In some mobile phones, these sound signals are received via SMD Coil / SMD Resistance. It receives sound via signals directly from the CPU or from the audio section inbuilt within the CPU. In most modern mobile cell phones, in which there is a separate ear speaker, it is directly related to the CPU. Read: Mobile Cell Phone Microphone / Mic Not Working Problem and Solution 6. Working voltage ( MIC Bios) ( 1.8 to 2.8 V) is supplied from the CPU or the Power Supply Section for functioning of the MIC and MIC Positive and Negative Volt are input through two SMD Capacitors. MIC interface section is directly connected with the CPU in most mobile phones. One MMC detector switch or pin is made in MMC socket at which, if there is no MMC Card then 1.8 V power is continuously received and after the MMC is connected, it becomes zero. This power supply is given to Pin Numbers – 1,2,3,7,8 of MMC Socket. Description of these 8 pins are as follows:Ģ.8 Volt Power is supplied to Pin Number 4 from Power Supply for functioning of the MMC Card and connection the 50 tp 100 Kilo Ohms resistance in this power supply. Memory card section is made inside the CPU. Now mostly Micro SD Card is connected in most mobile cell phones which is connected with micro card section through a 8 pin socket. Read: Mobile Cell Phone SIM Not Working Problem and Solution 4. In modern mobile cell phones which have qwerty keys, a separate control IC is connected with the CPU for extra protection to the keys. Protector IC or Interface IC or Varactor diode is connected in the row or column line for the protection of key section. This means that rows and columns of keys are directly connected with the CPU. The keyboard section of any mobile cell phone is directly connected with the CPU. Let us Understand these All These Sections in Detail and Electronic Components and IC Parts Present in these Sections and Their Function. Now, these Broad Sections can again be Divided in Several Small Sections for Easy of Understanding. Mobile Phone Sections and Components / Parts in Each Section and Their FunctionĪs I mentioned above, there a Mobile Phone or Smartphone PCB can be Broadly Divided into 3 Main Sections – Network Section, Power Section and Audio Section. Can the sections on a mobile phone PCB be repaired or replaced?.How does the audio circuit section work on a mobile phone PCB?.Why is the RF circuit section important on a mobile phone PCB?.What is the function of the power management IC on a mobile phone PCB?.What are the different sections on a mobile phone PCB?.Video: Mobile Phone Sections and Components.Mobile Phone Sections and Components / Parts in Each Section and Their Function.
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