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LT-6652 Rev 0

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Installation Instructions for Replacement 
MD-1244 Microphone

The kit consists of the following parts:

MD-1244: microphone circuit board with adhesive strips on flat side

wiring harness

You will also need the following tools:

Screwdriver or a utility knife

A multimeter probe

To install the microphone, you must perform the following steps:

A. Shut down the unit and disconnect power

B. Remove the old microphone

C. Attach MD-1244 to the door

D. Connect the wiring harness

Details on how to perform these steps are in the following pages.

A.

Shut down the unit and disconnect power

It is essential that you follow the proper shut down procedure.

To shut down the TX3 Touch Screen:

1.  At the Touch Screen terminal, enter 9999.

2.  Enter your administrator password, and then press 

OK

.

3. Select 

File > Shut down > Shut down

.

4.  After the TX3 Configurator and Windows have finished shutting down, disconnect power 

from the Touch Screen.

Summary of Contents for MD-1244

Page 1: ...hut down the unit and disconnect power B Remove the old microphone C Attach MD 1244 to the door D Connect the wiring harness Details on how to perform these steps are in the following pages A Shut down the unit and disconnect power It is essential that you follow the proper shut down procedure To shut down the TX3 Touch Screen 1 At the Touch Screen terminal enter 9999 2 Enter your administrator pa...

Page 2: ...the Touch Screen door 4 Disconnect the old microphone cable C Attach MD 1244 to the door The MD 1244 attaches to the inside of the Touch Screen door with double sided tape The microphone fits into an indentation in the door For ideal sound quality the microphone opening on the flat side of the MD 1244 see Figure 2 must align with the microphone opening on the door Figure 2 Location of the micropho...

Page 3: ...e MD 1244 The microphone on the other side of the opening is very delicate Permanent damage to the microphone can result if you force the tip of the multimeter probe too far into the microphone opening 5 Align the MD 1244 so that the terminal for the wiring harness is on the bottom see Figure 3 Figure 3 Proper alignment of the of the MD 1244 board 6 Using the multimeter probe as a guide move the M...

Page 4: ...pin connector on the wiring harness to the 4 pin terminal on the lobby controller board as shown in Figure 5 2 If there is a jumper on JW11 remove it see Figure 5 3 Reconnect power to the unit and then turn it on Figure 5 Microphone wiring on MD 1245 Speaker Connection White Microphone Connection Red Black Unused Unused JW11 open Sheild ...

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