LENOVO IDEAPAD 300 – HOW TO DISASSEMBLE – HOW TO TEST THE CHARGER – HOW TO REMOVE THE KEYBOARD – HOW TO REMOVE THE HDD

Lenovo ideapad 300 Disassemble procedure

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 AC adapter”
“Checking operational charging”
“Checking the battery pack”
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. 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.

Disassembling procedure 

Hard disk drive(HDD)
Loosen the screws 1 that secure the compartment cover. Remove the compartment cover 2.

Remove the frame fixing screws 3 .

Detach the hard disk drive connector shown by arrows 2 and 3 .

Take out the hard disk drive secured in a metal frame in the direction shown by arrow 4 .

Keyboard

Remove the screws 1.

Pull to unsnap the keyboard in the direction as shown by the arrows 2 , and then lift it up in the direction shown by arrow 3.

Pull the keyboard connector slot cover upward as shown by arrow 4, detach the keyboard cable from the keyboard connector in the direction shown by arrow 5.

LENOVO IDEAPAD 500S LENOVO LAPTOP DISASSEMBLING HOW TO TEST THE AC ADAPTER VOLTAGE – HOW TO REMOVE THE LCD – HOW TO REMOVE THE BUILT IN BATTERY - –

How to test the AC Adapter Voltage – How to remove the LCD – How to remove the built in battery - Lenovo Laptop disassembling – Lenovo ideapad 500S

 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 power supply checkout:
“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 is not lit, 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 is still not lit, replace the system board.

Restore of factory default
The Lenovo ideapad 300S-14ISK/ideapad 500S-14ISK computer comes 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 the laptop 

Base cover
Remove the screws 1. Then remove the base cover 2.

Battery pack

Detach IO board connector in the direction shown by arrows 1 and 2.

Unplug the battery connector 3 and remove the screws 4. Then remove the battery pack in the direction shown by arrow 5.

Hard disk drive

Remove the frame fixing screws 1.

Remove the hard disk drive in the direction shown by arrow 2

LCD unit

Remove the screws 1. Detach LCD connector in the direction shown by arrow 2.

Open the hinges 3, then remove the upper case from the LCD unit in the direction shown by arrow 4

LENOVO YOGA 910 – DISASSEMBLING – HOW TO CHECK THE AC ADAPTER – HOW TO CHECK AND REMOVE BATTERY PACK

Lenovo YOGA 910 – Disassembling – How to check the AC adapter – How to check and remove battery pack

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 fgure:
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 is not lit, 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 is still not lit, replace the system board.
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.
Restore of factory default
The Lenovo YOGA 910-13IKB/Lenovo YOGA 910-13IKB Glass computer comes 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
DISASSEMBLING PROCEDURE
Base cover
Remove the screws 1. Then remove the base cover 2
Battery pack
Peel off the adhesive tape that secures the battery connector 1.
Release the two latches on both edges of the socket at the same time in the directions shown by arrows 2, and then unplug the battery connector in the direction shown by arrow 3. Remove the screws 4, then remove the battery pack 5.

LENOVO YOGA 710-14ISK - YOGA 710-15ISK – HOW TO CHECK THE ACE ADAPTER – DISASSEMBLING PROCEDURE – HOW TO REPLACE THE BATTERY

Lenovo YOGA 710-14ISK - YOGA 710-15ISK – How to check the ace adapter – Disassembling procedure – How to replace the battery

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 fgure:

Note: Output voltage for the AC adapter pin No. 5 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 is not lit, 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 is still not lit, replace the system board.

Restore of factory default
The Lenovo YOGA 710-14ISK/Lenovo YOGA 710-15ISK/Lenovo YOGA 710-14IKB/ Lenovo YOGA 710-15IKB computer comes with pre-installed OneKey Recovery System.In order to save application fles and the initial backed up fles 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 frst boot up, just enter Lenovo OneKey Recovery System and run System Recovery. For details of OneKey Recovery System, see the User Guide for Lenovo OneKey Recovery system.

