Difficulty

Difficult

Steps

31

Time Required

                          45 minutes            

Sections

14

  • Back Panel
  • 2 steps
  • Battery
  • 3 steps
  • Fan
  • 4 steps
  • Speakers
  • 1 step
  • Hard Drive
  • 1 step
  • RAM
  • 2 steps
  • Heat Sink
  • 1 step
  • Video Cable
  • 1 step
  • Wi-Fi Card
  • 3 steps
  • Motherboard
  • 6 steps
  • Charging Port
  • 1 step
  • CMOS Battery
  • 2 steps
  • USB Port Board
  • 1 step
  • Keyboard
  • 3 steps

Flags

1

Step Trimmer

This guide has unnecessary steps. Trim them to be more concise!

  • BackLenovo IdeaPad S340-15IWL

  • Full Screen

  • Options

  • History

  • Save to Favorites

  • Download PDF

  • Edit

  • Translate

  • Get Shareable Link

  • Embed This Guide

  • Notify Me of Changes

  • Stop Notifications

Introduction

If your device is not registering keyboard clicks, the letters are not appearing on the screen, or your keys stick, it may indicate that your keyboard needs to be replaced or cleaned.

Make sure to consult the troubleshooting page before beginning the replacement as there is a chance that your keys may be obstructed, your drivers may be damaged, or the keyboard settings may have been changed.

Ensure that there is no food or liquids nearby while conducting the repair because your computer’s internal components will be exposed.

What you need

Step 1

              Back Panel               
  • Power off the laptop and place it face-down on a non-scratching surface.
  • Using a Torx T5 screwdriver head, remove all ten 6 mm screws holding the back panel in place.

Power off the laptop and place it face-down on a non-scratching surface.

Using a Torx T5 screwdriver head, remove all ten 6 mm screws holding the back panel in place.

1024

Step 2

  • Slide a plastic opening tool underneath the back case near the screen hinges.
  • Gently pry up on either side of the case.
  • You may hear popping sounds as you pry up the back case. This is normal. If the case does not open, try prying at a different angle/position.

Slide a plastic opening tool underneath the back case near the screen hinges.

Gently pry up on either side of the case.

You may hear popping sounds as you pry up the back case. This is normal. If the case does not open, try prying at a different angle/position.

Step 3

              Battery               
  • Remove the three 3 mm screws holding the battery in place using a Phillips #0 screwdriver.

Remove the three 3 mm screws holding the battery in place using a Phillips #0 screwdriver.

Step 4

  • Remove the white and blue bundled wire from the grooves on the right side of the battery.

Remove the white and blue bundled wire from the grooves on the right side of the battery.

Step 5

  • Disconnect the battery cable by gently pulling it straight out of the connector.
  • Be sure to pull parallel to the device to avoid bending the motherboard connector.
  • The battery connector does not lock and only requires light pressure to insert and remove.
  • Remove the battery from the laptop.

Disconnect the battery cable by gently pulling it straight out of the connector.

Be sure to pull parallel to the device to avoid bending the motherboard connector.

The battery connector does not lock and only requires light pressure to insert and remove.

Remove the battery from the laptop.

Step 6

              Fan               
  • Remove the two 3 mm screws connecting the fan to the casing using a Phillips #0 screwdriver.

Remove the two 3 mm screws connecting the fan to the casing using a Phillips #0 screwdriver.

Step 7

  • Using a spudger, gently disconnect the fan’s cable from the motherboard.

Using a spudger, gently disconnect the fan’s cable from the motherboard.

Step 8

  • Carefully unwind the black cable that runs between the top of the battery and the bottom of the fan from the grooves along the side of the fan.
  • In order to do so, you will need to pull up the metallic tape that holds the cable in place using either your fingers or a plastic prying tool to lift up the edge.
  • If you attempt to remove the device’s fan without removing the battery, the black cable may be wedged underneath the top of the battery. In this scenario, it is recommended that you at least loosen the screws holding the battery in place to allow for the cable to be removed with less resistance.

Carefully unwind the black cable that runs between the top of the battery and the bottom of the fan from the grooves along the side of the fan.

In order to do so, you will need to pull up the metallic tape that holds the cable in place using either your fingers or a plastic prying tool to lift up the edge.

