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Mobile Repairing Training

This is a discussion on Mobile Repairing Training within the Mobile Hardware forums, part of the Mobile Palace category; Introduction To Mobile Phone Parts. Dear friends here we will discuss about what kind of functions a typical mobile has ...

  1. #1
    iTT Student
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    Mar 2011
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    pakistan
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    Thumbs up Mobile Repairing Training

    Introduction To Mobile Phone Parts.
    Dear
    friends here we will discuss about what kind of functions a typical
    mobile has so let us start our new lesson. while starting i would
    like to say all of you that you please keep in touch with me by our
    contact us page and please don't feel any hesitation to ask me any
    question if you have about these lessons. these lessons will make you
    learn good repairing skills so keep reading these lectures.
    First of all we will discuss how many main functions a mobile often has irrespectively of mobile brands.
    There are three major sections inside a mobile

    Power Section
    Radio Section
    Computer Section
    Power Section:
    A
    power section deals with power related tasks such as power distribution
    or charging the battery so this section can be divided into two sub
    sections like.
    Power Distribution
    A power distribution section
    is built around an "power IC" it takes 3.6V power from battery and
    regulates its power and then distributes to the other components used
    in mobile circuit. in some mobile s tech "RF Power
    amplifier" uses more Power than provided bye mobile 's battery
    .i.e. 4.7 V or 5.6 V in some s. the power Ic with a power boaster
    coil is used to increase voltages. so we can say that power IC is used
    to provide power to other components how much they needed. either less
    than battery voltage or more than it.
    Charging Section
    A charging
    section works for battery charging purposes.it is often consists a
    fuse, a coil, a protecting diode, a filter capacitor and charging IC
    and some other discreet. the charging section helps battery to be
    charged when it needs and when battery is charged, charging IC reads
    its state of charge and feels it full charged and then disconnects
    charging from it.
    Radio Section:
    A radio section has basically a set of four main functions.wich are.
    Band Switching
    RF Power Amplification
    Transmitter
    Receiver
    Band Switching:
    In the modern mobile communication techniques. the frequency of mobile communication is divided into three bands
    GSM (operates on 900 MHz)
    DCS (operates on 1800 MHz)
    PCS (operates on 1900 MHz)
    the
    third band is used only in USA whereas the first two bands are used in
    the rest of the world. band switching is done bye a "ceramic antenna
    switch" it reads from the radiation dispersed in the air and then
    switches to the appropriate band.
    in the very first phase of mobile
    s there were single band handsets which operated on single
    frequency band but now a days all the handsets are dual band or tri
    band in operation.
    RF Power Amplifier
    RF power amplifier is
    often called as ".PA" or"Transmitter" its functions is to amplify or
    boast the power which is being transmitted to air, so may it would be
    able to communicate with long distances. a typical .PA can amplify rf
    power up to 0.6W or 600mW. This amount of rf power is sufficient to
    communicate nearly 20 to 25 kilometers in open area, but all the PA's
    are controlled by there rf signal processor, so if we are near our cell
    base tower the PA of our will transmit low power but if we are
    far away it will produce its maximum power.
    Transmitting
    A mobile
    's rf section is basically built around an rf IC which is often
    called rf signal processor whereas in nokia it is called hagar IC in
    some hand sets and in some hand sets it is called Mjoelner.
    irrespectively of the brands and verity of names we call it rf signal
    processor. this IC works as transmitter and receiver as well. working
    as transmitter it takes instructions from 's computer and also
    takes audio data from audio section and creates radio waves then mixes
    audio data to its radio waves according to the instructions given by
    computer section. this mixer of audio and radio is sent to PA to
    amplify its strength
    Reciever
    A reciver section for rf waves is
    built in rf IC, as it is said that this IC works for dual purposes
    first transmitting and section recieving. in the recieving section of
    mobile s a radio signal is gather from ceramic antenna switch and
    then it is filtered and sent to rf IC to further process. in rf IC
    signal is detected and then rectified for audio and data which is sent
    to audio IC or computer section.
    Computer Section:
    A computer section in mobile consists of two main functions
    CPU(central processing unit)
    Memory (RAM, FLASH, COMBO CHIP)
    CPU:
    A
    CPU is used in mobile s as a central processing arithematic or
    controler. the cpu controls various functions in mobile s like
    signal, display, sound converting(DSP), charging, power on, rf channel
    controler, rf tx power conroller, LEDs, vibrator, data processing, data
    storing etc. so we can say that if a cpu is damaged in any mobile
    it cannot be repaired unless the CPU is not replaced but this type of
    fault is not even seen to me ever either memory chips can be damaged.
    in brand Nokia CPU is named with two different words (MAD or UPP)
    Memory:
    there are two main types of memories used in mobile s
    RAM (Random Access Memory)
    The
    RAM is used in mobile s to store user data in mobile s. So
    these a days we can store pictures, messages, ringtones, applications,
    themes and other these type of things in mobile s so CPU stores
    these types of data in the RAM of our mobile s.
    Flash (eeprom, ROM etc)
    The
    flash chip is used in mobile s to hold mobile 's operating
    system in it. so if the flash chip is damaged in mobile s the
    cannot power on properly because all the instructions to start a
    mobile s and its various tasks like call making , display etc are
    stored in the flash chip of mobile s.
    Combo Chip
    In smoe
    mobile s there is a combined type of memory used which is called
    combo memory chips these types of memories work for both like RAM and
    Flash.The clear example of this type of memory is used in Nokia 1100.
    Note: Multy Media Cards are not a part of mobile s becaues they are used externally.

