Lenovo ideapad MIIX 300-10IBY – Disassembling procedure – How to test the AC adapter – How to test the battery - How to remove the case – How to remove the battery - Tablet repair and service

Category: Tablet Repair and Service 

Contents of this article 

  • How to remove the battery
  • How to test the adapter
  • How to test the battrey pack 

Lenovo ideapad MIIX 300-10IBY

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.
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 300-10IBY computers come with a pre-installed Recovery system. In order to save application files and the initial backedup 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 the Recovery System
How to remove the LCD cover
Insert a prying tool between the base cover and the panel module and slide it around the tablet in the direction shown by  1, 2 and 3 to separate the base cover from the rest of the tablet. Then remove the base cover in the direction shown.
Note: Be careful when separating the LCD cover. Do not force apart the LCD cover, otherwise the panel module could be damaged. Use caution when internal plastic tabs are met with the prying tool, excessive force may cause damage.
How to remove the Battery and system board
Peel off the adhesive tape securing the antenna cable. Disconnect the wireless LAN cable (black) 1.
Remove the screws 2.
Remove the system board and battery module in the direction shown by arrow 3.