Introduction

To complete this guide you will have to disassemble the handset and use a soldering iron to replace the circuit board. Other than the soldering process, the guide steps are medium in difficulty to complete. After completing this guide, users should have a fully operating, handset circuit board and screen.

Set the phone with dial keys facing downward.
  • Set the phone with dial keys facing downward.

Slide the battery cover toward the bottom of the phone. Lift and remove the back cover from the phone.
  • Slide the battery cover toward the bottom of the phone.

  • Lift and remove the back cover from the phone.

Remove the battery from its compartment.
  • Remove the battery from its compartment.

  • Pinch the end of cord where the battery is attached to the phone and pull up gently.

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Remove the two 9mm Phillips #1 screws in the battery compartment. Remove the two 9mm Phillips #1 screws in the battery compartment.
  • Remove the two 9mm Phillips #1 screws in the battery compartment.

Use the plastic opening tool to carefully separate the two halves of the case. Slowly work around the entire case to fully separate the halves before pulling them apart. Wires inside the case hold the two halves together, tearing these wires will lead to a need for additional repair.
  • Use the plastic opening tool to carefully separate the two halves of the case.

  • Slowly work around the entire case to fully separate the halves before pulling them apart.

  • Wires inside the case hold the two halves together, tearing these wires will lead to a need for additional repair.

Carefully remove the 9mm Phillips #1 screw from the top corner of the circuit board. Carefully remove the 9mm Phillips #1 screw from the top corner of the circuit board.
  • Carefully remove the 9mm Phillips #1 screw from the top corner of the circuit board.

Carefully grasp either side of the circuit board and lift it straight out of the front half of the case. Set the board in the lower half of the case.
  • Carefully grasp either side of the circuit board and lift it straight out of the front half of the case.

  • Set the board in the lower half of the case.

Set the circuit board on the table with the screen facing down.
  • Set the circuit board on the table with the screen facing down.

Using the desoldering braid and soldering iron, remove the solder around the cable for the speaker.
  • Using the desoldering braid and soldering iron, remove the solder around the cable for the speaker.

  • When installing the new board, use the soldering iron and solder to reattach the speaker cables.

Conclusion

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

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Penn State, Team 1-8, Kaschak Winter 2015 Member of Penn State, Team 1-8, Kaschak Winter 2015

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