Competency based learning material assembling and disassembling

Sector:
ELECTRONICS
Qualification:
Consumer Electronics Servicing NC II
UNIT OF
COMPETENCY
ASSEMBLE/DISASSEMBLE CONSUMERELECTRONICS PRODUCTS
AND SYSTEMS
MODULE
TITLE
ASSEMBLING/DISASSEMBLING CONSUMER ELECTRONICS
PRODUCTS AND SYSTEMS
National Certificate Level II
COMPETENCY-BASED
LEARNING MATERIAL
TECHNICAL EDUCATION AND SKILLS DEVELOPMENT
AUTHORITY
Access for Youth training and Employment Center

Qualification Level
Code BASIC COMPETENCIES
5 00 311 1 05 Participate in workplace communication
5 00 311 1 06 Work in team environment
5 00 311 1 07 Practice career professionalism
5 00 311 1 08
Practice occupational health and safety
procedures
Code COMMON COMPETENCIES
ELC724201 Use Hand Tools
ELC311201 Perform Mensuration and Calculation
ELC311202 Prepare and Interpret Technical Drawing
ELC315202 Apply Quality Standards
ELC311203 Perform Computer Operations
ELC724202
Terminate and Connect Electrical Wiring and
Electronic Circuits
Code CORE COMPETENCIES
ELC724322
Assemble/ Disassemble Consumer
Electronic Products and Systems
ELC724323
Maintain and Repair Audio/ Video Products
and
Systems
ELC724324
Maintain and Repair Electronically-
Controlled
Domestic Appliances
ELC724325 Maintain and Repair Cellular Phones

HOW TO USE THIS MODULE
Welcome to the Module “Assembling and Disassembling Consumer Electronic Products and
Systems”. This module contains training materials and activities for you to complete.
The unit of competency “Assemble and Disassemble Consumer Electronic Products and
Systems” contains the knowledge, skills and attitudes required for Consumer Electronic
Servicing required to obtain the National Certificate (NC) level II.
You are required to go through a series of learning activities in order to complete each of the
learning outcomes of the module. In each learning outcome, there are Information Sheets, Job
Sheets, Task sheets and Operation Sheets. Do these activities on your own and answer the Self-
Check at the end of each learning activity.
If you have questions, don’t hesitate to ask your teacher for assistance.
Recognition of Prior Learning (RPL)
You have already some basic knowledge and skills covered in this module because you have
been working for some time; or already completed training in this area.
If you can demonstrate competence to your teacher in a particular skill, talk to your teacher
so youdon’t have to undergo the same training again. If you have a qualification or Certificate of
Competency from previous trainings show it to him/her. If the skills youacquired are consistent
with and relevant to this module, they become part of the evidence. You can present these for
RPL. If you are not sure about your competence skills, discuss this with your teacher.
After completing this module, ask your teacher to assess your competence. Result of your
assessment will be recorded in your competency profile. All the learning activities are designed
for you to complete at your own pace.
In this module, youwillfindthe activities foryoutocomplete and relevantinformation sheets
for each learning outcome. Each learning outcome may have more than one learning activity.
This module is prepared to help you achieve the required competency, in receiving and
relaying information. This will be the source of information that will enable you to acquire the
knowledge and skills in Assembling and Disassembling Consumer Electronic Products and
Systems and independently at your own pace with minimum supervision from your teacher.
Code No.
ELC724322
Module:
ASSEMBLING/DISASSEMBLING CONSUMER
ELECTRONICS PRODUCTS AND SYSTEMS
Date Developed: Date Revised: Page # :
January01, 2013
Prepared by:
Bless T. Tajale i

Qualification : Consumer Electronics Servicing NC II
Unit of competency : Assemble/Disassemble Consumer Electronics products and
Systems
Module Title : Assembling/Disassembling Consumer Electronics products and
Systems
Introduction:
This module contains information and suggested learning activities on Assembling and
Disassembling Consumer Electronic Products and systems.
This module consists of seven (7) learning outcomes. Each learning outcome contains
learning activities supported by instructional sheets. Before you perform the instructions, read
the information sheets and answer the self-checkand activities provided to ascertain to yourself
and yourteacher that youhave acquired the knowledge necessary to perform the skill portion of
the particular learning outcome.
Upon completing this module, report to your teacher for assessment to check your
achievement of knowledge and skills requirements of this module. If you pass the assessment,
you will be given a certificate of completion.
SUMMARY OF LEARNING OUTCOMES:
Upon completion of the module the students should be able to:
LO1. Enumerate, explain and apply OHS policies and procedures in Assembling and
Disassembling consumer electronics products and systems.
LO2. Identify and explain the uses/functions of tools, equipment and testing instruments.
LO3. Identify electronic symbols and interpret schematic diagrams and parts list.
LO4. Apply soldering and desoldering techniques.
LO5. Apply wiring and cabling techniques.
LO6. Apply assembling and disassembling techniques.
LO7. Performsystematic inspection and apply specific testing procedures.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale ii

ASSESMENT CRITERIA
All standard of performance for Assembling and Disassembling Consumer Electronics
Products and systems is in accordance with Company Standard Operating Procedures and
Manufacturer’s Specification Manuals using specified tools and equipments.
1. Enumerate, explain and apply OHS policies and procedures in assembling and
disassembling consumer products and systems.
1.1 Electrical safety precautions are identified, enumerated and explained
correctly.
1.2 OHS in assembling / disassembling consumer products and systems are
defined and explained.
1.3 OHS in assembling and disassembling consumer products and systems area
demonstrated in accordance to the set procedures/ instruction.
2. Identify and explain the uses /functions of different types of tools, equipment and
testing materials.
2.1 Materials needed for assembly and disassembly are identified, prepared and
checked according to the work instructions.
2.2 Tools and equipment types and functions needed for assembly and
disassembly are identified and demonstrated according to set standards.
2.3 Testing devices and instrument operations needed for assembly and
disassembly are explained and demonstrated according to instruction
manual.
2.4 Personal Protective Equipment is used in accordance with the Occupational
Health and Safety guidelines and policies.
3. Identify Electronics Symbols and Interpret Schematics Diagrams and Parts List
3.1 Electronics Symbols are identified and selected according to the schematics
diagram.
3.2 Electronics parts value are read and matched correctly as required.
3.3 Schematic diagram sections and functions are identified and explained.
4. Apply proper Soldering and Desoldering Techniques
4.1 Workplace is prepared in accordance with OHS policies and procedures.
4.2 Required materials, tools and equipment are prepared and checked in
accordance with establish procedure.
4.3 Soldering and desoldering processes are performed in accordance with OHS
policies are procedures.
4.4 Responsible person is consulted for effective and proper work coordination.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale iii

5. Apply Wiring and Cabling Techniques
5.1 Workplace is prepared in accordance with OHS policies and procedures
5.2 Required materials tools and equipment are prepared checkedin accordance
with established procedures.
5.3 Parts and materials needed to complete the work are prepared and obtained
according to requirements.
5.4 Wiring and cabling processes are performed in accordance with OHS policies
and procedures.
5.5 Responsible person is consulted for effective and proper coordination.
6. Apply Assembling and Disassembling Techniques
6.1 Assembly workplace is prepared in accordance with OHS policies and
procedures.
6.2 Responsible person is consulted for effective and proper work coordination.
6.3 Required materials, tools and equipment are prepared and checked in
accordance with established procedures.
6.4 Parts and materials needed to complete the work are prepared and obtained
according to requirements.
6.5 Assembling and disassembling processes are performed in accordance with
OHS policies and procedures.
7. Perform Systematic Inspection and Apply Specific Testing Procedures.
7.1 Process is checked according with quality standards.
7.2 Assembled products are checked in accordance with quality standards.
7.3 Finished products are subjected to final visual inspection and testing in
accordance with quality standards, procedures and requirements.
7.4 Wok completion is documented and responsible person is informed in
accordance with established procedures.
7.5 Housekeeping procedures are observed in accordancewith 5’s discipline and
established procedures.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale iv

Module title : Assembling/Disassembling Consumer Electronics
Products and Systems
Learning Outcome : Enumerate, Explain and Apply OHS Policies and
Procedures in Assembling and Disassembling Consumer
Electronic Products and Systems
Assessment Criteria:
1. Electrical safety precautions are identified, enumerated and explained
correctly.
2. OHS in assembling / disassembling consumer products and systems are
defined and explained.
3. OHS in assembling and disassembling consumer products and systems area
demonstrated in accordance to the set procedures/ instruction.
RESOURCES:
ELECTRONICS Principles and Applications: by Charles A. Schuler
LEARNING EXPERIENCE
Learning Outcome 1: Enumerate, Explain and Apply OHS Policies and Procedures in
Assembling and Disassembling Consumer
ElectronicProducts and Systems.
Learning Activities Special Instruction
 Read the attached Information Sheet
# 1.1
“OHS Policies and Safety Procedures”
These covers the following topics:
 hazardous and risk assessment
 implementation of safety regulation
 safety systems incorporating
 safety training
 monitoring and testing procedures
 After reading Information Sheet#1.
“OHS Policies and Safety procedures”
Try to answer self-check1.1
 Youwill be assessed with
your trainer.
Performjob sheet 1.1
 Your trainer will give you
rate to yourperformance
checklist.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 1

