Thursday, March 31, 2016

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

Category: Laptop Repair and service 

Contents of this article 

  • How to test the ace adapter 
  • How to replace the battery and HDD 
  • How to Remove the LCD 

Lenovo ideapad 500S

Power checkouts 
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.

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.

Acer Aspire laptop troubleshooting – Intermittent problem – Video problem – Audio problems – HDD related problems – Laptop repair and service

Category: Laptop Repair and Service 

Contents of this article 

  • Troubleshooting video problems
  • Troubleshooting Audio problems
  • HDD failures  

Acer Aspire laptop

TROUBLESHOOTING 
Computer Shuts Down Intermittently
If the system powers off at intervals, perform the following.
1. Makes sure the power cable is properly connected to the computer and the electrical outlet.
2. Remove all extension cables between the computer and the outlet.
3. Remove all surge protectors between the computer and the electrical outlet. Plug the computer directly into a known serviceable electrical outlet.
4. Disconnect the power and open the casing to check the Thermal Unit and fan airways are free of obstructions.
5. Remove all external and non-essential hardware connected to the computer that are not necessary to boot the computer to the failure point.
6. Remove any recently installed software.
No POST or Video
If the POST or video does not appear, perform the following, one at a time.
1. Make sure that internal display is selected. Switching between internal and external by pressing Fn+F5. Reference Product pages for specific model procedures.
2. Make sure the computer has power by checking for one of the following:
# Fans start up 3 Status LEDs illuminate
3. Drain stored power by removing the power cable and battery. Hold the power button for 10 seconds.
4. Connect the power and reboot the computer.
5. Connect an external monitor to the computer and switch between the internal display and the external display is by pressing Fn+F5.
6. If the POST or video appears on the external display only.
7. Disconnect power and all external devices including port replicators or docking stations. Remove any memory cards and CD/DVD discs.
8. Start the computer. If the computer boots correctly, add the devices one by one until the failure point is discovered.
9. Reseat the memory modules.
10. Remove the drives
Abnormal Video
If the video appears abnormal, perform the following, one at a time.
1. Boot the computer.
# If permanent vertical/horizontal lines or dark spots appear in the same location, the LCD is faulty and should be replaced.
# If extensive pixel damage is present (different colored spots in the same locations on
the screen), the LCD is faulty and should be replaced
NOTE:Make sure that the computer is not running on battery alone as this may reduce display brightness.
2. Adjust the brightness to its highest level. Refer to the User Manual for instructions on adjusting the settings. If the display is too dim at the highest brightness setting, the LCD is faulty and should be replaced.
3. Check the display resolution is correctly configured:
# Minimize or close all Windows.
# If display size is only abnormal in an application, check the view settings and control/mouse wheel zoom feature in the application.
# If desktop display resolution is not normal, right-click on the desktop and select
Personalize Display Settings.
# Click and drag the Resolution slider to the desired resolution.
# Click Apply and check the display. Readjust if necessary.
4. Roll back the video driver to the previous version if updated.
5. Remove and reinstall the video driver.
6. Check the Device Manager to determine that:
# The device is properly installed. There are no red Xs or yellow exclamation marks
# There are no device conflicts
# No hardware is listed under Other Devices.
Sound Problems
Perform the following, one at a time.
1. Boot the computer.
2. Navigate to Start > Control Panel > System and Maintenance > System > Device Manager. Check the Device Manager to determine that:
#The device is properly installed
# There are no red Xs or yellow exclamation marks
# There are no device conflicts
# No hardware is listed under Other Devices
3. If updated recently, roll back the audio driver to the previous version.
4. Remove and reinstall the audio driver.
5. Make sure that all volume controls are set mid range:
# Click the volume icon on the taskbar
# Drag the slider to 50. Confirm that the volume is not muted.
# Click Mixer to verify that other audio applications are set to 50 and not muted.
6. Navigate to Start´ Control Panel´ Hardware and Sound´ Sound. Confirm that Speakers are selected as the default audio device (green check mark).
