Friday, April 01, 2016

Lenovo IdeaTab A2107 – How to disassemble ideatab – How to test the AC charger – How to remove the battery pack – How to remove the mother board – tablet repair and service

Category: Laptop repair and Service 

Contents of this article 

  • How to test the charger
  • How to remove the battery pack
  • How to remove the mother board 

Lenovo IdeaTab A2107

To verify a symptom, follow the steps below:
1. Turn off the computer.
2. Remove the battery pack.
3. Connect the AC adapter.
4. Make sure that power is supplied when you turn on the computer.
5. Turn off the computer.
6. Disconnect the AC adapter and install the charged battery pack.
7. 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 IdeaTab AC Charger”
“Checking the internal battery status”
Checking the IdeaTab AC Charger
When you use the IdeaTab AC Charger to charge the tablet but no power is charged, see the instructions in this topic to check the IdeaTab AC Charger.
To check the IdeaTab AC Charger, do the following:
1. Disconnect the micro-USB cable from the tablet.
2. Measure the output voltage across the connector marked B of the micro-USB cable. Refer to the following figure:
Note: The output voltage across pin 3 of the micro-B connector might be different from the one you are servicing.
3. If the voltage is not correct, replace the micro-USB cable.
4. If the voltage is acceptable, replace the system board.
Checking the internal battery status
To check the battery status of the tablet, do either of the following:
Approximate information about the battery status
Get the approximate status of the battery at any time by checking the battery status icon on the system bar in the upper-right corner of the screen. The shorter the green bar is, the less the battery power remains.
Accurate information about the battery status
To get the accurate information about the battery status of the tablet, do the following:
1. Open the Android Settings screen.
To open the Android Settings screen, do either of the following:
From the main Home screen, touch the Android Settings icon on
Lenovo Launch Zone. The Android Settings screen is displayed. Touch the application icon from the action bar and then touch Settings.
The Android Settings screen is displayed.
2. Touch About Tablet on the Android Settings screen.
3. Touch Status to view the accurate percentage of the remaining battery power. You also can touch Battery use to check what applications are consuming battery power.
DISASSEMBLING PROCEDURE 
How to remove Battery pack
Remove screw 1 and push the battery pack backward in the direction shown by arrow 2.
How to remove Base cover
Remove 16 screws 1 on the base cover with the screw driver
Remove the base cover in the direction shown by arrow 3.
Disconnect the battery connector 3 , insert a flat blade under the bottom right of the battery and carefully pry out the battery in the direction as shown below.
How to remove System board
Remove two screws 1.
Peel off the microphone 4 , vibrator 9 , speakers 10, detach the LCD connector 2, touch connector 3, USB board connector 5, back camera connector 6, power button board connector 7,volume up/down button connector 8.
Remove the system board in the direction shown by arrow 11 .