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RADIO & TV TECHNICIAN

1. INTRODUCTION

This Technician level course in Radio & Television field will rouse keen interest in learning skills for those who like it. School dropouts who cannot continue their education, can take up this trade and settle as a skilled technician in this field.

2. OBJECTIVES OF THE COURSE

1. Know the various electronic components.

2. Understand the assembly of parts as per the given circuit.

3. Fabricate circuits for various uses.

4. Identify the faults in any electronic circuit and able to rectify.

3. SKILLS TO BE PROVIDED

1. Can be able to identify the electronic components.

2. Able to prepare list of components for a given circuit.

3. Assemble the parts as per circuit.

4. EMPLOYMENT OPPORTUNITIES

[A] WAGE EMPLOYMENT

1. Electronic servicing shops.

2. Information and Public Relation Department.

3. Television Studio.

[B] SELFEMPLOYMENT

Can run own servicing shop.

5. Schemes Of Instruction Per Module

	Theory		On Job Training		Total
Module
	Hours Weightage		Hours Weightage		Hours Weightage
I	72	30	216	70	288	100
Total	72	30	216	70	288	100

Schemes Of Instruction Per Week

Module	Theory	On the Job Training	Total
Modules I/II/III	6 Hours	18 Hours	24 Hours

6. SYLLABUS

MODULE – I
STUDY OF ELECTRONIC COMPONENTS

Week	Theory	On the Job Training
^I	Identification of resistors	Colour code Identification of
	a. Carbon film resistors b. Metal film resistors	1 w, 1w, 1w, ----- ----- ---- 1w, 2 w
		8 4 2
	c. Wire wound resistors	Resistors with Colour code (carbon, metal
	d. Variable linear, logarithmic	film) wire wound resistors 5w to 1000w
	(volume controllers)	identification Both fixed & variable.
II	Multimeter	Measurement of resistance with Analog &
		Digital Multimeter with different ratings
	Measurement of resistance, current, voltage	Voltage measurement AC, DC, current
	(AC, DC) with different ratings	measurement AC&DC voltages, switches testing & Applications.
III	Inductors and transformers AF, RF, HF coils power transformers step up, step down EHT	Identification of coils Range – AF, RF, HF, identification of transformer winding & leads
	transformer	Primary & Secondary with tapping terminals.
	AF, RF,HF, IFT’s.	Identification of AF, RF, HF, IFT’s and applications.
IV.	Capacitors:	Identification of capacitance with Colour code, testing of capacitor with Multimeter
IV.
	Colour coding of capacitors & types –	Identification of different types of capacitors.
	Paper, Mica, Ceramic, Electrolytic, Polystyrene capacitors.	Identification of switches, testing with meter
		(digital & analog)
	Switches & Fuses:	Identification of poles continuity with switches
	a) Types – SPST,SPDT, DPST,DPDT b) Fuses with different current ratings	OFF & ON position Identification of fuses, testing with meter.
V.	Wires and cables	Identification of wires single, Ribbon, cable, feeder wire, coaxial cable, power chords with
	Types – Ribbon cable, single, stand wire, feeder, wire coaxial cable, power chords with	different current ratings.
	different current ratings Adaptors connectors.	Study of different types of adaptors, connectors, testing with meter.
VI	Microphones and loudspeakers	Identification of Microphones different types –
	a) Types of Microscopes carbon, condenser, dynamic, Ribbon, crystal	Carbon, Condenser, dynamic, Ribbon, Crystal, chordless – Testing with meter.
	chordless Mikes. Types of Land Speakers. PMMC (Dynamic), Horn Loud Speaker, woofer, tweeter, Mid	Identification of different speakers – PMMC, Horn, Woofer, tweeter, Mid Ranges, column speaker – Identification of different parts of a
	Range, Column Speakers.	speaker – Testing with meter.

