Tuesday, March 22, 2016

Lenovo IdeaPad Miix 2 8 – Disassembling procedure – Step by step disassembling procedure – Charging adapter test procedure – Ipads and ipods repair and service

Category: ipads and Ipods Repair and Service 

Contents of this article 

  • Charger testing procedure 
  • How to remove the case 
  • How to replace the battery 

Lenovo IdeaPad Miix 2 8

To verify a symptom, follow the steps below:
1. Turn off the computer.
2. Connect the AC adapter.
3. Make sure that power is supplied when you turn on the computer.
4. Turn off the computer.
5. Disconnect the AC adapter.
6. Make sure that the battery pack supplies power when you turn on the computer.
If you suspect a power problem, see the appropriate one of the following power supply checkouts:
“Checking the AC adapter”
“Checking operational charging”
Checking the AC adapter
You are here because the computer fails only when the AC adapter is used.
If the power-on indicator does not turn on, check the power cord of the AC adapter for correct continuity and installation.
operational charging”.
To check the AC adapter, follow the steps below:
1. Unplug the AC adapter cable from the computer.
2. Measure the output voltage at the plug of the AC adapter cable. See the following figure:
Note: Output voltage for the AC adapter pin No. 2 may differ from the one you are servicing.
3. If the voltage is not correct, replace the AC adapter.
4. If the voltage is acceptable, do the following:
Replace the system board.
Note: Noise from the AC adapter does not always indicate a defect.
Checking operational charging
To check whether the battery charges properly during operation, use a discharged battery pack or a battery pack that has less than 50% of the total power remaining when installed in the computer.
Perform operational charging. If the battery status indicator or icon does not light on, remove the battery pack and let it return to room temperature. Reinstall the battery pack. If the charge indicator or icon is still off, replace the battery pack.
If the charge indicator still does not light on, replace the system board. Then reinstall the battery pack.
Restore of factory default
The Lenovo IdeaPad Miix 2 8 computers come with pre-installed Recovery system.In order to save application files and the initial backed up files of the system, the hard disk in a Lenovo computer includes a hidden partition when it is shipped. If you need to restore the system to the point of your first boot up, just enter Lenovo Recovery system and run System Recovery.
DISASSEMBLING PROCEDURE 
How to remove LCD cover
Remove the LCD cover in the direction shown by arrow 1.
How to remove Battery pack
Disconnect the battery connector in the direction shown by arrow 1, then remove the six screws 2.
Remove the battery pack in the direction shown by arrow 3.
How to remove 3G card (on select models)
Disconnect the 3G card cable (blue) 1. Then remove the one screw 2.
Pic 5
In step 1, unplug the jacks by using the removal tool antenna RF connector (P/N: 51078891), or pick up the connectors with your fingers and gently unplug them in the direction shown by the arrows.
Remove the 3G card in the direction shown by arrow 3.
How to remove Speakers
Unplug one speaker connector in the direction shown by arrow 1.
Remove the speakers in the direction shown by arrow 2
How to remove System board
Detach the front camera board, rear camera and LCD cable connectors shown by arrow 1 and 2. Unplug the vibrator board and speaker connectors shown by arrow 3. Disconnect antenna GPS (gray), Main antenna wifi (black), Aux antenna wifi (white) shown by arrow 4. Disconnect touch screen connector shown by arrow 5. Then remove the screw 7 and three screws 6.
How to remove Integrated camera
Remove the integrated camera in the direction shown by arrow 1