INFORMATION SHEET # 1.1
OHS POLICIES AND SAFETY PROCEDURES
1.1-1 “Hazardous and risk assessmentmechanisms”
Specific hazards- ELEDTRICITY!!!
ELECTRIC SHOCK
Electric shock is the reflection of a living being, the passage of electrical current. Just be
a shock if the central nervous system to react and detect the passage of current. This passage of
current may not have any consequences later, but can also cause burns or cardiac fibrillation in severe
cases death.
Electric shock is an electrical shock is received when electrical current passes through the
body. You will get an electrical shock if a part of your body completes an electrical circuit by:
Touching a live wire and an electrical ground
Touching a live wire and another wire at a different voltage.
The direct consequences vary depending on several factors:
-Higher or lower potential difference (voltage- volt)
-Greater of lesser frequency (Hertz)
-Higher or lower current (Ampere)
-Electrical resistance of the body to direct current that flows by it
-Resistance between the body and the earth element Earth.
-Susceptibility of a body to a greater or lesser capacity for movement of
-Electrical power
CURRENT FLOW THROUGH THE BODY:
The tension uses the path of least resistance for potential higher contrast. If this voltage into
a living body to circulate the point where the body will have a higher potential difference physically
closer and with less electrical resistance, i.e., whether a human body has a hand in making a left and
right hand in the sector other pole current will circulate between two hands (these type of shocks are
very common in technical interventions, the technician has a hand in picking neutral element with
another shock). If on the other hand only one hand to be subject to tension, electricity tends to travel
throughout the body to leave the area of contact with earth (ground).
MINIMUM AND THAT THE BODY FEELS THE PASSAGE OF CURRENT:
These values may vary according to electrical isolation of each physical body. If there is a
use of footwear with element on high electrical resistance (rubber, wood) the body itself undergoes
changes in its electrical resistance as a function of variables such as food, you’re doing or not digestion
the level of sweating is higher or lower. These factors mean that the consequences of a shock are
different from case to case. There is however standard values that can be used as the basis of the
consequences of a shock.
Values below 50V (AC) AND 120V (DC) are considered safe but may be detected by living
bodies. These voltage values are referred to as EST (Extra Low Voltage). Tensions with values 50-
1000v (AC) or 120-1500V (DC) are in range designated for low voltage (LV) can High Voltage (HV)
the consequences of a shock can even higher.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 2

Whereas an electric shock with entrance and exit to the earth element
Duration of physical contact between the body.
Current intensity that circulates through the body.
50 HZ AC AC 60 HZ RESULT
0.5 to 1 mA 0.5 to 3 mA Begins to feel the energy circulating
1-8 mA 3-10 mA Sit back pain, muscle contraction
10-25 mA 10-40 mA Twitch, the pain tends to want to physically release the
body does not react
15-40 mA 30-75 mA Top of paralysis of the respiratory system by
asphyxiation
40-50 mA 100-200 mA Cardiac Fibrillation
100 mA 200-500 mA Heart Failures
1000 mA 1500 mA Arcs in the tissues causing internal and external burns
2 A 2 A Neurological damage
This chart should be used as indicative values with average values listed above can cause enormous damage
in people with health problems.
Depending on the muscle mass and whether a man or woman the beginning of muscle contraction is
different. The female body is more sensitive to electric shock.
Unlike what is widely diffused, is not the voltage that is dangerous but the power that circulates inthe body,
all the TV Technicians have already receive a discharge of MAT (more than 20KV), some have some scars
on the hands, but the total power is reduced, the lower risk. An appliance is the most dangerous of the
magnetron microwave, but there is a high power beyond a high voltage while the voltage is below the
transformer lines of a TV.
USE OF RUBBER BOOTS MINIMIZES THE RISK OF THE SHOCK?
Yes, the use of rubber footwear to prevent a shock through the body and go to the land,
intensity of the shock is so minor. However, if another part of the body is incontact with a negative potential
(hand on the wall, the other hand the negative or ground unit) and the intensity of the shock effects are
identical. This protection of isolating boots does not isolate high voltage (outputs high-voltage TVS,
magnetron microwave) so it does not serve as effective protection for all voltages and situations.
ELECTRICAL CHARGES
Some devices store energy (capacitor, batteries,) some capacitors for its ability shocks can
produce quite painful. Also on TVs is common to hear, the TV is off but the fly back is acrregado, this is an
error, the high voltage actually stored between the plates that make the picture tube armature condenser
(capacitor) storing very high voltage.
ELECTRIC SHOCK IN DEVICES
Until a few years ago, it was common chassis of the devices are “live”, this means that the
chassis was connected to the pole of the current input sector, the isolation was done in the case of
televisions, through two condensers placed in decision antenna, the antenna was in shock given mainly by
the poor insulation in one of these capacitors. In the current sources (switching, switched) may be
failures in this sector, leaving the sources voltage to pass the unit chassis.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 3

CONSEQUENCES THAT MAY HAVE FREQUENT SHOCK?
Electric shocks act on the nervous system and muscle, may therefore lead to irreversible
damage, however there is some scientific debate and conflicting views, some sectors maintain that a body
to receive frequent shocks causes the brain to become accustomed to react not producing the damaged
caused by less frequent shocks, there are sometheories that claim that the common shocks are be beneficial
to the cardiac system.
REDUCING ELECTRICAL HAZARDS
Electrical service cords should be in good condition.
Remove from service any equipment with frayed cords or exposed wires, never use temporary
wiring.
All electrical equipment must be grounded, used 3-pronged plugs.
Water can turn into an electrical conductor “don’t stand in water or with water on your hands
when using electrical equipment.
Follow the safe work procedures on electrical isolation and tagging.
Never bypass safety device on piece of electrical equipment.
No electrical work shall be performed except by a qualified person.
Never use temporary wiring.
Keep electrical cables in a safe and good condition away from water and traffic.
Hazards increase with the frequency of use and the harshness of the environment.
Note: always remember that there is no such a minor electric shock; they are all serious events
and each has the potential to extinguish life in seconds.
ELECTRIC FIRE RESPONSE
In case of a fire involving electrical equipment, the first action must be the isolation of the power
supply so that the circuit is no longer live.
Where it is not possible to switch off the current, the first must be attacked in a way which will not
cause additional danger.
The use of non-conducting extinguishing medium, such as carbon dioxide or powder is necessary.
After extinguishing such a fire careful watch should be kept for renewed outbreaks until the fault
has been rectified.
Re-ignition is a particular problem when carbon dioxide extinguishers are used, although less
equipment may be damaged than is the case when powder is used.
“CONTROL MEASURES”
Here are some common protectivesystems:
Fuses
Earthing
Isolation
Reduced low voltage systems
Residual current devices
Double insulation
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 4

FIRE
Fire is most destructive and hazardous that can happen anywhere. That is why when fire is discovered, immediate
and correct action is necessary to put it out quickly to prevent its spreading.
One therefore must be fire-conscious, know the causes and elements of fire, and the different fire extinguishers
used, as well as the position of the nearest fire point.
1. The three elements of fire are:
- combustible materials such as wood, paper, cardboard, gasoline, rubbish, etc.;
- oxygen in air which supports combustion;
- heat which is high enough to raise temperature of fuel to its ignition point.
2. When all three are brought together, fire results.Remove any one of them, and the fire dangerdisappears.
3. It is important to classify fires to recognize the hazards present and to select the proper extinguisher to be
used.
CLASSES OF FIRE
CLASS A
4. Fires involving solid materials, usually of an organic
nature, in which the formation of glowing embers.
Cooling the burning material with water is the most
effective way of extinguishing this type of fire.
CLASS B
5. Fires involving liquids or liquefiable solids.
The most effective way of fighting this type of fire is to
blanket or smother it, thus excluding oxygen.
Water must never be used.
CLASS C
6. Fire involving gases; and Class A and Class B fires
with the presence of electric current.
In the event of a gas leakage becoming ignited it
should only be extinguished by shutting off the
supply or plugging the leak. If it is unsafe to
approach, no further attempt should be made to
extinguish the flame in any otherway and the
assistance ofpersonneltrained in firefighting should
be sought.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 5

CLASS D
7. Fires involving metals.
Powders capable of controlling and/orextinguishing
this type of fire have now been developed.The
standard range of fire extinguishing agents is
inadequate or dangerous when dealing with metal
fires.
NOTE: ‘C’ and ‘D’ type fires should not be tackled by untrained personnel. Several types of extinguishers
described in the following pages can cause dangerous conditions when used on class ‘C and ‘D’ fires .
FIRE EXTINGUISHERS
There are five basic types of fire extinguishers in common use.
Water-filled extinguishers
8. The water-filled extinguisher is the most suitable type for use against Class A fires.
Gas Cartridge type
9. With this type, carbon dioxide gas contained in a
replaceable cartridge within the tank expels water
through the hose.
Stored Pressure type
10. With this type,water is expelled by stored pressure
in the tank. A pressure gage in the head enables the
pressure inside to be checked
Soda Acid type
11. This type is one of the early types of water
extinguisher.
Water is expelled by the action of acid freed into a
bicarbonate solution by turning the tank upside
down.
Carbon Dioxide type
12. CO2 fire extinguishers are filled with carbon dioxide.
- They are suitable for Class B fires where
contamination by deposits is to be avoided.
- They have limited application for Class A type
fire.
- They are operated by means of a trigger or lever.
NOTE: Never use a CO2 extinguisher without a discharge horn.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 6

Halon Extinguishers
13. These extinguishers are filled either with
chlorobromethane (CBM), Bromochlorodifluoromethane
(BCF) or Bromotriflouromthane (BTM) in either, gas
cartridge or stored pressure type. Since these chemicals
are electrically non-conductive,these are suitable and safe
to use on electrical fires (class C) and burning liquids
(class B).
NOTE: Always ventilate thoroughly after extinguishing a fire indoors.
Dry Powder extinguishers
14. Extinguishers filled with dry powder may be of the
gas cartridge or stored pressure type.
- They are similar in appearance to their water-
filled counterparts and have the same method of
operation. The main distinguishing feature is the
fan shaped nozzle.
- These extinguishers are suitable for use on Class
B fires where contamination of the equipment is
acceptable.
- A multi-purpose dry powder can be effective on
Class A fires provided it has a Class A rating.
USING A PORTABLE FIRE EXTINGUISHER
- Approach no closer than 1.8. from the fire.
- Grasp the extinguisher firmly and pull out the
lock pin.
- Aim nozzle at the base of the fire and squeeze the
handles.
- Use side to side motion to blanket the fire.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 7

Actions to be take if a fire starts
- Stop the fire immediately on discovery with the
first air firefighting equipment available.
- Warn everyone in the area.
- Contact your supervisorso that a warning is
issued and fire equipment is rushed to the area.
- Stop fighting the fire and leave the area if
- The fire is beyond control
- Escape route is threatened by fire
- Smoke obscures or threatens to obscure
the escape route.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 8

