Competency-Based Learning Materials: Electronic Products Assembly and Servicing Ncii

Competency-Based
Learning Materials
ELECTRONIC PRODUCTS
ASSEMBLY AND SERVICING NCII
Unit of Competencies : Assemble Electronic Products
Module No. 1 : Assemble Electronic Products

(Qualification Title)
COMPETENCY-BASED LEARNING MATERIALS
List of Competencies
No. Unit of Competency Module Title Code

Assemble Electronic Assembling Electronic ELC724335
1. Products Products
Service consumer Service consumer ELC724336
electronic products electronic products and
2.
and systems systems
Service industrial Service industrial ELC724337
electronic modules, electronic modules,
3.
products and systems products and systems
Document No
Date Developed:
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NOEL Ll. MADRIDEO Revision # 01
HOW TO USE THIS COMPETENCY- BASED LEARNING
MATERIALS
Welcome!
The unit of competency, " Assemble Electronic Products”, is one of

the competencies of Electronic Products Assembly and Servicing NC II, a
course which comprises the knowledge, skills and attitudes required for a
TVET trainer to possess. The module, “Assembling Electronic
Products”, contains training materials and activities related to identifying
learner’s requirements, preparing session plan, preparing basic instructional
materials and organizing learning and teaching activities for you to
complete. In this module, you are required to go through a series of learning
activities in order to complete each learning outcome. In each learning
outcome are Information Sheets, Self-Checks, Task Sheets and Job Sheets.
Follow and perform the activities on your own. If you have questions, do not
hesitate to ask for assistance from your facilitator.
Remember to:
Read information sheets and complete theself-checks. Suggested

references are included to supplement the materials provided in this
module.
Perform the Task Sheets and Job Sheets until you are confident that your
outputs conform to the Performance Criteria Checklist that follows the
sheets.
Submit outputs of the Task Sheets and Job Sheets to your facilitator for
evaluation and recording in the Accomplishment Chart. Outputs shall
serve as your portfolio during the Institutional Competency Evaluation.
When you feel confident that you have had sufficient practice, ask your
trainer to evaluate you. The results of your assessment will be recorded in
your Progress Chart and Accomplishment Chart. You must pass the
Institutional Competency Evaluation for this competency before moving to
another competency. A Certificate of Achievement will be awarded to you
after passing the evaluation. You need to complete this module before you
can perform the module on “Assembling Electronic Products”.
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MODULE CONTENT
UNIT OF COMPETENCY: Assemble Electronic Products

MODULE TITLE: Assembling Electronic Products
MODULE DESCRIPTOR: This module is designed to enhance the

knowledge, skills and attitude of the trainees in maintaining and repairing
electronically controlled domestic appliances.
NOMINAL DURATION: 80 hours
LEARNING OUTCOMES:
LO1. Prepare to assemble electronic products
LO2. Prepare/ Make PCB modules
LO3. Mount and solder electronic components
LO4. Perform electronic products assembly
LO5. Test and inspect assembled electronic products
ASSESSMENT CRITERIA:
1. Electrical safety precautions are identified, enumerated and
explained correctly
2. OHS in maintaining and repairing electronically controlled domestic
appliances are defined and explained
3. OHS in maintaining and repairing electronically controlled domestic
appliances are demonstrated in accordance to the set
procedures/instructions
4. Materials needed for maintenance and repair are identified and
prepared and checked according to the work instructions
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5. Tools and equipment types and functions needed for maintenance and
repair are identified and demonstrated according to set standards
6. Testing devices and instruments operations needed for maintenance
and repair are explained and demonstrated according to instruction
manual
7. Personal protective equipment are used in accordance with the
Occupational
8. Health and Safety guidelines and policies
9. Electronic symbols are identified and selected according to the
schematic diagram
10. Electronic parts value are read and matched correctly as required
11. Schematic diagram sections and functions are identified and
explained
12. Personal protective equipment are used in accordance with
occupational health and safety practices
13. Control settings/adjustments are checked in conformity with service-
manual specifications.
14. System defects/Fault symptoms are diagnosed and identified using
appropriate tools and equipment and in accordance with safety
procedures
15. Identified defects and faults are explained to the responsible person in
accordance with enterprise or company policy and procedures
16. Customers are advised/informed regarding the status and
serviceability of the unit
17. Results of diagnosis and testing are documented accurately and
completely within the specified time
18. Materials, tools and instruments needed in troubleshooting repair and
cleaning are selected and checked in accordance with established
procedures
19. Isolation of troubles are performed with proper Personal Protective
Equipment (PPE) and following the Occupational Health and Safety (OHS)
practices
20. Troubles are isolated by following the systematic procedures and
using proper instruments in accordance with the prescribed instructions
21. Defective parts/components are replaced with identical or
recommended appropriate equivalent ratings and soldered/mounted in
accordance with the current industry standards
22. Control settings/adjustments of repaired unit are performed in
conformity with service-manual specifications
23. Cleaning of unit is performed in accordance with standard procedures
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24. Periodical tests of the repaired unit are maintained and documented
according to standard procedures
25. Repaired units are reassembled completely and waste materials are
disposed of in accordance with environmental requirements
26. Results of troubleshooting and repair are documented properly within
the specified time
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LEARNING OUTCOME NO. 3
Identify and explain or interpret the principles of operation of electronic
symbols and block sections of schematic diagram
Contents:
1. Electronic devices and symbols

