COLEGIO DE LA PURISIMA CONCEPCION
The School of the Archdiocese of Capiz
Roxas City
Self- Learning Kit in Computer 8
USING AND MAINTAINING HAND
TOOLS
(1ST Quarter – Week 1-3)
Prepared by:
CYNTHIA V. MERISCO, LPT
What Is This SLK About?
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. Using and maintaining hand tools will help you to
become a reliable computer technician.
One of the key issues associated with hand tool safety is choosing and using the
right tool. Unfortunately, many people use tools improperly at home, where they
improvise with what they have on hand. Also, many people view hand tools as simple to
use, so there is little concern for safety. In reality, a person using hand tools, no matter
what they are, should always follow safety precautions and the manufacturer’s
instructions. Injuries range from simple cuts, contusions, and abrasions to amputations,
fractures, and punctures.
What Will You Learn from
This SLK?
At the end of this module, you are expected to:
1. Identify tasks to be undertaken properly;
2. Identify and select appropriate hand tools according to the task requirements;
3. Check appropriate hand tools for proper operation and safety;
4. Identify and mark unsafe or faulty tools for repair according to standard company
procedure;
4. Use tools according to tasks undertaken;
5. Always observe all safety procedures in using tools and use appropriate PPE; and
6. Report malfunctions, unplanned or unusual events to the supervisor; and
7. Do not drop tools to avoid damage; carry out routine maintenance of tools according
to standard operational procedures, principles, and techniques.
Let’s See What You
Already Know
Before you begin with the module proper.
Take this test to find out how much you already know about our topic.
ACTIVITY 1
Directions: Fill in the blanks. Choose the correct words from the box below. Write
your answers on the blank provided.
1. The purpose of an antistatic wrist strap is to ________ the electrical charge between
you and the equipment.
2. Turn the screwdriver _________ to tighten the screw
3. Turn the screwdriver ________________ to loosen the screw.
4. Use a ________ head screwdriver with crosshead screws.
5. On electrical components, an excessive build-up of dust will act like a _________
and trap the heat.
6. When compressed air is used to clean inside the computer, the air should be blown
around the components with a minimum distance of ______ inches from the nozzle.
7. Pencils should not be used inside the computer to change the setting of switches or
to pry off jumpers because the tip contains _____ which can act as a conductor and
may damage the computer components.
8. To clean the screens of CRT monitors, dampen a soft, clean, lint-free cloth with
_______ water and wipe the screen from top to bottom.
9. Clean the contacts on components with _________ alcohol.
10. Use a __________ to loosen and tighten bolts that have a hexagonal (six-sided)
head.
LIST OF WORDS
equalize
philips
insulator
isopropyl
counterclockwise
distilled
hex driver
clockwise
four
lead
ACTIVITY 2
Direction: Conduct a maintenance activity on the given hand tools. Write the following
maintenance activity you will be going to perform on the following tools, you can write
more than one maintenance activity.
1. Clean
2. Magnetize
3. Lubricate
4. Calibrate
5. Change batteries if drained
6. Sharpen
TOOLS
1. Flat Head Screwdriver
2. Philips Head Screwdriver
3. Torx Screwdriver
4. Hex Driver
5. Needle-Nose Plier
6. Wire Cutter
Turn to next page to begin the lesson.
MAINTENANCE ACTIVITY
Clean and magnetize
Let’s Read
Definition of Terms
Computer Chassis the enclosure or box that contains most of the components of a
computer.
Equipment physical components that constitute a computer system, including monitors,
keyboards, printers, modems, scanners, pointing devices, and other computer
peripheral equipment, cables, servers, and routers. "Computer equipment" also includes
digital cameras and computer software.
Tool a handheld device that aids in accomplishing a task.
PPE (Personal Protective Equipment) is an equipment worn to minimize exposure to
hazards that cause serious workplace injuries, illnesses and accident.
Nozzle a projecting part with an opening, as at the end of a hose, for regulating and
directing a flow of fluid.
Toolkit a set of tools designed to be used together or for a particular purpose.
Insulation a material that reduces or prevents the transmission of heat or sound or
electricity.
PROPER TOOL SELECTION
A tool is a handheld device that aids in accomplishing a task. Tools range from a
traditional metal cutting part of a machine to an element of a computer program that
activates and controls a particular function.
