7
Technical Vocational Education
Computer Systems Servicing
Quarter 1-Week 8-Module 8
Testing Electronic Components
Determine Criteria for Testing Electronic Components
Plan and Approach for Components Testing
SPTVE_ICTC7-TEC-IVa-c-24
SPTVE_ICTC7-TEC-IVc-e-25
1
Technical Vocational Education Computer Systems Servicing – Grade 7 Alternative
Delivery Mode
Quarter 1 Week 8 Module 8 – Testing Electronic Components
Determine Criteria for Testing Electronics Components
Plan an Approach for Components Testing
First Edition, 2020
Republic Act 8293, section 176 states that: No copyright shall subsist in
any work of the Government of the Philippines. However, prior approval
of the government agency or office wherein the work is created shall be
necessary for exploitation of such work for profit. Such agency or office may,
among other things, impose as a condition the payment of royalties.
Borrowed materials (i.e., songs, stories, poems, pictures, photos, brand
names, trademarks, etc.) included in this book are owned by their respective
copyright holders. Every effort has been exerted to locate and seek
permission to use these materials from their respective copyright owners.
The publisher and authors do not represent nor claim ownership over them.
Published by the Department of Education
Secretary : Leonor Magtolis Briones
Undersecretary: Diosdado M. San Antonio
Development Team of the Module
Maybelle P. Laza, PhD
Author
Language Reviewer
Content Editor
Illustrator
Layout Artist
Management Team:
Gregorio C. Quinto, Jr., EdD
Chief, Curriculum Implementation Division
Rainelda M. Blanco, PhD
Education Program Supervisor - LRMDS
Agnes R. Bernardo, PhD
EPS-Division ADM Coordinator
Joel I. Vasallo, PhD
EPS – EPP/TLE/TVE/TVL
Glenda S. Constantino
Project Development Officer II
Joannarie C. Garcia
Librarian II
Department of Education, Schools Division of Bulacan
Curriculum Implementation Division
Learning Resource Management and Development System (LRMDS)
Capitol Compound, Guinhawa St., City of Malolos, Bulacan
Email address: lrmdsbulacan@deped.gov.ph
2
7
Technical Vocational Education
Computer Systems Servicing
Quarter 1-Week 8-Module 8
Testing Electronic Components
Determine Criteria for Testing Electronics Components
Plan and Approach for Components Testing
SPTVE_ICTC7-TEC-IVa-c-24
SPTVE_ICTC7-TEC-IVc-e-25
3
Introductory Message
For the Facilitator:
Welcome to the Technical Vocational Education-Computer Systems Servicing 7 Project
CAP-LRE Alternative Delivery Mode (ADM) Module on Testing Electronic Components.
This module was collaboratively designed, developed, and reviewed by educators both from
public and private institutions to assist you, the teacher or facilitator in helping the learners
meet the standards set by the K to 12 Curriculum while overcoming their personal, social,
and economic constraints in schooling.
This learning resource hopes to engage the learners into guided and independent learning
activities at their own pace and time. Furthermore, this also aims to help learners acquire
the needed 21st century skills while taking into consideration their needs and
circumstances.
In addition to the material in the main text, you will also see this box in the body of the
module:
Notes to the Teacher
This contains helpful tips or strategies that will
help you in guiding the learners
As a facilitator, you are expected to orient the learners on how to use this module. You also
need to keep track of the learners’ progress while allowing them to manage their own
learning. Furthermore, you are expected to encourage the learners as they do the tasks
included in the module.
For the Learner:
Welcome to the Technical Vocational Education-Computer Systems Servicing 7 Project
CAP-LRE Alternative Delivery Mode (ADM) Module on Testing Electronic Components.
This module was designed to provide you with fun and meaningful opportunities for guided
and independent learning at your own pace and time. You will be enabled to process the
contents of the learning resource while being an active learner.
This module has the following parts and corresponding icons:
This will give you an idea of the skills or
competencies you are expected to learn in the
module.
This part includes an activity that aims to check
what you already know about the lesson to take.
If you get all the answers correctly (100%), you
may decide to skip this module.
4
This is a brief drill or review to help you link the
current lesson with the previous one.
In this portion, the new lesson will be introduced
to you in various ways; a story, a song, a poem,
a problem opener, an activity, or a situation.
This section provides a brief discussion of the
lesson. This aims to help you discover and
understand new concepts and skills.
This comprises activities for independent practice
to solidify your understanding and skills of the
topic. You may check the answers to the
exercises using the Answer Key at the end of the
module.
This includes questions or blank sentence/
paragraph to be filled into process what you
learned from the lesson.
This section provides an activity that will help you
transfer your new knowledge or skill into real life
situations or concerns.
This is a task which aims to evaluate your level of
mastery in achieving the learning competency.