If you attempt to remove the device’s fan without removing the battery, the black cable may be wedged underneath the top of the battery. In this scenario, it is recommended that you at least loosen the screws holding the battery in place to allow for the cable to be removed with less resistance.

Step 9

  • Carefully pick up the fan by the corners and detach the small connector wire by pulling parallel to the device.
  • Remove the fan from the laptop.

Carefully pick up the fan by the corners and detach the small connector wire by pulling parallel to the device.

Remove the fan from the laptop.

Step 10

              Speakers               
  • Unplug the wire connecting the speakers to the motherboard.
  • Remove the speakers from each side of the laptop.

Unplug the wire connecting the speakers to the motherboard.

Remove the speakers from each side of the laptop.

Step 11

              Hard Drive               
  • Remove the four 3 mm screws holding the hard drive expansion slot in place using a Phillips #0 screwdriver.

Remove the four 3 mm screws holding the hard drive expansion slot in place using a Phillips #0 screwdriver.

Step 12

              RAM               
  • Using the opening tool, gently pop off the metal cover for the RAM stick.

Using the opening tool, gently pop off the metal cover for the RAM stick.

Step 13

  • Using your thumbs, gently pull the two metal prongs that secure the RAM outwards.
  • The RAM will pop up at an angle.
  • Remove the RAM from the laptop.

Using your thumbs, gently pull the two metal prongs that secure the RAM outwards.

The RAM will pop up at an angle.

Remove the RAM from the laptop.

Step 14

              Heat Sink               
  • Remove the three 3 mm screws that secure the black heat sink near the top of the computer using a Phillips #0 screwdriver.
  • Lift the heat sink vertically to remove it from the laptop.

Remove the three 3 mm screws that secure the black heat sink near the top of the computer using a Phillips #0 screwdriver.

Lift the heat sink vertically to remove it from the laptop.

Step 15

              Video Cable               
  • Using an opening tool, carefully flip up the retaining flaps holding the silver video cable in place.
  • Slide the ribbon cable out of each connector.

Using an opening tool, carefully flip up the retaining flaps holding the silver video cable in place.

Slide the ribbon cable out of each connector.

Step 16

              Wi-Fi Card               
  • Pull up the black foam adhesive that covers the screw and connectors holding the Wi-Fi card in place.

Pull up the black foam adhesive that covers the screw and connectors holding the Wi-Fi card in place.

Step 17

  • Using an opening tool, lift up on the black and white coaxial cables on the Wi-Fi card and gently pull upward to unplug them.
  • When reconnecting the cables, be sure to match the colors to the arrows on the Wi-Fi card.

Using an opening tool, lift up on the black and white coaxial cables on the Wi-Fi card and gently pull upward to unplug them.

When reconnecting the cables, be sure to match the colors to the arrows on the Wi-Fi card.

Step 18

  • Remove the single 3 mm screw holding the Wi-Fi card in place using a Phillips #0 screwdriver.
  • Gently lift the Wi-Fi card out of the computer.

Remove the single 3 mm screw holding the Wi-Fi card in place using a Phillips #0 screwdriver.

Gently lift the Wi-Fi card out of the computer.

Step 19

              Motherboard               
  • Using an opening tool, flip up the retaining flap that holds the connector to the thin black ribbon cable at the bottom of the motherboard.
  • Gently remove the ribbon cable from its connector.
  • The cable is folded over and connected to itself with an adhesive. Be careful to only pull at the top fold of the cable.

Using an opening tool, flip up the retaining flap that holds the connector to the thin black ribbon cable at the bottom of the motherboard.

Gently remove the ribbon cable from its connector.

The cable is folded over and connected to itself with an adhesive. Be careful to only pull at the top fold of the cable.

Step 20

  • Remove the three total silver 6 mm screws from the hinges of the screen in the top corners of the device using a Phillips #0 screwdriver.

Remove the three total silver 6 mm screws from the hinges of the screen in the top corners of the device using a Phillips #0 screwdriver.

Step 21

  • Use an opening tool to flip up the hinges.
  • You may have to apply some force.

Use an opening tool to flip up the hinges.

You may have to apply some force.

Step 22

  • Remove the three 3 mm screws holding the motherboard in place using a Phillips #0 screwdriver.

Remove the three 3 mm screws holding the motherboard in place using a Phillips #0 screwdriver.