1.1-2 “Implementationof safety regulations”
ELECTRICdevices and circuitscan be dangerous. Safe practices are necessary to prevent electric
shock,fires, explosions, mechanicaldamage, and injuries resulting fromthe improper use of tools.
Perhaps the greatest hazard is electric shock. A current through the human body in excess of
10 milliamperes can paralyze the victim and make it impossible to let go of “live” conductor.
Human skin usually has a resistance of several hundred thousand ohms. In low voltage
systems, a high resistance restricts current flow to very low values. Thus, there is little danger of
an electric shock.
High voltage,on theother hand, canforceenough currentthrough the skinto producea shock.
The danger of harmful shock increases. Those who work on very high-voltage circuit must use
special equipment and procedures for protection.
When human skin is moist or cut, its resistance can drop several hundred ohms. Much less
voltageis then required toproduce ashock.Potentials as low as 40 voltscanproduce afatal shock
if the skin is broken! Although most technicians and electrical workers refer to 40 volts as a low
voltage, it does not necessarily mean safe voltage. You should therefore, be very cautious even
when working with so called low voltages.
Safety is an attitude.
Safety is knowledge.
Safe workers are not fooled by terms such as low voltage they do not assume a circuit is off
even the switch is in off position. They know that the switch could be defective. As your
knowledge of electricity and electronics grows, you will learn specific safety rules and practices.
SPECIFIC RULES AND PRACTICES:
1. Investigate before you act
2. Follow procedures
3. When in doubt, do not act, Ask your instructor.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 9

1.1-3 “Safety training’’
GOOD HOUSEKEEPING
1. Have a place for every tool and piece of
equipment that is not permanently located. A
storage place with enough racks and
cupboards must be provided for them.
2. Store short pieces of stock in suitable
containers or holders. Do not leave them
lying around.
3. Have an adequate supply of cotton waste,
rags and brushes for cleaning purposes.
4. Dispose waste materials in suitable
containers. A metal container must be
provided for oily or greasy materials.
5. Return equipment used to where it is stored
when not in use. Make it a habit to return
unused materials to the stock room.
6. Clean the machine before and after using it.
7. Keep your workplace clean. Oily spots on
the floor may cause you to slip and hurt
yourself.
8. Don’t leave food scraps in the work piece. It
attracts flies and rodents.
9. Remember your safety and that of the people you work with is your responsibility. Since the
safest place to work in is a clean and orderly shop, help maintain its cleanliness and
orderliness.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 10

THE PRACTICE OF GOOD HOUSEKEEPING
‘5SOF GOOD HOUSEKEEPING’
5S stands for 5 Japanese words: Seiri, Seiton, Seiso, Seiketsu, and Shitsuke.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 11

1. SEIRI
Seiri means SORT.It is actually the taking out of the unnecessary items and then
disposing them accordingly.
Steps in practicing Seiri in the workplace:
1. IMMEDIATELY THROWAWAY allthe things belonging to youwhichare not
of any use anymore.
2. DISPOSE unnecessary things belonging to other or to the company in their
proper place.
2. SEITON
Seiton means SYSTEMATIZE.Itis generally the organization or the
arrangement of necessary items of good order foruse.
Steps in practicing Seiton:
1. ASSIGN A PLACE FOREVRYTHING.In assigning a place forequipment, tools
and materials, the most often used item should be nearest ergonomically situated- meaning
there should be as little effortrequired in accessing, using and returning the equipment, tools
and parts.
2. MAKE SURE EVERYTHINGISRETURNEDINITS PLACE. Tosustain a well
organized and well arranged workplace, things must be put backin their designated places.
This should ensure that when one needs to use the things again, he/she should be able to find it
where it is supposed to be.
3. SEISO
Seiso means SWEEPor clean the workplace. It includes the regular cleaning
and protection of used machines and tools.
Seiso also means cleaning even if the things are NOT DIRTY,because a regular cleaning schedule
will prevent things from having the chanceto get dirty.
It is recommended to allot 5-10 minute everyday to clean the workplace cleaner than when it is
found.
4. SEIKETSU
Seiketsu means SANITIZE,to maintain a high standard of good housekeeping
and workplaceorganization.
STES:
1. Prepare a House Keeping Standard and Checklist. Should be very
detailed and stringent. Remember that thoroughness is a requirement of excellence.
5. SHITSUKE
Shitsuke means SELF_DISCIPLINE,doingthings spontaneously withoutbeing
told or ordered.
Doing the job alone will not be futile, unless youare not doing it effectively.
And as soon as people notice the difference youare making, they willtend to do it themselves.
And the more people practice good housekeeping, the stronger the motivationfor everyoneto
do likewise.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 12

1.1-4 Safety systems incorporating
SAFETY PRECAUTIONS AND FIRST AID PROCEDURES
The word electronics derives from the electron, which is tiny, invisible quantity of electricity
present in all materials. Electronics is the sciences that studies the behavior of electrons in devices and play
a major role for the advancement of technology.
Industrial electronics can be defined as the control of industrial machinery and processes through
the use of electronic circuits and systems.
General Safety Precautions
1. Remove power form the circuit or equipment prior to working on it.
2. Remove and replace fuses only after the power to the circuit has been deenergized.
3. Make sure all equipment is properly grounded.
4. Use extreme caution when removing or installing batteries containing acid.
5. Use cleaning fluids only in well-ventilated spaces.
6. Dispose of cleaning rags and other flammable materials in tightly closed metal containers.
7. In case of an electrical fire deenergized the circuit and report it immediately to the appropriate authority.
Safety knows how to use and take care of tools, as well as the safety procedures to follow when
using them. An awareness of the hazards is also necessary for safety. Safe handling of tools, materials,
and equipment can be learned, but awareness of safety hazards and procedures depend so much on
attitude.
GENERAL SHOP SAFETY
1. Horseplay or any form of play has no place
in the shop. It may result of serious injuries.
2. When it is necessary to approach someone
operating a machine, do so without annoying or
alarming him.
3. Concentrate on anything you do when you
are in the shop. Far away thoughts and
daydreaming is destructive. It may destroy
the job, the machine or even your life.
4. Report accidents immediately no matter how
minor it may be.
5. Notify your instructor of conditions within the
shop which you think may be dangerous
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January01, 2013
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Bless T. Tajale 13

6. Safety signs are posted to give you just one
message: Be safe.
- Danger/warning signs are placed on
machines to remind you to be extra careful
in handling them.
7. Lift with your legs not with your back, as it
may crack.
8. Keep your arms and body nearly as straight
as possible when lifting heavy objects.
NOTE: If the object is too heavy or too
bulky, seek for help.
9. Know the location of first aid equipment, the
fire extinguisher, and the main switch.
Locating them immediately may save life
and property.
10. Replace all worn-out or broken tools and
equipment at once.
11. Know the operating principles, methods of
use and safety precautions of machines,
tools and equipment before attempting to
use them.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 14

PERSONAL SAFETY PRECAUTIONS
Your personal safety is your own responsibility. Machines may cause accidents but man has
control over them to prevent these accidents. The following must be observed and practiced when
working in the shop for your own personal safety.
1. Work only in clean dry areas.
2. Do not wear loose or flapping clothing.
3. Wear only nonconductive shoes.
4. Remove all rings, wristwatches, bracelets, ID chains and tags, and similar metal items.
5. Do not use bare hands to remove hot parts.
6. Use a shorting stick to remove high voltage charges on capacitors.
7. Make certain that the equipment being used is properly grounded.
8. Remove power to a circuit prior to connecting alligator clips.
9. When measuring voltages over 300 volts, do not hold the test prods.
PERSONAL SAFETY PRACTICES
1. Wear a carpenter’s overall or any clothing
that fits well and lets you move about
comfortably.
2. Loose sleeve cuffs are dangerous especially when you work in shop
where machines are in constant motion. Roll them up above your
elbow while in the shop.
3. Do not turn up trouser cuffs. They
may catch on protruding parts.
4. Button or zip up any jackets worn inside the
shop. Unbuttoned or unzipped up jackets are
not only unsightly but are also hazards to
safety.
5. Always use clean working clothes. Dirty
working clothes may cause skin irritation and
increase the chances of skin infection should
you cut or scratch yourself.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 15

6. Do not walk around
barefooted. Wear your work
shoes, preferably those with
thick soles to protect you
against sharp objects such as
nails.
7. When working with rough materials and
materials with sharp edges, wear gloves to
protect and cuts.
8. Keep your hair short. If you wear long hair,
confine them in a hat or cap. Don’t let them
loose, as they might get caught by moving
machinery.
9. Protect your eyes by wearing goggles or
spectacles with side shields when sawing,
scraping or performing any activity where
chips or flying objects might hit your eye.
10. Wear a dust mask or respirator when
working in dusty areas and/or with chemicals
such as finishes and adhesives.
11. When working with conditions of prolonged
or high noise levels, wear an ear protector.
12. See to it that your hands are dry before you
use any power tool.
13. Do not leave left-overs and other food
scraps in your locker. It attracts insects and
rodents which is a hazard to your health and
to the people you work with.
14. Don’t spit anywhere in the shop. Fellow
trainees might slip into it. It also spreads
germs that cause illness. Spit on spit boxes
or if these are not available, make a paper
cone and spit into it. Then throw it in a waste
box.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 16