VII.	Semi conductors	Identification and testing of PN junction Diode, Zener Diode, Tunnel Diode, LED,
	Diodes – PN Junction	Varicap.
	Diode, Zener, Diode, Tunnel Diode, LED, Varicap – Application.	Study of characteristics, Data sheets.
		Identification of transistor leads, Study of CB, CE, CC characteristics
	Transistors	Testing of Transistor with meter
	PNP, NPN – different types.	Study of Data sheets.
VIII.	SCR, DIAC, TRIAC, FET (Families)	Identification of SCR, DIAC, TRIAC, FET, and
		UJT leads.
	UJT symbols, characteristics and Application.	Study of characteristics on demonstration
		Boards, Data sheets
		Testing of above devices with meter
IX.	-DO- with data sheets	Study and Applications
X.	Power	Assembling of Half wave, Full wave, Bridge
	supplies	Rectifier using Filter circuits.
	Half wave, full wave, Bridge rectifies with
	filters – type.	Assembling and testing of regulated power
	L – type, LC filters Applications a. Zener diode regulator	supply.
	b. Transistorized regulator.	a. Zener diode b. Transistorized
XI.	Amplifiers (AF,RF and HF)	Identification of Amplifiers based on coupling
	Amplifiers with different types of coupling RC,	RC, RL, LC, transformer coupling.
	RL, LC, Transformer coupling, direct coupled amplifiers.
XII
	Servicing tools & instruments	Study of Nose pliers, cutting pliers, screw driver set, preset driver set, files.
	Assembling of circuits	Identification of soldering Iron, working lead, paste, cutter, de-soldering pump.
		Soldering practice on PCBs
		Fixing of Switches, capacitors, transformers, fuses, front panel controls on cabinet.
	Wiring of the components on the PCB	Wiring of resistors, capacitors, coils, transformers, switches, fuses, microphones loud speakers on the PCB.

MODULE – II
INTRODUCTION TO IC’s

Week	Theory	On the Job Training
I	Multi stage Amplifiers Applications	Identification of Multi Stage Amplifiers – Testing.
II	Oscillators – types Hartley, Colpritts, tuned collector, RC	Testing of different types of oscillators Hartley, Colpritts, Tuned Collector, RC Phase shift, wein
	Phase shift, wein Bridge Oscillators –	bridge oscillator.
	Applications.
III.	Classification of IC’s – SSI, MSI, LSI, VLSI	Identification of IC’s Pin diagram, Identification of
	used in Radio, tape recorder, stereos, TV’s.	Analog and Digital IC’s used in Radio, Tape
		Recorder and TV’s
		Study of IC Data sheets
IV	Radio Receivers transistor Radios.	Study of Transistor Radios Identification of
		Stages Mixer, Oscillator, RF, IF Detector, AF Power Output, Loud speaker.
V.	Radio receivers IC based tracking, Tuning	Identification of IC’s used in Radios. Tracking &
	Tape recorder	Tuning Radio.
		Identification of tape Recorder circuit –
		Identification of common stages in Radio- cum‑
		Taper Recorder.
		Tape Transport Mechanism.
VI	Two-in-one Radio-cum-Tape Recorder.	Identification of IC’s used in two-in-one’s Data sheets
		Identification Servicing controls
		Fault finding.
VII	Stereo System IC based with different power	Identification of Stereo
	ratings.	System – Circuit with Block diagram – working of each block – fault finding methods.
VIII	Black & white TV 14” and 18”	Identification of different stages of B/W TV 14” &
		18” with servicing controls using kits on demonstration models.
		Fault Finding.
IX	Colour TV 14” and 18”	Identification of different blocks in a Colour TV
	Receivers	receivers 14” and 18” with servicing controls using Demonstration kits – Fault Finding.
X	Electronic Appliances – Emergency Light	Study of Emergency Light, Electronic Stabilizer, Battery Eliminator circuits, with servicing controls
	Electronic Stabilizer	– Fault Finding.
	Battery Eliminator

XI	Inverters, Servo Stabilizers – UPS	Identification of Inverter with block diagrams, servicing controls – Fault Finding.
	Maintenance
		Identification of stages of Servo Stabilizer UPS with servicing controls – Fault finding.
XII	Telephones	Identification of PCB’s used in different types of
	a. Landline Telephone	phones – Fault finding
	b. Cordless phone c. Wireless phone d. Cell phone e. Will phone	Procedures of each one them.

MODULE – III
MAINTENANCE OF ELECTRONIC DEVICES

Week	Theory	On the Job Training
		Maintenance and servicing of Radio Receivers –
I	Maintenance and servicing of radio receivers’	Fault finding procedures – Rectification methods
	demonstration.	- 6 days
		Maintenance and servicing of tape recorder fault
II	Maintenance and servicing of Tape recorder	finding procedures
	demonstration	Rectification methods
		- 6 days.
		Maintenance and servicing of Stereo fault finding
III	Maintenance and servicing of Stereo systems	procedures Rectification methods
	demonstration.	- 6 days
IV	Maintenance and servicing of speaker boxes, uses and applications	Maintenance and servicing of speaker boxes, fault finding – Rectification methods - 6 days
	Demonstration
		Maintenance and servicing of Stabilizer fault
V	Maintenance and servicing of Stabilizers	finding – Rectification methods
	demonstration	- 6 days
VI	Maintenance and servicing of Telephone, cell	Maintenance and servicing of telephone, cell
	phone demonstration	phone fault.
		Maintenance and servicing of Emergency light‑
VII	Maintenance and servicing of Emergency	fault finding – Rectification methods
	light-demonstration	- 6 days
VIII	Inverters & UPS	Maintenance and servicing of Inverters & UPS
	Maintenance and servicing procedures –	fault finding procedures Rectification methods
	Demonstration	– 6 days
		Maintenance and servicing of B/W TV receivers
IX	B/W TV Receivers – 14”, 18” models	fault finding – Rectification methods
	Maintenance & servicing procedures	- 6 days
	Colour TV receivers 14”,18” models	Maintenance and servicing of Colour TV
X	Maintenance and servicing procedures –	Receivers fault finding – Rectification methods
	Demonstration.	- 6 days
XI	VCP, VCR, Panel controls and servicing	Setting of panel controls and servicing controls of
	controls demonstration	VCP, VCR maintenance of VCP,VCR
		Rectification methods
		- 6 days
XII	CD Players – Panel controls and servicing	Setting of Panel controls and servicing controls of
	controls – Demonstration	CD players maintenance of CD players
		Rectification methods –
		- 6 days