2. Resistor and capacitor color codes
3. Classes and types of electronic parts/devices
4. Drawing and interpreting schematic diagrams
Assessment Criteria
1. Electronic symbols are identified and selected according to the

schematic diagram
2. Electronic parts value are read and matched correctly as required
3. Schematic diagram sections and functions are identified and
explained
Conditions
The participants will have access to:
1. Drawing instruments and materials

2. Working area/bench
3. Sufficient lighting and ventilation system
4. Complete electronic supplies
Assessment Method:
1. Written test
2. Practical test
3. Direct observation
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Learning Experiences
Learning Outcome 3
Identify and explain or interpret the principles of operation of electronic
symbols and block sections of schematic diagram
Learning Activities Special Instructions

Read information sheet 3.3-1
Electronic devices and symbols
Answer Self Check 3.3-1 Electronic Try to answer self check without
devices and symbols looking at the key answer
Perform Task Sheet 3.3-2 Resistor Always use a Magnifying glass to
and capacitor color coding identify well the colors of a
miniature resistors
Refer to performance criteria 3.3-2 View PowerPoint presentation and
video presentation
Read information sheet 3.3-2 Resistor

and capacitor color codes
Answer Self Check 3.3-2 Resistor and Try to answer self check without
capacitor color codes looking at the key answer
Read information sheet 3.3-3

Drawing and interpreting schematic
diagrams
Answer Self Check 3.3-3 Drawing and Try to answer self check without
interpreting schematic diagrams looking at the key answer
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Information Sheet 3.3-1
Electronic devices and symbols
Learning Objectives:
After reading this INFORMATION SHEET, YOU MUST be able to:
1. Define the different kind’s electronic devices
2. Classify the different kind’s electronic devices
3. Illustrate the different types of electronic symbols
5. Label the different types of electronic symbols
This information sheet will define, discuss, demonstrate, illustrate and

classify about the different kinds of electronic devices also the different types
of electronic symbols.
 An electronic component/device is any basic discrete

device or physical entity in an electronic system used to
affect electrons or their associated fields. Electronic
components are mostly industrial products, available in a
singular form and are not to be confused with electrical
elements, which are conceptual abstractions representing
idealized electronic components.
 Electronic components have two or more electrical

terminals (or leads). These leads connect, usually soldered
to a printed circuit board, to create an electronic circuit (a
discrete circuit) with a particular function (for example an
amplifier, radio receiver, or oscillator). Basic electronic
components may be packaged discretely, as arrays or
networks of like components, or integrated inside of
packages such as semiconductor integrated circuits,
hybrid integrated circuits, or thick film devices. The
following list of electronic components focuses on the
discrete version of these components, treating such
packages as components in their own right.
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Classification of Electronic Components/Devices
There are two classifications of electronic components/devices

