Revision A • 6/06
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5-3
5 Service
Console Troubleshooting
There is a diagnostic test mode built into each
Dual Fader and Monitor panel that allows each
button, fader and rotary pot to be individually
tested to verify correct panel operation. It can only
be accessed when the panel is first powered by
either power cycling the console or by individu-
ally unplugging the panel’s red CAT-5 cable.
CONTROL TEST MODE
To enter the Control Test mode on a Dual Fader
panel, within three seconds of applying power to
the panel, press and release the left channel
Off
button. To exit the Control Test mode, press the
right channel
On
and
Off
buttons together.
To enter Control Test mode on a Monitor panel,
within three seconds of applying power, press and
release the Timer
Stop
button. To exit the Control
Test mode, press the Timer
Reset
and
Start
but-
tons together.
When the Control Test mode is active, pressing
any button will alternately light, then turn off, the
LEDs in that button.
To verify that each fader or rotary pot element
is good, the bus select button LEDs (on the Dual
Faders) or the monitor select button LEDs (on the
Monitor panel) are used to display the binary out-
put from an active fader or rotary pot while it is
moved from full off (most or all LEDs are off) to
full on (most or all LEDs will be on). The yellow
or red label above the active fader or pot is lit to
indicate the fader is being moved.
Control Panel Service
Each control panel consists of separate plastic
buttons sitting on a conductive plastic contact
sheet. These sit on the switchboard PCA, which is
fastened to the metal faceplate with a plastic in-
lay.
Control panels are not a field-serviceable assem-
bly, but they do have a limited number of field-
replaceable parts. All replaceable parts (10-char-
acter display and lens, rotary and fader knobs,
fader) are listed on page 5-2.
Dual Fader panels can be removed or installed
while the console is powered and on-air without
causing any audio interruption or noises in the
program audio. The new panel assumes the re-
moved panel’s button settings when plugged in.
Monitor Panel, Fader Test
These LEDs display the
binary output from the
fader or pot under test.
Typically, all light up when
the fader/pot is at full on,
and all are off when the
fader/pot is at full off.
The label directly above
the fader or pot lights to
indicate which fader or
pot is being moved.
Dual Fader Panel, Fader Test
These LEDs display the fader
output in binary code. Typically,
all are on when the fader is at
full on, and all are off when the
fader is at full off.
The red LED above the fader (B
or INC ALL) lights to indicate the
which fader is being tested.
