Telex AUDIOCOM BP-2002 - Manual (Page 4)

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Figure 1. BP-2002 & BP-1002 Connections and Controls
APPENDIX A
OPTIONAL FOOTBALL MODIFICATIONS
GENERAL DESCRIPTION
In Audiocom
® Intercom Systems, the Mic-Kill feature is used to turn off any activated
microphones on a selected channel. The Mic-Kill feature is activated when the beltpack
receives a 24 kHz signal from the channel. In some applications the Mic-Kill and Call
signal features are not desired and need to be disabled.
ELIMINATING MIC-KILL AND CALL SIGNAL
CAUTION
TO PREVENT DAMAGE TO THE EQUIPMENT, THESE MODIFICATIONS SHOULD ONLY
BE MADE BY QUALIFIED TECHNICIANS.
If desired, the Mic-Kill and Call signal features can be disabled in the BP-2002/BP-1002 by
removing a surface-mounted capacitor from the printed circuit board. Perform the following:
1. Before making changes to the printed circuit board,
disconnect all power and line connections from the beltpack.
2. Refer to Figure 3 and locate C61 on the underside of
the printed circuit board.
3. Remove capacitor C61 from the printed circuit board.
RESTORING MIC-KILL AND CALL SIGNAL
To restore the Mic-Kill and Call signal features, replace C61 with Telex ® part number
102881-140, 1500 pF, 50V capacitor.