Friday, April 08, 2016

Lenovo IdeaPad Yoga 11S – Disassembling procedure – How to test the battery charger – Hoe to remove the back cover – Key board removal – How to remove the battery - Tablets repair and service

Category: Tablets Repair and Service 

Contents of this article 

  • How to test the AC adapter 
  • How to remove the keyboard 
  • How to remove the battery pack 

Lenovo IdeaPad Yoga 11

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 Yoga 11S computers come with pre-installed OneKey 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 OneKey Recovery System and run System Recovery.
DISASSEMBLING PROCEDURE 
How to remove Keyboard
Remove the two rubber feet in the direction shown by arrows 1, and then remove the two screws 2 and two screws 3.
Lift the keyboard a little 4 and detach the connector in the direction shown by arrows 5 6, then remove the keyboard.
How to remove Keyboard bezel
Remove the nine screws 1.
Detach the touch pad connector in the direction shown by arrows 2 3. Remove the two screws 4.
Remove the base cover in the direction shown by arrow 5.
How to remove Battery pack
Detach the RTC battery connector in the directions shown by arow 1
Remove the RTC battery
Remove the IO board FPC
Detach the battery pack connector in the direction shown by arrow 4, remove the screw 5.
Remove the battery pack