Structure of Nokia BB5

Structure of Nokia BB5

The latest Nokia mobile phones have a dual processor is BB5 type. This group has the sophistication of mobile phones that are not owned by the group earlier Nokia (DCT3, DCT4, DCT4WD2). Nokia BB5 phones like Nokia 6630, 6680, 6680, 6681, N Series.

I. Processor

Second Processor which plays an important role as the brain of the phone are:

- RAP3G (Radio Application Processor 3G), which

functions to manage the device's main work processes. The voltage obtained from the VIO retu 1.8 Volt, 1.4 Volt and Vcore of TAHVO.

- OMAP (Open Multimedia Audio Processor) which controls the user interface such as Camera, MMC, keypad, LCD, etc.. OMAP got a supply voltage of 1.8 Volt retu the VIO. Each processor has its own memory. RAP3G have NOR Flash + SDRAM, while the OMAP with Combo Memory APE

II. Memory

As data storage required by the mobile phone used type of memory as follows

- NAND Flash (Combo Memory APE) that are accessed by the OMAP processor. This memory contains the application data and user data User Interface settings. NAND Flash get a supply voltage of IC Power retu namely VIO VDRAM 1.8 Volt and 1.8 Volt.

- NOR Flash + SDRAM (CMT Memory) is memory that contains data vital primary functions of the phone contains the firmware, calibration certificates and IDs. VIO supply voltage is 1.8 volts of retu.

III. Regulator Power Supply

Component Power Supply, or better known as IC Power on the phone this BB5

also divided into two parts:

- Main Power IC retu is assigned to provide the supply voltage on the CPU, the SIM Card, and Startup Power and other vital tension. Also process the audio signal (Vibrator, Microphone, Earphone and Speaker Phone). Damage to retu interchangeable causes total dead cell phones and other damage.

Another function is to set the LED lighting dariRETU good LCD / Keypad Led. Keypad LED will not light up when in a bright room. ALS (Ambient Light Sensor) is located padacasing front of the phone in the form of light sensitive transistors.

- TAHVO is second in charge of Power IC also provides a voltage to the CPU, the charging voltage battere (charger), flashing voltage, and voltage LED.Tidak like DCT4, the UEM IC power on the security of data containing the IMEI number, then the retu and TAHVO no safety data in it, so replacement is not retu and required charging TAHVO security area like DCT4. IV. RF (Radio Frequency) IC Component

Signal Processor on BB5 phones are also divided into two components, namely:

- HINKU is a component of the signal receiver (Receiver). Incoming signal to be processed by Hinku phone which will then be sent to RAP3G and output on the speaker.

- VINKU is a component of the transmitter signal from the mic to RAP3G to VINKU and amplified by the PA and transmitted to the provider.

IV. Other components

Other components are

- GSM & WCDMA PA in charge of strengthening that comes from VINKU ouputsignal.

- Antenna Switch set the receiver and transmitter signal paths in and out.

- Bluetooth Bluetooth ICs control the work function to transfer data at 2.4 GHz frequency bands.

By knowing and knowing the components and functions of his office, then we can easily detect and determine the origin of damage if there are problems in this latest Nokia mobile phone group.

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