Lenovo S5000 tablet – Disassembling procedure – How to test the AC adapter voltage – How to remove the Rear cover – Tablet repair and Service

Category: Tablet repair and Service 

Contents of this article 

• How to check the AC adapter
• How to disassemble the tab 
• How to remove the rear cover 

Lenovo S5000 tablet 

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 Computer AC Charger”
“Checking the internal battery status”
Checking the Computer AC Charger
When you use the computer AC Charger to charge the tablet but no power is charged, see the instructions in this topic to check the computer AC Charger.
To check the computer 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 Battery in the Device section on the Android Settings screen.
3. The accurate percentage of the remaining battery power is shown on the screen.

DISASSEMBLING PROCEDURE 

SIM card holder
1. Insert a pin or a piece of steel wire into the hole on the SIM card holder to unlock and release the SIM card holder from the socket.

2. Remove the SIM card holder.

Rear cover and side key
For access, remove the following FRU:
1. Hold the computer in one hand and use a guitar pick to unlock the rear cover from the computer along the joint line.

2. Remove the rear cover.

3. Remove the side key

Lenovo ideapad Y400 – How test the AC adapter – How to check the battery pack – Laptop repair and service

Category: Laptop repair and Service 

Contents of this article 

• How to test the AC adapter 
• How to test the battery pack
• How to check the optional charger 

Lenovo ideapad Y400

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.

Lenovo ideaTab S2110A – How to disassemble ideatab S2110A – How to test the AC adapter – How to test the battery pack – How to replace the battery – Tablet repair and service

Category: Tablets Repair and service 

Contents of this article 

• How to test the battery pack
• How to test the charger
• How to replace the battery 

Lenovo ideaTab S2110A 

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 thepercentage 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.

DISASSEBMLING 

Battery pack

Pull out the SIM card slot cover with a fingertip in the direction shown by the arrow 1.

Open the back cover along the device frame with a flat blade in the direction shown by arrows 2. Lift the back cover in the direction shown by the arrow 3.

Disconnect the battery connector 1, then remove the battery by holding the right edge of the battery pack in the direction shown by the arrow.

HP Tablet disassembling procedure - HP Elite x2 1012 G1 – how to replace the battery – How to remove the back cover – How to remove the display – Tablet repair and Service

Category: Tablet repair and service 

Contents of this article 

• How to remove the back cover  
• How to remove the SSD 
• How to removal the battery 

HP Elite x2 1012 G1

DISASSEMBLING PROCEDURE 

How to remove Back cover

Before removing the back cover, follow these steps:
1. Turn oƫ the computer. If you are unsure whether the computer is oƫ or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the following components:
Keyboard (select products only)
Remove the back cover:
Remove the 6 Torx screws under the kickstand (1).

How to remove Display panel

Before removing the display panel, follow these steps:
1. Turn oƫ the computer. If you are unsure whether the computer is oƫ or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the following components:
a. Keyboard
b. Back cover
Remove the display panel:
1. Use a suction tool to loosen all 4 corners of the display panel (1), and then lift the display panel (2) to remove it.

2. Disconnect the touch board cable (1) and the display cable (2), and then remove the display panel (3).

How to remove Touch controller board

Before removing the touch controller board, follow these steps:
1. Turn oƫ the computer. If you are unsure whether the computer is oƫ or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the following components:
a. Keyboard)
b. Back cover
c. Display panel
Remove the touch controller board:
Remove the 2 Phillips screws (1), and then remove the touch controller board (2).

How to remove WLAN module

Before removing the WLAN module, follow these steps:
1. Turn oƫ the computer. If you are unsure whether the computer is oƫ or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the following components:
a. Keyboard
b. Back cover
c. Display panel
d. Touch controller board
Remove the WLAN module:

Remove 1 Phillips M2.0x2.0 screw (1), disconnect the 2 cables (2), slide the WLAN module to the right, and then remove it (3).

How to remove WWAN module

Before removing the WWAN module, follow these steps:
1. Turn oƫ the computer. If you are unsure whether the computer is oƫ or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the following components:
a. Keyboard
b. Back cover
c. Display panel
d. Touch controller board)
e. WLAN module
Remove the WWAN module:
Remove 1 Phillips M2.0x2.0 screw (1), disconnect the 2 cables (2), slide the WWAN module to the right, and then remove it (3).

How to remove Solid-state drive

Before removing the solid-state drive, follow these steps:
1. Turn oƫ the computer. If you are unsure whether the computer is oƫ or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the following components:
a. Keyboard
b. Back cover
c. Display panel
d. Touch controller board
e. WLAN module
Remove the solid-state drive:
1. Remove 1 Phillips M2.0x2.0 screw (1).

2. Slide the solid-state drive (2) to the right, and then lift the solid-state drive to remove it.

How to remove Battery

Before removing the display panel, follow these steps:
1. Turn oƫ the computer. If you are unsure whether the computer is oƫ or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the following components:
a. Keyboard
b. Back cover
c. Display panel
d. Touch controller board
e. WLAN module
f. WWAN module
g. Solid-state drive
h. Battery
Remove the battery:
1. Remove 5 silver Phillips M1.6x2.5 screws in numbered order left to right (1).
2. Remove 2 black Phillips M1.6x2 screws (2).

