Tuesday, March 01, 2016

LENOVO ideapad - S210 Touch - S215 Touch –AC adaptor Voltage testing procedure – Optional charger testing – Checking the battery pack – Disassembling the back cover – Laptop repair and service

Category: Laptop Repair and Service 

Contents of this article 

  • Checking the ac adapter
  • Battery pack checking
  • Disassembling procedure 



LENOVO ideapad - S210 Touch - S215 Touch 

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.
# If the computer does not charge during operation, go to “Checking 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,
• 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. If it is still not charged, go to the next section.
Checking the battery pack
Battery charging does not start until the Power Meter shows that less than 95% of the total power remains; under this condition the battery pack can charge to 100% of its capacity. This protects the battery pack from being overcharged or from having a shortened life.
To check your battery, move your cursor to the Power Meter icon in the icon tray of the Windows taskbar and wait for a moment (but do not click it), and the percentage of battery power remaining is displayed. To get detailed information about the battery, double-click the Power Meter icon.
Note: If the battery pack becomes hot, it may not be able to be charged. Remove it from the computer and leave it at room temperature for a while. After it cools down, reinstall and recharge it.
Power-on password
A power-on password (POP) protects the system from being powered on by an unauthorized person. The password must be entered before an operating system can be booted.
Hard-disk password
There are two hard-disk passwords (HDPs):
+ User HDP - for the user
+ Master HDP - for the system administrator, who can use it to get access to the hard disk drive even if the user has changed the user HDP
Supervisor password
A supervisor password (SVP) protects the system information stored in the BIOS Setup Utility. The user must enter the SVP in order to get access to the BIOS Setup Utility and change the system configuration.
DISSEMBLING
Removal steps of battery pack
Unlock the manual battery latch . Holding the spring-loaded battery latch in
the unlocked position , remove the battery pack in the direction shown by the
arrow .
Opening the back case 
Open two rubber foot pads with a screw driver in the direction shown by arrows , then remove two screws , nine screws.


Open the back cover along the device frame with a flat blade in the direction shown by arrows and then lift the back cover in the direction shown by arrow 7