Introduction

If one or multiple keys stop functioning, the keypad circuit board is probably defective. Replacing this part requires little to no technical knowledge. Simply follow the steps below to replace the keypad circuit board.

Pièces

Aucune pièce nécessaire.

Be sure phone is powered off before removing the battery. Push the tab located at the bottom of the battery towards the top of the phone. Lift the battery away from the phone.
  • Be sure phone is powered off before removing the battery.

  • Push the tab located at the bottom of the battery towards the top of the phone.

  • Lift the battery away from the phone.

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Grasp the antenna between two fingers and turn it counterclockwise until it is unscrewed. Pull the antenna straight out of the phone. Pull the antenna straight out of the phone.
  • Grasp the antenna between two fingers and turn it counterclockwise until it is unscrewed.

  • Pull the antenna straight out of the phone.

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Pry off the bottom piece using the spudger. There are notches on the edge of this piece that can be used to aid prying. There are notches on the edge of this piece that can be used to aid prying.
  • Pry off the bottom piece using the spudger.

  • There are notches on the edge of this piece that can be used to aid prying.

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Remove the sticker overlaying the NEXTEL logo.
  • Remove the sticker overlaying the NEXTEL logo.

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Using a Torx T8 screwdriver, remove the two screws exposed after removing the sticker by unscrewing counterclockwise.
  • Using a Torx T8 screwdriver, remove the two screws exposed after removing the sticker by unscrewing counterclockwise.

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Starting from the bottom and working towards the top, use a spudger to pry the back cover off the phone. Starting from the bottom and working towards the top, use a spudger to pry the back cover off the phone. Starting from the bottom and working towards the top, use a spudger to pry the back cover off the phone.
  • Starting from the bottom and working towards the top, use a spudger to pry the back cover off the phone.

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Using a Torx T8 screwdriver, remove the two circled screws by unscrewing counterclockwise.
  • Using a Torx T8 screwdriver, remove the two circled screws by unscrewing counterclockwise.

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Using a pair of tweezers, firmly grasp the connector at the top of the phone and pull the connector straight away from the phone. Do not pull the connector off by the wire.  This could damage or destroy the wire or connector. Do not pull the connector off by the wire.  This could damage or destroy the wire or connector.
  • Using a pair of tweezers, firmly grasp the connector at the top of the phone and pull the connector straight away from the phone.

  • Do not pull the connector off by the wire. This could damage or destroy the wire or connector.

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Unclip the ribbon cable, located underneath the motherboard, by using the spudger to push up on the dark brown part of the connector located on the circuit board. Do not pull the motherboard too far away from the phone with the ribbon cable still connected.  this will damage the cable or the motherboard.
  • Unclip the ribbon cable, located underneath the motherboard, by using the spudger to push up on the dark brown part of the connector located on the circuit board.

  • Do not pull the motherboard too far away from the phone with the ribbon cable still connected. this will damage the cable or the motherboard.

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Remove the motherboard by firmly grasping the edges of the circuit board with one hand and the phone with the other and pulling up on the motherboard slightly and then pulling it straight down toward the bottom of the phone. Be sure to pull straight down to disconnect the ribbon cable properly.  Pulling in another direction may cause damage to the cable or the motherboard.
  • Remove the motherboard by firmly grasping the edges of the circuit board with one hand and the phone with the other and pulling up on the motherboard slightly and then pulling it straight down toward the bottom of the phone.

  • Be sure to pull straight down to disconnect the ribbon cable properly. Pulling in another direction may cause damage to the cable or the motherboard.

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Flip the motherboard over 180 degrees. Place a spudger in between the gold plate and the bottom of the circuit board. Carefully use the spudger as a prying tool to lift the circuit board from the motherboard.
  • Flip the motherboard over 180 degrees.

  • Place a spudger in between the gold plate and the bottom of the circuit board.

  • Carefully use the spudger as a prying tool to lift the circuit board from the motherboard.

  • Be very careful not to insert the spudger too far or to apply too much pressure. It can easily damage the circuit board.

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Conclusion

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

Austin Lake

Membre depuis le 18/10/2013

501 Réputation

5 tutoriels rédigés

Équipe

Clemson, Team 13-3, Benson Fall 2013 Membre de l'équipe Clemson, Team 13-3, Benson Fall 2013

CLEM-BENSON-F13S13G3

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9 tutoriels rédigés

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