Introduction

This guide will outline how to replace the Sony FDL-220R Watchman mono-speaker. Steps include a thorough disassembly of the Sony FDL-220R Watchman, and tools include a Phillips #00 Screwdriver, soldering station, and tweezers.

Knowledge of how to solder a basic through-hole contact is required.

Press down on the textured area and push toward the bottom of the device. Gently remove the battery cover.
  • Press down on the textured area and push toward the bottom of the device.

  • Gently remove the battery cover.

  • Remove the three AA batteries.

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Locate the five 5x11mm screws surrounding the battery compartment. Remove screws with a Phillips #00 screwdriver.
  • Locate the five 5x11mm screws surrounding the battery compartment.

  • Remove screws with a Phillips #00 screwdriver.

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Grasp the entire back half of the Watchman's casing. Snap off the casing from the bottom of the device.
  • Grasp the entire back half of the Watchman's casing.

  • Snap off the casing from the bottom of the device.

  • Gently pull off entire back casing.

  • Buttons may fall out upon opening casing. See the button replacement guide to fix buttons.

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Carefully grasp the entire circuit board. Pull the circuit board off of the device's plastic casing. Pull the circuit board off of the device's plastic casing.
  • Carefully grasp the entire circuit board.

  • Pull the circuit board off of the device's plastic casing.

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Locate the mono-speaker on the device. Locate the two through-hole contacts to the right of the speaker. Touch a soldering iron to the two through-hole contacts.
  • Locate the mono-speaker on the device.

  • Locate the two through-hole contacts to the right of the speaker.

  • Touch a soldering iron to the two through-hole contacts.

  • While the solder is hot, pull down on the wire with tweezers.

  • It may be helpful to remove excess solder with a solder wick or sucker.

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Conclusion

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

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Sam Putnam

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Baylor, Team 4-5, Williams Fall 2014 Membre de l'équipe Baylor, Team 4-5, Williams Fall 2014

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