Cell phone repair notes pdf




This cell phone repair training book will help you to solve small problems by your own. Mobile Repairing is a vast field and this is evolving day by day. The journey of mobile industry starts from traditional phones and now it reaches to Android and iPhones. If you are on this page then there are multiple reasons to download this Mobile Phone Repairing PDF , some of them are listed below —.

We have left no stone unturned to make it perfect for you. This Mobile repairing book consists steps of troubleshooting mobile repairing problems. Whether you are a novice or experienced mobile service engineer this PDF guide will help you lot. If you are the one who believes in learning by doing, then this will the best tool for you! Want to Learn Mobile Repairing? Used PCB. Used to PCB. Used to Cut and Remove Lamination.

For Cleaning. D Rework Track and Electronic Station: To Remove and Components. To Voltage of Battery. Electronic Components While Soldering. Used While Track and Legs of Soldering. Used to Sponge: To Clean Tip of Solder. Soldering Iron www. PCB Track.

Fascia 2. Identification of Card Level Parts. Back Facia Facia Back Facia www. LED www. Charging Connector Data Cable Connector www. Battery Connector www. Battery SIM Card SIM Card Connector www. Memory Card Memory Card Connector www. Camera Connector www. Camera Keypad Button Keypad Connector Display Display Connector www.

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Antenna PCB www. PDA www. Network RX Filter 1. It is made from metal and non-metal. Identification of PCB 1. Antenna Point: The point where anteena is connected is called anteena point. Anteena Switch: It is found in the network section. It has 16 points or legs. Network Section: The section below anteena point and above power section is called network section. Identification of PCB 4. In some mobile phones. Nokia Network IC: It is below or beside the anteena switch and PFO. It is present beside the antenna switch. Identification of PCB 8.

Power Section: This section is below the Network Section. Flash IC: In the power section. Power IC: In the Power Section. In some sets there are 2 CPU. In some mobile phones there are 2 Power IC. Identification of PCB Charging IC: Audio IC: Logic IC: It searches network and passes forward after tuning. Definition of Big Parts 1. Antenna Switch: It is found in the Network Section of a Mobile Phone and is made up of metal and non-metal.

If the Anteena Switch is faulty then there will be no network in the mobile phone. Definition of Big Parts 2. It filters and amplifies network frequency and selects the home network.

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If it gets short then the mobile phone will get dead. It is also called P. If the PFO is faulty then there will be no network in the mobile phone. Sometimes mobile phone can even get dead. It is also called RF signal processor. Definition of Big Parts 3. It works as transmitter and receiver of audio and radio waves according to the instruction from the CPU. If the RF IC is faulty then there will be problem with network in the mobile phone. It creates frequency during outgoing calls. If this crystal is faulty then there will be no outgoing call and no network in the mobile phone.

It is also called Network Crystal. It is made up of metal. Definition of Big Parts 4. It sends time. Definition of Big Parts 5.


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It also creates frequency after taking command from the CPU. TX Filter: It is found in the Network Section of a Mobile Phone. Definition of Big Parts 6. It filters frequency during outgoing calls. If it is faulty then there will network problem during incoming calls. It filters frequency during incoming calls. If it is faulty then there will network problem during outgoing calls. RX Filter: It is found in the Power Section of a Mobile Phone.

It loads current operating program in a Mobile Phone.

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If ROM is faulty then there will software problem in the mobile phone and the set will get dead. Definition of Big Parts 8. If RAM is faulty then there will be software problem in the mobile phone and it will get frequently get hanged and the set can even get dead. It sends and receives commands of the operating program in a mobile phone. Definition of Big Parts 9. Memory IC. Definition of Big Parts Software of the mobile phone is installed in the Flash IC.

If Flash IC is faulty then the mobile phone will not work properly and it can even get dead. There are many small components mainly capacitor around this IC.

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It takes power from the battery and supplies to all other parts of a mobile phone. If Power IC is faulty then the set will get dead. It is found in the Power Section near R If Charging IC is faulty then the set will not get charged. If the Charging IC is short then the set will get dead. It is made up of either metal or non-metal.

It is of long shape.

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If RTC is faulty then there will be no date or time in the mobile phone and the set can even get dead. It is found in the Power Section. It is found in any section of a mobile phone. It has 20 pins or legs. It is found in Power Section of a mobile phone. It controls Speaker and Microphone of a mobile phone. If Audio IC is faulty then Speaker and Microphone of a mobile phone will not work and the set can even get dead. It is made up of either metal or non-metal and is of long shape. If this crystal is faulty then the clock of the mobile phone will not work and the set can get dead. It runs the clock of a mobile phone.

Identification of Small Parts 1. This crystal is found in the Power Section of a mobile phone. There are 2 types of crystal in a mobile phone: This crystal is found in the Network Section of a Mobile Phone. If the Network Crystal is faulty then there will be no network in the mobile phone. It filters network. If the coupler is faulty then there will be no network in the mobile phone. This electronic component is found in the Network Section of a mobile phone.

It is of either black or white colour and has 6 pins bent inside. Identification of Small Parts Coupler 2. It is used for Infrared. Identification of Small Parts 3. It is found in white or light yellow colour and emits light. It is found in charging section. It acts as voltage regulator. Diodes are of 4 types: Zenor diode has fixed capacity like 4V.


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It filters and minimize current and passes forward. It captures Infrared Rays. It does not pass current in reverse direction. It passes current in one direction. It does the work of switching. It is of black colour and it has 3 legs. It filters current and regulates voltage. It is of black colour and has 5 or 6 legs. This electronic component is found in any section of a mobile phone. Identification of Small Parts 4.

It is the smallest electronic components on the PCB of a mobile phone.

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Identification of Small Parts 6. There are 2 types of resistance on a the PCB of a mobile phone: It can be found in any section of a mobile phone. It is made from 2 or more Chip Resistance. In some sets it is also found in blue and green colour. It is of black colour. It decreases current and passes forward.

Identification of Small Parts 7. It filters DC current. It can be of light black. It filters and stores current. It is found in 2 colours — i Orange with brown strip: It is made from 2 or more Non-Electrolytic Capacitors. It filters and decreases Current and Voltage. Boost Coil: It increases current. It is found in many shapes and sizes. It has binding of copper coil inside. If this coil gets damaged then it has to be changed. It is found in black colour and look like button.

Identification of Small Parts 8. Coils are found in 2 colours: Resistance 3. Capacitor 3.

Microphone 2. Speaker 1. Coil 2. Diode www. Leg-Type IC: IC is an electronic component that is made up of many other small electronic components like resistance.

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Cell phone repair notes pdf

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