NOTE:If Speakers does not show, right-click on the Playback tab and select Show
Disabled Devices (clear by default).
7. Select Speakers and click Configure to start Speaker Setup. Follow the on-screen prompts to configure the speakers.
8. Remove any recently installed hardware or software.
9. Restore system and file settings from a known good date using System Restore.
10. If the issue is remains, repeat step 9, selecting an earlier time and date.
11. Reinstall the Operating System.
Microphone Failure
1. Check that the microphone is enabled. Navigate to Start > Control Panel > Hardware and Sound > Sound and select the Recording tab.
2. Right click on the Recording tab and select Show Disabled Devices (clear by default). The microphone appears on the Recording tab.
3. Right click on the microphone and select Enable.
4. Select the microphone then click Properties. Select the Levels tab.
5. Increase the volume to the maximum setting and click OK.
6. Test the microphone hardware:
# Select the microphone and click Configure.
# Select Set up microphone.
# Select the microphone type from the list and click Next.
# Follow the on-screen prompts to complete the test.
Other Functions Failure
HDD Not Operating Correctly
If the HDD fails to operate correctly, perform the following:
1. Disconnect all external devices.
2. Run a complete virus scan using up-to-date software to confirm the computer is virus free.
3. Run the Windows Vista Startup Repair Utility:
a. Insert the Windows Vista Operating System DVD in the ODD and restart the computer.
b. When prompted, press any key to start to the operating system DVD.
c. When the Install Windows screen appears, click Next.
d. Select Repair your computer.
e. When the System Recovery Options screen appears, click Next.
f. Select the appropriate operating system, and click Next.
NOTE: Click Load Drivers if controller drives are required.
g. Select Startup Repair.
NOTE: Startup Repair attempts to locate and resolve issues with the computer.
h. When complete, click Finish.
If an issue is discovered, follow the on-screen information to resolve the problem.
1. Run the Windows Memory Diagnostic Tool. For more information see Windows Help and Support.
2. Restart the computer and press F2 to enter the BIOS Utility. Check the BIOS settings are correct and that CD/DVD drive is set as the first boot device on the Boot menu.
3. Confirm all cables and jumpers on the HDD and ODD are set correctly.
4. Remove any recently added hardware and associated software.
5. Run the Windows Disk Defragmenter. For more information see Windows Help and Support.
6. Run Windows Check Disk by entering chkdsk /r from a command prompt. For more information see Windows Help and Support.
7. Restore system and file settings from a known good date using System Restore.
8. If the issue is not fixed, repeat the preceding steps and select an earlier time and date.
9. Replace the HDD.
Intermittent Problems
Intermittent system hang problems can be caused by a variety of reasons that have nothing to do with a hardware defect, such as: cosmic radiation, electrostatic discharge, or software errors. FRU replacement should be considered only when a recurring problem exists.
When analyzing an intermittent problem, perform the following:
1. Run the advanced diagnostic test for the system board in loop mode at least 10 times.
2. If no error is detected, do not replace any FRU.
3. If an error is detected, replace the FRU. Rerun the test to verify that there are no more errors.
Undetermined Problems
The diagnostic problems does not identify which adapter or device failed, which installed devices are incorrect, whether a short circuit is suspected, or whether the system is inoperative.
Perform the following procedures to isolate the failing FRU (do not isolate non-defective FRU).
NOTE: Verify that all attached devices are supported by the computer.
NOTE: Verify that the power supply being used at the time of the failure is operating correctly.
1. Remove power from the computer.
2. Visually check them for damage. If any problems are found, replace the FRU.
3. Remove or disconnect all of the following devices:
# Non-Acer devices
# Printer, mouse, and other external devices
# Battery pack
# Hard disk drive
# DIMM
# CD-ROM/Diskette drive Module
# PC Cards
4. Apply power to the computer.
5. Determine if the problem has changed.
6. If the problem does not recur, connect the removed devices one at a time until failing FRU is found.
7. If the problem remains, replace the following FRUs one at a time. Do not replace a non-defective FRU:
# System board
# LCD assembly