    Mobile Phone Function


    Dear
    friends here we will discuss about what kind of functions a typical
    mobile has so let us start our new lesson. while starting i would
    like to say all of you that you please keep in touch with me by our
    contact us page and please don't feel any hesitation to ask me any
    question if you have about these lessons. these lessons will make you
    learn good repairing skills so keep reading these lectures.





    First of all we will discuss how many main functions a mobile often has irrespectively of mobile brands.
    There are three major sections inside a mobile


    Power Section
    Radio Section
    Computer Section
    Power Section:
    A
    power section deals with power related tasks such as power distribution
    or charging the battery so this section can be divided into two sub
    sections like.
    Power Distribution
    A power distribution section
    is built around an "power IC" it takes 3.6V power from battery and
    regulates its power and then distributes to the other components used
    in mobile circuit. in some mobile s tech "RF Power
    amplifier" uses more Power than provided bye mobile 's battery
    .i.e. 4.7 V or 5.6 V in some s. the power Ic with a power boaster
    coil is used to increase voltages. so we can say that power IC is used
    to provide power to other components how much they needed. either less
    than battery voltage or more than it.
    Charging Section
    A charging
    section works for battery charging purposes.it is often consists a
    fuse, a coil, a protecting diode, a filter capacitor and charging IC
    and some other discreet. the charging section helps battery to be
    charged when it needs and when battery is charged, charging IC reads
    its state of charge and feels it full charged and then disconnects
    charging from it.

