TLE ICT
Name: ___________________________ __ Grade Level: _____
Section: ________________________________ Date: ____________
LEARNING ACTIVITY SHEET
Lesson2: Use of Tools in PC Hardware Servicing
To complete hardware repairs, it is important to have a toolkit that should contain all of the necessary tools. As you gain
experience, you will learn which tools to have available for different types of jobs. Hardware tools are grouped into
these four categories:
Electro-Static Discharge (ESD) tools
Hand tools
Cleaning tools
Diagnostic tools
Electro-Static Discharge (ESD) Tools
Static electricity is easily generated by friction on carpets, tile flooring, clothing, hair, fabric, and etc. The friction of
moving air alone will charge suspended particles and cause the buildup of static electrical charges on people and objects
in the environment. Grounded antistatic work mats used with antistatic wrist straps provide the most basic means for
the controlled discharge of electrostatic electricity.
Examples of ESD Tools:
Anti-static wrist strap – Used to prevent ESD damage to computer equipment.
Anti-static mat – Used to stand on or place hardware on to prevent static electricity from building up.
Hand Tools
A hand tool is a device for performing work on a material or a physical system using only hands. Hand tools can be used
manually or electrically powered, using electrical current. Examples of Hand Tools are as follows:
Cleaning Tools
Having the appropriate cleaning tools is essential when maintaining or repairing computers. Using these tools ensures
that computer components are not damaged during cleaning. Examples:
Diagnostic Tools
Computers are easier to use and more dependable with each new generation of hardware and operating system update,
but that does not mean they are problem-free. Here are the most popular tools for diagnosing your computer problems:
Proper Use of ESD Tools
Proper Use of Antistatic Wrist Strap
1. Connect the cable to the metal chassis of the computer.
2. Wrap the strap around your wrist.
3. The connection will keep your body at the same voltage (potential) as the computer.
4. Attach the wire on the same side of the equipment as the arm wearing the antistatic wrist strap to keep the
wire out of the way while you are working.
CAUTION:
Never wear an antistatic wrist strap if you are repairing a monitor or CRT.
Proper Use of Antistatic Mat
1. Lay the computer on the mat.
2. Connect the computer to the mat with the cable.
3. Connect the mat to a reliable electrical ground with its cable.
4. Now, you and the computer are at ground potential.
Proper Use of Hand Tools
1. Use the proper type and size of screwdriver by matching it to the screw.
2. Do not over tighten screws because the threads may become stripped.
CAUTION: If excessive force is needed to remove or add a component, something may be wrong.
CAUTION: Magnetized tools should not be used around electronic devices.
CAUTION: Pencils should not be used inside the computer because the pencil lead can act as a conductor and may
damage the computer components.
Proper Use of Cleaning Materials
To clean computers and accessories:
1. Use mild cleaning solution and lint-free cloth to clean computer cases, outside of monitor, LCD screen, CRT screen and
mouse.
2. Use compressed air to clean heat sinks.
3. Use Isopropyl alcohol and lint-free swabs to clean RAM.
4. Use hand-held vacuum cleaner with a brush attachment to clean a keyboard.
CAUTION: Before cleaning any device, turn it off and unplug the device from the power source.
Task 1: Name a Tool
Directions: Name the tools presented below. Write your answers on the space
provided before each tool.