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

How to disassemble HP envy laptop – HP ENVY 14 – Step by step disassembling procedure – How to remove the keyboard – How to remove the top cover – How to remove the battery – Laptop repair and service

Category: Laptop Repair and Service 

Contents of this article 

  • How to remove the keyboard 
  • How to remove the top cover 
  • How to remove the RTC battery 

HP ENVY 14

DISASSEMBLING PROCEDURE 
How to remove Battery
Before disassembling the computer, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer.
Remove the battery:
1. Slide the battery cover release latch (1). (The battery cover releases forward (2)).
2. Remove the battery cover. The battery cover is included in the Door Kit, spare part numbers 608384-001 (for use only with standard computer models) and 629879-001 (for use only with Beats Edition computer models)
3. Slide the right battery release latch (1) to unlock the battery.
4. Slide and hold the left battery release latch (2) to release the battery.
5. Pull the battery tab (3), and then remove the battery from the computer.
How to remove SIM
Before removing the SIM, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer.
4. Remove the battery cover and battery
Remove the memory module:
1. Press in on the SIM (1) to release it from the SIM slot.
2. Remove the SIM (2) from the SIM slot.
How to remove Mass storage device
Before removing the mass storage device, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer.
4. Remove the battery cover and battery
Remove the mass storage device:
1. Remove the four Phillips PM2.0×3.0 screws that secure the mass storage device to the computer.
2. Use the Mylar tab (1) to slide the mass storage device to the right and disconnect it from the system board.
3. Lift the mass storage device (2) out of the mass storage device bay.
How to remove WWAN module
Before removing the WWAN module, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer.
4. Remove the battery cover and battery
5. Remove the hard drive
Remove the WWAN module:
1. Disconnect the WWAN antenna cables from the terminals on the WWAN module.
2. Remove the two Phillips PM2.0×3.0 screws that secure the WWAN module to the system board. (The WWAN module tilts up.)
3. Remove the WWAN module by pulling the module away from the slot at an angle.
How to remove RTC battery
Before removing the RTC battery, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer.
4. Remove the battery cover and battery
5. Remove the memory module/wireless module compartment cover
Remove the RTC battery:
1. Disconnect the RTC battery cable from the system board.
2. Remove the RTC battery from the system board. The RTC battery is attached to the system board with double-sided tape.
How to remove Top cover
Before removing the top cover, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer.
4. Remove the battery cover and battery
5. Remove the memory module/wireless module compartment cover
Remove the top cover:
1. Remove the eight Phillips PM2.5×7.0 screws that secure the top cover to the computer.
2. Remove the three Phillips PM2.0×3.0 screws that secure the top cover to the computer in the battery bay.
3. Turn the computer right side up, with the front toward you.
4. Open the computer as far as it will open.
5. Lift the front edge of top cover (1) until the TouchPad cable is accessible.
6. Release the ZIF connector to which the TouchPad cable is attached, and then disconnect the cable
(2) from the system board.
7. Slide the top cover (1) forward until the power button board cable, keyboard cable, and keyboard light cable are accessible.
8. Release the power button board cable (2) from the fan surface. (The power button board cable is attached to the fan surface with double-sided tape.)
9. Disconnect the power button board cable (3) from the system board.
10. Release the ZIF connector to which the keyboard light cable is attached, and then disconnect the
cable (4) from the system board.
11. Release the ZIF connector to which the keyboard cable is attached, and then disconnect the cable
(5) from the system board.
How to remove Keyboard
Before removing the keyboard, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer.
4. Remove the battery cover and battery
5. Remove the memory module/wireless module compartment cover
6. Remove the top cover
Remove the keyboard:
1. Turn the top cover upside down, with the front toward you.
2. Press on the back of the keyboard (1) through the opening in the top cover until the keyboard disengages from the top cover.
3. Release the keyboard light cable (2) and the keyboard cable (3) through their respective openings in the top cover.
4. Turn the top cover and keyboard right-side up, with the front toward you.
5. Swing the rear edge of the keyboard (1) up and forward until it rests at an angle.
6. Slide the keyboard (2) back at an angle until the tabs on the front edge of keyboard disengage from the slots in the top cover.

Wednesday, March 30, 2016

How to disassemble Lenovo tablet - Lenovo YOGA Tablet 2-1371F - How to test the charger – How to remove the battery – How to remove the cover – Tablet repair and service









Category: Tablet Repair and Service 

Contents of this article 

  • How to test the changer voltage 
  • How to remove the cover 
  • how to remove the battery 

Lenovo YOGA Tablet 2-1371F

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.
Pull down 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 
How to remove Rear cover
1. Push the button to unlock the hinge frame.
2. Open the hinge frame.
3. Open the card slot cover using a thin flat blade or guitar pick.
4. Remove screws 1 on the rear cover as shown in the figure below.
5. Separate the bottom right corner of the rear cover from the main body of the tablet using a suction tool as shown in the figure below.
6. Hold the tablet in one hand and use a guitar pick to unlock the rear cover from the tablet along the joint line as shown in the figure below.
7. Slowly remove the rear cover.
How to remove Battery pack
1. Remove screws 1 on the metal piece for fixing the battery FPC as shown in the figure below.
2. Remove the metal piece using a pair of pointed tweezers.
3. Disconnect the power supply to the tablet by detaching the battery FPC from its connectors on the main board using a pair of tweezers.
4. Remove the HDMI and audio jack FPC FRU.
5. Remove the right speaker FRU.
6. Remove the HDMI and audio jack FPC holder, by lifting the holder, and at the same time pushing the holder in the direction using a pair of tweezers as shown in the figure below
7. Place the hinge frame in the closed position as shown in the figure below.
8. Slowly pull out the hinge pivot on the left side of the battery pack using a pair of tweezers.
9. Detach the connector of the USB and power key FPC from the main board using a pair of tweezers.
10. Remove the USB FPC holder, by lifting the USB FPC holder using a pair of tweezers, and at the same time pushing the USB FPC holder in the direction shown in the figure below.
11. Slowly pull out the hinge pivot on the right side of the battery pack using a
pair of tweezers.
12. Remove the hinge frame from the main body of the tablet as shown in the figure below.
13. Peel off the foil on the battery cover at the side of the hinge frame with battery FPC.
14. Remove screw 1 on the battery cover as shown in the figure below.
15. Peel off the foil on the battery cover at the side of the hinge frame without battery FPC.
16. Remove screw 1 on the battery cover as shown in the figure below.
17. Remove the battery cover at the side of the hinge frame without battery FPC as shown in the figure below.
18. Push out the battery pack from the hinge frame from the side of the hinge frame without battery FPC.
19. Remove the battery pack from the hinge frame.