Course contents


Course Contents.

Part 1 : Introduction to Cell Phone Repair:


  1. How Cellphone Works.
  2. Learning with Block Diagrams.
  3. Hardware Repair Techniques.
  4. Software Handling.
  5. Flashing.
  6. Unlocking.
  7. What is Unlocking, user lock, SPC, MSL, FSC, OTKSL, Flashing.
  8. GSM unlocking: using codes.
  9. GSM Flashing.
  10. using software to remove user lock, SPC.
  11. what is prl.
  12. what is ESN/MEID.
  13. Introduction to CDMA software.

Part 2: Basic Electronics Declassified:


  1. Ohm's Law.
  2. Series Circuit.
  3. Parallel Circuit.
  4. Identifying Electronics Components and Circuit Symbols.
  5. Resistors.
  6. Capacitors.
  7. Transistors.
  8. Diodes.
  9. Fuse.
  10. Coils & Inductors.
  11. Crystal Oscillators.
  12. RF & IF Amplifiers and Filters.
  13. EMI and ESD Filters.

Part 3: Tools and Test Equipments:


  1. Safety Procedures and Proper Handling of Tools and Test Equipments.
  2. How To Use and Read a Multimeter Tester.
  3. Test and Check up Procedures on Electronics Components.
  4. Preparing the Proper Tools For Repairing.
  5. Opening Tools and Tweezers.
  6. Soldering and Desoldering Tools.
  7. Muti Tester.
  8. SMD Rework Stations.
  9. DC Power Supply.
  10. Cleaning Kits.
  11. Reballing Kits.
  12. Working Table Equipments.

Part 4: Schematic Diagrams:


  1. How to Read Cellphone's Schematic Diagrams.
  2. Identifying Component Symbols and Layout in Schematic Diagram.
  3. How to Identify The Follwing:
  4. Resistor's Symbols and Layout.
  5. Capacitor's Symbols and Layout.
  6. Transistor's Symbols and Layout.
  7. Diodes Symbols and Layout.
  8. Coil Symbols and Layout.
  9. Integrated Circuit Symbols and Layout.
  10. DC to DC Voltage Drivers, Regulators.
  11. Convertes Symbols and Layout.
  12. EMI-ESD Symbols and Layout.
  13. RF Filter Symbols and Layout.
  14. Battery Cell Symbols and Layout.
  15. Power Switch , Mouthpiece, Earpiece and Ringtones Speakers.
  16. User Interface Symbols and Layout.
  17. Clock Crystal Oscillator Symbols and Layout.
  18. Fuse Symbol and Layout.
  19. Lines and Symbols on Schematic Diagram.

Part 5: SOLDERING, SOLDERING, SOLDERING:


  1. How to Find and Locate Components on PC Board.
  2. How to Solder SMD Components Manually by Hand.
  3. Master soldering on any electric board.
  4. BASICS OF SOLDERING.
  5. Advantages of Soldering.
  6. What is Soldering & de-soldering? Lead free or not?.
  7. Hand soldering vs. machine soldering.
  8. Electric tools used in soldering: Soldering machines, Hot-Air machines, Pre-heaters, Infrared machines,
  9. Rework stations...etc.
  10. Soldering tips & soldering irons.
  11. Hand tools & accessories used in soldering: magnifier, tweezers, Fume Extractor , sponges.etc.
  12. Chemicals used in soldering: flux, lead, solder wire, flux remover, tin.

Part 6: APPLICATION OF SOLDERING IN CELL PHONE REPAIR:


  1. Types of circuit boards: PCB solder types and cell phone generations.
  2. Which electronic components are found in a cell phone PCB.
  3. diode, transceiver, transistor, integrated circuit, 2 point solder joints or 3 joints multi points?
  4. Underfill & under film.
  5. Practical basic soldering trainings.
  6. Basic and intermediate applications for training.
  7. Soldering charging ports.
  8. Soldering power buttons.
  9. Soldering flex cables.
  10. Soldering SIM card trays.
  11. Memory modules.
  12. Camera modules.
  13. Battery sockets.
  14. LCD Connector modules.
  15. How to Reball BGA Chips Manually by Hand.
  16. Identifying and Familiarization of Common Mobile Phones Components and Spare Parts.
  17. LCD's Touch Screen Panels Microphones Micro Speakers Switches Charging Pins Antenna's Battery.
  18. USB connectors.

Part 7:Integrated Circuits:


  1. Understanding Major Integrated Circuits (IC) on Mobile Phones.
  2. Power Management IC.
  3. Application Processor.
  4. Flash IC.
  5. RAM IC.
  6. Hardware Handling Procedures.
  7. Proper Disassembling and Assembling Methods.
  8. How to Test Mobile phone Speaker,Buzzer or Ringer.
  9. How to Test Mobile phone Microphone or Mouthpiece.
  10. How to test Mobile Phone Charger Voltage.
  11. How to Test Mobile Phone Vibra Motor.
  12. How to check Mobile Phone Battery Voltage.
  13. How to test Power ON OFF Switch.

Part 8: LIQUID DAMAGE:


  1. Types of liquid damage: Toilet, fresh, salt, food.
  2. Tools used in treatment.
  3. Chemicals used in treatment.

Part 9 : Troubleshooting:


  1. Hardware Troubleshooting Basics.
  2. How to Troubleshoot Not Charging Issues.
  3. How charging circuit works.
  4. No Charging Response.
  5. Charger Not Supported.
  6. Not Charging.
  7. How SIM Circuits works.
  8. Insert Sim Card Problem.
  9. Invalid Sim Card.
  10. How Keypad Circuits Works.
  11. How to Map and Trace keypads Lines.
  12. Understanding The LED light Circuits.
  13. Explanation on How Audio Circuits work.
  14. Mouthpiece.
  15. Earpiece.
  16. Buzzer.
  17. Ringer.
  18. Headset.
  19. Vibra motor.
  20. How LCD Display Circuit Works.