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GSM Maintenance syllabus for WAEC WASSCE | Learn | Learn by Rightal
GSM Maintenance 41 topics sit in this course for WAEC WASSCE.
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This course has 41 topics. Open practice to work through them in the WAEC WASSCE workspace.
course outline INTRODUCTION TO MOBILE PHONES AND SERVICE PROVIDERS Mobile phones acronyms and terminologies - Definition and terminologies Mobile phones acronyms and terminologies - Included terminologies (GSM, CDMA, MMS, SMS, BSI, DCT, FPS) Mobile phone bands and their uses - Single, double, tri, and quad bands Types of mobile phones - Straight, flip, slides and their maintenance needs Phone accessories and their functions - Headsets, earpiece, external Bluetooth, batteries, chargers, cables Types of menus and sub-menus - Phone book, message, call, settings, applications and their functions Service providers and their codes - Major voice service providers and service codes BASIC COMPUTER AND INTERNET CONCEPTS Introduction to computer - Definition, identification, and functions of hardware (monitor, CPU, keyboard) and software components Introduction to internet - Web access platforms (WAP, GPRS, EDGE, Wi-Fi, 3G) Browsing the web - Browsing activities like downloading, uploading ESSENTIAL COMPONENTS OF MOBILE PHONES AND THEIR FUNCTIONS Structure of mobile phones - Basic block diagram (power unit, memory unit, radio unit) and functions Hardware components - Identification, description, and functions (CPU, SIM socket, earpiece, keypad, buzzer, vibrator) Software components - Operating and application software MAINTENANCE AND REPAIR OF MOBILE PHONES
Electronic components in mobile phones - Resistors, capacitors, diodes, transistors, ICs Preventive maintenance - Definitions, functions, reasons, advantages, and procedures (cleaning, soldering, de-soldering, re-balling) Corrective maintenance Common tools and equipment for hardware repairs - Identification and uses (star, Allen key, precision set, multi-meter, oscilloscope, soldering iron, sucker) Common tools and equipment for software repairs - Identification and uses (unlocking software, flashing software, firmware installation) Safety in mobile phone workshop - Safety rules and regulations, safe use of tools, basic safety facilities (first aid box, fire extinguishers) Common hardware problems - Identification (damaged screen, charging ports, mouthpiece, earpiece, keyboard) Common software problems - Identification ('contact service provider', 'phone lock code', 'invalid SIM', 'SIM card rejected') TROUBLE-SHOOTING Basic trouble-shooting - Dissembling, assembling, testing, and trouble-shooting components (displays, speakers, vibrators, ringers, charging ports, batteries, keypads) Basic trouble-shooting - Fault finding using mobile phone menus Basic trouble-shooting - Identification of mobile phone ICs and electronic components Basic trouble-shooting - Reading of PCB circuit layout and schematic diagrams Tracing and fault finding in hardware - Identification of faulty components (visuals, continuity test, open/short circuit) Tracing and fault finding in hardware - Test voltages on PCB (voltage levels, IC pin specifications) Tracing and fault finding in hardware - Trouble-shooting techniques (metering, signal tracing/injection, component testing, visual inspections) Tracing and fault finding in hardware - Trouble-shooting Surface Mount Devices (SMD) and Ball Grid Array (BGA) Fault finding in software - Use of software codes and identifying software-related faults (SIM locked, SIM rejected, hanging problem, restart problem) Fault finding in software - Flashing of mobile phones (flashing devices, flashing software, and their uses) Fault finding in software - Phone lock, security unlocking, and resetting counters SETTING UP AND MANAGING MOBILE PHONE WORKSHOP Setting up a mobile phone workshop - Capital, personnel, and factors determining choice of location Facilities and equipment for mobile phone workshop - Identification of appropriate facilities and equipment Managing a mobile phone business - Risk analyses, costing, return on investment 
