Simplex 4100 - Audio Controller Board; Audio Controller Board Component Locations

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AUDIO CONTROLLER BOARD (562-894l(FIGURE 48)
If required, adjust the following potentiometers to obtain a reading of 500 mV RMS unless stated otherwise (turning
potentiometers clockwise increases outputs).
l R46 = Channel 1. Measure between P9-1 and P9-2.
l R93 = Channel 2. Measure between P8-1 and P8-2.
l R96 = Channel 3. Measure between P7-1 and P7-2.
l R80 = Phone Paging. Adjust to desired sound level. Not to exceed 350 mv RMS when measured between TP5
and TBl-3 while using telephone.
l R105 = Local Speaker. Adjust to desired sound level. R88 = Network Audio. Adjust to 350 mv RMS when a signal
is present at TB2 (measure between TP6 and TBl-3).
R105
R46 R96 R93
TBl R80
R88
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TP5 ‘
P7
T@6 TB2
Figure 48
Audio Controller Board Component Locations
82
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