Introduction
If you are unable to hear anything during hands free calling the internal speaker may need to be replaced. This guide will teach you how to disassemble your AT&T CL4940 corded answering system and replace the speaker used for hands free calling. This is a fairly simple process and can be accomplished with minimal technical expertise.
What you need
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Remove phone line and power cord from the back cover of the device.
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Remove phone cable from the side of the device.
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Starting from the bottom of the device, using a metal spudger, separate the top (white) plastic piece from the bottom (gray) plastic piece.
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Work your way across the bottom of the device, then to each side, and finally to the top.
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The top and bottom pieces should separate, and the internals of the device will now be accessible.
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Using wire cutters, sever both the red and black wires connected to the microphone.
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To remove the microphone from the device, gently wiggle it while pulling.
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