How to Identify Parts and Components on the PCB of a Mobile Cell Phone: 1.Antenna Point: The point where antenna is connected is called antenna point. It is normally located at the top of the PCB of a mobile phone. Network Section: The section below antenna point and above power section is called network section. 2.Antenna 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 antenna switch is merged with PFO. Antenna Switch of Mobile Phone Antenna Switch of Mobile Phone 3.PFO: Power Frequency Oscillator. It is present beside the antenna switch. PFO of a Mobile Phone PFO of a Mobile Phone 4.Network IC: It is below or beside the antenna switch and PFO. In some mobile phones, the Network IC is merged with the CPU. E.g.: Nokia 1200, 1650, 1208, 1209 etc. Network IC of a Mobile Phone Network IC of a Mobile Phone Power Section: This section is below the Network Section. 5.Power IC: In the Power Section, the IC around which there are several brown-colored capacitors is called Power IC. In some mobile phones there are 2 Power ICs. Power IC of a Mobile Phone Power IC of a Mobile Phone 6.CPU: Central Processing Unit. In the power section, the largest IC is the CPU. In some sets there are 2 CPU. CPU of a Mobile Phone CPU of a Mobile Phone 7.Flash IC: This IC is found beside the CPU. Flash IC of a Mobile Phone Flash IC of a Mobile Phone 8.Logic IC: The IC with 20 legs is the Logic IC. Logic IC of a Mobile Phone Logic IC of a Mobile Phone 9.Charging IC: In the Power Section, the IC beside R22 is the Charging IC. Charging IC of a Mobile Phone Charging IC of a Mobile Phone 10.Audio IC: The IC parallel to Power IC is the Audio IC. Audio IC of a Mobile Phone Audio IC of a Mobile Phone NOTES: 1.UEM (Universal Energy Manager) = Logic IC + Charging IC + Audio IC + Power IC 2.PFO (Power Frequency Oscillator) = Antenna Switch + PFO 3.Flash IC= RAM + Flash IC Mobile Phone PCB Layout Diagram Mobile Phone PCB Layout Diagram
Posted on: Sat, 15 Nov 2014 21:04:10 +0000
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