Grass Valley SMS-6000 Series - Manual (Page 113)

5-9
Alignment
3RU Frame
The fan is located at the rear of the frame above the AC power inlets.
Cleaning the Filter
The filter is accessible from the rear. Turn the catch on the plastic cover a
quarter turn, pull it off and remove the filter. Clean the filter by shaking it
to remove the dust or by washing it in warm water if necessary. Once it is
clean and dry replace the filter in the cover and into the frame.
Replacing the Fan
WARNING
This requires the frame to be removed from the equipment rack and the top
cover removed. This should be undertaken only by a qualified technician.
Uncable the frame and remove it to a work bench. Remove the top cover.
Unplug the modules and store them safely in an anti-static environment.
Remove the rear motherboard assembly. First remove the two screws at the
rear of each side of the frame. It is not necessary to touch those in the base
of the frame.
Ease the motherboard assembly back to allow access to the cables. Detach
the cables noting carefully their positions, especially the AC power inlet
terminals.
Lift the motherboard assembly free from the frame and lay it on a bench.
Remove the four screws holding the fan to the inner motherboard. It is
strongly recommended
that you do not separate the inner and outer
motherboards as re-assembly is difficult.
Replace the fan with one of similar rating.
To install the fan into the frame follow the above sequence in reverse.
WARNING
Take great care that the AC power inlet terminals are connected to the correct
terminals.