UNDERSTAND MOBILE HARDWARE REPAIR - From Noob To Professional

JARVIS

• Mobile Devices Hardware (In Further Text \"HW\") Is Not So Familiar To Understand For Many Users
  
• Lot Of Smartphone Users(Specially Devs) Have Basics Knowledge About How Mobile Device HW Works And Communicate With Software
  
• In This Thread I Will Try To Expain You Better How Mobile HW Works - From First Cellphones To Newest Smartphones (Basics Are Almost Same)
• 
  
• Big Thanks To GSM Server(Gsm Hosting),Zfrank,CellPhoneRepairTutorials Blog,BalcanGSM And All Mobile HW Enthusiasts Who Bring Us Those Tutorials
  
  
  

Note:

I\'m Not Liable Or Take No Responsibility For Cause Of Any Damaged Occurs In Your Device And You Need To Understand That What You Are Doing This Is At Your Own Risk,
Including Loss Or Void The Warranty Of Your Mobile Phone.

Do Not Attempt To Dismantle Your Mobile Phone Unless The Warranty Period Already Expired.

Your Mobile Phone Is Your Own Personal Property, It Is Up To You Who Decide What To Do About It.

Some Files Used In This Guides Were Not Owned Nor Hosted And Uploaded By The Various Authors But Only Links From Other Websites.

All Copyrights And Trademarks Belongs To All Respective Legal Copyrights And Trademarks Owners.


Every Mobile Phone, Gsm Modem Or Device With A Built-In Phone / Modem Has A Unique 15 Digit Imei Number. Based On This Number, You Can Check Some Information About The Device, Eg Brand Or Model.

CHECK IMEI LINK

CLICK ON TUTORIAL NAME WILL LEAD YOU TO ARTICLE

LESSON 01

Basic Information How Cellphone Works?

Learning With Block Diagram On How BasicallyCell-Phone Works?


LESSON 02

Introduction To Basic Electronics

Ohm\'s Law

Series Circuit

Parallel Circuit

Identifying Electronics Components And  Circuit Symbols

Resistors

Capacitors

Transistors

Diodes

Fuse

Coils & Inductors

Crystal Oscillators

Rf & If Amplifiers And Filters

Emi And Esd Filters


LESSON 03

Preparing The Proper  Tools For Repairing

Opening Tools And Tweezers

Soldering And Desoldering Tools

Muti  Tester

Smd Rework Stations

Dc Power Supply

Cleaning Kits

Reballing Kits

Working Table Equipments


LESSON 04

Safety Procedures And  Proper Handling Of Tools And Test Equipments On Cellphone Repair

How To Use And Read A Multimeter Tester

Test And Check Up  Procedures ON Basic Electronics  Components


LESSON 05

Introduction ToReading  Cellphone\'s Schematic Diagrams

Identifying Component Symbols And Layout In  Schematic Diagram

How   To Identify Resistor\'s Symbols And Layout

How   To Identify Capacitor\'s Symbols And Layout

How    ToIdentify  Transistor\'s Symbols  And Layout

How    To Identify Diodes Symbols And Layout

How    To Identify Coil Symbols And Layout

How   To Identify   Integrated  Circuit Symbols And Layout

How   To Identify Dc To Dc Voltage Drivers, Regulators AndConvertes  Symbols  And Layout

How   To Identify Emi-Esd Symbols And Layout

How   To Identify Rf Filter Symbols And Layout

How   To Identify Battery Cell Symbols And Layout

How   To Identify Power Switch , Mouthpiece, Earpiece And Ringtones Speakers   User Interface Symbols And Layout

How   To Identify Clock Crystal Oscillator Symbols And Layout

How   To Identify Fuse Symbol And Layout

How  To Identify The Lines And Symbols On Schematic Diagram


LESSON 06

How To Find And Locate Components On Pc Board

How  To Solder Smd Components Manually By Hand

How To Reball Bga Chips Manually By Hand

Identifying And Familiarization Of Common  Mobile Phones Components And Spare Parts

Liquid Crystal Display Lcd\'s Touch Screen Panels Microphones Micro Speakers

Switches Charging Pins Antenna\'s Batteries Battery Connectors Usb Connectors

Familarization:   Components And Parts On Nokia Mobile Phone Handsets

Familarization:  Components And Parts On  Samsung  Mobile Phone Handsets

Familarization:   Components And Parts On Sony Ericsson Mobile Phone Handsets

Familarization:  Components And Parts On  Motorola Mobile Phone Handsets

Familarization:  Components And Parts On  Iphone  Mobile Phone

Familarization:  Components And Parts On  Blackberry Mobile Phone Handsets

Familarization:  Components And Parts On Htc  Mobile Phone Handsets

Understanding Major Integrated  Circuits (Ic) On Mobile Phones :

Power  Management Ic

Application  Processor

Flash  Ic

Ram  Ic


Basic Hardware Handling Procedures

Proper Disassembling And Assembling Methods

How To Test Mobile Phone Speaker,Buzzer Or Ringer

How To Test Mobile Phone Microphone Or Mouthpiece

How To Test  Mobile Phone Charger Voltage

How To Test  Mobile Phone Vibra Motor

How To Check Mobile Phone Battery Voltage

How To Test Power On Off Switch


Hardware Troubleshooting Basics

How To Troubleshoot Not Charging Issues :

How Charging Circuit Works

No Charging Response

Charger Not Supported

Not Charging

How Sim Circuits Works

Insert Sim Card Problem

Invalid Sim Card

How Keypad Circuits Works

How To Map And Trace Keypads Lines

Understanding The Led Light Circuits

Explanation On How Audio Circuits Work

Mouthpiece

Earpiece

Buzzer

Ringer

Headset

Vibra Motor

How Lcd Display Circuit Works

Understanding How Rf Circuit Work




ENJOY HARDWARE REPAIRING

source : https://www.tech-support.in.net/forum


Source: UNDERSTAND MOBILE HARDWARE REPAIR - From Noob To Professional