The Components You Need to Learn Before Phone Fix Mobile phones are more and more essential in our daily lives, it's very common to keep a cell phone even for old men now. Therefore, cell phone fix industry becomes very popular. If you are a beginner in the field, before learning how to fix mobile phones, it's also very important for you to learn how to identify different components on the PCB of a mobile phone. Of course, it's not so difficult to identify these cell phone components. For different mobile phone brand like Samsung and other China mobile phone motherboard, there are 2 parts included: power section and network section. It's important to remember these two parts when you identify electronic components and integrated circuits on the main board of mobile phones.
VIP FIX will offer the details for mobile phone components as followiong: 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. 2. Network Section: The section below antenna point and above power part is called network section. 3. Power Section: This section is below the Network Section.
4. 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.
5. PFO: Power Frequency Oscillator. It is present beside the antenna switch. PFO (Power Frequency Oscillator) = Antenna Switch + PFO 6. Network IC: It is below or beside the antenna switch and PFO. In some mobile phones, the Network IC is merged with the CPU.
7. Power IC: In the Power Section, the IC around which
there are several brown-colored capacitors is called Phone Power IC. In some mobile phones there are 2 Power ICs. 8. CPU: Central Processing Unit. In the power section, the largest IC is the mobile phone CPU. In some sets there are 2 CPU. 9. Flash IC: This IC is found beside the CPU. Flash IC= RAM + Flash IC 10. Logic IC: The IC with 20 legs is the Logic IC. 11. Charging IC: In the Power Section, the IC beside R22 is the Charging IC. 12. Audio IC: The IC parallel to Power IC is the Audio IC. UEM (Universal Energy Manager) = Logic IC + Charging IC + Audio IC + Power IC
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