Saturday, January 07, 2017

Pixel C – Specification - Disassembling procedure – How to remove the display – How to remove the mother board – How to remove the battery – Tablets Repair and service

Category: Tablets Repair and Service 

Contents of this article 

  • How to remove the display
  • How to remove the mother board 
  • How to remove other components 

Pixel C Tablet

SPECIFICATION
1. 10.2" LTPS LCD with a resolution of 2560 x 1800 (308 ppi)
2. Nvidia Tegra X1 64-bit quad-core processor paired with a 256-core Maxwell GPU
3. 3 GB LPDDR4 memory
4. 32 or 64 GB storage options
5. USB Type-C
6. 8 MP rear camera and 2 MP front camera
7. Android 6.0 Marshmallow
The Pixel C features a slick unibody aluminum chassis, with stereo speakers, USB C, and the usual power and volume rockers.
Along the top are holes for the "quad noise-cancelling microphones.
DISASSEMBLING PROCEDURE
After much heating and some heavy duty suction,  liftoff the display with a heavy suction cup .
A thin cable for the front-facing camera keeps  from immediate opening success.
With the camera cable dispatched,  able to open the Pixel C, with the wide display data ribbon cable still attached.
Unlike most other tablets it’s seen, the Pixel C's front-facing camera assembly lives on the display, not within the device's unibody chassis.
That makes for an annoying extra cable to disconnect when opening the device.
The front-facing camera assembly contains a 2 MP selfie cam, ambient light sensor, and what looks like a camera indicator LED.
A small daughterboard connects the display data cable and is host to the Synaptics touchscreen controller.
Display dispatched, get a better look at the goods.
In the interest of safety, decide to disconnect the battery first.
The connector is buried under two ribbon cables and a piece of tape.
And an exploratory battery cells are very solidly adhered to the case.
There are a total of 17 magnets spread out through the whole case to allow for connecting it to the keyboard.
Fancy stereo speakers.
The speakers are home to adhered-on antennas, so replacing the speaker will probably mean a bit of extra work in the form of peeling and re-sticking.
The speakers' backs are covered in spring contacts that all connect to the back of the case - perhaps for grounding or for conducting WiFi signal to the antennas.
A couple standard Phillips screws secure the USB-C port bracket - but after that, the removal is painless and very modular.
Ports are separate parts. This port will likely get a lot of abuse throughout its life, and a modular component means it can be replaced with relative ease, at low cost (assuming
can get the device open without breaking the display.
More modular components ahead.
The rear-facing camera comes out of its hutch after taking off the metal bracket keeping it in place.
8 MP, can take pretty decent photos of your cats without grabbing your phone.
The power button and volume rocker are simply fixed with two screws apiece. Short cables and simple button covers will make replacements a breeze.
After removing modular parts, you will encounter a rough patch to motherboard.
And a black one.
No screws to be found, opt for some heat action.
Finally pry out the heart of the tablet, wresting it from two adhesive pads, some (nonstick) foam padding and a couple strips of conductive foam.
Mother board contains 
1.Nvidia Tegra X1 64-bit quad-core processor
2.Samsung KLMBG4GEND 32 GB eMMC flash storage
3.Samsung K4F2E304HMMGCH 6 Gb (1.5 GB) LPDDR4 RAM (x2 for 3 GB total)
4.Broadcom BCM43540LKUBG 5G Wi-Fi 802.11ac controller
5.Nuvoton NAU88L25 audio codec
6.STMicroelectronics STM32F3x8 32 bit ARM Cortex-M4 microcontroller
7.Infineon SLB 9645 trusted platform module
This neat little coil feeds the Pixel C's parasitic keyboard, when it's connected in the proper screen-covering position.
Having no ports of its own, the keyboard needs inductive charging from the tablet to function.
Under the coil, find a control board -probably responsible for turning boring old DC power from the battery into exciting, varying-magnetic-field-generating AC to power the coil.
Also get to peel out this headphone jack port with the longest tail ever.
It actually does double duty as an interconnect cable for the inductive coil and the right speaker.
This portion of the case seems to be geologically interesting; under the headphone jack crust, find a reflective backing covering an LED board.
Those LEDs point up at the display, not toward the indicator bar in the case.
The shiny foil layer actually traps the light from the board and bounces it back down to a light guide that shines out through the case.
The final stratum is an array of four noise-canceling microphones.
Finally ready to tackle that hefty battery.
At 34.2 Wh, the Pixel C handily beats the 27.9 Wh 9.7" iPad Pro, but comes in behind the Surface Pro 4's 38.2 Wh powerhouse.
After some serious heating, start scraping along with a plastic card.
Even at the shallowest of angles, start to curl that battery like some pencil shavings. This is some pretty tough adhesive.