Preparing for the task to be undertaken includes proper tool selection.
Select the best tool by knowing and understanding in details the scope of work to be
accomplished, and by planning for the scope taking into account the sequence of tasks.
Selecting the best tool for each task requires training in the proper use of the tools, field
experience in their safe use, and following the manufacturer’s guidance and instructions
for that specific tool.
When obtaining the tool all the associated tooling and consumable parts, as
recommended by the manufacturer, must be included. In addition, related consumable
parts must also be selected and used according to their manufacturer’s instructions.
Safe Use of tools
Once selected, use the tool for the purpose for which it was designed. Not all tools
come with detailed instructions, but there are those that do spell out the safety ―Do’s
and Don’ts‖ for your safety. If there are set-up/use options, operator judgment must
always be based on what is the safest way to use the tool. Remember that Safety is the
first Priority.
Environmental Safety and Health Program requires the following:





All tools be kept in good condition with regular maintenance
The right tool be used for the job
Each tool be examined before use; damaged or defective tools NOT to be used
Tools be operated according to manufacturer’s instructions
The right protective equipment for the tool and activity be used
COMPUTER HARDWARE TOOLS
Hardware tools are grouped into these four categories:
●
●
●
●
Electro-Static Discharge (ESD) tools
Hand tools
Cleaning tools
Diagnostic tools
Hand Tools and its uses
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 build-up 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.
Tool
Description
Anti-static wrist strap – a piece of safety gear use to
prevent build-up of static electricity to sensitive electronic
part that may cause damage or safety issue to computer
equipment.
Anti-static mat – safeguards an individual or piece of
equipment like a Personal Computer from an electrostatic
discharge (ESD). This is useful when working on computer
components. Just place the Anti-static mat under the
equipment.
Hand Tools
A hand tool is a device for performing work on a material or a physical system using
only hands rather than a motor.
Tool
Description
Flat head screwdriver – used to loosen or tighten
negative slotted screws.
Philips head screwdriver – used to drive or fasten
positive slotted screws
Torx screwdriver - used to loosen or tighten screws that
have a star-like depression on the top, a feature that is
mainly found on laptop.
Hex driver – sometimes called a nut driver, is used to
tighten nuts in the same way that a screwdriver tightens
screws.
Photo from web
Needle-nose plier – used for holding, bending and
stretching the lead of electronics component or connecting
wire.
Wire cutter – used to strip and cut copper, brass, iron,
aluminium, and steel wire
Tweezers – used to manipulate small parts.
Part retriever – used to retrieve parts from location that
are too small for your hand to fit.
Flashlight – used to light up areas that you cannot see
well.
Photo from web
Soldering iron - used to join two or more metal
conductors with the support of soldering lead melted
around it.
Photo from web
Soldering Stand – made out of metal and comes with a
cleaning sponge to clean the soldering irons tip.
Photo from web
Desoldering Tool – is used to unsolder unwanted parts or
component in the circuit with the support of soldering
pencil.
Photo from web
Soldering Lead – is a fusible metal alloy used to create a
permanent bond between metal work pieces? Solder is
melted in order to adhere to and connect the pieces after
cooling.
Photo from web
Crimping tool – is a device used to conjoin two pieces
of metal by deforming one or both of them to hold each
other. The result of the tool's work is called a crimp.
network cables and phone cables are created using a
crimping tool
Photo from web
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.
Tool
Description
Lint-free cloth – used to clean different computer
components without scratching or leaving debris.
Brush – used to remove accumulated dust on computer
peripherals and components contact.
Photo from web
Compressed air – used to blow away dust and debris
from different computer
parts without touching the
components.
Cable ties – used to bundle cables neatly inside and
outside of a computer.
Parts organizer – used to hold screw, jumpers, fasteners
and other small parts and prevents them from getting
mixed together.
Erase – used to eliminate foreign debris that stick from
component contact, like Random Access Memory (RAM)
and HDD connector.
Photo from web
Diagnostic Tools
Computers are easier to use and more dependable with each new generation of
hardware and operating system update, but that doesn't mean they're problem-free.
Here's the most popular tools for diagnosing your computer problems:
Tool
Description
Multi-tester– used to test the integrity of circuits and the
quality of electricity in computer components.