    Radio Section:
    A radio section has basically a set of four main functions.wich are.
    Band Switching
    RF Power Amplification
    Transmitter
    Receiver
    Band Switching:
    In the modern mobile communication techniques. the frequency of mobile communication is divided into three bands
    GSM (operates on 900 MHz)
    DCS (operates on 1800 MHz)
    PCS (operates on 1900 MHz)
    the
    third band is used only in USA whereas the first two bands are used in
    the rest of the world. band switching is done bye a "ceramic antenna
    switch" it reads from the radiation dispersed in the air and then
    switches to the appropriate band.
    in the very first phase of mobile
    s there were single band handsets which operated on single
    frequency band but now a days all the handsets are dual band or tri
    band in operation.
    RF Power Amplifier
    RF power amplifier is
    often called as ".PA" or"Transmitter" its functions is to amplify or
    boast the power which is being transmitted to air, so may it would be
    able to communicate with long distances. a typical .PA can amplify rf
    power up to 0.6W or 600mW. This amount of rf power is sufficient to
    communicate nearly 20 to 25 kilometers in open area, but all the PA's
    are controlled by there rf signal processor, so if we are near our cell
    base tower the PA of our will transmit low power but if we are
    far away it will produce its maximum power.
    Transmitting
    A mobile
    's rf section is basically built around an rf IC which is often
    called rf signal processor whereas in nokia it is called hagar IC in
    some hand sets and in some hand sets it is called Mjoelner.
    irrespectively of the brands and verity of names we call it rf signal
    processor. this IC works as transmitter and receiver as well. working
    as transmitter it takes instructions from 's computer and also
    takes audio data from audio section and creates radio waves then mixes
    audio data to its radio waves according to the instructions given by
    computer section. this mixer of audio and radio is sent to PA to
    amplify its strength
    Reciever
    A reciver section for rf waves is
    built in rf IC, as it is said that this IC works for dual purposes
    first transmitting and section recieving. in the recieving section of
    mobile s a radio signal is gather from ceramic antenna switch and
    then it is filtered and sent to rf IC to further process. in rf IC
    signal is detected and then rectified for audio and data which is sent
    to audio IC or computer section.
    Computer Section:
    A computer section in mobile consists of two main functions
    CPU(central processing unit)
    Memory (RAM, FLASH, COMBO CHIP)
    CPU:
    A
    CPU is used in mobile s as a central processing arithematic or
    controler. the cpu controls various functions in mobile s like
    signal, display, sound converting(DSP), charging, power on, rf channel
    controler, rf tx power conroller, LEDs, vibrator, data processing, data
    storing etc. so we can say that if a cpu is damaged in any mobile
    it cannot be repaired unless the CPU is not replaced but this type of
    fault is not even seen to me ever either memory chips can be damaged.
    in brand Nokia CPU is named with two different words (MAD or UPP)
    Memory:
    there are two main types of memories used in mobile s
    RAM (Random Access Memory)
    The
    RAM is used in mobile s to store user data in mobile s. So
    these a days we can store pictures, messages, ringtones, applications,
    themes and other these type of things in mobile s so CPU stores
    these types of data in the RAM of our mobile s.
    Flash (eeprom, ROM etc)
    The
    flash chip is used in mobile s to hold mobile 's operating
    system in it. so if the flash chip is damaged in mobile s the
    cannot power on properly because all the instructions to start a
    mobile s and its various tasks like call making , display etc are
    stored in the flash chip of mobile s.
    Combo Chip
    In smoe
    mobile s there is a combined type of memory used which is called
    combo memory chips these types of memories work for both like RAM and
    Flash.The clear example of this type of memory is used in Nokia 1100.
    Note: Multy Media Cards are not a part of mobile s because they are used externally.


    Mother Board System

    This
    Lesson is intended to make you aware of the Fundamentals of a mobile
    's mother board and I want to teach you about what a typical
    mother board.

    A typical mother board is constructed using two main things
    Fiber Plate
    Copper Plate
    These two plates are joined in three forms.
    Single layer board
    Double layer board
    Three or tripple layer board
    A
    single layer board is constructed yusing one copper plate and the other
    fiber plate. Its one side is copper faced and other is fiber faced.
    while
    a Double layer board is made with two copper sheets ad fiber sheet.Its
    one side is copper faced and the other is also copper faced and the
    fiber is stcked between two copper sheets.this kind of board holds
    electronic components on both of its side because both copper sided
    prints anre inter connected with one another on proper places
    A three layer board is made with three copper sheets and two fiber sheet.as it is shown below.
    Basics about Mother Boards
    Different
    mother boards have different views but many things are common in
    different brand mother boards.first common thing is ,every mother board
    has radio Section on top of the mother board

    BY SUPER MOBILE AND REPAIRING LAB. CONTECT NO 03334370625
    EMAIL: super_mobile577***********
    adsen0333***********
    IrfanAhmed likes this.

  2. #2
    iTT Student zuni_sheikh's Avatar
    Join Date
    Oct 2009
    Location
    hyderabad
    Posts
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    Re: Mobile Repairing Training

    ap nay to aik he lecture mein sara bata dia..........................

  3. #3
    iTT Student
    Join Date
    May 2012
    Location
    bahrain
    Posts
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    Re: Mobile Repairing Training

    achi shairing ha mgr qwaneen k mutabiq URDU ya ROMAN URDU ma likhna chahiye tha

  4. #4
    iTT Student
    Join Date
    Jul 2014
    Location
    Pakistan
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    Posts
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    Re: Mobile Repairing Training

    thankU

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