In this portion, another activity will be given to you
to enrich your knowledge or skill of the lesson
learned.
This contains answers to all activities in the
module.
At the end of this module, you will also find:
References- This is a list of all sources used in developing this module.
The following are some reminders in using this module:
1. Use the module with care. Do not put unnecessary mark/s on any part of the module. Use
a separate sheet of paper in answering the exercises.
2. Don’t forget to answer What I Know before moving on to the other activities included in the
module.
3. Read the instruction carefully before doing each task.
4. Observe honesty and integrity in doing the tasks and checking your answers.
5. Finish the task at hand before proceeding to the next.
6. Return this module to your teacher/facilitator once you are through with it.
If you encounter any difficulty in answering the tasks in this module, do not hesitate to
consult your teacher or facilitator. Always bear in mind that you are not alone.
We hope that through this material, you will experience meaningful learning and gain a deep
understanding of the relevant competencies. You can do it!
5
This module encourages you to be familiar on how to test electronic components.
1. Obtain and clarify work instructions based on job order or client requirements
2. Consult responsible person for effective and proper work coordination
3. Obtain and interpret data sheets/application notes based on manufacturer’s
specifications
4. Define testing criteria to ensure that components meet technical and quality
requirements
5. Identify various testing methods based on types of electronic components
6. Prepare and check required test and measuring instruments and tools in
accordance with established procedures
7. Establish record system to document testing results, including problems and
faults
Matching Type. Match the components in column A with its schematic
symbol in column B
COLUMN A COLUMN B
ACTUAL COMPONENT COMPONENT NAME
1.
2.
3.
4.
6
5.
6.
7.
8.
9.
10.
Let us check if you can still recall our previous lesson
about terminating and connecting electrical wiring.
In terminating and connecting electrical wiring its
important to familiarize the different tools used. List down
the 10 basic electronic equipment and hand tools
1. _____________________________________________
2. _____________________________________________
3. _____________________________________________
4. _____________________________________________
7
5. _____________________________________________
6. _____________________________________________
7. _____________________________________________
8. _____________________________________________
9. _____________________________________________
10. _____________________________________________
Directions: List down at least 10 electronic appliances that are available at your
home. Write your answer on a separate sheet of paper.
1. ________________________ 6. ________________________
2. ________________________ 7. ________________________
3. ________________________ 8. ________________________
4. ________________________ 9. ________________________
5. ________________________ 10. _______________________
Electronic gadgets have become an integral part of our lives. They have made
our lives more comfortable and convenient. From aviation to medical and healthcare
industries, electronic gadgets have a wide range of applications in the modern world.
In fact, the electronics revolution and the computer revolution go hand in hand.
8
COMMON COMPONENTS AND THEIR SCHEMATIC SYMBOLS
Name/Description Actual Component Schematic Symbol
Resistor (a)
Fixed resistors (a) carbon
composition resistor (b) wire
wound resistor. It is used to
reduce current flow. b)
Non Polarized Capacitor
Common types are Mylar and
Ceramic. is a type of capacitor
that have implicit polarity -- it can
only be connected one way in a
circuit.
Electrolytic Capacitor
It is polarized type of capacitor. It
is used where high levels of
capacitance are required, but to
provide long reliable service it
must be used correctly and
within its specifications.
Rectifier Diode
Used primarily in converting AC
to DC. It allows current to flow
easily in one direction, but
severely restricts current from
flowing in the opposite direction.
Light Emitting Diode
Emits light when current flow
through it.
Transformer
This is an electrical device
which, by the principles of
electromagnetic induction,
transfers electrical energy from
one electric circuit to another,
without changing the frequency.
9
Inductor
It is also called a coil, choke, or
reactor, is a passive two-
terminal electrical component
that stores energy in a magnetic
field when electric current flows
through it.
NPN Transistor
The three leads are: base,
emitter, and collector. It
regulates current or voltage
flow.
PNP Transistor
The PNP transistor has two
crystal diodes connected back
to back. In PNP transistor, the
majority current carriers are
holes and electrons are the
minority current carriers.
Integrated Circuit (IC)
Composed of resistors, diodes,
and transistors in a package.
Speaker
An audio output device.
Relay Switch
Electrically controlled switch
that is typically operated by
using electromagnetism to
operate a mechanical switching
mechanism.
ACTIVITY 1:
Directions: Give the schematic symbols of the following electronic components. Write your
answers on a separate sheet of paper.
1. Integrated Circuit
2. Relay Switch
3. PNP Transistor
10
4. Sound
5. Light Emitting Diode
6. Electrolytic Capacitor
7. Transformer
8. Resistor
9. Diode
10. Polarized Capacitor
An electronic technician or troubleshooter must have an intensive
knowledge of electronics, test equipment, troubleshooting techniques, and
equipment repair. Analog and digital circuits occasionally fail, and in most cases
a technician is required to identify the problem within the system and then make
a repair. The procedure for fixing a failure can be broken down into three basic
steps.