DISASSEMBLING PROCEDURE 

Base cover
Remove the screws 1 and 2

Insert a prying tool (Disassembling blade) between the base cover and C cover and slide it in the direction shown by arrows 3 to separate the base cover from C cover.

Remove the base cover 4.

Battery pack

Unplug the battery connector 1 and remove the screws 2. Then remove the battery pack 3.

Solid state disk

Remove the screw 1

Remove the solid state disk in the direction shown by arrow 2.

LENOVO YOGA BOOK – HOW TO CHECK THE AC ADAPTER – HOW TO CHECK THE BATTERY – HOW TO REPLACE THE BATTERY – HOW TO DISASSEMBLE THE KEYBOARD

Lenovo Yoga Book – How to check the AC adapter – How to check the Battery – How to replace the battery – How to disassemble the keyboard

Lenovo Yoga Book
Checking the Tab 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 main 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.
KeyBoard DisassemblingHeat the 5mm adhesive surface to 60‐70°C all the way around for about ten minutes.
Place suction cups in the position shown in the photo and slowly lift up the secondary display TP. Once there is a gap, insert the piece for disassembly to 5mm. Do this on all four sides to open it up, and then lift up the secondary display.
Remove the black Mylar. Use tweezers to disconnect the KeyBoard assembly and the main board connected to the FPC interface. Gently pull the FPC, so the main board and the KeyBoard assembly are completely separated.
Note:
1. The power key’s FPC can be easily broken in disassembly.
2. When open, the right side of the motor and the EMR are bonded together. Be careful not to break the motor’s lead wire.
3. The KeyBoard assembly’s FPC connector is located on the top left side. Remember that slow disassembly is required so as not to damage the FPC.
How to replace the Battery
Use a screwdriver to remove the black screws from the battery’s silver sheeting, then remove the sheeting.
Use tweezers to open the interface between the battery FPC and the main board.
Use a blade to pry open the black cover on either side of the battery, and remove the covers.
After the covers are completely separated, you will see four pieces of blue adhesive. Pull out the four pieces of adhesive, and gently remove the battery.

HOW TO RESET - LENOVO YOGA 2 - LENOVO A369I - LENOVO A526 - LENOVO S960 VIBE X - LENOVO VIBE X2 - LENOVO K920 VIBE Z2 PRO

How to reset - Lenovo Yoga 2 - Lenovo A369i - Lenovo A526 - Lenovo S960 Vibe X - Lenovo Vibe X2 - Lenovo K920 Vibe Z2 Pro

