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Power Button
This turns the main power to the MPS-1
on or o. It is a main power button, but it
is not required to turn this on and o each
time the MPS-1 is used. When enabled, the
AUTO ON/OFF MODE will automatically
switch the amplier on when an audio
signal comes from a source or control
unit (such as a preamplier). The TRIGGER
MODE will turn the amplier on when an
external source (such as a preamplier)
provides a 5-24 VDC input on the trigger
terminals.
Panel Dim Selector Button
This button selects the overall brightness
of the lighting on the front panel of the
MPS-1. The button has four steps, each
consecutively after the other. The four
levels of brightness are:
• High
• Medium
• Low
• OFF
Pressing the PANEL DIM button repeatedly
will scroll through each level of bright-
ness.
MPS-1 Front Panel Features
Amplier Channel Display
This multi-color LED display behind a tinted
acrylic panel shows activity of any of the
seven power modules on the MPS-1 doing
amplication duties.
BLUE LIGHT: Power Module is installed, on
and ready.
AMBER LIGHT (middle row): Power mod-
ule is installed and powered on but is in a
standby situation waiting for audio signal
or exernal trigger.
RED LIGHT: This indicates a fault condition.
A fault condition is one or more of the foll-
wing:
• Excessive Operating Temp
• Excessive Current (Short Circuit)
• DC on the Outputs
See the “Troubleshooting Section” for more
details on the display.
Note - When there is NO LIGHT - The power
module is not installed, the power module’s
fuse is blown, or connection between the
power module and the chassis is mis-
aligned.
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