15. Make the workshop a nice and safe place to
work in, the tools, equipment and machines
in it are your friends, so maintain them and
observe safety about them.
HIGH VOLTAGE SAFETY PRECAUTIONS
1. Consider the result of each act.
2. Keep away from livecircuits.
3. Do not work alone.
4. Do not tamper with interlocks.
5. Do not ground yourself.
6. Never energize equipment in the presence of water leakage.
FIRST AID PROCEDURES:
1. Don’t Panic!!!
 Determine if there is any immediate danger to the injured person.
 Never move an unconscious person without cause.
 Lay the person FLAT.
 Keep the person warm to prevent shock.
 Never try to force liquids on an unconscious person.
 If the person is breathing normally, keep him/her still comfortable until medical aid arrives.
2. Severe electrical shock or other types of accidents may interrupt breathing. Aprocedure such as artificial
respiration (mouth to mouth resuscitation) or CPR (Cardiopulmonary Resuscitation) can be used to
stimulate the breathing process. Check for a swallowed tongue before applying artificial respiration. This
procedure should be administered by trained person if possible, and continued until medical help arrives.
3. Report all injuries to the instructor immediately. Even minor cuts can become infected, and the best first
aid supplies, nurses, doctors cannot help an unreported injury.
FIRST AID FOR ELECTRIC SHOCK VICTIM ADULT CPR
Whenever your body touched a live wire or conductors, you receive and electric shock. The
amount of current which is enough to cause an electric shock or even kill a person is as little as 1/10
ampere. An electric shock causes stopping of the heart, respiration or breathing. There are two
methods of reviving electric shock victim which can be learned in this learning element.
1. Remove the live wires from the victim by using
materials such as dry wood, plastic as shown
or pull the victim from the live wires by using dry
clothes or rope.
NOTE:
Call for the nearest doctor as soon as the
accident occurs.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 17

2. Position the victim by tilting the head back so
that his chin is pointing upward as shown.
3. Pull or push jaw into jutting out position so that
the base of the tongue is moved away from the
back of his throat as shown.
NOTE:
If possible blow through both mouth and nose
at the same time.
4. Open your mouth widely and place it tightly
over his mouth and then blow as shown.
5. Remove your mouth, turn your head and place
your ears over his chest to listen for the return
of air that indicates air exchanges.
6. If you do not get air exchange, quickly turn the
victim on his side and strike several sharp
blows between shoulder blades as shown. This
will remove foreign matter from his throat.
7. Repeat blowing effort until victim recovers.
NOTE:
For adult blow at the rate of about 10-15 times
per minute. For a child blow at the rate about
20 times per minute.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 18

BACK PRESSURE ARM LIFT METHOD
1. Position the victim by bending his elbows and
placing his hands one over the other as shown.
2. Kneel at head side of the victim. Place your
hands flat on the victims back so that the
palms lie just below an imaginary line running
between the armpits as shown.
3. Rock forward until the arms are approximately
vertical as shown and allow the weight of the
body to exert steady and even pressure down
ward upon the hands as shown.
4. Immediately draw his arms upward and
towards you applying enough lift to feel
resistance and tension at his shoulders as
shown.
ADMINISTERING FIRST AID ON COMMON WOUNDS
1. Arrest the hemorrhage by administering cold
compress over the wounded part of the
patient.
2. Prevent infection by removing bacteria already in the wound.
This is achieved thru:
- mechanical cleansing which is done by
washing the wound with soap and water and
picking out foreign matter, such as dirt, grass
and bits of cloth; and
-
- Chemical cleansing which is done by
applying antiseptics.
3. When using an antiseptic, keep in mind that you are using a substance which may be fatal or
deadly when used excessively or improperly handled. Shown below is a table which presents
each type of antiseptic.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 19

CHEMICAL CLEANSING AGENTS (ANTISEPTICS)
ANITSEPTIC ADVANTAGES DISADVANTAGES
Alcohol (grain), 70% Excellent antiseptic for
quick sterilization of
instruments, and
cleansing the hands.
95% strength is
harmful to living
tissues.
Denatured alcohol,
70%
Cleansing the skin
around a wound,
cleansing the hands
Somewhat irritating
the skin; a moist
dressing is
undesirable.
Boric acid, 2% Cleansing Little value as
antiseptic.
Carbolic acid
derivatives, Lysol and
creolin, 3%
Sterilization of
Instruments
Deadly effects on
living tissues, causes
necrosis and loads
gangrene.
Mercurochrome, 2% Not irritating to the
skin and tissues,
satisfactory for minor
wounds.
Not of great bacterial
power
Peroxide of hydrogen Cleansing suppurating
wounds
Little value as an
antiseptic
Tincture of Iodine, 2% Disinfecting wounds Serious burns may
result if strong,
because of
evaporation of the
alcohol; note
precautions.
Tincture of
Merthiolate, I: 1000
and Tincture of
Metaphen, I :1000
Possess a very high
bactericidal power and
are less irritating than
iodine.
Observe the same
precautions as those
for iodine.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 20

RESCUING AN ELECTROCUTED PERSON
1. Rescue the person as quickly as possible,
but be careful not to get into contact
with the live wire or any other
conductor.
2. If the switch is near, turn off the current. If it
is not within sight, lose no time in looking for
the switch. Every second of delay in
removing a person from contact with an
electric current lessens the chance of
resuscitating him.
3. Stay on a piece of dried board, thick dry
paper, or cloth so that you are
protected from direct contact with
the electric current.
4. Wrap one hand with dry coat, cap or either
non-conducting material. Wit your
other hand behind your back, drag
the person away.
- If you must use both hands, see to it that
they are insulated, as shown
- If an ax is available nearby, use it to cut the
wire.
NOTE:
Make sure that the ax handle is dry.
- If the patient is not breathing, start artificial
respiration at once.
NOTE:
Refer to L.E. “Artificial Respiration” for a
discussion on the steps of applying artificial
respiration.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 21

RESCUING POISONED VICTIMS
1. Administer the antidote.
NOTE:
CALL YOUR INSTRUCTOR and ask him
to show you a chart of the different
poisons and antidotes.
2. Put the patient in recumbent position.
3. Remove or loosen any article of clothing that
hampers respiration or the circulation.
4. Provide abundant fresh air.
5. Protect the body with warm blankets and apply
external heat if necessary.
6. Allay severe pain with a mild opiate.
PROCEDURES FOR VICTIMS OF INGESTED POISONS
1. Empty the stomach by means of an emetic or a
stomach tube.
2. Allay irritations by a demulcent mucilaginous
drink, such as milk and raw eggs, a weak
aqueous solution of starch, or by a bland oil,
such as flaxseed oil, olive oil, glycerin or gum
Arabic.
3. Give the patient copious amounts of warm water.
NOTE:
Never induce vomiting in persons who have
ingested poisonous substances as this will
only irritate the lining of the intestines and
cause bleeding.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 22

4. For cardiac failure, administer stimulants such
as ammonia, caffeine, or nitroglycerin.
5. For narcosis, keep the patient awake by means
of cold effusions or letting him walk
continuously.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless Tajale 23

1.1-5 “Monitoring/testingprocedures”
SAFE HANDLING OF HANDTOOLS
1. Use good quality tools and use them for the
right job they are designed to accomplish.
2. Study your tools. Learn the safe way of
working with your tools. Never use them with
jobs beyond their capacity.
3. Never use defective tools. Once issued,
inspect them and immediately replace
defective ones.
4. Keep tools at their best that is, cutting tools
should be sharp, tool handles fastened
securely, and metal parts oiled or lubricated
when necessary.
5. Tools must be placed in their designated
places. Never place them in your pockets.
6. Keep sharp-edged tools away from the edge
of a bench or work area. Brushing against
the tool may cause injury or cause it to fall
and injure a leg or foot.
7. Carry sharply edge and sharply pointed tools
with the cutting edge or point down and
outward from your body.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 24

SAFE HANDLING OF POWER TOOLS
1. Secure every material you work with. Be
sure all clamping devices are tight
before starting the machine.
2. When cutting, use only sharp blades or bits. Dull blades or bits create hazards.
3. Remove ties, rings, and wristwatches
before using power tools.
- Ties and other loose clothing might get
caught with these tools and equipment.
Rings, wristwatches, and necklaces
might get hooked on any protruding part
of the tools and equipment.
4. Be sure your hands are dry when you
are working with powered tools.
5. Turn off the power and disconnect the
cord before making any adjustments on
or inspection of the machine.
6. Check for voltage requirements before
plugging any tool or piece of equipment.
Plugging a tool to the wrong power
voltage supply may cause damage to it.
7. Ground all power tools.
- It is dangerous to use an adapter plug to
allow a 3 prong pug to be plugged in a 2-
hole outlet, unless a separate ground wire is
connected to an approved type of ground to
ensure that any short circuit will trip the
breaker or blow the fuse.
REMEMBER: Ungrounded tools can shock you.
8. Inspect electrical cords before plugging
on any tool or equipment that requires
electricity. Cover insulation breaks/chip
off with an electrical tape. The exposed
wires can cause electric shock.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 25

9. Arrange cords in a manner that they
won’t be run over or damaged.
- Do not allow them to kink.
10. Use the right size of extension cord. A
very long one will cause lose of power
(voltage drop) in an electrical tool.
11. Before throwing on the starting switch on
a machine be sure that the machine is in
condition to operate freely, that locking
devices have been released, that
adjusting instruments such as keys and
wrenches have been removed, and that
the stock would revolve or pass through
the machine easily.
12. Keep your hands away from the danger
zone, the path of the cutter. Use a push
stick, push block and other suitable
devices to advance the work.
13. Observe for any change in sound during
the operation of any tool. This normally
indicates trouble. Investigate
immediately.
14. Ensure safety in working with your tools
by seeing to it that guards are placed
properly and are in working order.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 26

15. When work is completed, shut off the
power. Leave the tool only when it has
stopped operating and has been
disconnected from the power source.
SAFE HANDLING OR MATERIALS
1. Chemicals in the form of finishes is
damaging to one’s health. In applying
finishes, wear a respirator or any mask
that will minimize their inhalation.
2. Do finishing of furniture and cabinets in a
well ventilated place.
3. Check the label of containers of finishes,
adhesives and the like for specific
cautions. Follow manufacturer’s
instructions.
4. Be sure that all flames are kept away
and that no switches or electric tools are
operated nearby when working with
adhesives and finishes.
5. Avoid getting these chemical into your mouth or eyes.
6. Store them in areas inaccessible to other
persons and where they are not
subjected to high heat.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 27

