GSM PHONES MAINTENANCE AND REPAIRS

WAEC SYLLABUS ON GSM PHONES MAINTENANCE AND REPAIRS

PREAMBLE

This syllabus is designed to assess candidates’ basic skills of maintenance of mobile phones, in terms of knowledge and competence in fault finding and systematic repairs. It also assesses candidates’ knowledge of setting up and managing a mobile phone maintenance and repair enterprise.

AIMS AND OBJECTIVES

The aims and objectives of the syllabus are to test candidates’ knowledge and understanding of:
1. Basic concept and terminologies
2. Tracing, testing, trouble shooting, maintenance and repairs of mobile phones
3. Analyzing mobile phones PCB circuits
4. Different fault finding techniques
5. Using internet resources, data manuals, service manuals and trouble-shooting manuals
6. General safety precaution in mobile phones repair and maintenance
7. The requirement for setting up and successfully running a mobile phone maintenance and repair business

SCHEME OF EXAMINATION


There will be two papers - Paper 1 and Paper 2. The papers shall be a composite paper to be taken at one sitting.

PAPER 1:

Will consist of 40 multiple choice objective questions to be answered in 45 minutes. The paper will carry 40 marks.

PAPER 2:

Will consist of two sections, Sections A and B both lasting 1 ¾ hours and carrying a total of 100 marks.

Section A:

will comprise twelve essay questions. Candidates will be required to answer any ten of them in 55 minutes for a total of 60 marks.

Section B:

will comprise two questions on test of practical work for candidates to answer all in 50 minutes for 40 marks.

DETAILED SYLLABUS
TOPICS
CONTENTS
NOTES

A. INTRODUCTION TO MOBILE PHONES AND SERVICE PROVIDERS

1. Mobile phones acronyms and terminologies

Definition of mobile phones and its terminologies
Terminologies should include GSM, CDMA, mobile phones/cell phones/user equipment, MMS, SMS, call barring, call forwarding, BSI, DCT, FPS etc.

2. Mobile phone bands and their uses

Band—single, double, tri and quad bands and their uses.

3. Types of mobile phones

Mobiles phone types—straight, flip, slides etc. and their special maintenance needs.

4. Phone accessories and their functions

All phone accessories including; headsets/hands free, earpiece, external Bluetooth, batteries, chargers, cables etc. and their functions.

5. Types of menus and sub-menus

Menus and sub-menus including; phone book, message, call, settings, applications etc. and their functions

6. Service providers and their codes

Major voice service providers and their service codes.

B. BASIC COMPUTER AND INTERNET CONCEPTS.

1. Introduction to computer

Definition, identification and functions of various computer hardware (monitor, CPU, keyboard etc.) and software (operating and application) components.

2. Introduction to internet

Web access platform Including; WAP/GPRS/EDGE/Wi-Fi/3G etc.

3. Browsing the web

Browsing activities like downloading, uploading etc.

C. ESSENTIAL COMPONENTS OF MOBILE PHONES AND THEIR FUNCTIONS

1. Structure of mobile phones

Basic block diagram (power unit, memory unit and radio unit) and functions of each block.

2. Hardware components

Identification, description and functions of various hardware components including CPU, SIM socket, earpiece, keypad, buzzer, vibrator etc.

3. Software components

Various software components both operating and application software.

D. MAINTENANCE AND REPAIR OF MOBILE PHONES

1 Electronic components in mobile phones

Resistors, capacitors, diodes, transistors, IC, e.t.c.

2 Preventive maintenance

Definitions, functions, reason, advantages and procedures (cleaning, soldering, de-soldering, re-balling etc.) of preventive and corrective maintenance

3 Corrective maintenance

4 Common tools and equipment for hardware and software repairs.

Identify common tools and equipment for hardware repairs such as; star, Allen key, lead, precision set, multi-meter, oscilloscope, computer set soldering iron and sucker etc.
and their uses.
Identify common software tools for repair such as;
unlocking software, flashing software firmware installation etc.

5 Safety in mobile phone workshop

List safety rules and regulations.
Safe use of maintenance tools.
Basic safety facilities in the mobile phone workshop (first aid box, fire extinguishers etc.)

6 Common hardware problems

Identification of hardware problems such as damaged screen, charging ports, mouthpiece, earpiece, keyboard etc.

7 Common software problems

Identification of software problems such as; ‘contact service provider’, ‘phone lock code’, ‘invalid SIM’, ‘SIM card rejected’ etc.

E. TROUBLE-SHOOTING

1. Basic trouble-shooting

Dissembling and assembling, testing and trouble shooting of component such as displays, speakers, vibrators, ringers, charging ports, charging jacks, batteries, keypads, panels etc.
Trouble shooting/fault finding using relevant mobile phone menus.
Identification of mobile phone ICs and electronic components.
Reading of PCB circuit layout and schematic diagrams.

2. Tracing and fault finding in hardware

Identification of faulty components (using visuals, continuity test, open circuit, short circuit etc.)
Test voltages on PCB (voltage levels at various points and voltage specification of IC pins)
Trouble-shooting techniques—metering methods, signal tracing/injection, component testing, visual inspections etc.
Trouble shooting Surface Mount Devices (SMD)/ Ball Grid Array (BGA) etc.

3. Fault finding in software

Use of software codes for faults finding.
Fault find related to software (SIM locked, SIM rejected, hanging problem, restart problem etc.)
Flashing of mobile phones—flashing devices, flashing software and their uses Phone lock/security unlocking/resetting counters

F. SETTING UP AND MANAGING MOBILE PHONE WORKSHOP

1. Setting up a mobile phone work shop

Capital, personnel and factors that determining choice of location

2. Facilities/equipment for mobile phone workshop.

Identify appropriate facilities/equipment for a mobile phone workshop.

3. Managing a mobile phone business

Risk analyses, costing, return on investment etc.
SUPERVISED APPRENTICESHIP (INDUSTRIAL TRAINING)
Candidates are required to spend a minimum cumulative total of eight weeks of apprenticeship in an accredited repair and maintenance centre.

LIST OF MINIMUM ITEMS OF EQUIPMENT FOR A CLASS OF FIFTY CANDIDATES
ITEM NO
EQUIPMENT
QUANTITY REQUIRED

1.

Scrap mobile phone/Mobile phone parts

10

2.

Mobile phone manuals

10

3.

Mobile phone

50

4.

Chat of service codes

1

5.

Phones accessories (various types)

25

6.

Data cable (various types)

25

7.

Oscilloscope

2

8.

Multi-meter(Analog/digital)

10

9.

Brush

25

10.

Soldering iron

10

11.

Safety chart

1

12.

Hammer

25

13.

Spanner(various types)

25

14.

Tweezer

10

15.

PCB Board holder

25

16.

Cutter

25

17.

Magnifying desk lamp

10

18.

Ultrasonic cleaner

1

19.

Re-balling kits (Chat)

5

20.

Flashing and unlocking devices

2

21.

Cables and wires

Assorted

22.

DC Regulated power supply

2


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