Big part
of mobile component and there work,When we want to learn to make mobile
phones, it is important to know about its component or part. To explain the Big level part of mobile Component, any PCB is divided into two parts.
1 Network
Section 2 Power Section
Big part
of the network section
1 Antenna
Switch: It is found in the network section of a mobile phone and it is
made of metal and non-metal. In GSM sets it is found in white and found in
golden metal in CDMA sets.
Works: The
function of Antina Switch is to transmit or receive a network
signal.
Fault: When
the antenna switch is damaged, the network does not come in mobile. Or always
keeps doing searching.
2 P.F.O: It is
found in the network section near the antenna switch. It is also called P.A
(Power Amplifier) and Band Pass Filter. It is made up of a mark of a cross,
often a rectangle.
Work: It
filter or amplifiers network frequency. And selects the home
network.
Fault: If
P.F.O is defective, then there is no network in mobile phone. And if it gets
shorter, then the mobile phone is dead.
3. RF IC: It
is found near the PFO in the network section of a mobile phone. It is also
called an RF signal processor.
Work: It works
as a transmitter and receiver of audio and radio waves according to instructions
from the CPU.
Fault: If the
RF IC is defective then the mobile phone will have network problems. Rarely
mobile phones can be dead.
4. 26 MZ crystal
Oscillator: It is found in the network section of mobile phone near
PFO. It is made of metal.
Work: It
produces 26Mzh Frequency during the outgoing call or to run the CPU
Fault: If it
crystal is Defective then there will be no outgoing calls and no network in the
mobile phone. Or the phone is dead too.
5. VCO: It is
found in the network section of the mobile phone with the network IC.
Work: It sends
time, date and voltage to RF IC / Hager and CPU. It also creates the frequency
after taking the command from the CPU.
Fault: If it
is defective then the mobile phone will not have any network and it will display
"call end" or "call failed".
6. RX Filter:
It is found in the Network section of a mobile phone.
Work: It
filters the frequency during the incoming call.
Fault: If it
is Defective then there will be network problem during incoming call.
7. TX Filter:
It is found in a mobile phone network section.
Work: It
filters the frequency during the Outgoing Call.
Fault: If it
is defective then there will be network problem during Outgoing Call.
8. ROM: It is
found in the power section of a mobile phone.
Work: It loads
the current Oprating System in a mobile phone.
Fault: If the
ROM IC gets damaged then the mobile phone will have a software problem and the
set will be dead.
9. Ram: It is
found in the power section of a mobile phone.
Work: It sends
and receives commands to the operating program in the mobile
phone.
Fault: If RAM
is defective, then the mobile phone will have a software problem and it will
often get hanged and can set Ded.
10. Flash IC:
It is found in the power section of a mobile phone. It is also called EEPROM IC,
Memory IC, RAM IC and ROM IC.
Work: Software
and IMEI number is installed in mobile phone flash IC.
Fault: If the
flash IC is faulty, then the mobile phone will not work properly and it can also
be dead.
11. Power IC:
It is found in the power section of a mobile phone. There are several small
components mainly SMD capacitor around this IC. RTC Power is near IC.
Work: It takes
power from the battery and supplies it in all other parts of the mobile
phone.
Fault: If the
power IC is faulty, the set will be dead.
12.Cell Phone Charging
IC: It is found in power section near R22.
Work: It takes
the current from the charger and charges the battery.
Fault: If the
charging IC is defective, will not give 4.2v output to charge the mobile
battery.
13. RTC (simple silicon
and): This (real time clock) is found in Power section near Power IC.
It is made of metal or non-metal. It is of long shape.
Work: It helps
in running date and time in mobile phones.
Fault: If RTC
is faulty then there will be no date or time in mobile phone and set dead can
also be done.
14. CPU: It is Central Procession Unit of the
Phone and is found in the Power Section. It is also called MAD IC, RAP IC and
UPP. It is the largest IC on the PCB of a Mobile Phone and it looks different
from all other IC
Work: It
controls all sections of a mobile phon
e.
Faults: If CPU
is faulty then the mobile phone will get dead
15. Logic IC / UI IC:It is found in any section
of a mobile phone. It has 20 pins or legs. It is also called UI IC and Interface
IC.
Work :
It controls Ringer, Vibrator and LED of a mobile phone.
Faults:
If Logic IC / UI IC is faulty then Ringer, Vibrator and LED of mobile phone will
nor work properly.
16. Audio IC:It is found in Power Section of a
mobile phone. It is also called Cobba IC and Melody IC.
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.