Which are:
 Active components rely on a source of energy (usually from the DC

circuit, which we have chosen to ignore) and usually can inject power
into a circuit, though this is not part of the definition. Active
components include amplifying components such as transistors,
triode vacuum tubes (valves), and tunnel diodes. Active components
are so called Semiconductors.
 Example of active components:
1. Diodes- Conduct electricity easily in one direction, among more

specific behaviors.
2. Transistors- Transistors were considered the invention of the century
that changed electronic circuits forever. A transistor is a
semiconductor device used to amplify and switch electronic signals
and electrical power.
3. Integrated circuits- An integrated circuit or monolithic integrated
circuit (also referred to as an IC, a chip, or a microchip) is a set of
electronic circuits on one small plate ("chip") of semiconductor
material, normally silicon. This can be made much smaller than a
discrete circuit made from independent components.
Integrated circuits are used in virtually all electronic equipment today
and have revolutionized the world of electronics. Computers, mobile
phones, and other digital home appliances are now inextricable parts
of the structure of modern societies, made possible by the low cost of
producing integrated circuits.
4. Optoelectronic devices- A field of technology that combines the
physics of light with electricity. Optoelectronics encompasses the
study, design and manufacture of hardware devices that convert
electrical signals into photon signals and vice versa. Any device that
operates as an electrical-to-optical or optical-to-electrical transducer
is considered an optoelectronic device.
Optoelectronic technologies include fiber optic communications, laser
systems, electric eyes, remote sensing systems, medical diagnostic
systems and optical information systems.
EXAMPLES:
Opto-Isolator, Opto-Coupler, Photo-Coupler – Photodiode, BJT, JFET,

SCR, TRIAC, Zero-crossing TRIAC, Open collector IC, CMOS IC, Solid
state relay (SSR)
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Opto switch, Opto interrupter, Optical switch, Optical interrupter,
Photo switch, Photo interrupter
LED display – Seven-segment display, Sixteen-segment display, Dot-
matrix display
5. Display technologies- A display device is an output device for

presentation of information in visual or tactile form (the latter used for
example in tactile electronic displays for blind people). When the input
information is supplied as an electrical signal, the display is called an
electronic display.
EXAMPLES:
 Filament lamp (indicator lamp)

 Vacuum fluorescent display (VFD) (preformed characters, 7
segment, starburst)
 Cathode ray tube (CRT) (dot matrix scan (e.g. computer
monitor), radial scan (e.g. radar), arbitrary scan (e.g.
oscilloscope)) (monochrome & colour)
 LCD (preformed characters, dot matrix) (passive, TFT)
(monochrome, colour)
 Neon (individual, 7 segment display)
 LED (individual, 7 segment display, starburst display, dot
matrix)
 Flap indicator (numeric, preprinted messages)
 Plasma display (dot matrix)
6. Vacuum tubes (valves)- is a device controlling electric current

through a vacuum in a sealed container. The container is often thin
transparent glass in a roughly cylindrical shape. The simplest vacuum
tube, the diode, is essentially an incandescent light bulb with an
added electrode inside. When the bulb's filament is heated white-hot,
electrons are "boiled" off its surface and into the vacuum inside the
bulb. If the electrode -- called a "plate" or "anode" -- is made more
positive than the hot filament, a direct current flows through the
vacuum to the electrode (a demonstration of the Edison effect). As the
current only flows in one direction, it makes it possible to convert an
alternating current applied to the filament to direct current.
EXAMPLES:
 Diode or Rectifier tube

 Amplifying tubes
 Triode
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 Tetrode
 Pentode
 Hexode
 Pentagrid
 Octode
 Microwave tubes
7. Power sources- Sources of electrical power
EXAMPLES:
 Battery – acid- or alkali-based power supply

 Fuel cell – an electrochemical generator
 Power supply – usually a mains hook-up
 Photo voltaic device – generates electricity from light
 Thermo electric generator – generates electricity from
temperature gradients
 Electrical generator – an electromechanical power source
 Piezoelectric pressure - creates electricity from mechanical
strain
 Physically carrying electrons - Van de Graaff generator or
essentially creating voltage from friction
 Passive components- can't introduce net energy into the

circuit. They also can't rely on a source of power, except for
what is available from the (AC) circuit they are connected to. As
a consequence they can't amplify (increase the power of a
signal), although they may increase a voltage or current (such
as is done by a transformer or resonant circuit). Passive
components include two-terminal components such as
resistors, capacitors, inductors, and transformers.
 Example of Passive components:
1. Resistors- Pass current in proportion to voltage (Ohm's law) and