Lenovo Yoga 2 - Lenovo A369i - Lenovo A526 - Lenovo S960 Vibe X - Lenovo Vibe X2 - Lenovo K920 Vibe Z2 Pro
Lenovo Yoga 2
Remove unlock pattern remove password on your Lenovo Yoga 2 Android tablet repair using recovery menu Save everything. Back up all of your data.
Android system recovery <3e> LRX22C.YT2-1050L_USR_S100081_1507241439_WW52_ROW dev-keys
1. Press and hold Volume UP + power buttons together for about 8-10 seconds.
2. In DROIDBOOT PROVISION OS menu screen select RECOVERY option using Volume DOWN or UP key.
3. Press POWER or CAMERA button to confirm.
4. Now you get in recovery factory reset option screen.
5. Use Volume down and highlight Wipe data / Factory reset and confirm using power or camera key.
6. Highlight Yes -- delete all user data and confirm again using power or camera key.
7. After it finishes wiping data press power or cam key to reboot your Lenovo Yoga2 tablet / reboot system now.
Second method
1. From the Home screen, press the Menu Key and touch Settings.
2. Touch the Backup and reset
3. Touch Factory data reset.
4. Touch Reset tablet.
5. Touch Erase everything.
Lenovo A369i
Save everything. Back up your data. Remove unlock pattern remove password on your Lenovo A369 Android phone
1. Press and hold both Volume UP + DOWN and the power buttons together for about 10 seconds.
2. When you see the Android robot and NO command press power shortly.
3. In Android system recovery menu highlight Wipe data / Factory reset using Volume DOWN key.
4. Press Volume UP to confirm.
5. Use Volume down again and highlight Yes -- delete all user data and confirm using Volume UP.
6. After it finishes wiping data press Volume UP to reboot system now.
Second method
1. From the Home screen, press the Menu Key and touch Settings.
2. Touch the Privacy
4. Touch Factory data reset.
5. Touch Reset phone.
6. Touch Erase everything.
Lenovo A526
Back up and save everything. Back up your data. Remove unlock pattern remove password on your Lenovo A526 Android phone
1. Remove battery and reinsert it. Make sure the battery has enough power and you charged it before hard reset operation.
2. Press and hold Volume UP + power buttons together for about 8-10 seconds.
3. When Andorid robot and No command displayed press POWER shortly.
4. In Android System recovery menu Use Volume down to highlight Wipe data / Factory reset and confirm using Volume UP.
5. Highlight Yes -- delete all user data and confirm again using Volume UP key.
6. After it finishes wiping data press Volume UP to reboot system now.
Second method
1. From the Home screen, press the Menu Key and touch Settings.
2. Touch the Backup and Reset
4. Touch Factory data reset.
5. Touch Reset phone.
6. Touch Erase everything.
Lenovo A536
Learn how to remove your forgotten password or unlock pattern on your Lenovo A536 mobile phone.
Follow the following instructions to repair your phone or to get access on your mobile. Back up and save everything. Back up all your important data, messages, images etc. Remove unlock pattern remove password on your Lenovo A536 Android phone tutorial.
1.Remove battery and reinsert it. Make sure the battery has enough power and you charged it before hard reset operation.
2.Press and hold Volume UP/DOWN + power buttons together for about 8-10 seconds.
3.When Andorid robot and No command displayed press POWER shortly.
4.In Android System recovery menu Use Volume down to highlight Wipe data / Factory reset and confirm using Volume UP.
5.Highlight Yes -- delete all user data and confirm again using Volume UP key.
6.After it finishes wiping data press Volume UP to reboot system now.
the software way from the menu. If you can access the phone you can factory reset the phone in the following way:
1. From the Home screen, press the Menu Key and touch Settings.
2. Touch the Backup and Reset
4. Touch Factory data reset.
5. Touch Reset phone.
6. Touch Erase everything
Lenovo S960 Vibe X
This is how to remove unlock pattern, remove password on your Lenovo S960 Vibe X Android phone
1. Power off your Lenovo VIBE X phone.
2. Press and hold Volume DOWN and UP buttons.
3. Keep pressing both Volume buttons and press Power button to turn on the phone.
When you see the Android recovery menu release all buttons.
4. Use Volume down button to highlight select Wipe data/Factory reset and use Power key to confirm.
5. Repeat with Yes -- delete all user data.
6. Wait until the phone reboots and Lenovo logo appears. All data wiped out.
Second method
1. From the Home screen, press the Menu Key and touch Settings.
2. Touch the Backup and RESET
3. Touch Factory data reset.
4. Touch Reset phone.
5. Touch Erase everything.
Lenovo Vibe X2
This is how to remove unlock pattern, remove password on your Lenovo Vibe X2 Android phone and wipe all user data. Learn how to remove forgotten password with these easy steps.
1.Power off your Lenovo Vibe X 2 phone.
2.Press and hold Volume DOWN and UP buttons.
3.Keep pressing both Volume buttons and press Power button to turn on the phone.
4.When you see the LENOVO LOGO release POWER but keep pressing the volume keys until Lenovo recoverycomes up.
5.Use the touch screen to select Wipe user data. (Choose english menu language.)
6.Repeat it and confirm on the next screen. Select YES to wipe user data.
Wait until the phone displays the MAIN MENU and select reboot.
Lenovo Vibe X2 factory reset from the menu
If you can access your phone the soft way:
1. From the Home screen, press the Menu Key and touch Settings.
2. Touch the Backup and RESET
3. Touch Factory data reset.
4. Touch Reset phone.
5. Touch Erase everything.
Lenovo K920 Vibe Z2 Pro
This is how to remove unlock pattern, remove password on your Lenovo K920 Vibe Z2 Pro Android phone wipe all data