LAN Tester – for RJ11, 12, 45 & BNC w/ Remote Unit This
ergonomic tester is designed to test most
network cable wiring. You can either
conduct an auto or manual test.
Photo from web
Loopback Adapter – used to test the functionality of
computer ports.
PROPER USE OF TOOLS
As a computer Technician, proper use of hand tools within the toolkit should be
observed when repairing or building a computer.
1. Anti-Static Wrist trap
a. Connect the cable to the metal chassis of the
computer.
b. Wrap the strap around your wrist.
c. The connection will keep your body at the same
voltage (potential) as the computer.
d. 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.
2. Anti-Static Mat
a. Lay the computer on the mat.
b. Connect the computer to the mat with the cable.
c. Connect the mat to a reliable electrical ground with its
cable.
d. Now, you and the computer are at ground potential.
3. Flat Head screwdriver- Use a flat head screwdriver when you are working with
a slotted screw. Do not use a flat head screwdriver to remove a Phillips head
screw. Never use a screwdriver as a pry bar. If you cannot remove a component,
check to see if there is a clip or latch that is securing the component in place.
4. Phillips head screwdriver- Use a Phillips head screwdriver with crosshead
screws. Do not use this type of screwdriver to puncture anything. This will
damage the head of the screwdriver.
5. Screw- Match each screw with the proper screwdriver. Place the tip of the
screwdriver on the head of the screw. Turn the screwdriver clockwise to tighten
the screw and counter clockwise to loosen the screw.
6. Hex driver- Use a hex driver to loosen and tighten bolts that have a hexagonal
(six-sided) head. Hex bolts should not be over-tightened because the threads of
the bolts can be stripped. Do not use a hex driver that is too large for the bolt that
you are using.
7. Part retriever, Needle-nose pliers, or tweezers- The part retriever, needlenose pliers, and tweezers can be used to place and retrieve parts that may be
hard to reach with your fingers. Do not scratch or hit any components when using
these tools. Make sure to apply lubricants after using them to avoid becoming
rusty and dull.
8. Soldering Iron and Stand- Soldering iron heats very quick, avoid touching the
metal parts. After using the Soldering Iron, place it on the stand to avoid burning
and damage things.
9. Crimping Tool- Inspect the tool before its use to make sure to foreign substance
sticking to it. Check the spring resistance by squeezing and releasing the tool
handle. Be careful with the blade, it is very sharp.
10. LAN Tester and Multi-Tester- To maintain its accuracy of measurement,
regularly check its reading and functionality if something is not accurate, check
its battery and LED lights.
Proper Use of Cleaning Materials
Keeping computers clean inside and out is a vital part of a maintenance program. Dirt
can cause problems with the physical operation of fans, buttons, and other mechanical
components. On electrical components, an excessive build-up of dust will act like an
insulator and trap the heat. This insulation will impair the ability of heat sinks and
cooling fans to keep components cool, causing chips and circuits to overheat and fail.
1. Computer Cases and Monitors - Clean computer cases and the outside of monitors
with a mild cleaning solution on a damp, lint-free cloth. Mix one drop of dishwashing
liquid with four ounces of water to create the cleaning solution. If any water drips inside
the case, allow enough time for the liquid to dry before powering on the computer.
2. LCD & LED Screens- The LED and LCD screen is not intended to get wet. Do not
use ammoniated glass cleaners or any other solution on an LCD screen, unless the
cleaner is specifically designed for the purpose. Harsh chemicals will damage the
coating on the screen. There is no glass protecting these screens, so be gentle when
cleaning them and do not press firmly on the screen.
3. CRT Screens- To clean the screens of CRT monitors, dampen a soft, clean, lint-free
cloth with distilled water and wipe the screen from top to bottom. Then use a soft, dry
cloth to wipe the screen and remove any streaking after you have cleaned the monitor.
Clean dusty components with a can of compressed air. Compressed air does not
cause electrostatic build up on components. Make sure that you are in a well-ventilated
area before blowing the dust out of the computer. A best practice is to wear a dust mask
to make sure that you do not breathe in the dust particles
1. Component Contacts- Clean the contacts on components with isopropyl alcohol.
Do not use rubbing alcohol. Rubbing alcohol contains impurities that can damage
contacts. Make sure that the contacts do not collect any lint from the cloth or cotton
swab. Blow any lint off the contacts with compressed air before reinstallation.