oppose current.
Types of Resistors:
 Resistor – fixed value
 Power resistor – larger to safely dissipate heat generated
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 SIP or DIP resistor network – array of resistors in one package
 Variable resistor
 Rheostat – two-terminal variable resistor (often for high power)
 Potentiometer – three-terminal variable resistor (variable
voltage divider)
 Trim pot – Small potentiometer, usually for internal
adjustments
 Heater – heating element
 Resistance wire, Nichrome wire – wire of high-resistance
material, often used as a heating element
 Thermistor – temperature-varied resistor
 Humistor – humidity-varied resistor
 Varistor, Voltage Dependent Resistor, MOV – Passes current
when excessive voltage is present.
2. Capacitors- Capacitors store and release electrical charge. They

are used for filtering power supply lines, tuning resonant circuits,
and for blocking DC voltages while passing AC signals, among
numerous other uses.
Types of Capacitors:
o Integrated capacitors
o MIS capacitor
o Trench capacitor
o Fixed capacitors
o Ceramic capacitor
o Film capacitor
o Electrolytic capacitor
o Aluminum electrolytic capacitor
o Tantalum electrolytic capacitor
o Niobium electrolytic capacitor
o Polymer capacitor
o OS-CON
o Electric double-layer capacitor
o Nano ionic super capacitor
o Lithium-ion capacitor
o Mica capacitor
o Vacuum capacitor
o Variable capacitor – adjustable capacitance
o Tuning capacitor – variable capacitor for tuning a radio,
oscillator, or tuned circuit
o Trimmer capacitor – small variable capacitor usually for
internal adjustments
o Vacuum variable capacitor
o Capacitors for special applications
o Power capacitor
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o Safety capacitor
o Filter capacitor
o Light-emitting capacitor
o Motor capacitor
o Photoflash capacitor
o Reservoir capacitor
o Capacitor network (array)
o Varicap diode – AC capacitance varies according to the DC
voltage applied
3. . Magnetic (inductive) devices- Electrical components that use

magnetism.
Examples:
 Inductor, coil, choke

 Variable inductor
 Saturable Inductor
 Transformer
 Magnetic amplifier (toroid)
 ferrite impedances, beads
 Motor / Generator
 Solenoid
 Loudspeaker and microphone
4. Transducers, sensors, detectors - Transducers generate physical

effects when driven by an electrical signal, or vice-versa.
 Sensors (detectors) are transducers that react to environmental

conditions by changing their electrical properties or generating an
electrical signal.
 The transducers listed here are single electronic components (as
opposed to complete assemblies), and are passive (see
Semiconductors and Tubes for active ones). Only the most common
ones are listed here.
 Audio (see also piezoelectric devices)
 Loudspeaker – Magnetic or piezoelectric device to generate full
audio
 Buzzer – Magnetic or piezoelectric sounder to generate tones
Position, motion
 Linear variable differential transformer (LVDT) – Magnetic –
detects linear position
 Rotary encoder, Shaft Encoder – Optical, magnetic, resistive or
switches – detects absolute or relative angle or rotational speed
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 Inclinometer – Capacitive – detects angle with respect to gravity
 Motion sensor, Vibration sensor
 Flow meter – detects flow in liquid or gas
 Force, torque
 Strain gauge – Piezoelectric or resistive – detects squeezing,
stretching, twisting
 Accelerometer – Piezoelectric – detects acceleration, gravity
 Thermal
 Thermocouple, thermopile – Wires that generate a voltage
proportional to delta temperature
 Thermistor – Resistor whose resistance changes with temperature,
up PTC or down NTC
 Resistance Temperature Detector (RTD) – Wire whose resistance
changes with temperature
 Bolometer – Device for measuring the power of incident
electromagnetic radiation
 Thermal cutoff – Switch that is opened or closed when a set
temperature is exceeded
 Magnetic field (see also Hall Effect in semiconductors)
 Magnetometer, Gauss meter
 Humidity
 Hygrometer
 Electromagnetic, light
 Photo resistor – Light dependent resistor (LDR)
5. Assemblies, modules - Multiple electronic components assembled

in a device that is in itself used as a component.
Examples:
 Oscillator
 Display devices
 Liquid crystal display (LCD)
 Digital voltmeters
 Filter
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 ELECTRONIC COMPONENT/DEVICES SYMBOLS
Resistors
American-style resistor (a), rheostat (variable resistor) (b), and

potentiometer (c)
IEC-style resistor
Capacitors
Capacitor
Capacitor, polarized
Capacitor, variable
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Transistors
NPN transistor
PNP transistor
n-channel junction gate field-effect transistor (JFET)
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p-channel junction gate field-effect transistor (JFET)
Metal-Oxide-Semiconductor Field-Effect Transistor

