Wednesday, November 02, 2016

BlackBerry PlayBook – Disassembling procedure – Tablets repair and service

Category: Tablets Repair and Service 

Contents of this article 

  • How to remove the case
  • How to remove the mother board 
  • How to remove the Display 

BlackBerry PlayBook 

TECHNICAL SPECIFICATION 
7" Capacitive Touchscreen with Multitouch Support 1 GHz TI OMAP 4430 Dual Core Processor 1 GB RAM.
Dual HD Cameras (3MP and 5MP in the front and back, respectively),The PlayBook lacks support for mobile broadband.
DISASSEMBLING PROCEDURE 
Insert a plastic opening tool into the PlayBook's rim, and pray to the gods of electronics that the front panel doesn't shatter.
Upon releasing the clips surrounding the perimeter, the rear case can be removed.
Unlike other popular tablets, the PlayBook's guts are not housed within the back cover but are instead attached to the display assembly.
The PlayBook has a 20 watt-hour battery, which is a bit smaller than the iPad 2's 25 watt-hour and the Xoom's 24 watt-hour battery. Even though the battery in the
PlayBook has a smaller capacity, the battery life is rumored to be comparable to the iPad 2 and Xoom, although official numbers have not yet been released.
Now we can remove a pair of screws from the battery connector with a Phillips #00 screwdriver.
Next we pry off the battery connector to bring us one step closer to the goods.
Continue by prying off all the other connectors from the motherboard.
Next we remove a couple Phillips screws from the motherboard. In an array of light showering us from the BlackBerry heavens (not pictured), we remove the motherboard from the PlayBook.
Front view of the motherboard.
Elpida B8064B2PB-8D-F 1GB DRAM & the TI OMAP4430 1GHz dual-core processor.
SanDisk SDIN5C2-16G 16 GB NAND Flash.
Texas Instruments TWL6030 Power Management.
STMicroelectronics XTV0987 5 MP mobile imaging processor.
Wolfson WM8994E audio codec Texas Instruments WL1283 GPS/WLAN/Bluetooth/FM
TriQuint Semiconductor TQP6M9002 802.11a/b/g/n + BT front-end module.
And the rear view of the motherboard. 
Texas Instruments LMV339 Quad General Purpose Low-Voltage Comparators
Texas Instruments SN74AVCH4T245 4-Bit Dual-Supply Bus Transceiver with Configurable Voltage Translation and 3-State Outputs.
Bosch Sensortec BMA150 Digital 3- axis accelerometer Invensense MPU-3050 3 axis gyroscope.
Texas Instruments PS63020 High Efficiency Single Inductor Buck Boost Converter with 4A Switch.
Now turn attention back to the front panel assembly.
The right speaker is held in place by just two Phillips screws.
The speakers conveniently use pressure contacts to make an electrical connection to the motherboard.
Each speaker assembly houses two individual speakers, bringing the total speaker count to four.

The left speaker assembly lifts straight out of the steel mid-frame, while still connected to the battery.
The mid-frame is secured to the front panel assembly by a few screws.
Remove the mid-plane board, which houses the battery, left speaker, and antennas.
This design allows for quick-and-easy access to the front panel and LCD - the most commonly broken components on mobile devices.
The actual antennas in the PlayBook are built into the rear case and speaker modules, and are attached to the antenna cables via pressure contacts.
The camera assembly is easily removed from its recess.
The front camera, rear camera, and top control buttons are all attached as one assembly, making
the replacement of a broken power button or volume buttons very costly.
The headphone jack cable is held in place by a metal retainer.
The right microphone is also attached to this assembly.
Dual microphones presumably allow for noise cancelling to eliminate background noise.
We peel the left microphone off the front panel assembly.
Upon removing a rubber cover and dust grill, we can read: S233 7252
After removing a few retaining screws, the LCD can be lifted off the front panel assembly. This little 7" panel packs a 1024 x 600 resolution.
Upon closer inspection, we find that the frame around the front glass panel is made of magnesium, a strong yet light metal. Many devices are using magnesium for structural components due to its desirable qualities for mobile devices. The Cypress CY8CTMA3 Multi-Touch All-Point TrueTouch projected capacitive touchscreen controller is visible in the last picture. It is attached directly to the digitizer cable.