7. LIST OF TOOLS AND EQUIPMENT REQUIRED

Cutting player	5 Nos.
Nose pliers	5 Nos.
Nose cutters	5 Nos.
Tweezers	5 Nos.
IC tweezers	5 Nos.
Screw Driver set	5 Nos.
Preset Driver	5 Nos.
Knives	10 Nos.
Adjustable spanner	10 Nos.
Work benches	10 Nos.
Soldering rods 25w, (with stand)	10 Nos.
Soldering rods 60w, (with stand)	10 Nos.
De-solder pump	10 Nos.
Files	10 Nos.
Transistorised regulated Power Supply	5 Nos. (0-3oV,1 A)
Rheostats (Potentio meter) (10W)	5 Nos.
Multimeters (Analog)	10 Nos.
Multimeters (Digital) Samsung	10 Nos.
CRO (20MHZ)	2 Nos.
Digital Frequency Counter	2 Nos.
Digital L.C.R. Meters	5 Nos.
AF Power output meters	2 Nos.

EXPERIMENTAL BOARDS

PN Junction Diode Board	2 Nos.
Zener Diode	2 Nos.
Transistor characteristics	2 Nos.
2 stage RC coupled Amplifier	2 Nos.
SCR Characteristics Board	2 Nos.
UJT Characteristics Board	2 Nos.
FET Characteristics Board	2 Nos.
Tuned Collector Oscillator Board	2 Nos.
Hartley oscillator Board	2 Nos.
Colpitts oscillator Board	2 Nos.
Crystal oscillator Board	2 Nos.
Wein bridge oscillator Board	2 Nos.
Push pull Amplifier Board	2 Nos.
Class A Power Amplifier Board Class	2 Nos.
B Power Amplifier Board Class C	2 Nos.
Power Amplifier Board AM Radio	2 Nos.
Demonstration Model (Transistorised – 3	6 Nos.
Nos., IC based – 3 Nos) AM, FM Signal	2 Nos.
Generator Test Oscillator	2 Nos.
Stereo Demonstration model	2 Nos.
(IC based)	50 Nos.
Audio Cassettes	2 Nos.
14” B/W Portable TV demonstration model	2 Nos.
Colour TV 14” Portable demonstration model	2 Nos.
18” B/W TV demonstration model 18”	2 Nos.
VCP	2 Nos.
VCR	2 Nos.
CD Player	2 Nos.
CD’s (Audio, Video)	10 Nos.
Emergency Light	12 Nos.
(6w, 10w, 20w)	8 Nos.
Electronic Stabilizers demonstration model	10 Nos.
(1AMP – 4 Nos., 5 AMP – 4 Nos.)	6 Nos.
Battery Eliminators	3 Nos.
Public Address Amplifiers (60w,80w, 1 20w)	10 Nos.
Column loud speakers with Cross-over network	3 Nos.
Telephone demonstration model	5 Nos.
(with different models including chordless)	5 Nos.
Two-in-one’s	5 Nos.
Inverters demonstration model	5 Nos.
UPS demonstration model
Batteries (charging type)
(with suitable current ratings)
IC Testers
Semiconductor data sheets

8. REFERENCE BOOKS

A second-class degree in Engineering B.E./ B. Tech / AMIE with Electronics & Communication Engineering with 50% of marks.

A First Class Diploma in Electronics and Communication from State Board of Technical Education with 3 years practical experience in Assembling, testing or Servicing maintenance of Electronic Instruments.

Skilled technician in Electronics field such as Assembling Testing and Servicing maintenance of Electronic Instruments

A ₁st Class pass Radio & TV Intermediate Vocational course or ITI with Electronics / Radio & TV.

1. Electronic Components by Sri. D.V. Prasad.

2. Principle of Electronics by Sri. V.K. Mehta.

3. Basic Electronics by Sri. S. Rama Bhandari.