The document discusses the proper use and identification of various common hand tools used in computer assembly and repair, including screwdrivers, pliers, wire cutters, and tweezers. It emphasizes the importance of using the correct tool for each task and following safety procedures to prevent damage to equipment and injury. A variety of hand tools are demonstrated along with best practices for their safe and effective use in computer maintenance and troubleshooting activities.

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2. LESSON OBJECTIVES:
• identify different types of hand tools used in computer assembly
and repair tasks, as well as understand their functions and
significance.
• demonstrate proper handling and usage of hand tools by actively
participating in hands-on practice sessions under supervision.
• appreciate the importance of hand tools in technology and
livelihood education, recognizing their role in ensuring efficiency,
safety, and quality in computer-related tasks, and reflecting on
how these skills can be applied in real-life situations.

3. Identifying and Selecting Different Types of
Hand Tools
•Hand tools are useful for day-to-day activities.
There are various types of tools that can be used
to perform different types of task. Most devices
are flexible and some have specific functions.

4. Preparing Hand Tools
• Before you do some repair work on your PC — in fact,
before you even think about taking off the cover of
your computer, we suggest that you provide yourself
with a computer tool kit. The use of proper hand tools
and equipment is very important in computer
applications. A successful trouble-shooter must have
knowledge of tools and equipment.

5. Preparing Hand Tools
•A hand tool is a device for performing work on a
material or a physical system using only hands.
•The hands tools can be manually used employing
force, or electrically powered, using electrical
current.

6. Hand Tools
Flat head screwdriver
-used to loosen or tighten
slotted screws.

7. Hand Tools
Phillips head screwdriver
- used to loosen or tighten
cross-head screws

8. Hand Tools
Torx screwdriver used to
loosen or tighten screws that
have a star-like depression on
top, a feature that is mainly
found on laptop.

9. Hand Tools
Hex driver sometimes called a
nut driver, is used to tighten nuts
in the same way that a
screwdriver tightens screws.

10. Hand Tools
Needle Noise Plier – used to hold
small parts

11. Hand Tools
Wire cutter – use to strip and cut
wires.

12. Hand Tools
Tweezers – used to manipulate
small parts.

13. Hand Tools
Part retriever – used to retrieve
small parts that are too small for
your hands to fit.

14. Faulty or Unsafe Hand Tools
Hand tools include a wide variety of non-
powered devices, such as wrenches, pliers,
hammers and screwdrivers. Such devices may
seem harmless, but they cause a lot of injuries.
The following are hand tools related to safety
procedures.

15. General hazards:
• The two most common hazards associated with the use of hand
tools include misuse and improper maintenance.
• Misuse occurs when a hand tool is being used for something
other than its intended purpose. An example of misuse is when
we use a screwdriver as a chisel, which could cause the tip to
break and strike someone.
• Improper maintenance causes hand tools to deteriorate
in an unsafe condition. A good example is when include broken
wooden handles that cause the head of the tool to fly off or
mushroomed heads that can break upon impact.

16. General hazards:
• Place hazardous devices in a safe environment. For
example, use non-sparkling devices in the
presence of flammable vapors and dust. Insulated
equipment with appropriate ratings must be used
for electrical work.

17. Personal Protective Equipment:
• The type of Personal Protective Equipment required
for the use of tools depends on the nature of the
task. At a minimum, eye protection should always
be worn.
• The use of hand gloves protection can also be
necessary to provide protection against wounds,
abrasion, and repetitive impacts.

18. Do’s and Don’ts in Using Hand Tools
Pliers:
• Do not increase the handle length of the pliers
in order to gain more power. Use the larger
pair of pliers or bolt cutters.
• Do not replace the pliers with the wrench
when you turn the bolts and nuts. Pliers
cannot properly grip and slip these items.
• Never use pliers as a hammer on your handle.
Such abuses are likely to cause cracks or
breaks.