2. Keyboard- Clean a desktop keyboard with compressed air or a small, hand-held
vacuum cleaner with a brush attachment.
3. Mouse- Use glass cleaner and a soft cloth to clean the outside of the mouse. Do not
spray glass cleaner directly on the mouse. If cleaning a ball mouse, you can remove
the ball and clean it with glass cleaner and a soft cloth. Wipe the rollers clean inside
the mouse with the same cloth. Do not spray any liquids inside the mouse.
IMPORTANT REMINDERS IN THE PROPER USE OF TOOLS
1. If excessive force is needed to remove or add a component, something is probably
wrong. Take a second look to make sure that you have not missed a screw or a
locking clip that is holding the component in place. Refer to the device manual or
diagram for additional information.
2. Some tools are magnetized. When working around electronic devices, be sure that
the tools you are using have not been magnetized. Magnetic fields can be harmful to
data stored on magnetic media. Test your tool by touching the tool with a screw. If
the screw is attracted to the tool, do not use the tool.
3. Pencils should not be used inside the computer to change the setting of switches or
to pry off jumpers. The pencil lead can act as a conductor and may damage the
computer components.
4. When compressed air is used to clean inside the computer, the air should be blown
around the components with a minimum distance of four inches from the nozzle. The
power supply and the fan should be cleaned from the back of the case.
5. Before cleaning any device, turn it off and unplug the device from the power source.
6. Never use a standard vacuum cleaner inside a computer case. The plastic parts of
the vacuum cleaner can build up static electricity and discharge to the components.
Use only a vacuum approved for electronic components.
TOOL AND EQUIPMENT MAINTENANCE
All tools and equipment must be properly maintained so that workers are not
endangered. Preventive maintenance is the systematic care and protection of tools,
equipment and machines in order to keep them in a safe, usable condition, limit
downtime and extend productivity. We must always be aware that maintenance tasks
themselves are potentially hazardous and can result in injury.
1. Obtaining a copy of the maintenance schedule recommended by the manufacturer.
2. Ensuring that maintenance is performed as required.
3. Ensuring that the person(s) performing the maintenance are competent or license
professional.
4. Retaining records of maintenance/service conducted.
5. Specifying who is responsible for overseeing equipment maintenance and where the
records are kept.
6. Putting in a system for removal and tagging of damaged or defective tools and
equipment.
PROPER STORAGE OF TOOLS, PARTS, AND EQUIPMENT
To ensure that tools and equipment remain in good condition and last for a long time,
store them properly. Properly stored tools and equipment will be easy to find when
needed and are less likely to be lost.
Good practices include:
● parts should be properly stored and labelled (Figure 1);
● tools should be properly placed on the board, and labelled (Figure 2). Consider
drawing the shapes of the tools on the board so that they always get put back in
the same position;
● use bins for storing small parts (Figure 3); and
● consider making an individual (or individuals) responsible for the good
maintenance of tools and parts.
Figure 1.
Figure 2.
Figure 3.
Benefits
● Tools and parts are kept in good condition and are easy to find
● Costs are reduced.
● Productivity is increased because time is not wasted looking for tools, parts and
equipment.
● Workshop staff develop a sense of responsibility and pride in their work.
SAFETY PRECAUTIONS
PPE (Personal Protective Equipment) - it refers to protective clothing, helmets,
goggles, or other gear designed to protect the wearer's body or clothing from injury by
electrical hazards, heat, chemicals, and infection, for job-related occupational safety
and health purposes.
It is important that students and teachers during their laboratory period should be
required to use personal protective equipment. Some of these are:
Goggles - a large spectacles, with
shields around the rims, for protecting
the eyes from dust, excessive light,
wind, etc.
Rubber sole - a special type of shoes
used to prevent electrical shock and
for waterproofing and insulating
purposes.
Apron - a garment worn over the front
of the body as a protection for one’s
cloth.
Face mask - a covering for the face to
prevent the inhaling or absorbing dust
and other chemicals
Gloves - the covering material with a
separate sheath for each finger used
for hand protection.
Time to check your understanding. Ready?
Kindly turn to next page.
Review of Lesson!!!
ACTIVITY 3
Direction: Name the tools on the boxes and identify its category (ESD
tool, Hand tool, Cleaning Tool, Diagnostic Tool). Write your answer on a separate sheet
of paper.
