Today's disassembly information Red rice K20, according to the small E home disassembly and combined with the EWSETECH database analysis, Red rice K20 machine cost is approximately 214.66 US dollars, while its main control IC cost is about $ 93.53, about the whole machine Cost 44%. What is internal to? Let the small E take you in the next.
Configuration list
First, you still have to look at the overall configuration information.
SOC: Qualcomm Snapdragon 730 processor 丨 8nm process
Screen: 6.39 inch AMOLED full screen 丨 resolution 2340x1080 丨 pixel density 403ppi
Storage: 4GB RAM + 64ROM 丨 does not support storage card expansion
Front: 20 million pixels
Rear: 48 million main photos + 8 million long coke + 13 million overseas horns
Battery: Rated capacity is 3900 mAh
Features: Lifting-type front camera 丨 post three-piece 丨 seventh generation optical screen down fingerprint
Red rice K20, although it is not equipped with Qualcomm Snapdragon 855 processor like K20 Pro, which is also a smaller E-demolished.
Dismantlement step
The red rice K20 SIM Carter is located on the left side of the phone. The metal side frame is plastic with a plastic material with a Chinese logo to prevent accidental, there is a black waterproof rubber ring at the seam, which has general life waterproof performance.
The double-curved glass rear cover and the body are fixed, and the back cover can be opened after the blower is heated, and the inside of the glass rear cover is bubble. The upper and lower screws on the phone are posted on the surface.
The interior of the phone is three-stage regular layout, and the 22 screws are used to secure internal components, and the mobile phone battery surface has an NFC induction coil.
The motherboard protective cover uses PC + metal reinforcement, and the bottom is equipped with a linear speaker module, the main board and the speaker module use an antenna for integrated LDS technology. The motherboard cover is attached to the speaker surface, and the fingerprint recognizer is connected to the small board, and the rotor vibration motor surface is wrapped with a copper foil.
Red rice K20 battery is fixed with a double-sided viscous plastic film, and provides a quick release of the battery, and the disassembly is simple.
The battery model is BP41, which is produced by Xinwangda, a typical capacity of 4,000 mA, a lithium-polymer battery with a rated capacity of 3900 mA, supports 18W fast charge.
The front and back shield of the motherboard has a heat dissipation copper foil, and the medium frame support plate is corresponding to the main board processor with a liquid-cooled copper plate and coated with gray heat-conductive silicone. The rear camera protective cover is a metal material, and there is a shock absorbing and lens shock absorbing rubber ring in the inside.
The front camera lifting module uses an electromagnetic lifting motor to drive the front camera up and down.
Red rice K20 has two long FPC soft board connecting motherboards, a soft board is fixed to the mid-frame support plate to connect the motherboard with the tail cutting board, a connection motherboard and the display screen.
The front camera disassembly is quite simple, and the connection between the drive motor and the module is not complex. After removing the motor, the camera module is taken out to the top of the phone.
The fingerprint recognizer has a black adhesive bonding on the back of the screen, and the module uses a topic technology GM185 fingerprint identification solution.
K20 front 20 million pixel camera module is produced by 宇 光学, there is a black waterproof ring between the module lift mechanism and the decorative protection cover, and there is LED breathing lamp bead on both sides of the lifting module.
K20 rear camera is divided into two modules, a double-lens module add a single lens module, from left to right, respectively: 8 megapixel long focus lens +48 million pixel main lenses, 13 million pixel super wide angle lenses. 48 million pixel lens uses Sony IMX582 RGBW four-in-one CMOS sensor.
The screen module and the midfraction are fixed, and there is a foam and graphite material between the two, the screen is a 6.39-inch amoled full screen of Samsung, and the screen model is: AMS639RQ08.
Then enter our topic today, let's take a look at the motherboard IC information of the red rice K20.
Motherboard IC information
The main IC of the motherboard (below):
Yellow: NXP-TFA9874B- Audio Amplifier Chip
Red: QUALCOMM-SM7150-Snapdragon 730 64-bit Barn Diendle chip
Green: QUALCOMM-SMB1390-Quick Charge 4.0 fast charge chip
Orange: AKM-AK09918-Compass Chip
Blue: SK HYNIX-H9H053AECMMD-6GB DRAM + 64GB FLASH chip
Cyan: QUALCOMM-WCD9375-Audio Decoding Chip
Deep Green: Skyworks-Sky77925-21-RF front chip
Purple: NXP-SN100T-NFC chip
Light blue: Skyworks-Sky77643-31-RF amplifier module chip
Pink: Ti-TPS65634-3 output amoled display power chip
The main IC on the back of the motherboard (below):
Blue: QUALCOMM-SDR660-radio frequency transceiver chip
Yellow: Invensense-ICM42607 - Acceleration and Gyroscope Chip
Green: TDK-EPC-D5352-RF Antenna Filter Integrated Module Chip
Purple: AKM-AK09970-Magnetic Sensor Chip
Green: QUALCOMM-PM7150-Power Management Chip
Deep Green: QUALCOMM-PM7150A-Power Management Chip
Orange: QUALCOMM-WCN3990-Wireless, Bluetooth, FM chip
The use of logic, memory, pm, and RF chip used on the motherboard are shown in the table:
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MeMS chip usage information on the motherboard is shown in the table:
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Summarize
Red rice K20 plus waterproof rubber circles and dust masks on some component surfaces, with general life waterproof functions. The LDS technology antenna is integrated on the motherboard cover of the PC. The upper part of the box is used to enhance the heat dissipation of the mobile phone. There is a reduction, the whole machine is used in the medium, and the removal is relatively simple.
Source: ewistech
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