3. Disconnect the battery cable (3), and then lift the battery (4) to remove it.

Lenovo thinkpad 8 – How to test the AC adapter – How to reset the tablet to factory default – How to make recovery media – How to Disassemble thinkpad 8 – Tablets repair and service

Category: Tablet Repair and Service 

Contents of this article 

• How to Reset the tablet
• How to Check the AC Adapter voltage
• How to remove the battery 

Lenovo thinkpad 8

Checking the ac power adapter
When you use the ac adapter to charge the tablet but no power is charged, see the instructions in this topic to check the ac adapter.
To check the ac adapter, do the following:
1. Disconnect the power cord from the tablet.
2. Measure the output voltage at the plug of the power cord. Refer to the following illustration:

Note: If Pin 2 is connected to the ground, it can not charge.

3. If the voltage is not correct, replace the power cord.
4. If the voltage is acceptable, replace the system board.

Refreshing Lenovo tablet
If your tablet does not perform well and the problem might be caused by a recently installed program, you can refresh your tablet without losing your personal files or changing your settings.
Attention: If you refresh your tablet, the programs that came with your tablet and the programs that you installed from Windows Store will be reinstalled, but all other programs will be removed.
To refresh your tablet, do the following:
1. Move your pointer to the top-right or bottom-right corner of the screen to bring up the charms. Tap Settings > Change PC settings > Update and recovery >  Recovery.
2. In the Refresh your PC without affecting your files section, tap Get started.
3. Follow the instructions on the screen to refresh your tablet.

Resetting your tablet to the factory default settings
If you want to recycle your tablet or just start over, you can reset your tablet to the factory default settings. Resetting the tablet will reinstall the operating system, reinstall all the programs that came with your tablet, and reset all the settings to the factory default settings.
Attention: If you reset the tablet to the factory default settings, all your personal files and settings will be deleted. To avoid data loss, make a backup copy of all the data that you want to keep.
To reset your tablet to the factory default settings, do the following:
1. Move your pointer to the top-right or bottom-right corner of the screen to bring up the charms. Tap Settings > Change PC settings > Update and recovery > Recovery.
2. In the Remove everything and reinstall Windows section, tap Get started. Then tap Next to confirm the operation.
3. Depending on your needs, do one of the following:
To perform a quick format, tap Just remove my files to start the process. The process will take several minutes.

Creating and using recovery media
You can create recovery media as backups for the Windows recovery environment and the Windows recovery image. If you cannot start the tablet, you can use recovery media to troubleshoot and fix the problems on your tablet.
It is recommended that you create recovery media as early as possible. Once you create recovery media, keep them in a safe place and do not use them to store other data.
Creating recovery media
To create recovery media, you need a USB drive with at least 16 GB of storage. The required USB capacity depends on the size of the recovery image.
Attention: Creating recovery media will delete anything stored on the USB drive. To avoid data loss, make a backup copy of all the data that you want to keep.
To create recovery media, do the following:
Note: Ensure that your tablet is connected to ac power.
1. Move your pointer to the top-right or bottom-right corner of the screen to bring up the charms, and tap Search.
2. Typerecovery in the Search field and tap the Search button. Then tap Create a recovery drive.
3. Tap Yes in the User Account Control window to allow the Recovery Media Creator program to start.
4. Ensure that you select the Copy the recovery partition from the PC to the recovery drive. option. Then tap Next.

Important: If you clear the Copy the recovery partition from the PC to the recovery drive. option, you will create recovery media without the recovery partition content. You still can start the tablet from the recovery media, but you might be unable to recover your tablet if the recovery partition on your tablet is damaged.
5. Connect a proper USB drive then tap Next.
6. Tap Create in the Recovery Drive window. The creation of the recovery media starts.
7. When the creation of the recovery media finishes, do one of the following:
To keep the recovery partition on your tablet, tap Finish.
To delete the recovery partition on your tablet, tap Delete the recovery partition.
Attention: If you delete the recovery partition on your tablet, do keep the recovery media in a safe place. The Windows recovery image will not be stored in your tablet anymore, and you will need the recovery media to refresh or reset your tablet.
8. Remove the USB drive. The recovery media are created successfully.
Using recovery media
If you cannot start your tablet, or if you cannot start the Windows recovery image on your tablet, use recovery media to recover your tablet. To use recovery media, do the following:
Note: Ensure that your tablet is connected to ac power.
1. Press the power button and the volume-up button at the same time when you turn on the tablet.
2. The ThinkPad Tablet Setup program main menu opens.
3. Tap Startup.
4. In the Boot submenu, drag the recovery drive to the first place to select it as the boot device.
5. Save configuration changes and restart the tablet.
6. Following the instructions on the screen to recover the tablet.

DISASSEMBLING PROCEDURE 

Back cover assembly

Use a plastic pry tool to detach the latches of the back cover assembly 3.

Built-in battery

Removal steps of the built-in battery

Remove the connector 1 , Then remove the screws 2

Remove the battery in the direction arrow 3