Introduction

This guide will teach you to remove and replace the Logitech Harmony Smart Keyboard's Touchpad PCB.

The printed circuit board (PCB) mechanically assists and electrically connects electronic parts using conductive tracks, pads and other components. The PCB appears in the form of a thin, copper board.

Turn keyboard over to the  backside. Turn keyboard over to the  backside.
  • Turn keyboard over to the backside.

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Press and slide up on the upper battery latch, using both thumbs. Press and slide up on the upper battery latch, using both thumbs. Press and slide up on the upper battery latch, using both thumbs.
  • Press and slide up on the upper battery latch, using both thumbs.

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Remove the two AA batteries and set them aside.
  • Remove the two AA batteries and set them aside.

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Unscrew all five 4.0 mm screws, using Phillips #1 screwdriver. Unscrew all five 4.0 mm screws, using Phillips #1 screwdriver.
  • Unscrew all five 4.0 mm screws, using Phillips #1 screwdriver.

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Peel off the center sticker to reveal two hidden 4.0 mm screws. Unscrew these two screws with a Phillips #1 screwdriver.
  • Peel off the center sticker to reveal two hidden 4.0 mm screws.

  • Unscrew these two screws with a Phillips #1 screwdriver.

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Lift both top left and top right rubber stickers halfway, using the sharp end of the plastic spudger. Unscrew a total of two 4.0 mm screws, under the rubber stickers,  using a Phillips #1 screwdriver. Unscrew a total of two 4.0 mm screws, under the rubber stickers,  using a Phillips #1 screwdriver.
  • Lift both top left and top right rubber stickers halfway, using the sharp end of the plastic spudger.

  • Unscrew a total of two 4.0 mm screws, under the rubber stickers, using a Phillips #1 screwdriver.

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Unscrew the top center 4.0 mm screw, in the battery compartment, using the Phillips  #1 screwdriver. Now, you should have a total of ten 4.0 mm screws set aside.
  • Unscrew the top center 4.0 mm screw, in the battery compartment, using the Phillips #1 screwdriver.

  • Now, you should have a total of ten 4.0 mm screws set aside.

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Wedge the flat end of the spudger between the back panel and front panel. Slide the flat end of the spudger from right to left to pry the two panels apart. Slide the flat end of the spudger from right to left to pry the two panels apart.
  • Wedge the flat end of the spudger between the back panel and front panel.

  • Slide the flat end of the spudger from right to left to pry the two panels apart.

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Separate the back panel from the front panel completely, using both hands. A white ribbon flex cable will remain connected to both panels. Pull the panels apart slowly and gently, or the white ribbon flex cable may be unsafely removed.
  • Separate the back panel from the front panel completely, using both hands.

  • A white ribbon flex cable will remain connected to both panels.

  • Pull the panels apart slowly and gently, or the white ribbon flex cable may be unsafely removed.

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Lift up and pull off the track pad’s left and right clickers. Use caution while lifting, lift slowly with slight pressure. Use caution while lifting, lift slowly with slight pressure.
  • Lift up and pull off the track pad’s left and right clickers.

  • Use caution while lifting, lift slowly with slight pressure.

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Grip the lower end of the ribbon flex cable (white band) using your thumb and index finger. Then slide the strip out toward yourself in a scooping motion. Now, you should  have two completely separated panel pieces.
  • Grip the lower end of the ribbon flex cable (white band) using your thumb and index finger.

  • Then slide the strip out toward yourself in a scooping motion.

  • Now, you should have two completely separated panel pieces.

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Flip the front panel over so the front side faces up, and rotate so the keys appear upside down.
  • Flip the front panel over so the front side faces up, and rotate so the keys appear upside down.

  • Lift the upper-right corner of the sensor sticker using the sharp end of the spudger and your index finger.

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Peel the sticker off by pinching the sticker corner using your index finger and  thumb. Peel the sticker off by pinching the sticker corner using your index finger and  thumb. Peel the sticker off by pinching the sticker corner using your index finger and  thumb.
  • Peel the sticker off by pinching the sticker corner using your index finger and thumb.

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Rotate the front panel around so the keys appear right-side up. Wedge the flat-head metal spudger under the PCB's bottom-right corner.
  • Rotate the front panel around so the keys appear right-side up.

  • Wedge the flat-head metal spudger under the PCB's bottom-right corner.

  • Wedge and slide the spudger along the right side to reach the upper-right corner.

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Wedge the flat-head metal spudger under the PCB's bottom-left corner. Wedge and slide the spudger along the bottom side to reach the bottom-right corner. Wedge and slide the spudger along the bottom side to reach the bottom-right corner.
  • Wedge the flat-head metal spudger under the PCB's bottom-left corner.

  • Wedge and slide the spudger along the bottom side to reach the bottom-right corner.

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Slide and nudge the spudger upward underneath the PCB. Wiggle and lift up the PCB with your thumb as you nudge the spudger up to release the PCB. Wiggle and lift up the PCB with your thumb as you nudge the spudger up to release the PCB.
  • Slide and nudge the spudger upward underneath the PCB.

  • Wiggle and lift up the PCB with your thumb as you nudge the spudger up to release the PCB.

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Conclusion

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

Edwin Aguilar

Member since: 09/11/2017

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