SELF-CHECK # 1.1
Direction: Selecttheletter of the bestanswer.
1. Path ofelectricity?
a. Wood
b. Plastic
c. Rubber
d. Human Body
2. Properprocedureifworkisalreadycompleted,youshould;
a. Leave the tool only when it has stopped operating and disconnect the tool to the power
source, then shut off the power.
b. Disconnect the tool to the power source before leaving the tool when it has
stopped. Then shut off the main power.
c. Shut off the main power. Leave the tool only when it has stopped operating and has been
disconnected from the power source.
d. None of the above
3. Do notworkif the flooris?
a. Slippery
b. Wet
c. Untidy
d. All of the above
4. OpenWire shouldbe?
a. Covered
b. Splice
c. Solder
d. All of the above
5. Check for ____________requirements before plugging any tool or piece ofequipment.
a. Current
b. Resistance
c. Voltage
d. power
6. Which is NOT considering to HIGH VOLTAGE SAFETY PRECAUTIONS?
a. Consider the result of each act.
b. Check the live circuits.
c. Do not workalone.
d. Do not ground yourself.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 28

7. What is CPR?
a. Cardiopulmonary Resuscitation
b. Carbonpolmonaryresuscitation
c. Cordiupulmonaryresuscitation
8. Which are not common protective systems:
a. Fuses
b. Easting
c. Isolation
9. which is not consider specific rules and practices:
a. Investigate before you act
b. Follow procedures
c. When in doubt, do not act, Ask your instructor.
d. none of the above
10.In 5s a Japanese word seiso means _________ in English.
a. Sort
b. sweep
c. standardize
d. none of the above
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 29

JOB SHEET # 1.1
THE PRACTICE OF GOOD HOUSEKEEPING
Objectives:
Upon completion of this job, you will have to perform and demonstrate 5S
Tools and Materials:
1. Brooms
2. Trash can
3. Mask
4. Checklist and Working area
Protective Materials:
1. PPE
Procedures:
Sorting:
Steps in practicing seiri in the workplace
1. IMMEDIATELY THROW AWAY all the things belonging to yourself which are not of
any use anymore.
2. DISPOSE unnecessary things belonging to other or to the company in their proper
place.
SEISO
Steps in practicing Seiso:
1. Clean the work place. It includes the regular cleaning and protection of used
machines and tools.
2. Seiso also means cleaning even if the things are NOT DIRTY, because a regular
cleaning schedule will prevent things from having the chance to get dirty.
SEITON
Steps in practicing Seiton
1. ASSIGN A PLACE FOR EVERYTHING. In assigning a place for equipment, tools and
materials, the most often used item should be nearest ergonomically situazted –
meaning there should be as little effort required in accessing, using and returning
the equipment, tools and parts.
2. MAKE SURE EVERYTHING IS RETURNED IN ITS PLACE. To sustain a well-
organized and well arranged work place, things MUST be put back in their
designated places. This should ensure that when one needs to use the things
again, he/she should be able to find it where it is supposed to be.
SEIKETSU
STEPS:
1. Prepare a House Keeping Standard and checklist. Checklist should be very detailed
and stringent. Remember that thoroughness is a requirement of excellence
2. Prepare or implement a periodic clean-up schedule.
a. daily, b. weekly, c. monthly
Problems Encountered:
_________________________________________________________________________________________________________________________
____________________________________________________________________________________________________________________.
Instructor’s Comments:
_________________________________________________________________________________________________________________________
____________________________________________________________________________________________________________________.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 30

Performance Criteria Checklist
Job Sheet 1.2-1
Criteria YES NO
1. Does the operational procedures, principles and techniques of
maintenance of tools is undertaken according to standard?
2. Does unnecessary things are properly placed?
3. Is the tasks to be undertaken are properly identified
4. Does things not in use are thrown away?
5. Does everything returned in its place?
6. Did the House Keeping Standard and checklistprepared?
Trainee’sSignature Trainer’sSignature
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 31

Module title : Assembling/Disassembling Consumer Electronics
Learning Outcome : Identify and explain the uses /functions of different types of
tools,
equipment and testing materials.
Assessment Criteria:
1. Materials needed for assembly and disassembly are identified, prepared and
checked according to the work instructions.
2. Tools and equipment types and functions needed for assembly and
disassembly are identified and demonstrated according to set standards.
3. Testing devices and instrument operations needed for assembly and
disassembly are explained and demonstrated according to instruction
manual.
4. Personal Protective Equipment is used in accordance with the Occupational
Health and Safety guidelines and policies.
RESOURCES:
LEARNING EXPERIENCE
Learning Outcome 2: Identify and explain the uses /functions of different types of tools,
Equipment and testing materials.
 Read the attached Information Sheet #
2.1
TYPES OF TOOLS, TESTING
INSTRUMENT/EQUIPMENT AND
MATERIALS AND THERE
FUNCTIONS AND OPERATIONS
 BASIC TYPES OF HAND
TOOLS
 MAINTENANCE AND CARE OF
TOOLS AND EQUIPMENT
 PERSONAL PROTECTIVE
EQUIPMENT AND CLOTHING
 After reading Information Sheet # 2.1:
 Answer self-check2.1, youwill
be assess and checkby your
trainer.
 PerformTask sheet 2.1, youwill
be rated by yourtrainer in your
performance checklist.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 32

TYPES OF TOOLS, TESTING
INSTRUMENT/EQUIPMENT AND MATERIALS AND
THERE FUNCTIONS AND OPERATIONS
2.1-1 “BASIC TYPES OF HAND TOOLS”
“SPLICING TOOLS”
 LONG-NOSED PLIER/WITH SIDE CUTTER
Needle-nose pliers (also known as Long-nose pliers and pinch-nose pliers) are both cutting
and gripping pliers used by electricians and other tradesmen to bend, reposition and cut wire. Their
namesake long gripping nose provides excellent control and reach for fine work in small or crowded
electrical enclosures, while cutting edges nearer the pliers’ joint provide “one-tool” convenience. Given
their long shape, they are useful for reaching into cavities where cables (or other materials) have become
stuck or unreachable to fingers or other means.
 DIAGONAL CUTTER PLIER
Diagonal pliers also known as Side-cutting pliers, are used for gripping, wire splicing, wire
cutting, insulation stripping, and for crushing insulation (they are generally not used to grab or turn
anything). Diagonal pliers are useful for cutting copper, brass, iron, aluminum and steel wire. These pliers
are made of tempered steel and inductive heating and quenching is often selectively hardening the jaws.
 PLIERS ASSORTED
The primary purpose of the tool known as Pliers is to grip objects firmly. The objects can then be
turned, bent, or otherwise manipulated. The types of pliers includes Engineer’s pliers for gripping metal,
flat nosed pliers for grasping smaller objects, electricians pliers for gripping electrical wires, and round
nosed pliers for bending wires into loops.
 BENT NOSE PLIER
A Bent-nose plier is used for all kinds of jewelry making methods from bending wire and metal
to grasping a jewelry finding. For whatever reason, they just sometimes feel better to use since the end is
bent to about a 45 degree angle.
“`DRIVING TOOLS”
 STANDARD/SLOTTED SCREWDRIVER
Slotted Screwdriver is used to drive or fasten negative slotted screws.
Slotted screwdriver (also known as flat head screwdriver, standard screwdriver, flared
screwdriver, and straight screwdriver) are the oldest of the drive types and was in use by the early 1800s
and is one of the most common drives you are likely to see. The flat blade of the head should match a grove
in the slotted screw.
 PHILLIPS SCREWDRIVER
Phillips Screwdriver is used to drive or fasten positive slotted screws. It is a screwdriver that
could take greater torque and could provide tighter fastenings.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 33

 ALLEN WRENCH
Allen Wrench is used to drive or fasten hexagonal screws. The head has a hexagonal hole turned
by an Allen key. An Allen key is a hexagonal shaped wrench bent in letter-L. The Allen key may have been
invented by American, Gilbert F. Heublein.
 TORX SCREWDRIVER SET
Torx Screwdriver Set is used to drive or fasten six pointed star screws. In modern electrical
appliances, they use screws with heads of non-standard shape to prevent users of the device from easily
disassembling them.
 JEWELER’S SCREWDRIVER SET
Jeweler's Screwdriver Set is a set of small screw drivers composed of slotted and Philips
screwdrivers.
“CUTTING TOOLS”
 UTILITY KNIFE
Utility Knife – is a common tool used in cutting various trades and crafts for a variety of purposes.
 STRIPPER
Stripper is a pair of opposing blades much like scissors or wire cutters. The addition of a center
notch makes it easier to cut the insulation without cutting the wire. This type of wire stripper is used by
rotating it around the insulation while applying pressure in order to make a cut around the insulation. Since
the insulation is not bonded to the wire, it then pulls easily off the end.
 TUBE CUTTER
Tube cutter – It is use to cut a tube element, especially in designing antennas (like for example,
Antenna Yagi, Hi-top antenna etc.)
 HACKSAW
Hacksaw is a saw for cutting metal. Some of them have pistol grips which keep the hacksaw firm and
easy to grip. The small hand-held hacksaw consists of a metal arch with a handle that fits around a narrow,
rigid blade. The blade has many small saw teeth along one side. It can either be attached such that the teeth
face away from the handle, resulting in sawing action by pushing, or be attached such that the teeth face
toward the handle, resulting in sawing action by pulling. On the push stroke, the arch will bend a little,
releasing the tension on the blade. The blade is normally quite brittle, so care needs to be taken to prevent
brittle fracture of the blade.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 34

