat d) dust cover

 

THEORY

  1. Explain the steps in cleaning the following: i) Mouse ii) Keyboard iii Monitor iv) DVD drive lens
  2. State six tools used in cleaning computer hardware.

 

See also

DENSE VERSUS SPARSE INDEXES

INDEXES

SS 3 Data Processing Revision

APPLICATION SOFTWARE

ART OF INFORMATION PROCESSING

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