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Work: It controls all sections of a mobile phone.
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Faults: If CPU is faulty then the mobile phone will get dead. It has 20 pins or legs. Work: It controls Speaker and Microphone of a mobile phone. Faults: 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 metal. Work: It filters network.
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It is made up of either metal or non-metal and is of long shape. Work: It runs the clock of a mobile phone. Coupler: 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. Faults: If the coupler is faulty then there will be no network in the mobile phone.
It passes current in one direction. It does not pass current in reverse direction. SIM Card Connector www. Memory Card Memory Card Connector www.
Camera Camera Connector www. Keypad Button Keypad Connector Display Display Connector www.
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Antenna PCB www. Antenna Point: The point where anteena is connected is called anteena point. Network Section: The section below anteena point and above power section is called network section. Anteena Switch: It is found in the network section. It is made from metal and non-metal.
It has 16 points or legs. In some mobile phones, the anteena switch is merged with PFO. PFO: It is present beside the antenna switch. Power Section: This section is below the Network Section.
In some mobile phones there are 2 Power IC. In some sets there are 2 CPU. Work: It searches network and passes forward after tuning. Faults: If the Anteena Switch is faulty then there will be no network in the mobile phone.
It is also called P. Work: It filters and amplifies network frequency and selects the home network.
Faults: If the PFO is faulty then there will be no network in the mobile phone. If it gets short then the mobile phone will get dead. It is also called RF signal processor.
Work: It works as transmitter and receiver of audio and radio waves according to the instruction from the CPU. Sometimes mobile phone can even get dead. It is also called Network Crystal.
It is made up of metal. Work: It creates frequency during outgoing calls.
Faults: If this crystal is faulty then there will be no outgoing call and no network in the mobile phone. It also creates frequency after taking command from the CPU. Work: It filters frequency during incoming calls.
Faults: If it is faulty then there will network problem during incoming calls. Work: It filters frequency during outgoing calls. Faults: If it is faulty then there will network problem during outgoing calls.Power from Battery.
Diagnose To identify the nature of a problem by examining the symptoms. Resold the display connector 3. Digital Core Technology.
Faults: If it is faulty then there will network problem during outgoing calls.
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