“SOLDERING TOOLS”
 SOLDERING IRON
Soldering Iron is a device for applying heat to melt solder in attaching two metals parts. A
soldering iron is composed of a heated metal tip and an insulated handle. Heating is often achieved
electrically, by passing a current, supplied through an electrical cord, through a heating element. For
electrical work, wires are usually soldered to printed circuit boards, other wires, or small terminals. A low-
power iron (15-40 Watts) is suitable for this work.
Use soldering iron rated 20-40 watts. Soldering tip can be replaced with same wattage rating of
the soldering iron.
 DESOLDERING PUMP(SOLDER SUCKER)
Desoldering Pump/Sucker is the removal of solder and components from a circuit for
troubleshooting, repair purposes and to salvage components. Electronic components are often mounted on
a circuit board and it is usually desirable to avoid damaging the circuit board, surrounding components,
and the component being removed.
 SOLDERING TOOL STAND
Soldering Tool Stand is a place of the soldering iron to keep them away from flammable materials.
The stand often also comes with a sponge and flux pot for cleaning the tip.
 SOLDERING GUN
Soldering Gun is a pistol-shaped soldering tool having a trigger switch to turn it on. Operates from
117 volts ac and has an integral step-down transformer with a single-turn secondary which quickly heats
the copper soldering loop. Pistol-grip guns have trigger action control of low or high tip temperatures for
general use, with output ranges commonly rated at 100/140, 145/210, or 240/325 watts; temperature
controlled guns designed for solid-state electronics work with enter changeable power heads for varying
fixed-tip temperatures.
“BORING TOOLS”
 MINI DRILL
Mini-Drill is used to bore or drill hole in the printed circuit board (PCB).
 PORTABLE ELECTRIC DRILL
Portable Electric Drill is used for boring hole/s in the plastic chassis with the used of drill bits.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 35

 METAL FILES
A file is a metalworking and woodworking tool used to cut fine amounts of material from a work
piece. It most commonly refers to the hand tool style, which takes the form of a steel bar with a case
hardened surface and a series of sharp, parallel teeth. Most files have a narrow, pointed tang at one end to
which a handle can be fitted. A similar tool is the rasp. This is an older form, with simpler teeth. As they
have larger clearance between teeth, these are usually used on softer, non-metallic materials.
“AUXILIARY TOOLS”
 MAGNIFYING GLASS
A convex lens which is used to produce a magnified image of an object. The lens is usually
mounted in a frame with a handle (see image). Roger Bacon is the original inventor of the
magnifying glass. A magnifying glass works by creating a magnified virtual image of an
object behind the lens. The distance between the lens and the object must be shorter than
the focal length of the lens for this to occur. Otherwise, the image appears smaller and
inverted, and can be used to project images onto surfaces. The framed lens may be
mounted on a stand, keeping the lens at the right distance from the table, and therefore at
the right distance from the object on the table. The latter applies if the object is small and
also if the height is adjustable. Some magnifying glasses are foldable with built-in light.
 SCREWTESTER
Screw Tester is a tool used to indicate live wires.
 CLEANING BRUSH (paint Brush)
Paint Brush – Made of bristles set in handle,
Use for cleaning dirty parts of a circuit or an object.
 TWEEZERS
Tweezers is a device use to pick tiny components or parts when performing troubleshoot /
repair (especially in cell phone) and in assemble and disassemble consumer electronics product.
 Ball-peen Hammer
Ball-peen Hammer is a type of hammer used in metalworking. The ball-peen hammer remains useful for
many tasks such as tapping punches and chisels. The original function of the hammer was to "peen" riveted
or welded material so that itwill exhibit the same elastic behavior as the surrounding material. Specifically,
striking the metal imparts a stress at the point of impact which results in strain-hardening of that area.
Strain hardening raises the elastic limit of a material into the plastic range without affecting its ultimate
strength. A strain-hardened material will not deform under the same low stresses as a non-hardened
material.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 36

Most metals can be "worked" by such methods until they loseall of their ductile characteristics and become
strong but brittle.
 Bench Vise
A bench vise is a type of visegrip which is designed to attach to a workbench. Vise grips are tools
which are designed to be cranked shut to hold on to something. Essentially, a vise grip is like an extra pair
of hands, but unlike hands, a vise grip can exert considerable pressure, and it will never tire out or get
bored. Most vise grips consist of a pair of large jaws which can be moved closer together or further apart
with the use of a crank, with safety measures or locks which hold the visegrip shut unless the user takes a
specific action to open it.
Vise grips generally clamp onto a workbench with an adjustable clamp which can be used to move
the grip around or change the angle. Some are padded to reduce the risk of scarring the workbench, while
the jaws themselves are usually made from textured metal which provides traction and firms hold.
“Turning Tools”
a. Monkey Wrench – used for turning/fastening big nuts.
b. Adjustable Wrench – used for holding/turning nuts. Opening is adjustable.
Adjustable Wrench
c. Vice Grip Wrench – used for holding work with a locking device to avoid slipping and
causing damage to nuts.
Vise Grip Wrench
d. Pipe Wrench – used for holding and turning pipe. Also used for turning nuts, when
fastening pieces of work.
Pipe Wrench
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 37

e. Open-End-Wrench – used for tightening/loosening nuts. It has fixed and opening.
Set of Open-End-Wrench
f. Box Wrench – used for holding, tightening, loosening nuts or bolts. It completely
surrounds the bolt or nut to prevent possible slippage.
Box Wrench
g. Socket Wrench – probably the most useful tool among the wrenches. Used for
turning, tightening, loosening nuts and bolts.
Socket Wrench
h. Allen Wrench – used for fastening/removing Allen set screws.
Allen Wrench
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 38

“TESTING AND MEASURING INSTRUMENTS”
 VOLT-OHM-MILLIAMMETER (ANALOG)
A Volt-Ohm-Milliammeter, often called a Multitester.
Multitester is an instrument use to measure AC VOLTAGE, DC VOLTAGE, RESISTANCE and
small amount of CURRENT. A multitester is used as a voltage tester and a continuity tester for many
diagnostic jobs.
 CLAMP-ON AMMETER
Clamp-on ammeter is an AC ammeter with a built-in current transformer whose core can be
clamped around the conductor in which current measured.
 DIGITAL FREQUENCY COUNTER
Digital Frequency counter – An instrument in which frequency is measured by counting the
number of cycles (pulses) occurring during a precisely established time interval.
 OSCILLOSCOPE
Oscilloscope is an instrument in which the horizontal and vertical deflection of the electron
beam of a cathode-ray tube are, respectively, proportional to a pair of applied voltages. In the most usual
application of the instrument the vertical deflection is a signal voltage and the horizontal deflection is a
linear time base. An electronic “window” that displays variations of voltage at any point in a circuit by
displaying ingraphic form on its screen the actual waveform of voltage plotted against time. In addition, an
oscilloscope serves as an accurate ac/dc voltmeter and time-period counter.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 39

2.1-2 “Maintenance Procedure of hand tools”
Always allow enough time to pack up properly when you’ve finished a job. Cleaning your tools and
putting them back where they belong. Maintaining asafe and efficient work environment can save everyone
a lot of time and inconvenience.
Cleaning
Always clean your tools immediately after use.
Tools can be washed using hosepipe and/or scrubbed with a wire brush.
Make sure that there is no risk of spreading of pathogens while you are washing your tools.
Spray light oil on prone to trust.
Storage
Store tools in a dry, sheltered environment.
Place tools in racks for easy location and safety.
Place similar tools together so that people can see easily what is available.
Maintenance
Keep metal blades sharp and well-oiled.
Check any nuts, bolts, rivets, screws, blades, and springs regularly for wear or damage, and replace
if necessary.
Sand wooden parts back regularly and oil with a 50/50 linseed oil and turps mix.
Label damaged tools, place them out of the way and tell your supervisor or maintenance person.
Hand power tools safety information
Hand and power tools are a common part of our everyday lives and are present in nearly every
industry. These tools help us to easily perform tasks that otherwise would be difficult or impossible.
However, these simple tools can be dangerous, and have the potential for causing severe injuries when
used or maintained improperly. Special attention toward hand and power tool safety is necessary in order
to reduce or eliminate these dangers.
Taking care of hand tools
Hand tools are of great importance in everyday life. What they are, how to use them, what they
can be used for are significant to the worker. There are different varieties of tools and each tool has a
special use. Hand tools cost money and hence every worker should know how to take care of tools he uses.
Care of hand tools depends on many factors like as follows:
 Cleaning and Conditioning
A tool should always be kept clean and free of dust so that it remains in a good condition and a
tool in good condition gives the maximum efficiency.
Clean your tools after use
You can wash your hand tools using brush.
There should not be any risk of spreading pathogens while washing your tools.
As rust is caused by dampness or moisture, the formation of rust can be prevented by applying
light oil on those rust prone areas.
When rust forms on tools, remove it by using a fine abrasive cloth or scrubber.
The moving parts of the tools must kept working freely and hence it is necessary to lubricate the
regularly.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 44

 Storage
Tools should keep in a tool box or a tool cabinet or work bench.
Each tool should be kept in its own individual place so that it is easily accessible and can be
replaced readily after they have been used.
The compartments in a tool box or a cabinet should be designed and placed in such a way that
there is no danger of one tool coming in contact with the other.
The bench top or the working area should always be kept clear and unobstructed.
Tools should not lieidle on the floor or in the working area as they are a hazard to anyone working
there or passing by.
Sharp tools like chisels and knives should be placed in their respective holders so that there is no
danger of cutting oneself when picking in out or replacing it.
Store hand tools in a dry, sheltered environment.
Place similar tools together so that people can see easily what is available.
 Maintenance
It is important to note that a user hurts or cuts himself only when the tool is dull. A hand
tool in a good working condition will do its work efficiently without any effort on the part
of the worker. It is seen that when blades are dull. The worker has to exert great pressure
to cut, which it turns may off balance the worker leading to his slipor fall. That is why the
blades of the cutting tools should always be kept sharp.
Metal blades should be well-oiled.
Any kind of screws, blades, nuts, bolts, rivets, and springs must always be checked
regularly for wear or damage, and should be replaced if necessary.
Wooden parts hand tools are beyond your capacity to clean and maintain, then take advice
from the concerned maintenance person.
 Use
Last but not the least; tools should be used to do only that specific job for which they are
designed. For example, you cannot use a chisel as a screw driver or a screw driver as a
chisel. Such misuse is dangerous how the tools and to the person using them. You should
learn how the tool be used and for what purpose.
Review the following points:
 Use the right tool for the intended job
 Always wear safety glasses/goggles to prevent serious eye damage
 It is unsafe to add more leverage to any tool by use of an extension
 Use the shop vise when the job requires
Code No.
ELC724322
Module:
January01, 2013
Prepared by;
Bless T. Tajale 45