Step 1: DIAGNOSE
The first step is to determine whether a problem really exists. To carry out this
step, a technician must collect as much information about the system, the circuit,
and the components used, and then diagnose the problem.
Step 2: ISOLATE
The second step is to apply a logical and sequential reasoning process to isolate
the problem. In this step, a technician will operate, observe, test, and apply
troubleshooting techniques to isolate the malfunction.
Step 3: REPAIR
The third and final step is to make the actual repair and final test the circuit. To
troubleshoot, you will need a thorough knowledge of troubleshooting techniques,
a very good understanding of test equipment, documentation in the form of
technical and service manuals, and experience.
You need enough knowledge and skills in troubleshooting and
familiarization on a different tools and components to be repaired.
11
BASIC MEASURING AND TEST EQUIPMENT
It is the job of a test technician to know which piece of test equipment to use for
the task at hand and understand the limitations of the test equipment they are using.
Multimeter
Also known as a VOM (Volt-Ohm
meter), a multi-meter is a
handheld device that combines
several measurement functions
(such as voltage, current,
resistance and frequency) into a
single unit.
Multi-meters are mainly used to
troubleshoot electrical problems in
a wide array of industrial and
household devices such as
electronic equipment, motor
controls, domestic appliances,
power supplies, and wiring
systems.
Low-Resistance Ohmmeter
Often called a DLRO in the field,
the low-resistance ohmmeter is
used for making high-precision
resistance measurements below 1
ohm. Low-Resistance ohmmeters
produce low voltage DC currents
via battery power with outputs of
up to 100A.
Analog multimeters are
instruments that are used to
measure electrical quantities such
as voltage, current, resistance,
frequency, and signal power. Basic
functionality includes
measurement of potential in volts,
resistance in ohms, and current in
amps. Analog multimeters are
used to find electronic and
electrical problems. Advanced
units come with more features
such as capacitor, diode, and IC
testing modes.
12
COMPONENT SUBSTITUTION
In many cases it is possible to replace a failed component with an exact
replacement. The use of "exact" is often critical. Unfortunately, there are times when an
exact replacement is unavailable. This is particularly true if the equipment is old or
imported. In such cases you may have no choice but to substitute with a close rather
than exact replacement. This is permissible in many cases, provided that several
important factors are kept in mind.
a. Transformer
Replacement should have the same turns ratio, voltage/current ratio, and rating as the
original component. The power rating (VA) and frequency range are also important.
b. Transistor
Transistor substitution is common, particularly with lower cost equipment. In some cases,
you may have a choice between a few different transistors. At other times, the
replacement must be exact.
c. Resistors
Be sure that the replacement component has the same power rating and resistance
value. Its tolerance must be at least as good and can be better.
d. Capacitors
Ensure that the replacement component has the same capacitance value as that of the
original, and that its tolerance is the same or better. The working voltage rating must also
be the same or better (greater).
e. Other Components
The same considerations apply to other types of components (diodes, fuses, speakers,
etc.). In every case, it is necessary to proceed with caution, and to be sure that the
replacement is correctly rated.
Datasheet
A datasheet is a document, printed or electronic that provides details about a product,
like a computer, computer component, or software program. The datasheet includes
information that helps in making a buying decision about a product by providing technical
specifications about the product.
13
Example of Data Sheet
https://www.yumpu.com/en/document/view/18099814/datasheets-svn
Figure 1. Example of data sheet
14
Independent Activity 1:
Directions: Write T if the statement is correct and F if the statement is incorrect. Write your
answer on a separate sheet of paper.
_____ 1. Capacitor should have the same turns ratio, voltage/current ratio, and rating as the
original component.
_____ 2. Be sure that the replacement of resistor has the same power rating and resistance
value.
_____ 3. The datasheet includes information that helps in making a buying decision about a
product by providing technical specifications about the product.
_____ 4. It is not necessary to proceed with caution, and to be sure that the replacement is
correctly rated.
_____ 5. Transistor substitution is not common, and the replacement must be exact.
Independent Activity 2:
Directions: Identify the different electronic components. Write your answer on a separate sheet
of paper.
2.
5.
4.
3.
1.
https://www.build-electronic-circuits.com/make-circuit-board/
Figure 2. Electronic components on a printed circuit board.
15
1. _________________________________
2. _________________________________
3. _________________________________
4. _________________________________
5. _________________________________
Directions: Answer the questions below. Write your answer on a separate sheet of
paper.