19. Do’s and Don’ts in Using Hand Tools
Pliers:
• Cut the hardened wire only
with pliers designed for this
purpose.
• Always make a right angle cut.
Never rock from side to side or
bend the wire back and forth
against the cutting edge.

20. Do’s and Don’ts in Using Hand Tools
Screwdrivers:
• Never use a screwdriver as a
pry bar, a chisel, a punch stirrer
or a scraper.
Pry bar
chisel
scraper

21. Do’s and Don’ts in Using Hand Tools
Screwdrivers:
• Always use a
screwdriver tip that
best fits the screw
slot properly.
• Throw the
screwdrivers away
with damaged or
rusty handles.

22. Do’s and Don’ts in Using Hand Tools
Screwdrivers:
• Never use pliers on the
screwdriver for additional
leverage. Only use specially
designed wrench or
screwdrivers to accept
them.

23. Do’s and Don’ts in Using Hand Tools
Utility Knives/ Blades:
• Always use a sharp blade. Dull blades require more
force, so they are more likely to slip. Replace the blade
when the blade starts to "tear" instead of cutting.
• Never leave the knife unattended with the blade
exposed. Consider using a self-retracted knife with a
spring-loaded black knife. (The blade will retract when
the pressure is removed.
• Keep your free hand away from the cutting line.
• Do not bend or apply side loads to blades by using
them to open cans or pay loose objects. Blades are
brittle and can break easily.

24. Proper Use of Tools
Proper use of tools helps prevent accidents and harm
to the equipment and people. There is a right tool for
every job. As a future computer technician, you must
have the proper knowledge of the correct usage of
each tool and the proper tools used for the current
tasks.
Skilful use of tools and software’s makes the job easier
and less difficult. It will ensure that tasks are carried
out correctly and safely.

25. Hardware Tools
A computer technician must also have a
toolkit. The toolkit should contain all the
tools needed to complete hardware
repairs. When you gain experience, you
understand which resources are
available for various types of work and a
technician needs to be able to properly
use each tool in the toolkit.

26. Hand Tools
The majority of tools used in the computer
assembly process are small hand tools. They
can be used individually or as part of a
computer repair toolkit. Toolkits are widely
available in size, quality, and price.

27. Screws
• Match each screw to the proper screwdriver.
• Place the tip of the screwdriver on the screw
head.
• Turn the screwdriver clockwise to tighten the
screw and release the screw in the counter
clockwise direction.
• Screws can be stripped if you over-tighten
them with a screwdriver.
• A stripped screw, as shown in Figure 1, may
be stuck in a screw hole or may not be
tightened tightly. Discard stripped screws.
Figure 1: Stripped screw

28. Screws
Flat-Head Screwdriver
• Use a flat-head screwdriver while
working with a slotted screw.
• Don't use a flat-head screwdriver to
remove a Phillips-head screw.
• Never use a screwdriver as a pry
bar. If the component cannot be
removed, check to see if there is a
clip or lock that secures the
component in place.

29. Screws
CAUTION
If excessive force is required to
remove or add a part, something
may be wrong. Take a second look
to make sure you haven't lost a
screw or a lock clip that keeps the
part in place.

30. Screws 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.

31. How to use Screwdrivers
Start with creating a pilot hole
When you screw into wood, it's a
good idea to make a pilot hole
first. This means that the screw
goes straight. Screws appear to
fit the grain of the wood, resulting
in skew screws. An extra
advantage is that the pilot holes
keep the wood from splitting
when you push the screw in.

32. How to use Screwdrivers
Start the screw
Place the screw on the tip of the
screwdriver and hold the fingers of
one hand tightly. Apply a little
gentle pressure on the screwdriver
while turning clockwise until the
screw starts to move into the wood.

33. How to use Screwdrivers
Keep driving
When the thread of the screws comes
into contact with the wood, you can
release your fingers that held it in place.
Keep hold of the tip of the screwdriver
as a guide. Keep pressing and turning
clockwise, until the screw is firmly in
place.

