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, interms of knowledge and competence in fault finding and systematic repairs. It also assessescandidates’ knowledge of setting up and managing a mobile phone maintenance and repairenterprise.

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 andrepair business

SCHEME OF EXAMINATION


There will be two papers - Paper 1 and Paper 2. The papers shall be a composite paper to betaken 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 carryinga total of 100 marks.

Section A:

will comprise twelve essay questions. Candidates will be required toanswer 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 toanswer all in 50 minutes for 40 marks.

DETAILED SYLLABUS

TOPICSCONTENTSNOTES

A. INTRODUCTION TO MOBILEPHONES AND SERVICEPROVIDERS

1. Mobile phones acronyms andterminologies

Definition of mobile phones and itsterminologies
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 andtheir uses.

3. Types of mobile phones

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

4. Phone accessories and their functions

All phone accessories including;headsets/hands free, earpiece, externalBluetooth, batteries, chargers, cables etc. andtheir functions.

5. Types of menus and sub-menus

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

6. Service providers and their codes

Major voice service providers and theirservice codes.

B. BASIC COMPUTER ANDINTERNET CONCEPTS.

1. Introduction to computer

Definition, identification and functions ofvarious 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 OFMOBILE PHONES AND THEIRFUNCTIONS

1. Structure of mobile phones

Basic block diagram (power unit, memoryunit and radio unit) and functions of eachblock.

2. Hardware components

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

3. Software components

Various software components both operatingand application software.

D. MAINTENANCE AND REPAIR OFMOBILE PHONES

1 Electronic components in mobilephones

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

2 Preventive maintenance

Definitions, functions, reason, advantages andprocedures (cleaning, soldering, de-soldering,re-balling etc.) of preventive and correctivemaintenance

3 Corrective maintenance

4 Common tools and equipment forhardware and software repairs.

Identify common tools and equipment forhardware 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 repairsuch as;
unlocking software, flashing softwarefirmware installation etc.

5 Safety in mobile phone workshop

List safety rules and regulations.
Safe use ofmaintenance tools.
Basic safety facilities inthe mobile phone workshop (first aid box, fireextinguishers etc.)

6 Common hardware problems

Identification of hardware problems such asdamaged 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 andtrouble shooting of component such asdisplays, speakers, vibrators, ringers, chargingports, charging jacks, batteries, keypads,panels etc.
Trouble shooting/fault finding using relevantmobile phone menus.
Identification of mobile phone ICs andelectronic components.
Reading of PCB circuit layout and schematicdiagrams.

2. Tracing and fault finding inhardware

Identification of faulty components (usingvisuals, continuity test, open circuit, shortcircuit etc.)
Test voltages on PCB (voltage levels atvarious points and voltage specification of ICpins)
Trouble-shooting techniques—meteringmethods, signal tracing/injection, componenttesting, 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.
Faultfind related to software (SIM locked, SIMrejected, hanging problem, restart problemetc.)
Flashing of mobile phones—flashing devices,flashing software and their usesPhone lock/security unlocking/resettingcounters

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F. SETTING UP AND MANAGINGMOBILE PHONE WORKSHOP

1. Setting up a mobile phone work shop

Capital, personnel and factors thatdetermining choice of location

2. Facilities/equipment for mobilephone workshop.

Identify appropriate facilities/equipment for amobile phone workshop.

3. Managing a mobile phone business

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

LIST OF MINIMUM ITEMS OF EQUIPMENT FOR A CLASS OF FIFTYCANDIDATES

ITEM NOEQUIPMENTQUANTITY 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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