Consumer Electronics Servicing

CONSUMER ELECTRONICS
SERVICING
ELECTRONICS
IS THE BRANCH OF SCIENCE THAT DEALS WITH THE STUDY OF FLOW
AND CONTROL OF ELECTRONS (ELECTRICITY) AND THE STUDY OF THEIR
BEHAVIOR AND EFFECTS IN VACUUMS, GASES, AND
SEMICONDUCTORS, AND WITH DEVICES USING SUCH ELECTRONS.
WHAT IS CONSUMER ELECTRONICS ?

This refers to any electronic devices designed to be purchased and
used by end users or consumers for daily and non-commercial or
professional purposes.
BASIC HAND TOOLS
THESE ARE TOOLS HELD IN THE HAND AND OPERATED WITHOUT
ELECTRICITY OR OTHER POWER.
DRIVING TOOLS
THESE ARE ANY TOOL USED TO PUSH (DRIVE) ANOTHER OBJECT.
DRIVING TOOLS
EXAMPLE:
1. SCREWDRIVERS
- are hand tools specifically
designed to insert and tighten, or to
loosen and remove screws.
KINDS OF SCREWDRIVERS
A. Slotted Screwdriver
- is used to drive or fasten
negative slotted screws.
DRIVING TOOLS
KINDS OF SCREWDRIVERS
B. Phillips Screwdriver
-used to drive or fasten
positive slotted screws. It is a
screwdriver that could take greater
torque and could provide tighter
fastenings.
DRIVING TOOLS
C. Jeweler's Screwdriver Set
-is a set of small screw drivers
composed of slotted and Phillips
screwdrivers.
SOLDERING TOOLS
It is a tool used for joining process to join different types of metals
together.
SOLDERING TOOLS
EXAMPLE:
1. SOLDERING IRON
-is a device for applying heat to
melt solder in attaching two metal parts.
A soldering iron is composed of a heated
metal tip and an insulated handle. For
electrical work, wires are usually
soldered to printed circuit boards, other
wires, or small terminals. A low-power
iron (20-30 Watts) is suitable for this
work.
SOLDERING TOOLS
2. Soldering Tool Stand
-is a place where the
soldering iron is placed during
usage. This will keep the soldering
iron away from flammable
materials. The stand often comes
with a sponge used in cleaning the
tip of the soldering iron.
SOLDERING TOOLS
3. Desoldering tool
-is used in removing
soldered wires and components
on printed circuit boards for
troubleshooting and repair
purposes.
SPLICING TOOL
IS A TOOL FOR JOINING TOGETHER THE ENDS BY WEAVING OR
OVERLAPPING.
SPLICING TOOL
EXAMPLE:
1. Long Nose is used for
holding, bending, and
stretching the lead of
electronic component or
connecting wires.
2. Side Cutter is a wire-cutting
pliers, though they are not
used to grab or turn
anything, but are used to
cut wires.
SPLICING TOOL
3. Wire 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.
BORING TOOLS
Is a tool used for enlarging a hole of printed circuit board (PCB) or other
electronic equipment.
BORING TOOLS
EXAMPLE:
1. 12V MINI-DRILL
-is used to bore or drill
holes in the printed circuit board
(PCB) with sizes from 1/32” –
1/16”.
2. PORTABLE ELECTRIC DRILL
-is used for boring hole(s) in
plastic or metal chassis with the
used of drill bits having sizes from
1/6” to approximately 1/4”.
BORING TOOLS
3. METAL FILES
-these are hand tools
having a series of sharp, parallel
ridges or teeth. Most files have a
narrow, pointed tang at one end
to which a handle can be fitted.
BORING TOOLS
Kinds of METAL FILES
FLAT FILE
is parallel in width and tapered in thickness; they are used for flat
surfaces and edges.
HALF ROUND FILE
is tapered in width and thickness, coming to a point, and is
narrower than a standard half round and used for filing inside of rings.
ROUND FILE
is also called rat-tail file which is gradually tapered and used for
many tasks that require a round tool, such as enlarging round holes or
cutting a scalloped edge.
CUTTING TOOLS
1. Utility Knife
-is a common tool used in
cutting various trades and crafts for a
variety of purposes.
2. Hacksaw
-is used for cutting metals.
Some have pistol grips which keep the
hacksaw firm and easy to grip. The
small hand-held hacksaws consist of a
metal arch with a handle that fits
around a narrow, rigid blade.
AUXILIARY TOOLS
THESE ARE TOOLS THAT PROVIDES SUPPLEMENTARY OR ADDITIONAL
HELP AND SUPPORT IN ACCOMPLISHING A TASK.
AUXILIARY TOOLS
1. Magnifying Glass
-is a convex lens which is used
to produce a magnified image of an
object. A magnifying glass works by
creating a magnified virtual image of
an object behind the lens. Some
magnifying glasses are foldable with
built-in light.
AUXILIARY TOOLS
2. Paint Brush
-made of bristles set in
handle, use for cleaning dirty
parts of a circuit or an object.
COMMON FAULTS IN USING HAND TOOLS
Pliers:
1. Do not increase the handle length of pliers to gain more leverage.
Use a larger pair of pliers or bolt cutters if necessary.
2. Do not substitute pliers for a wrench when turning bolts and nuts.
Pliers cannot grip these items properly and might cause a slip and
create an accident.
3. Never use pliers as a hammer on the handle. Such abuse is likely to
result in cracks or breaks.
Pliers:
4. Cut hardened wires only with pliers designed for that purpose.
5. Always cut the wires in right angle. Never rock from side to side or
bend wire back and forth against the cutting edges.
Screwdrivers:
1. Never use screwdrivers as a pry bar, chisel, and punch stirrer or
scraper.
2. Never use screwdrivers with broken or worn-out handles.
Screwdrivers of these kinds should have tags to indicate that it is
defective.
3. Never use pliers on a screwdriver for extra leverage. Only use wrench
or screwdrivers specifically designed for purpose.
Utility Knives/ Blades:
1. Do not use dull blades because they require more force, thus are
more likely to slip. Replace the blade when it starts to “tear” instead of
cut.
2. Never leave a knife unattended with the blade exposed.
3. Don’t bend or apply side loads to blades by using them to open cans
or loosen tight cover of containers. Blades are brittle and can snap
easily.
ELECTRONIC EQUIPMENT
1. VOLT-OHM-MILLIAMMETER
-It is an equipment that
combines three functions: as a
voltmeter that measures both ac
and dc voltages; an ohmmeter that
measures resistance; and
milliammeter that measures small
amount of dc current.
2. Oscilloscope
An oscilloscope (commonly
abbreviated CRO, for cathode-ray
oscilloscope, or scope) is a piece of
electronic test equipment that allows
signal voltages to be viewed, usually as
a two-dimensional graph of one or
more electrical potential differences
(vertical axis) plotted as a function of
time or of some other voltage
(horizontal axis).
3. Signal generator
A signal generator is a
device which produces simple
wave forms.

Consumer Electronics Servicing

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CONSUMER ELECTRONICS

WHAT IS CONSUMER ELECTRONICS ?

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