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Module 5 – Chip level mobile repairing

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Module 5 – Chip level mobile repairing

Mobile Phone Technology

  • Concept of mobile phone technology.
  • Working principal of mobile phone.
  • GSM & CDMA mobile technology
  • Study of wireless technology
  • Features of smart & basic mobile phone.

Chip Level Concepts

  • Types of IC, Microchip & Microprocessor.
  • Identification and functionality study of integrated circuits, microchip & microprocessor.
  • Identification of Processor in different types of Mobile.
  • Circuit diagrams and block diagrams
  • Soldering & D-Soldering of Microchip and IC’s.

Hands On

  • Spare parts replacements, like ringer, speaker, mic, camera, track ball, housing etc
  • Display and touch replacement practice
  • De-assembling of Mobile hand sets
  • Use of micro Iron, SMD Machines, Hotgun
  •  Soldering & d-soldering practice
  •  IC and Chip type component removing & replacing
  •  Antenna switch jumper, Track break jumper, Display cont. jumper, Drive IC jumper
  •  Removing, rebolling and replacing IC and chip by BGA machine
  •  Replacement of sim tray, charging connectors, Hand free connectors, Battery connector
  •  Bluetooth module changing practically

Software Level Concepts

What are the softwares being used in mobile phones – types and their applications

  • Installation of Application programs
  • Up gradation of version
  • Flashing / formatting through various tools
  • Secure unlocking
  • Data backup, data transfer

Fault finding and troubleshooting

  • Track reading and checking
  • Troubleshooting by use of tools like – multimeter
  • Resolving issues like sim locked, sim rejected, no network, hanging on logo, Restart problem, no vibration, battery drain out etc.

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