1,Power off your Lenovo K920 Vibe Z2 Pro phone.
2.Press and hold Volume DOWN and press POWER button to turn on the phone.
3.When you see the LENOVO LOGO release POWER but keep pressing the volume key until a menu with a numbered list comes up.
4.Use the volume down key to select "6. Factory reset" in the list and press power. Note! This will delete everything, all of your data including SDcard files. Be sure to backup all of your data before doing a factory reset!
5.Wait until the phone reboots. The first boot will lasts a little longer than usual. Be patient. Lenovo K920 Factory reset the soft way from the menu if you are able to access the phone:
If you can access your phone the soft way:
1,Touch the Backup and RESET
2.Touch Factory data reset.
3.Touch Reset phone.
4.Touch Erase everything.

LENOVO IDEAPAD Z560 – HOW TO TEST THE AC ADAPTER VOLTAGE – HOW TO TEST THE BATTERY PACK

Lenovo IdeaPad Z560 – How to test the AC adapter Voltage – How to test the battery pack

Lenovo IdeaPad - Z560

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 AC adapter”
“Checking operational charging”
“Checking the battery pack”
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. 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.
To check the battery pack, follow the steps below:
1. Turn off the computer.
2. Remove the battery pack and measure the voltage between battery terminals
1 (+) and 7 (-). See the following figure:

3. If battery output voltage is less than +3.9V DC, the battery is damaged, replace it.

If battery output voltage is less than +9V DC, perhaps the battery has entered into overdischarge protection mode, pre-charge the battery with AC, please replace the battery if battery capacity can not be charged over 0% within 2 hours.
4. If the battery output voltage is more than +9V DC, measure the resistance between battery terminals 5 and 7. The resistance should be 4 to 30 KΩ. If the resistance is not correct, replace the battery pack. If the resistance is correct, check the system board function.

LENOVO IDEAPAD Y471 – DISASSEMBLING PROCEDURE – HOW TO CHECK THE BATTERY PACK – HOW TO REMOVE THE OPTICAL DRIVE

Lenovo ideapad Y471 – Disassembling procedure – How to check the battery pack – How to remove the optical drive

Lenovo ideapad Y471
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 AC adapter”
“Checking operational charging”
“Checking the battery pack”
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. 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.
To check the battery pack, follow the steps below
1. Turn off the computer.
2. Remove the battery pack and measure the voltage between battery terminals 1 (+) and 7 (-). See the following figure:
3. If the voltage is less than +11.0 V DC, the battery pack has been discharged.
Note: Recharging will be continued for at least 3 hours, even though the indicator does not light on.
If the voltage is still less than +11.0 V DC after recharging, replace the battery.
4. If the voltage is more than +11.0 V DC, measure the resistance between battery terminals 5 and 7. The resistance must be 4 to 30 KΩ.
If the resistance is not correct, replace the battery pack. If the resistance is correct, replace the system board.
DISASSEMBLING PROCEDURE 
Battery pack
Unlock the manual battery latch 1. Holding the spring-loaded battery latch in the unlocked position 2, remove the battery pack in the direction shown by the arrow 3
Hard disk drive(HDD)/Memory/Mini PCI Express Card slot compartment cover
Loosen the screws that secure the compartment cover. Remove the compartment cover 2.
Optical drive
Remove the screw 1, insert a screwdriver into the screw hole and push the optical drive in the direction shown by arrow 2. Pull the optical drive out in the direction shown by arrow 3.

