Datex-Ohmeda CAPNOMAC ULTIMA, Service Manual

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CAPNOMAC ULTIMA
TM
SERVICE MANUAL
6-2
6.2 Disassembly and reassembly
The CAPNOMAC ULTIMA
TM
is disassembled in the following
way (see Figure 9.1 for the exploded view of the monitor):
a )
Disconnect the power cord.
b )
Remove the upper two galvanized screws on the side panels
and lift off the top cover.
c )
Remove the lower two screws and detach the side panels.
Now the interior of the monitor is exposed.
CAUTION:
The special internal sample tube is mechanically
fragile. Sharp bends will cause leaks.
d )
Keyboard pc board with plastic key panel is attached
closely to the front plate.
e )
SpO
2
measuring board is attached to the front panel with
6 cm long bushing and cotter.
f )
Four boards are attached to the horizontally positioned
mother board in the center: (from f to r) PVX board, ACX
measuring board, CPU board, and video control board.
These boards are removed by pulling upwards.
Beneath the mother board the intermediary bottom plate
houses O
2
measuring unit, pump, some constriction
cassettes, and gas sampling system parts.
ASX agent identification unit is attached to the bottom
plate in upright position on the left side of the picture
tube.
g )
Power supply board is attached to the rear plate with five
screws.
h)
ACX photometer which holds preamplifier board,
transformer, power cord receptacle block, loudspeaker, fan
and dust filter, flow constriction cassette, fuse housing(s)
and sample gas out connector are all attached to the rear
panel with screws.
January 15th, 1997/6