Wheatstone Corporation AUDIOARTS ENGINEERING DMX Series, Руководство пользователя

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serviced. The button settings are maintained when the DMX Surface is
powered down and the Mix Engine will continue to deliver audio. When the
Surface is powered up after a replacement control panel is plugged in, all
fader positions will update. So, if the console is active, you must make
sure the new control panel faders are set to similar positions as on the
replaced panel, otherwise there could be large changes in volume when
the new control panel powers up.
The board operator headphone jack can also be replaced in the field. It
screws into a threaded hole in the lower chassis. The control panel must
be removed to access the headphone jack. Use an adjustable wrench to
turn the square plastic jack housing to loosen it then hand unscrew the
jack. Be sure to use shrink tubing over the solder joints on the new jack.
The headphone cable plugs into a keyed 3-terminal Phoenix connector
(HDPN) on the network interface board so it can be unplugged when
removing and installing a new jack onto the cable.
Tools Required
A standard #1 Phillips screwdriver is used to remove and replace the
three screws holding the rear cover panel on the meter bridge. The hex
head screws, which fasten the control surface, require a 1/16
” hex driver .
A very small flat blade screwdriver (like a “ G reenie”) is needed to adjust
the mic gain trim pots or to flip the phantom power switches on the mic
preamps.
If you are making up your own audio cables, an RJ45 crimper is required
(and lots of RJ45 plugs). Having a Category cable checker with remote test
plug, so that already run cables can be easily checked in situ, is also a
must.
Mix Engine Status lights
If the red ERROR LED lights up on the front of the Mix Engine, it
indicates a fault in the Mix Engine ’s operation. Although audio may still be
passing through the Mix Engine and there may be no outward sign of
trouble, the error indicator is saying otherwise.
To clear the fault, try rebooting the Engine using Navigator (right-click
on the Mix Engine icon in the System Dock and select Reboot Blade ). If the
Mix Engine reboots and the Error LED turns off, then the issue was
resolved.
If the Mix Engine reboots and there is no change to the Error LED, the
Mix Engine will have to be power cycled. This will cut off all audio through
the device so it will have to be bypassed before power cycling it. Unplug its
AC cord and wait a minimum of ten seconds, to ensure power is fully
removed from all internal circuits, before plugging the AC cord back in.
The Ethernet connectors for network connection have two integral green
LEDs. Both blink to indicate Gigabit operation. If only one is blinking, then
that connection is working at Megabit speeds. This is OK for the DMX
Surface and for an admin PC which only has only one or two stereo signals
going over its Ethernet connections.
Swapping the Control Panel
The Surface ’s control panel can be swapped while the console is on-air
since audio flows through the Mix Engine not the Surface. Of course, you
have no control over the audio while the Surface is off line, but it should
take less than five minutes to swap the control panel.
To swap the DMX Surface control panel:
1. Unplug the DC power to the Surface. This can be done by unplugging
the DC connector on the network interface board (see Figure 2-2 on
page 11) or, on a DMX-8 Surface, by unplugging its DC cable at the
Mix Engine. On a DMX-16 Surface, unplug the AC cord on its power
supply.
2. Use a 1/16” hex driver to remove the hex screws from around the
Control Panel (12 on a DMX-8, 18 on a DMX-16).
3. Lift up the front edge of the control panel to unplug the keyed ribbon
cable(s) that connect the control panel to the network interface
board. There is one cable on a DMX-8, two cables on a DMX-16.
4. If the control panel is being replaced “hot” make sure the faders on
the replacement control panel are set to the same positions as on
the original control panel. This is not important if the console is
taken off-air, the faders can be set to full off.
5. Set the replacement control panel onto the rear support rail and plug
in the keyed ribbon cable or cables.
6. Set the control panel into place on the chassis and fasten it to the
chassis using the hex screws removed in step 2.
7. Plug in the DC cable to power up the Surface.
The new control panel will take about a minute to boot up. The same
audio sources, assignment button settings, and monitor settings as the
original panel will appear on the replacement panel. If the faders were set
as on the original panel, and the DMX console has continued playing on
air, there will be momentary audio level changes as the new Surface takes
control (especially if EQ or Dynamics are active since there will be a couple
seconds where the audio switches to flat then switches back to the EQ and
Dynamics settings for any channel that is live).