Optional football modifications, General description, Eliminating mic-kill and call signal – Telex BP-1002 User Manual
Page 15: Restoring mic-kill and call signal
Operation 11
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 24kHz signal from the channel. In some application 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-2002/1002
by removing a surface mounted capacitor from the printed circuit board.
To remove the capacitor, do 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, 1500pF, 50V capacitor.