GAI-Tronics 12521-004 Microphone Assembly Replacement Kit for RED ALERT Emergency Telephones - Manual (Page 2)

Pub. 42003-240A
M ODEL 12521-004 M ICROPHONE A SSEMBLY R EPLACEMENT K IT Page: 2 of 3
f:\standard ioms - current release\42003 kit manuals\42003-240a.doc
05/11
3. Refer to Figure 1 and Figure 2 for the microphone locations for flush-mount and wall-mount
telephone, respectively. Remove the two screws holding the microphone assembly in place, and
retain them.
Figure 1. Microphone Location on
Flush-Mount Telephone
Figure 2. Microphone Location on
Wall-Mount Telephone
4. Unplug the microphone wire connector and make note of the location.
5. Pull the microphone assembly apart from both sides of the panel. If residual pieces of the gasket
material remain on the front panel, remove them.
Installing the New Microphone Assembly
Refer to Figure 3 and Figure 4 on page 3.
1. Apply the correct adhesive gasket to the back of the microphone shield, using the thicker gasket for a
flush-mount telephone, or the thinner gasket for a wall-mount telephone.
2. Install the microphone shield with gasket through the front panel.
3. Install the microphone assembly through the rear of the front panel.
4. Install the two self-tapping screws through the rear of the microphone assembly’s pressure plate to
secure. Cut the ties that keep the assembly together.
5. Plug in the wiring connector.
N OTE : Installation of a new microphone may require the volume level to be readjusted. In this case, see
the unit’s original installation manual for adjustment instructions.