mc²36 MKII Installation & Service Guide
Version: 1.0/1
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5. Service Procedures
5.8
Replacing a Console Power Supply
The control surface is powered by dual-redundant power supplies which are fitted inside the frame behind the
Central GUI TFT display and Overbridge:
The two supplies come as a complete "PSU block" which can be replaced in its entirety - i.e. it is not possible to
replace an individual supply.
All of the standard frame sizes are powered from a single PSU block (fitted to the central bay).
To replace the PSU block you will need to remove the Central GUI display and Overbridge blanking panel.
1.
Turn off the power to the control surface by
ALL
MAINS
connectors - press the red button
on the IEC connector to release the plug.
You must remove the
MAINS
connectors from the frame, rather than from the wall, as the IEC sockets form
part of the PSU module. If you do not, then the PSU module will get stuck during step 8.
2.
In the central bay, remove the TFT display as described
3.
Then remove the Overbridge blanking panel to the right of the display.
You will see the PSU block mounted at the rear of the frame.
4.
Using a T20 Torx driver, disconnect the PSU block from its distribution board by loosening the 8 screws
shown in blue below.
5.
Remove the grounding cable by loosening its screw.
6.
Using a small pair of pliers, remove the two signal connectors (which go to the GateServer):
Note that you will need to carefully pinch the signal connector, using your pliers, to remove it from the PSU:
Steps 4, 5 and 6 allow the PSU block to be removed with all of its cables (power, grounding and signal).
Do
NOT
disconnect any wires other than those shown.
