ATT CL4940 Internal Speaker Replacement

Introduction

If the person you are speaking to through hands free calling is unable to hear you, the internal microphone may need to be replaced. This guide will teach you how to disassemble your AT&T CL4940 corded answering system and replace the microphone used for hands free calling. This is a fairly simple process and can be accomplished with minimal technical expertise.

What you need

Step 1 Internal Speaker

ATT CL4940 Internal Speaker Replacement, Internal Speaker: step 1, image 1 of 2

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Unplug your device before beginning disassembly.
Remove phone line and power cord from the back cover of the device.
Remove phone cable from the side of the device.

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Step 2

Remove the five 4mm X 10mm Phillips head screws from the back cover of the device.

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Step 3

ATT CL4940 Internal Speaker Replacement: step 3, image 3 of 3

Starting from the bottom of the device, use a metal spudger, separate the top (white) plastic piece from the bottom (gray) plastic piece.
Work your way across the bottom of the device, then to each side, and finally to the top.
There are brackets every few inches along the edge of the device. These may be difficult to pull apart.
The top and bottom pieces should separate, and the internals of the device will now be accessible.

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Step 4

Using wire cutters, sever both the red and black wires connected to the speaker.
Carefully remove the speaker from the assembly.
Be sure to remove the rubber gasket from the broken speaker. You will need this for reassembly.