Diodes
Diode
Zener diode
Tunnel diode
Schottky diode
Light Emitting Diode (LED)
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
Photodiode
Varicap
Vacuum tubes
Vacuum tube diode
Vacuum tube triode
Vacuum tube tetrode
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
Vacuum tube pentode

Switches
Switch, Single Pole/Single Throw (SPST)
Switch, Single Pole/Double Throw (SPDT)
Switch, Double Pole/Double Throw (DPDT)

Miscellaneous
Single cell, multi-cellbattery
Inductor
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
Transformer with center tap
Silicon-controlled rectifier
Fuse: IEC (top) and American (lower two)
Phone jacks
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Self- Check: 3.3-1
Multiple Choice: Encircle the letter of the correct answer.
1. What is an electronic device use to generate physical effects when driven

by an electrical signal, or vice-versa?
a) Transducers
b) Sensors
c) Detectors
d) All of the above
2. What is an electronic device that store and release electrical charge?

a) Resistor
b) Capacitor
c) Transistor
d) Transformer
3. What is LED Stands for?

a) Light Emission Disc
b) Low Emitter Diode
c) Light Emitting Diode
d) Liquid Emitter Display
4. A transistor is an electronic device that,

a) controls electric current through a vacuum in a sealed
container
b) Conduct electricity easily in one direction
c) Pass current in proportion to voltage and oppose current.
d) Used to amplify and switch electronic signals and electrical
power.
5. What is an electronic device that measures the power of incident

electromagnetic radiation?
a) Bolometers
b) Multi tester
c) Oscilloscope
d) All of the above
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ANSWER KEY ____
1.
2.
3.
4.
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TASK SHEET 3.3-2
Title: Resistor and capacitor color coding
Performance Objective: Given (condition), you should be able to

(performance) following (standard).
Show the different color code values
Perform the value of each resistors and capacitors given
Supplies/Materials : Resistors and Capacitors
Equipment : Multitester , Magnifying glass
Steps/Procedure:
1. Identify what color of the first, second, third band of a resistor
or a capacitor and its tolerance.
2. Calculate the value of each band and tolerance of a resistor or
a capacitor
3. If your doubt of the color markings, use a magnifying glass to
identify its real color.
4. Make a conclusion what is the value of the resistor or a
capacitor.
5. To justify the real value of a resistor use a multitester. Compare
your verdict by using an analog or a digital multimeter.
Assessment Method:
Observation
Demonstration
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Performance Criteria Checklist 3.3-2
CRITERIA
YES NO
Did you….
1. Look keenly at the colors?
2. Observe the first, second and third colors
correctly?
3. Use a magnifying glass to identify its colors
correctly?
4. Compare your verdict to your multitester if you are
correct?
5.
6.
7.
8.
9.
10.
11.
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JOB SHEET 3.3-3
Title: Drawing and interpreting schematic diagrams
Performance Objective: Given (condition), ,you should be able to

(performance) following (standard).
Perform Schematic diagram drawing
Illustrate and interpret Schematic Diagrams
Supplies/Materials : Pencil, Drawing Book
Equipment :
Steps/Procedure:
6.
7.
8.
9.
Assessment Method:
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Performance Criteria Checklist ______
CRITERIA
YES NO
Did you….
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
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Evidence Plan
Competency
standard:
Unit of
competency:
Ways in which evidence will be collected:
[tick the column]
Third party Report

Demonstration &
Observation &
Questioning
Questioning
Portfolio
Written
The evidence must show that the trainee…