LENOVO - M491 – DISASSEMBLING PROCEDURE – HOW TO TEST THE BATTERY PACK - HOW TO TEST THE CHARGER – HOW TO REMOVE THE BOTTOM CASE

Lenovo - M491 – Disassembling procedure – How to test the battery pack - How to test the charger – How to remove the bottom case

Lenovo M491

Power system checkout
To verify a power symptom, do the following:
1. Turn off the computer.
2. Remove the battery pack.
3. Connect the ac power adapter.
4. Check that power is supplied when you turn on the computer.
5. Turn off the computer.
6. Disconnect the ac power adapter and install the charged battery pack.
7. Check that the battery pack supplies power when you turn on the computer.
If you suspect a power problem, refer to the following topics for a checkout:
“Checking the ac power adapter”
“Checking operational charging”
“Checking the battery pack”
Checking the ac power adapter
If the computer fails only when the ac power adapter is used, refer to the information in this topic to check the ac power adapter.
If the power-on indicator does not turn on, check the power cord of the ac power adapter for correct continuity and installation.
To check the ac power adapter, do the following:
1. Unplug the ac power adapter cable from the computer.
2. Measure the output voltage across the plug of the ac power adapter cable. The correct voltages are shown in the following table

Note: The output voltage across pin 2 might differ from the voltage that you measure.

3. Depending on the voltage that you measure, do one of the following:
If the voltage is not correct, replace the ac power adapter

If the voltage is acceptable, do the following:
a. Replace the system board.
Note: Noise from the ac power adapter does not always indicate a defect.
Checking operational charging To check whether the battery pack charges properly during operation, do the following:
Note: Before you begin, install a discharged battery pack or a battery pack that has less than 50% of the total power remaining in the computer.
1. If the battery status indicator does not turn on, remove the battery pack and let it return to room temperature.
2. Reinstall the battery pack.
3. If the indicator still does not turn on, replace the battery pack.
Checking the battery pack
To check detailed battery status information on the operating systems, do the following:
7: Launch the Power Manager program and click the Battery tab.
8: Do one of the following:
Click Start > Solution Center > System > Battery.
Launch the Settings program from the Start screen, and then click Power.
To check the battery pack, do the following:
1. Turn off the computer and disconnect the ac power adapter.
2. Remove the battery pack and measure the voltage between battery terminals 1 (+) and 7 (-). The correct voltages are shown in the following table.

3. Measure the resistance between battery terminals 5 and 7. The resistance should be 4 to 30 KΩ. If the resistance is not correct, replace the battery pack.

4. Depending on the voltage that you measure, do one of the following:
If the voltage is less than +12.0 V dc, recharge the battery pack. If the voltage still is less than +12.0 V dc after recharging, replace the battery pack.

If the voltage is more than +12.0 V dc, discharge the battery pack until the voltage becomes less than +12.0 V dc and then recharge the battery pack. If the voltage still is less than +12.0 V dc after recharging, replace the battery pack.
Note: Recharging will take at least three hours, even if the battery status indicator does not turn on.
5. Replace the system board if the new battery pack is not charged.

DISASSEMBLING PROCEDURE 

How to remove Battery pack

Unlock the battery lock 1. Hold the battery latch in the unlocked position, and then remove the battery pack 2.

How to remove Bottom slot cover

Remove the screws 1, and then remove the bottom slot cover 2.

How to remove Base cover

Remove the screws 1 and 2.

Remove the base cover.