34. How to use Screwdrivers
Hex Driver
• A hex screwdriver is a type of
screwdriver that has a hexagonal tip
for driving certain nuts, bolts and
screws. Hex screwdrivers, like all
types of screwdrivers, are available
in a wide variety of regular and
metric sizes.

35. How to use Screwdrivers
Hex Driver
• These screwdrivers can make it much
easier to loosen and tighten hex nuts,
bolts and screws. Tool steel is a
particular grade of steel intended for the
manufacturing of manual tools such as
pliers, wrenches and hex screwdrivers.
Hex nuts, bolts and screws can be made
from a wide variety of metals, such as
aluminum, brass, copper and any grade
of steel.

36. How to use Screwdrivers
Hex Driver
• However, most types of
screwdrivers are almost entirely
made of steel materials. Tool
steel is a very hard, robust
grade of steel that holds well to
daily wear and is very solid at
high temperatures.

37. How to use Screwdrivers
Hex Driver
Use the hex driver shown in Figure
2 to loosen and tighten the bolts
with a hexagonal (six-sided) head.
Hex bolts should not be over-
tightened because the threads of the
bolts can be stripped. Don't use a
hex driver that's too large for the
bolt you 're using.
Figure 2: Hex driver

38. How to use Screwdrivers
Hex Driver
CAUTION
Some of the tools are magnetized. When
operating with electronic devices, be sure
that the tools you use have not been
magnetized. Magnetic fields may be harmful
to data stored in magnetic media. Check the
tool by touching the tool with a screw. If the
screw is attracted to the tool, do not use the
tool.
Figure 2: Hex driver

39. How to use Screwdrivers
Hex Driver
Component Retrieving Tools
Needle-nose pliers and tweezers may
be used to position and retrieve
pieces that may be difficult to reach
with your fingertips. There are also
tools called part retrievers that have
been specifically developed for this
task. When using these materials, do
not scratch or touch any of the
components.

40. How to use Screwdrivers
Hex Driver
CAUTION
Pencils cannot be used inside the computer to
adjust the settings of the switches or to delete
the jumpers. The pencil lead can serve as a
conductor and can damage the components of
the computer.

41. Hex Driver
Computer technicians need the right tools to work safely and to
prevent damage to computer equipment. A technician uses a
number of tools to diagnose and repair computer problems:
Various specialized equipment, such as Torx bits, antistatic bags
and gloves, and integrated circuit pullers, can be used for repair
and maintenance of computers. Often avoid magnetized tools,
such as magnetic head screwdrivers, or tool that use magnet
extensions to recover small metal items that are out of control.
Using magnetic tools can cause data loss on hard drives and
floppy disks.

42. FACT OR BLUFF
1. Hand tools are versatile and can be used for various tasks
in day-to-day activities.
2. A computer tool kit is essential for performing repair work
on a PC to ensure the use of proper hand tools and
equipment.
3. Hand tools can be manually operated using force or
electrically powered using electrical current.
4. Flathead screwdrivers are primarily used for tightening or
loosening cross-head screws.
5. Torx screwdrivers are used to tighten or loosen screws with
a star-like depression on the top, commonly found in
laptops.

43. FACT OR BLUFF
6. Hex drivers are primarily used for tightening nuts in
the same way that pliers tighten screws.
7. Needle-nose pliers are used to hold small parts
securely.
8. Wire cutters are used to strip and cut wires.
9. Tweezers are useful for manipulating small parts.
10.Part retrievers are specialized tools used to
retrieve parts from locations too small for hands to
reach.

44. FACT OR BLUFF
11.The two most common hazards associated with hand tools
are misuse and improper maintenance.
12.Eye protection is a minimum requirement for Personal
Protective Equipment (PPE) when using hand tools.
13.Pliers can be extended for additional power without the
risk of cracks or breaks.
14.Screwdrivers should never be used as pry bars, chisels,
punches, stirrers, or scrapers.
15.Utility knives with dull blades are safer to use as they
require more force and are less likely to slip.