1. COMPUTER SYSTEM
SERVICING
Using and Maintaining
Hand Tools

2. Using and Maintaining Hand Tools
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A handheld device that aids in accomplishing task. It is
important to have a toolkit that contains all the necessary
tools in different types of jobs when we repair and maintain
hardware equipment. Now, you will learn which tools to be
use in preparing a task. Tools are group into four categories:
Hand tool, EDS tools, Cleaning tools, Diagnostic tools.

3. Hand Tools
A. HAND TOOLS - A device for performing work on a
material or a physical system using only hand. It
can be manually used employing force or
electrically powered.

4. Needle Nose Plier - for connecting wire,
holding, bending, and stretching the lead of
electronics component.
Wire Cutter - for cutting copper, brass, iron,
aluminum and steel wires.

5. Flat Head Screwdriver - to loosen or tighten
or fasten slotted screws.
Hex driver - used to tighten nuts in the same
way that a screwdriver tightens screws.

6. Philips head Screwdriver - to loosen or
tighten or fasten crosshead screws.
Soldering iron - to join two or more metal
conductor with the support of soldering lead
melted around it.

7. Soldering stand - for spring holder, it is
composed of a heavy-duty metal base.
Crimping Tool - to conjoin two pieces of metal
by deforming one or both that causes it to hold
together.

8. Wire Stripper - a small hand-held device used
to strip the electrical insulation from electric
wires.
Tweezer - a tool used to manipulate small
parts.

9. B. DIAGNOSTIC TOOLS- Used to test the
integrity of circuits and the quality of electricity in
computer components and to test the functionality
of computer.

10. Multi-tester - tool used to test the integrity of
circuits and therefore the quality of electricity
in computer components.
Lan Tester - tool designed to check most
network cable wiring.

11. Loopback Adapter - used to test the
functionality of computer ports.

12. C. ELECTRO-STATIC DISCHARGE (ESD)
TOOLS- An accumulation of electric charge on an
insulated body.

13. Anti-static wrist strap
Used to safely ground a person working on
very sensitive electronic equipment, to prevent
the buildup of electricity on their body, which
might lead to electrostatic discharge (ESD)
Equipment
Anti-static mat
Used to stand on or place hardware on to
prevent static electricity from building up.

14. D. CLEANING TOOLS- Used to help keep
everything in good working condition, helps
prevent germs from spreading, and helps allow
proper air flow.

15. Lint-free cloth - used to clean different
computer components without scratching or
leaving debris.
Compressed air - used to blow away dust
and debris from different computer parts
without touching the components.

16. 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.

17. Preparing for the task to be undertaken
includes proper tool selection.
1. Know and understand in detail the scope of work to be
accomplished,
2. Plan for the scope taking into account the sequence of tasks.
3. 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.
4. When obtaining the tool all the associated tooling and
consumable parts, as recommended by the manufacturer, must
be included.

18. Preparing Use of Tools
A computer technician is required to use appropriate tools within
the toolkit when repairing computers. Here is the correct use of
tools in working areas.
A. Proper Use of hand Tools
Several tools are magnetized. When working around electronic
devices, take care that tools you’re using haven’t been
magnetized. Magnetic fields may be harmful to data stored on
magnetic media.

19. 1.Screwdriver and screw. Use the proper type and size of
screwdriver by matching it to the screw. Turn the screwdriver
clockwise to tighten the screw. Turn the screwdriver counter
clockwise to loosen the screw. Do not over tighten screw because
the threads may become stripped.
2. Soldering iron and stand. Always use a soldering iron and
stand to avoid burns or damage after soldering.

20. 3. Crimping tool and wire stripper. Always verify the types of
wire or cable of a crimper if it is capable of crimping. And make
sure that the stripper has a comfortable grip, cleanly removes
insulation from wires, and keeps the actual wire intact.
4. Long Nose Pliers and Tweezer. When holding wires, grip the
long nose pliers carefully and firmly. Do not use it as a hammer.
For hard to reach objects or small ones, use the tweezer.

21. 5. Multi-tester and Lan tester. Always maintain the functionality
and accuracy of multi tester and LAN tester to ensure the
accurateness of measurement of any things that you measure.

22. B. Proper use of ESD Tools
Anti-static wrist strap. Check properly the overall use, wrap
the strap around your wrist. Always ground yourself while working
with electronic components. The connection will keep your body
at the same voltage (potential) as the computer.
Caution: Never wear an AWS if you are repairing a monitor or
CRT.
C. Proper use of Antistatic Mat
Lay computer on the mat.
Connect the mat to a reliable electrical ground with its cable.
Now, you and the computer are at ground potential.

23. D. Proper use of Cleaning Materials
 Use mild cleaning solution and lint-free cloth to clean
computer
cases, outside of monitor, LCD screen, CRT screen and mouse.
 Use compressed air to clean heat sinks.
 Use isopropyl alcohol and lint-free swabs to clean RAM.
 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.

24. All tools and equipment’s must be properly maintained to keep them safe and in
usable condition. It requires inspection of tools, and equipment before use.
Here are the subsequent requirements for tools and equipment maintenance:
1. Obtaining a duplicate of the upkeep schedule recommended by the
manufacturer.
2. Ensuring that maintenance is performed as needed.
3. Ensuring that the person(s) performing the upkeep is competent.
4. Retaining records of maintenance/service conducted
5. Specifying who is to blame 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.
Preparing Maintainance of Tools

25. To ensure that tools and equipment remain in condition and last
for a protracted time, store them properly so it’ll be easy to search
out when needed, and are less likely to be lost.
PPE (Personal Protective Equipment)
This is to shield you from hazards that may happen during the
working time at your workplace. Always wear PPE equipment like
gloves, safety glasses, protective masks, and rubber sole shoes.