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Mobile Phone PCB Diagram with Parts
Big Parts of a Mobile Cell Phone and Their Function:
- Antenna Switch : It is found in the Network Section of a mobile phone
Cell Phone Antenna Switch
and is made up of metal and non-metal. In GSM sets it is found in white color and in CDMA sets it is found in golden metal.
Work : It searches network and passes forward after tuning. Faults : If the Antenna Switch is faulty then there will be no network in the mobile phone.
- P.F.O : It is found near the Antenna Switch in the Network Section of the
Cell Phone PFO
PCB of Mobile Phone. It is also called P.A (Power Amplifier) and Band Pass Filter. 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.
- RF IC / Hagar / Network IC : This electronic component found near
Cell Phone Network IC / RF IC
the PFO in the Network Section of a Mobile Phone. 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. Faults : If the RF IC is faulty then there will be problem with network in the mobile phone. Sometimes the mobile phone can even get dead.
- 26 MHz Crystal Oscillator : It is found near the PFO in the Network
Mobile Phone 26 MHz Crystal Oscillator
Section of a Mobile Phone. 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.
- VCO : It is found near the Network IC in the Network Section of a Mobile
Mobile Phone VCO
Mobile Phone RAM
Work : It sends and receives commands of the operating program in a mobile phone. Faults : 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.
- Flash IC : It is found in the Power Section of a Mobile Phone. It is also
Cell Phone Flash IC
called EEPROM IC, Memory IC, RAM IC and ROM IC.
Work : Software of the mobile phone is installed in the Flash IC. Faults : If Flash IC is faulty then the mobile phone will not work properly and it can even get dead.
- Power IC : It is found in the Power Section of a Mobile Phone. There are
Cell Phone Power IC
many small components mainly capacitor around this IC. RTC is near the Power IC.
Work : It takes power from the battery and supplies to all other parts of a mobile phone. Faults : If Power IC is faulty then the set will get dead.
- Charging IC : It is found in the Power Section near R22.
Cell Phone Charging IC
Work : It takes current from the charger and charges the battery. Faults : If Charging IC is faulty then the set will not get charged. If the Charging IC is short then the set will get dead.
- RTC (Simple Silicon Crystal) : It is Real Time Clock and is found in
Mobile Phone RTC (Real Time Clock)
the Power Section near Power IC. It is made up of either metal or non- metal. It is of long shape.
Work : It helps to run the date and time in a mobile phone. Faults : If RTC is faulty then there will be no date or time in the mobile phone and the set can even get dead.
- CPU : It is found in the Power Section. It is also called MAD IC, RAP IC
Cell Phone CPU
and UPP. It is the largest IC on the PCB of a Mobile Phone and it looks different from all other ICs.
Work : It controls all sections of a mobile phone. Faults : If CPU is faulty then the mobile phone will get dead.
- Logic IC / UI IC : It is found in any section of a mobile phone. It has 20