NOTE: *Critical aspects of competency
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TABLE OF SPECIFICATION
Objectives/Content Percentage
Knowledge Comprehension Application
area/Topics of test
TOTAL 100%
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Objectives/Content # of test
Knowledge Comprehension Application
area/Topics item
TOTAL 10 Items
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Written Test
Name:___________________________ Date:_________________ Score:___________
Direction:
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Answer Key
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Performance Test
Specific Instruction for the Candidate
Qualification
Unit of Competency
General Instruction:
Specific Instruction:
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QUESTIONING TOOL
Satisfactory
Questions to probe the candidate’s underpinning knowledge
response
Extension/Reflection Questions Yes No
1.  
2.  
Safety Questions
3.  
4.  
Contingency Questions
5.  
6.  
Job Role/Environment Questions  
7.  
8.  
Rules and Regulations  
9.  
10.  
The candidate’s underpinning  Satisfactory  Not
knowledge was: Satisfactory
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Expected Answer for Questioning Tool
Satisfactory
Questions to probe the candidate’s underpinning knowledge
response
Extension/Reflection Questions Yes No
1.  
2.  
Safety Questions
3.  
4.  
Contingency Questions
5.  
6.  
Job Role/Environment Questions  
7.  
8.  
Rules and Regulations  
9.  
10.  
The candidate’s underpinning  Satisfactory  Not
knowledge was: Satisfactory
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Templates for Inventory of Training Resources
Resources for Skills practice of Competency #1

______________________________
 Supplies and Materials As per TR As per Remarks
Inventory
 Tools As per TR As per Remarks

Inventory
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 Equipment As per TR As per Remarks
Inventory
Note: In the remarks section, remarks may include for repair, for
replenishment, for reproduction, for maintenance etc.
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WORKSHOP LAYOUT
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Competency-Based

Unit of Competencies : Assemble Electronic Products

Module No. 1 : Assemble Electronic Products

No. Unit of Competency Module Title Code

The unit of competency, " Assemble Electronic Products”, is one of

Read information sheets and complete theself-checks. Suggested

UNIT OF COMPETENCY: Assemble Electronic Products

MODULE DESCRIPTOR: This module is designed to enhance the

NOMINAL DURATION: 80 hours

1. Electronic devices and symbols

1. Electronic symbols are identified and selected according to the

The participants will have access to:

1. Drawing instruments and materials

Learning Activities Special Instructions

Read information sheet 3.3-2 Resistor

Read information sheet 3.3-3

This information sheet will define, discuss, demonstrate, illustrate and

 An electronic component/device is any basic discrete

 Electronic components have two or more electrical

There are two classifications of electronic components/devices

 Active components rely on a source of energy (usually from the DC

 Example of active components:

1. Diodes- Conduct electricity easily in one direction, among more

Opto-Isolator, Opto-Coupler, Photo-Coupler – Photodiode, BJT, JFET,

5. Display technologies- A display device is an output device for

 Filament lamp (indicator lamp)

6. Vacuum tubes (valves)- is a device controlling electric current

 Diode or Rectifier tube

7. Power sources- Sources of electrical power

 Battery – acid- or alkali-based power supply

 Passive components- can't introduce net energy into the

 Example of Passive components:

1. Resistors- Pass current in proportion to voltage (Ohm's law) and

2. Capacitors- Capacitors store and release electrical charge. They

3. . Magnetic (inductive) devices- Electrical components that use

 Inductor, coil, choke

4. Transducers, sensors, detectors - Transducers generate physical

 Sensors (detectors) are transducers that react to environmental

5. Assemblies, modules - Multiple electronic components assembled

American-style resistor (a), rheostat (variable resistor) (b), and

n-channel junction gate field-effect transistor (JFET)

Metal-Oxide-Semiconductor Field-Effect Transistor

Light Emitting Diode (LED)

Vacuum tube diode

Vacuum tube triode

Vacuum tube tetrode

Vacuum tube pentode

Switch, Single Pole/Single Throw (SPST)

Switch, Single Pole/Double Throw (SPDT)

Switch, Double Pole/Double Throw (DPDT)

Single cell, multi-cellbattery

Transformer with center tap

Fuse: IEC (top) and American (lower two)

Multiple Choice: Encircle the letter of the correct answer.

1. What is an electronic device use to generate physical effects when driven

2. What is an electronic device that store and release electrical charge?

3. What is LED Stands for?

4. A transistor is an electronic device that,

Name:___________________ Date:_ Score:___