Handling hand tools
Keep tools clean. Check their condition before you use them. If heads of striking tools
become mushroomed or burred, have them dressed. If handles if handles are splintered,
broken or loose, have them replaced before you use the tool.
Each tool should have its own storage place. Tools must be returned to their proper places,
and not be to lie around where they could fall on, or trip you or someone else.
Carrying tools in your pockets is dangerous, especially if the tools are sharp or pointed.
Use a kit or tool or belt.
Do not use excessive pressure or force on any hand tool.
The care of hand tools
Hand tools are used every day in a construction site. They are use so much and so often that the
proper care is many times forgotten. As we listsome important points on proper care of hand tools please
refresh your memory concerning these points.
1. Take good care of tools. Use tools carefully and you will have less needs for first aid kit.
2. Keep tools clean. Protect them against damage from corrosion. Dip tools occasionally in cleaning
fluids or solvents and wipe them clean. Lubricate adjustable and moving parts to prevent wear and
misalignment.
3. Keep cutting edges sharp. Tools are much safer than dull ones.
4. When sharpening tools, redressing or repairing tools, sharpen, grind, hone, file, fit, and set them
properly, using other tools suited to each purpose.
5. For sharpening tools, either an oil stone or a grind stone is preferable.
6. Tools which are struck by hammers, such as chisels or punches, should have the head ground
periodically to prevent mushrooming.
7. When tools are not in use keep them in suitable boxes, racks, or trays. Put them down carefully an
in orderly manner on workbenches, with cutting edges turned away from you.
8. Place tools so they cannot fall and where no one can strike against or trip over them. Tools should
be placed on elevated benches, tables, or platforms so they cannot roll or be kicked or knocked off.
9. When carrying tools protect the cutting edges and carry the tools in such a way that you will not
endanger yourself or others.
10. Carry pointed or sharp-edges tools in pouches or holster.
11. Refit or replace loose or split handles. Do not rely on friction tape to secure split handles.
12. Keep handles wedged tightly in heads of all tools. Keep them smooth and free of rough or jagged
surfaces.
Avoiding hand tools injuries
Hand tools have been with us probably as long as the use of fire has. And like fire, hand
tools cause their share of injuries to users. Causes of hand tools injuries can often to some type of improper
use of a hand tool – be it manual or some type of power tool (electrical, hydraulic, gasoline, powder, etc.).
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 46

Some ways to avoid hand tool injuries:
Use the right tool for the job. Some examples of misuse of tools are using a wrench as a hammer, pliers as a
wrench, and a claw hammer as a ball pen hammer.
Keep tools in good condition, broken or worn tools (wrenches with crack or worn jaws, electric tools with
broken plugs, etc.) should be repaired or discarded.
Use tools in the way they were intended to be used (e.g., instruct users to cut away from the body when
using knives, ground ~ electric tools, etc.).
Keep tools in safe place. Many accidents have been caused by tools falling from overhead, and by sharp
tools carried in pockets or left in toolboxes with the cutting edges exposed.
Handling power tools safely
Power tools present far greater accidents hazards than hand tools. Portable power tools- because
they must be handled- are even more dangerous stationary power machinery. The most frequent accidents
are cuts, punctures, electric shock, burns and eye damage from flying particles.
Nearly all power tool accidents are due to improper handling and poor maintenance. Clean tools
regularly.
Guards are for your protection. Power tool hazards are vastly increased when workmen reject
using the guards or wedge the guard open on electric saws and other equipment.
Disconnect the power source before adjusting, oiling or changing accessories never fail to replace
the guards afterward.
When stringing temporary extension cords and hoses make certain that are protected and do not
present a tripping hazard. Make a daily check of the insulation on the wires of the power tools that you are
using and couplings on pneumatic hoses. Repair or report them if they are frayed or broken.
Every electric power tool must be grounded. This averts the possibility of the body of the operator
becoming a part of the energized circuit. Grounding is done automatically on unaltered three-pronged plugs
when the plug is inserted.
Tools should be inspected frequently for the following malfunctions:
1. Defective or broken insulation on cord.
2. Improper or poorly made connections to terminal.
3. Broken or otherwise defective plug.
4. Loose or broken switch.
5. Brushes sparking.
Guidelines for hand tools safety:
Some guidelines to avoid hand tools injuries,
 Right tool for the right job: for example, do not use a knife as a saw or a wrench as a hammer or
screwdriver as a chisel etc.
 Correct size: all tools used for specific purpose should be of the appropriate size. You should have
the correct sized tool. Forcing a small hand tool to do the job of a large one may result in tool
damage or injury.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 47

 Proper training: users should be trained to properly use the tool. The tools should be used the way
they were intended. For example: you drive a wood chisel outward and away from your body.
 Good condition: tools should be kept in good condition. Broken or worn tools should be repaired
immediately and should be discarded if no repair is possible.
 Proper storage: store tools in safe places. Many accidents occur when tools fall from overhead.
Injuries also occur when sharp tools are left in toolboxes with the cutting edges exposed or when
carried in pockets. Store all sharp0-edge hand tools with the sharp edges down.
 Watch your fingers: you should take special care when hammering so that you strike not your
fingers but the object.
 Keep tools and work area clean: it is very essential to keep your work area clean. Dirty, oily and
greasy tools after use should be clean properly. Spills and scraps from the floor should be removed
immediately after the job is done.
 Avoid using damage hand tools: Tools that have broken handles should be considered unsafe.
 Grip tools firmly: always hold hand tools securely and tightly so that they do not slip and hit
someone.
 Do not wear gloves: do not wear gloves when holding hand tools because they are bulky and make
gripping difficult.
 Protective clothing: Wear personal protective equipment likeeye, face mask, coverall appropriate
shoes, etc.
 Be alert and work defensively.
 Inspect tools before using.
 Tools with “mushroomed head” during use should be sharpened regularly.
 Keep hand tool cutting edges sharp so that the tool moves smoothly without skipping or binding.
Dull tools are considered to be more hazardous than sharp tools.
 Keep wooden handles of hand tools free of splinters and cracks.
All hazards involved intheuseofpowertools canbeprevented by followingsomebasicsafety
rules:
 Keep all tools in good condition with regular maintenance
 Use the right tools for the job;
 Examine each tool for damage before use;
 Utilize the proper protective equipment.
 Participating in safety training.
Hand tools are non- powered. They include anything from axes to wrenches. The greatest hazards posed
by hand tools result from misuse and improper maintenance.
Code No.
ELC724322
Module:
January01, 2013
Prepared by
Bless T. Tajale 48

2.1-3 “Use of protective equipmentand clothing”
PERSONAL PROTECTIVE EQUIPMENT
Health hazards in the workplaceare the major concern forboth employers and employees. It
is important, though, to remember that hazardous materials only present a health hazard when
they come into contact with your body. Hazardous materials can enter your body in three ways:
 Ingestion
 Skin absorption
 Inhalation
Because much substance which is health hazards can become airborne, knowing how to protect
you is very important.
Personal ProtectiveEquipment commonly referred to as “PPE”,is equipment worn to minimize
exposure to a variety of hazards.Examples of PPEinclude such items asgloves, foot and eye protection,
protective hearing devices (earplugs, muffs) hard hats, respirators and full body suits.
It is the employer’s responsibility to provide protective clothing and equipment. Work clothes
and specially designed protective clothing are designed for your protection. Wear the correct clothing
and equipment to protect yourself from possible serious injury. Do not interfere with or misuse any item
provided by your employer for health and safety.
 Wear plain, tough clothes that are closefitting and keep them buttoned up.
 Loose sleeves, unbuttoned or torn shirts or sweaters,ties or loose belts can easily be
caught in revolving machinery.
 Your work clothes should be cleaned regularly.
 Wear cuff less trousers
 Trouser cuffs may cause you to trip or they may catch sparks or harmful substances.
 Wear suitable footwear and keep it in good repair
 Wear safety shoes or boots with insulated sole for electrical work.
 Good uppers protect against burning from hot turning, drops of molten metal, etc.
safety shoes and boots have reinforced toecaps to protect against heavy falling objects.
 Keep long hair under a tight fitting cap or net, as required by regulations.
 It is your employer’s duty to ensure that machineries have guards to protect employees
who work closely to machine. Even, so, if your hair is long, it could be easily caught
in machinery, such as a frilling machine. Many people have been scalped in this type
of accident.
 Do not wear rings or wrist watches on the job
 Because such item can be caught on moving machinery. It is extremely dangerous to
wear them in certain types of work. You could lose fingers.
 Do not wear earrings, neck chains, pendants and bracelets.
 All items or personal jewelry worn at work have the potential to cause an accident or
aggravate an injury sustained in an accident.
 Wear personal protective equipment suited to the work to be done.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 49

PERSONAL PROTECTIVE EQUIPMENTS
Choose quality product made to a high standard (e.g. EC mark)
Choose equipment which suits the wearers consider size, fit, and weight.
Make sure it fits properly
Where more than one item of PPE is in use make sure they are compatible.
Instruct and train peoples in its use, why t is needed, when to use it and what its limitations
are.
REMEMBER YOUR SAFETY!!!
IT IS YOUR RESPONSIBILTY TO USE, MAINTAIN AND STORE YOUR PERSONAL
PROTECTIVE EQUIPMENT CORRECTLY.
PPE IS DESIGNED FOR SPECIFIC HAZARDS THAT ARE PRESENT IN SPECIFIC
CIRCUMSTANCES, CHANGE THE CIRCUMTANCES AND YOU CHANGE THE
HAZARD.
THE PPE IS ONLY AS GOOD AS THE PERSON WEARING IT!!!
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 50