Picture
1.
2.
3.
4.
Name of the Tool
Category
5.
6.
7.
8.
9.
10.
11.
12.
Assessment
Instruction: Select the letter only of the correct answer and write it on a separate
sheet of paper.
1. Which tool is used for hardware to stand on to prevent static electricity from building
up?
A.
anti-static mat
C. Philips head screwdriver
B.
hex driver
D. wire cutter
2. Which tool is used to loosen or tighten cross-head screws?
A.
anti-static mat
C. Philips head screwdriver
B.
hex driver
D. wire cutter
3. Which tool is sometimes called a nut driver, which is used to tighten nuts in the
same way that a screwdriver tightens screws?
A.
anti-static mat
C. Philips head screwdriver
B.
hex driver
D. wire cutter
4. Which tool is used to strip and cut wires?
A.
anti-static mat
C. Philips head screwdriver
B.
hex driver
D. wire cutter
5. Which tool is used to retrieve parts from location that are too small for your hand to
fit?
A.
part retriever
C. cable ties
B.
lint-free cloth
D. flat head screwdriver
6. Which tool is used to clean different computer components without scratching or
leaving debris?
A.
part retriever
C. cable ties
B.
lint-free cloth
D. flat head screwdriver
7. Which tool is used to bundle cables neatly inside and outside of a computer?
A.
part retriever
C. cable ties
B.
lint-free cloth
D. flat head screwdriver
8. Which tool is used to loosen or tighten slotted screws?
A.
part retriever
C. cable ties
B.
lint-free cloth
D. flat head screwdriver
9. Which tool is used to loosen or tighten screws that have a star-like depression on
the top, a feature that is mainly found on laptop?
A.
anti-static mat
C. Philips head screwdriver
B.
Torx screwdriver
D. wire cutter
10. Which tool is used to blow away dust and debris from different computer parts
without touching the components?
A.
anti-static mat
C. compressed air
B.
hex driver
D. wire cutter
11. What tool is used to test integrity of circuit the quality of electricity in computer
components?
A.
multi-meter
C. loopback adapter
B.
LAN tester
D. brush
12. What tool is used to join two or more metal conductors with the support of soldering
lead melted around it?
A.
soldering stand
C. soldering lead
B.
soldering iron
D. soldering pump
13. Which is not a proper use of tool?
A.
Use the proper type and size of screwdriver by matching it to the screw
B.
Do not over tighten screws because the threads may become stripped.
C.
Use compressed air to clean heat sinks.
D.
Use Rubbing alcohol and lint-free swabs to clean RAM
14. Which in the subsequent isn’t a good practice in storing tools, parts and
equipment?
A.
Use bins for storing small parts
B.
Tools should be properly placed on the board, and labelled
C.
You can leave the tools at the workplace so that it can be easy to find
D.
Consider making an individual (or individuals) responsible for the good
Maintenance of tools and parts.
15. Which in the subsequent is not a general requirements for tools and equipment
maintenance?
A.
Ensuring that the person(s) performing the maintenance is your relative
B.
Retaining records of maintenance/service conducted
C.
Set up a system for removal and tagging of damaged or defective tools and
equipment
D.
Ensuring that maintenance is performed as required
E-CONNECT:
https://www.academia.edu/29846618/LM_Cookery_Grade_10 - retrieved September 6,
2020
https://www.google.com/search?q=PICTURE+OF+NUTRITIVE+VALUE+OF+EGG+WIT
H+LABEL&tbm=isch&ved=2ahUKEwjpqanZ2dbrAhXMx4sBHeTrC7YQ2cCegQIABAA&oq=PICTURE+OF+NUTRITIVE+VALUE+OF+EGG+WITH+LABEL&gs_l
cp=CgNpbWcQA1C9zQVY6O0FYJXzBWgAcAB4AIABjAKIAfgLkgEGMC4xMC4xmAEA
oAEBqgELZ3dzLXdpei1pbWfAAQE&sclient=img&ei=S_lVX6nYBsyPr7wP5NevsAs&bih
=722&biw=1536#imgrc=3ODE5REhUYJZpM – retrieved September 7, 2020
https://www.bwc.ohio.gov/downloads/blankpdf/safetytalk-handtools.pdf