LENOVO THINKPAD T460I - HOW TO TEST THE BATTERY PACK – HOW TO TEST THE CHARGER – HOW TO TEST THE BACKUP BATTERY

Lenovo ThinkPad T460i - How to test the battery pack – How to test the charger – How to test the backup battery

Lenovo ThinkPad T460i: Power system checkout

To verify a symptom, do the following:
1. Turn off the computer.
2. Remove the battery pack.
3. Connect the ac adapter.
4. Check 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. Check 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 power adapter”
“Checking operational charging”
“Checking the battery pack”
“Checking the backup battery”
Checking the ac power adapter
If you computer fails only when the ac power adapter is used, use the instructions in this topic.
If the power problem occurs only when the docking station or the port replicator is used, replace the docking station or the port replicator.
If the power-on indicator does not turn on, check the power cord of the ac power adapter for correct continuity and installation

 If the computer does not charge during operation, go to . To check the ac adapter, do the following:

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 illustration:

Note: Output voltage across pin 2 of the ac power adapter might 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 correctly during operation, do the following:
Note: Before you begin, install a discharged battery pack or a battery pack that has less than 50% of the total power remaining in the computer.
1. If the battery status indicator does not turn on, remove the battery pack and let it return to room temperature.
2. Reinstall the battery pack.
3. If the indicator still does not turn on, replace the battery pack.
Checking the battery pack
The battery status icon in the Windows notification area displays the percentage of battery power remaining. To check for detailed battery status information, do the following:
For 7: Open the Power Manager program and click the Battery tab.
For 8: Open the Lenovo Support program and click Battery Health, or open the Lenovo
Settings program and click Power.
Note: If the battery pack becomes hot, it may not be able to charge. Remove it from the computer and leave it at room temperature for a while. After it cools down, reinstall and recharge it.
To check the battery pack, do the following:
1. Turn off the computer and disconnect the ac power adapter.
2. Remove the battery pack and measure the voltage between battery terminals 1 (+) and 7 (-). The correct voltage are shown in the following table.

3. Measure the resistance between battery terminals 5 and 7. The resistance must be 4 to 30 K Ω. If the resistance is not correct, replace the battery pack.

4. Depending on the voltage that you measure, do one of the following:
If the voltage is less than +11.0 V dc, recharge the battery pack. If the voltage is still less than +11.0 V dc after recharging, replace the battery pack.
If the voltage is more than +11.0 V dc, discharge the battery pack until the voltage becomes less than +11.0 V dc and then recharge the battery pack. If the voltage still is less than +11.0 V dc after recharging, replace the battery pack.
Note: Recharging will take at least three hours, even if the battery status indicator does not turn on.
5. Replace the system board if the new battery pack is not charged.
Checking the backup battery
Do the following:

1. Power off the computer, and unplug the ac adapter from it.
2. Turn the computer upside down.
3. Remove the battery pack
4. Remove the backup battery
5. Measure the voltage of the backup battery. See the following illustration.

If the voltage is correct, replace the system board.

If the voltage is not correct, replace the backup battery.
If the backup battery discharges quickly after replacement, replace the system board.

LENOVO IDEAPAD G700 – G710 – HOW TO TEST THE BATTERY CHARGE – HOW TO TEST THE BATTERY PACK VOLTAGE

Lenovo ideapad G700 – G710 – How to test the Battery charge – How to test the battery pack Voltage

Lenovo ideapad  G700 – G710

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 AC adapter”
“Checking operational charging”
“Checking the battery pack”
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. 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.
To check the battery pack, follow the steps below:
1. Turn off the computer.
2. Remove the battery pack and measure the voltage between battery terminals
1 (+) and 7 (-). See the following figure:

3. If the voltage is less than +11.0 V DC, the battery pack has been discharged.

Note: Recharging will be continued for at least 3 hours, even though the indicator does not light on.
If the voltage is still less than +11.0 V DC after recharging, replace the battery.
4. If the voltage is more than +11.0 V DC, measure the resistance between battery terminals 5 and 7. The resistance must be 4 to 30 KW. If the resistance is not correct, replace the battery pack. If the resistance is correct, replace the system board.