“Head protection”
 Must be worn at all times within designated areas on construction and industrial sites.
 The use of helmets or hard hats on construction sites is a requirement of law and strictly
enforced.
 Helmets that have been subject to impacts or any types of damage must be replaced
immediately.
“Foot protection”
 Safetybootsfitted with steel caps must bewornat all times onentering
constructionsites.
 Safetyboots,both rubberandleather, arefitted with steel toe caps.
 Chemical resistantfootwearalso available.
“Safety glasses”
 Unbreakable lenses of plastic or tempered glass with side shields.
 For light-to moderate work.
 Can be prescription lenses contact safety department for appointment.
“Hearing protection”
 Hearing protection should be worn in all designated areas (noise in excess of 85 decibels
(dba)).
 If two people 1 meter apart must shout to be heard, the background noise is too loud (
about 85 decibels)
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 51

“Hand protection”
 Gloves should be worn whereverpossible to prevent injury and chemical contact.
 Various types of gloves are available.
 Ensure the type used is suitable for the task, particularly if working with chemical
products.
 Gloves are in no longer in use should be disposed of properly into rubbish bins.
“Respiratory protection”
 Respiratoryareaneffectivemethodofprotectionagainstdesignatedhazardswhen
properly selected and worn.
 Includesdisposablerespirators,halfmask,full facemaskrespirator,andbreathing
apparatus.
 Make sure you use the right type of respirator filter.
 If respirator is used improperly or not kept clean, the respirator can become a
hazard to you.
 Read and follow the instructions provided by the manufacturer on use,
maintenance, cleaning and care, and warning regarding the limitations of a
respirator.
 Do not wearyour respiratorinto atmospherescontainingcontaminantsforwhich
your respirator is not designed to prevent against. For example, a respirator is
designed to filter dust particles will not protect against gasses and vapors.
 Keep track of your respirator so that you do not mistakenly use someone else’s
respirator.
CARE AND MAINTENANCE OF PPE
 INSPECT FOR DAMAGE DAILY
 CLEAN AS NEEDED
 REPLACED IF BROKEN, CRACKED OR IF MATERIAL CAN’T
BE
REMOVED.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 52

TASK SHEET # 2.1
CLASSIFICATION AND IDENTIFICATION OF TOOLS AND INSTRUMENTS
Objectives:
Upon completion of this task, you will have to demonstrate in identifying and classifying hand
tools and instruments in accordance to their specifications and functions.
Direction: Follow the steps/procedures given below.
Steps/Procedures;
1. Togetherwithyourinstructor,you will begivena toolsneededin repairing
audio/videoproductsandsystems.
2. Demonstrateonhowto identifyand determinethe toolsdescriptiontheusesand
functions.
3. Hereare somecommonhand toolssamplepicturesasrequiredinaudio/video repair.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 53

Performance Criteria Checklist
Task Sheet 2.1-1
Criteria YES NO
1. Does all hand tools are identified according to its specifications?
2. Does appropriate tools are determined according to their uses and
functions?
3. Is the tasks to be undertaken are properly identified?
4. Does all testing instruments are properly checked and operated according
to their procedural operations.
5. Appropriate hand tools and testing instruments are selected to the task
requirements?
Trainee’s Signature Trainer’s Signature
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 54

B. Direction: On a separate piece of paper, classify the different kinds of hand tools
according to their specification in Consumer Electronic Servicing.
1. Desoldering Sucker/pump
2. Wire Stripper
3. Side Cutter pliers
4. Long Nose Pliers
5. Mini Drill
6. Magnifying Glass
7. Soldering Stand
8. Pliers
9. Soldering Iron
10. Portable Electric Drill
11. Bent nose pliers
12. Slotted screwdriver
13. Phillip screwdriver
14. Hacksaw
15. Screw tester
D. What are the guidelines of hand tools safety?
E. What are the factors to be followed in caring and maintaining of hand tools?
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 55

3.1-2 “Electronic Schematic Diagrams”
POWER SUPPLY SCHEMATIC DIAGRAM
A power supply is the heart of all electronics equipment. It converts AC input power line to DC
output voltage. It is the one, which supplies the desired voltage or current in a circuit. Without it all of the
electronic equipments will not function properly or dead set.
Schematic Diagram of Half-Wave Rectifier
Schematic Diagram of Full-Wave Center Tapped Rectifier
Circuit
Schematic Diagram of Full-Wave Bridge Rectifier
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 56

PCB LAYOUT
COMPONENT TYPE/WATTAGE/VALUE QUANTITY
TRANSFORMER – T1 MULTI TAPPED – 3V,4.5V,6V,9V,12V 1 PC.
RESISTOR – R1 ½ Watt – 1 K 1 PC.
ROTARY SWITCH 6-SLOTS 1 PC.
CAPCITOR – C1,C2,C3,C4 0.001UF 4 PCS.
DIODE – D1,D2,D3,D4 IN4001 4 PCS.
CAPACITOR – C5 1OOOUF or 2200UF/16V or 25V 1 PC.
LED – D5 3-5V 1 PC.
FUSE 1 A 1 PC.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 57

Internal Parts of AC-DC Power Supply
The internal parts of the AC-DC PowerSupply are shown in the Fig. 14.
Internal Parts of an AC-DC Power Supply
Parts of AC-DC Power Supply
Components Description
Alligator Clip
A special type of connectorused to connectthe powersupply to the electronic
gadget.
Capacitor
A capacitor stores electric charge. A capacitor is used with a resistor in a
timing circuit. It can also be used as a filter, to block DC signals but pass AC
signals.
Case and
Cover
It serves as a housing of an AC-DC power supply.
Diode A device which only allows current to flow in one direction.
Fuse A protective device used to prevent the circuit from short circuit or damage.
LED
Light Emitting
Diode
A transducer which converts electrical energy to light.
Line cord A type of cord used to connect the unit to the voltage source.
On-Off switch Used to on and off the circuit.
Printed
Circuit Board
PCB – a conductive pattern formed on one or both sides of an insulating base
by etching, plating or stamping.
Resistor
A resistor restricts the flow of current,forexample tolimit the current passing
through an LED. A resistor is used with a capacitor in a timing circuit.
Some publications still use the old resistor symbol:
Rotary Switch A switch that is operated by a rotating shaft.
Transformer
A component that consist of two or more coilswhich are coupled together by
magnetic induction.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 58

BOOSTER AMPLIFIER SCHEMATIC DIAGRAM
As the name implies a booster amplifier increase the gain or power originating from a much
lower power amplifier.
Input
This type of amplifier cannot amplify low output signals from tuner, microphone, etc. it has be driven by a
strong output signal say, from a lower power amplifier. The schematic diagram of a transformer-coupled
booster amplifier is shown below:
TRANSISTOR – Q1,Q2 GERMANIUM MJ2955 2 PCS.
RESISTOR – R1 5W-12 ohms 1 PC.
RESISTOR – R2 5W- 470 ohms 1 PC.
CAPCITOR – C1 ELETROLYTIC-2200UF/25V 1 PC.
TRANSFORMER – T1 INPUT PT-22 (cannon) 1 PC.
TRANSFORMER – T2 OUTPUT- 50W or 100W (cannon) 1 PC.
So far output transistors have been used. Here is an amplifier that uses NPN output transistors.
TRANSISTOR – Q1,Q2 GERMANIUM 2N3055 2 PCS.
RESISTOR – R1 5W-15 ohms 1 PC.
RESISTOR – R2 5W- 470 ohms 1 PC.
CAPCITOR – C1 ELETROLYTIC-2200UF/25V 1 PC.
TRANSFORMER – T1 INPUT PT-22 (cannon) 1 PC.
TRANSFORMER – T2 OUTPUT- 50W or 100W (cannon) 1 PC.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 58
Low
power
Amplifier
Booster
Amplifier

Qualification : ConsumerElectronics ServicingNCII
Moduletitle : Assembling/DisassemblingConsumerElectronics
LearningOutcome : Apply propersolderingand desolderingtechniques
AssessmentCriteria:
1. Workplace is prepared in accordance with OHS policies and procedures.
2. Required materials, tools and equipment are prepared and checked in accordance with establish
procedure.
3. Soldering and desoldering processes are performed in accordance with OHS policies are procedures.
4. Responsible person is consulted for effective and proper work coordination.
Resources:
http://www.aaroncake.net/electronics/solder.htm
LEARNING EXPERIENCE
Learning Outcome 4: Apply proper soldering and desoldering techniques.
 Read the attached InformationSheet #
4.1
“PROPER SOLDERING AND DESOLDERING
TECHNIQUE”
This includes:
 Basic principle of soldering
 Importance of soldering
 Tinning techniques
 After reading Information Sheet on
Propersolderinganddesoldering
technique.
 PerformJob sheet # 4.1.
 Youwill be given a performance
sheet to yourtrainer.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 59

PROPER SOLDERING AND DESOLDERING TECHNIQUE
DEFINITION OF SOLDERING
Is a connecting method in which to be soldered are first heated where solder can melt and then
joined each other with supplied solder between them, an alloy layer is formed between the solder and the
metal surface.
THREE BASIC PRINCIPLES OF SOLDERING
CLEANING – components must be kept clean.
HEATING – connecting parts must be heated to a proper temperature evenly.
SOLDERING – a proper amount of solder must be supplied to a properly heated spot.
IMPORTANCE OF SOLDERING
The most important factor involve in soldering is reliability. This is considered as assurance for the
satisfaction of our customers.
PURPOSE OF SOLDERING
 ELECTRICAL JOINING – to join two or more metals together and to achieve electrical connection
between them.
 MECHANICAL JOINING – to join two or more metals and to fix a relative position between them.
KINDS OF SOLDERING
 MANUAL SOLDERING – method of soldering which perform by man.
 AUTOMATIC SOLDERING – is an automated system that performs the application of solder paste,
pre-heating, soldering, cooling , drying, hardening of PWD using reflow machine (Ex. SMT, Pulse
Heat, Robot soldering).
WHY USE LEAD FREE SOLDER?
 We use lead free solder because this is one of the social requirements in preservation of the
environment since lead application can cause harmful effect to all living creatures.
 To help improve our deteriorating condition.
 One of the customer’s worldwide requirements for technology application.
Code No.
ELC724322
Module:
January01, 2013
Prepared by:
Bless T. Tajale 60

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