Step 23

  • Carefully unplug the black and red wires connected to the upper right corner of the motherboard.
  • These wires connect to the device’s charging port.

Carefully unplug the black and red wires connected to the upper right corner of the motherboard.

These wires connect to the device’s charging port.

Step 24

  • Carefully lift the motherboard from the base of the computer and remove it from the laptop.

Carefully lift the motherboard from the base of the computer and remove it from the laptop.

Step 25

              Charging Port               
  • Remove the charging port by pulling vertically at the base of the wires.

Remove the charging port by pulling vertically at the base of the wires.

Step 26

              CMOS Battery               
  • Remove the circular CMOS battery on the far left side of the computer by lifting it with your finger or an opening tool.
  • This is only attached with adhesive, so it does not require extensive force.

Remove the circular CMOS battery on the far left side of the computer by lifting it with your finger or an opening tool.

This is only attached with adhesive, so it does not require extensive force.

Step 27

  • Unplug the bundled red and black wires connecting the CMOS battery to the side of the device.
  • Remove the CMOS battery from the laptop.

Unplug the bundled red and black wires connecting the CMOS battery to the side of the device.

Remove the CMOS battery from the laptop.

Step 28

              USB Port Board               
  • Remove the silver 6 mm screw holding the USB and SD card slots in place in the upper left corner of the device using a Phillips #0 screwdriver.
  • Remove the black 3 mm screw holding the USB and SD card slots in place in the upper left corner of the device using a Phillips #0 screwdriver.
  • Use an opening tool to pry the port out of the device.

Remove the silver 6 mm screw holding the USB and SD card slots in place in the upper left corner of the device using a Phillips #0 screwdriver.

Remove the black 3 mm screw holding the USB and SD card slots in place in the upper left corner of the device using a Phillips #0 screwdriver.

Use an opening tool to pry the port out of the device.

Step 29

              Keyboard               
  • Pry up the metal plate covering the keyboard using an opening tool.
  • The keyboard will likely be held in place by a series of plastic pegs. These pegs are not designed to be removed, and must be broken or scraped off.
  • Do not worry about breaking these pegs, as they are not vital to the keyboard’s physical integrity.

Pry up the metal plate covering the keyboard using an opening tool.

The keyboard will likely be held in place by a series of plastic pegs. These pegs are not designed to be removed, and must be broken or scraped off.

Do not worry about breaking these pegs, as they are not vital to the keyboard’s physical integrity.

Step 30

  • Unthread the wide black plastic cable through the slot of the metal plate.

Unthread the wide black plastic cable through the slot of the metal plate.

Step 31

  • Gently push up on the keyboard from underneath the device to separate it from the plastic casing.
  • Remove the keyboard from the laptop.

Gently push up on the keyboard from underneath the device to separate it from the plastic casing.

Remove the keyboard from the laptop.

To reassemble your device, follow these instructions in reverse order.

Cancel: I did not complete this guide.

                                                                                      One other person completed this guide.                                             

Author

                                      with 3 other contributors 

                    Christine Robbins                     

Member since: 09/17/2021

459 Reputation

                                      4 Guides authored                  



                       Badges:
                       7







                                                        +4 more badges                           

Team

                       Western Carolina University, Team 1-3, Virtue Fall 2021                        

                                                  Member of Western Carolina University, Team 1-3, Virtue Fall 2021 



                    WCU-VIRTUE-F21S1G3                     


                                            4 Members                     


                                            5 Guides authored                     

sales - Jul 13, 2022

Reply

I would say that the best repair for a keyboard replacement on this laptop is to replace the entire top cover with the keyboard attached to the plastic pegs and top cover assembly.

I’ve done a lot of these for quite a few customers and they always come back complaining that the keyboard was bouncy after replacement.

Well, that would be because there are no screws to bolt the laptop to the chassis, and where the complete machined part assembly of the top cover can give you a perfect repair.

Sure its more expensive and more work, but it will help the customer out the most in the long run. If you’re doing this repair yourself, feel free to do the keyboard only, but if you’re doing it professionally for a client; Get a complete top cover assembly.

Nathan Low Foon - Aug 11, 2022

Reply

Hi

Does anyone have a link to purchase a reliable replacement parts for the keyboard/top cover?

@robbins451