1. Explain the basic steps in repairing and troubleshooting of an electronic component.
_________________________________________________________
_________________________________________________________
_________________________________________________________
_________________________________________________________
_________________________________________________________
2. Based on the printed circuit board in figure 2, draw the schematic
symbols of the numbered components.
1. _____________________________
2. _____________________________
3. _____________________________
4. _____________________________
5. _____________________________
16
Directions: List down the factors to be
considered in substituting an electronic
component.
1. Transformer
2. Transistor
3. Diode
4. Resistor
5. Capacitor
17
Matching Type: Match the different components in column A with their schematic
symbol in column B. Write your answer on a separate sheet of paper.
COLUMN A COLUMN B
1. A.
2. B.
C.
3.
4. D.
5. E.
6. F.
7. G.
8. H.
9. I.
10. J.
18
Directions: Answer the crossword below. Write your answer on a separate sheet of
paper.
19
20
What I Know What’s More
1. Resistor Independent Activity 1
2. Capacitor
1. F
3. LED
4. Inductor 2. T
5. Integrated Circuit 3. T
6. Speaker 4. F
7. Diodes 5. F
8. Transformer Independent Activity 2
9. Rely switch 1. Resistor
10. Transistor
2. Electrolytic Capacitor
What’s In 3. Non-polarized Capacitor
1. Wire cutter 4. Integrated Circuit
2. Needle-nose pliers 5. Relay Switch
3. Flat-head screwdriver
4. Soldering iron What I Have Learned
5. Desoldering tool
6. Solder stand 1.
7. Multi-volts power supply
8. Multimeter 2.
9. Portable electric hand drill
3.
What Is It
Activity 1
4.
1.
5.
2.
Assessment
1. D 6. H
3.
2. F 7. I
3. A 8. J
4.
4. B 9. E
5. G 10. C
5.
Additional Activity
6.
1. Multimeter
2. Ohmmeter
7. 3. Resistor
8. 4. Speaker
5. Transistor
6. Inductor
9.
7. Diode
8. Transformer
10.
References
https://www.build-electronic-circuits.com/basic-electronic-components/
https://www.electronics-tutorials.ws/transformer/transformer-basics.html
https://www.galleon.ph/electronics-c879/yeeco-30a-high-current-12v-contactor-relay-switch-
p8656939
https://www.build-electronic-circuits.com/what-is-an-inductor/
https://ph.rs-online.com/web/p/leds/2285821/
https://www.english4it.com/module/core/unit/21/reading
https://blog.mide.com/how-electronic-components-work
https://www.reichelt.com/de/en/wirewound-resistor-axial-4-w-0-01-ohm-5--vit-kn350-85b0r1-
p233356.html?CCOUNTRY=445&LANGUAGE=en&&r=1
https://www.westfloridacomponents.com/NP040APQ02/220uF+25V+Non+Polar+Radial+Ele
ctrolytic+Capacitor+Dubilier+CEBNP22025.html
https://ph.rs-online.com/web/p/aluminium-capacitors/1443240/
https://www.amazon.com/NTE-Electronics-MLR104K400-Non-Polarized-Non-
Inductive/dp/B007Z7N5QM
https://www.reichelt.com/de/en/rectifier-diode-100v-10a-axial-nte-5812hc-p219539.html
https://testguy.net/content/296-Test-Equipment-101-The-Basics-of-Electrical-Testing
https://testguy.net/content/296-Test-Equipment-101-The-Basics-of-Electrical-Testing
https://www.globalspec.com/learnmore/labware_test_measurement/multimeters_electrical_t
est_meters/analog_multimeters#:~:text=Analog%20multimeters%20are%20instruments%20
that,ohms%2C%20and%20current%20in%20amps.
https://www.globaltestsupply.com/product/kyoritsu-1109-analogue-multimeters
https://www.computerhope.com/jargon/d/datasheet.htm
https://www.fluke.com/en-ph/learn/best-practices/measurement-basics/electricity/what-is-a-
diode#:~:text=A%20diode%20is%20a%20semiconductor,flowing%20in%20the%20opposite
%20direction
https://www.researchgate.net/post/I_want_to_know_the_main_advantage_of_polarized_cap
acitor_If_non_polarized_can_replace_it_then_why_are_we_using_polarized_capacitor2#:~:t
ext=%22bipolar%22%20capacitors.-
,Polarized%20fixed%20capacitor,a%20little%20%22%2B%22%20symbol.
https://www.electronics-
notes.com/articles/electronic_components/capacitors/electrolytic.php
https://www.galco.com/comp/prod/trnsfmrs.htm
https://circuitglobe.com/pnp-transistor.html
https://www.electronicshub.org/pnp-transistor/
https://www.electronics-notes.com/articles/electronic_components/electrical-electronic-
relay/what-is-a-relay-basics.php
21