LENOVO IDEAPAD Z475 – DISASSEMBLING PROCEDURE – HOW TO REMOVE THE BATTERY – HOW TO REMOVE THE BACK CASE – HOW TO REMOVE THE KEYBOARD

Lenovo Ideapad Z475 – Disassembling procedure – How to remove the battery – How to remove the back case – How to remove the keyboard

Lenovo Ideapad Z475: 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.

To Restore factory default
The Lenovo Z/P Series 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 screws 1.

Insert the screwdriver into one of the screw hole on the bottom 2. Then pull the keyboard out of the keyboard bezel 3.

Lift the keyboard a little, and then detach the connectors in the direction shown by arrows 4 5. Remove the keyboard/ 

How to remove Optical drive

Remove the screw 1

Insert a screwdriver into the screw hole and push the optical drive.. Pull the optical drive out.

How to remove Base cover

Remove the four screws 1

Remove the two rubber feet 2. Remove a total of eight screws (two 3, three 4 and three 5) from the bottom.

Remove the base cover. 

How to remove Battery pack

Detach the battery pack connector in the direction shown by arrow 1, remove the two screws 2.

Remove the battery pack.

LENOVO IDEAPAD Y471 – DISASSEMBLING PROCEDURE – HOW TO CHECK THE BATTERY BACK – HOW TO REMOVE THE OPTICAL DRIVE

Lenovo ideapad Y471 – Disassembling procedure – How to check the battery back – How to remove the optical drive

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 AC adapter”
“Checking operational charging”
“Checking the battery pack”
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. 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.
To check the battery pack, follow the steps below:
1. Turn off the computer.
2. Remove the battery pack and measure the voltage between battery terminals 1 (+) and 7 (-). See the following figure:

3. If the voltage is less than +11.0 V DC, the battery pack has been discharged.

Note: Recharging will be continued for at least 3 hours, even though the indicator does not light on.
If the voltage is still less than +11.0 V DC after recharging, replace the battery.
4. If the voltage is more than +11.0 V DC, measure the resistance between battery terminals 5 and 7. The resistance must be 4 to 30 KΩ.
If the resistance is not correct, replace the battery pack. If the resistance is correct, replace the system board.

DISASSEMBLING PROCEDURE: Battery pack

Unlock the manual battery latch. Holding the spring-loaded battery latch in the unlocked position, remove the battery pack.

Hard disk drive(HDD)/Memory/Mini PCI Express Card slot compartment cover

Loosen the screws that secure the compartment cover. Remove the compartment cover.

Optical drive

Remove the screw, insert a screwdriver into the screw hole and push the optical drive. Pull the optical drive out.

LENOVO G450 – HOW TO TEST THE BATTERY PACK – HOW TO TEST THE AC ADAPTER

Lenovo G450 – How to test the battery pack – how to test the AC adapter

How to test the battery pack – how to test the AC adapter – How to remove the battery -  Lenovo G450

Lenovo G450

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 AC adapter”
“Checking operational charging”
“Checking the battery pack”
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. 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.
To check the battery pack, follow the steps below:
1. Turn off the computer.
2. Remove the battery pack and measure the voltage between battery terminals
1 (+) and 7 (-). 

3. If the voltage is less than +11.0 V DC, the battery pack has been discharged.

Note: Recharging will be continued for at least 3 hours, even though the
indicator does not light on.
If the voltage is still less than +11.0 V DC after recharging, replace the battery.
4. If the voltage is more than +11.0 V DC, measure the resistance between
battery terminals 5 and 7. The resistance must be 4 to 30 KΩ.
If the resistance is not correct, replace the battery pack. If the resistance is correct, replace the system board.

Battery pack

Unlock the manual latch 1. Slide the spring-loaded latch to the unlocked position to eject the battery pack. Lift up the inner edge of the battery pack, pivoting it on the outer edge. Slide the battery pack in the indicated direction.