RADIOMETER TCM3 - Page 49

TCM3
and
TCM30
Service
Manual
2.
TCM3
Procedures, Continued
Analog PCB
(24)
Main PCB (28)
Power Supply
PCB and Rear
Plate (15) and
(19)
1002N2.1
Step Action
1
Unscrew
the
three
screws
securing
the
PCB
to
the
stand-offs
(25).
2.
Disconnect
the
two
power
supply
amphenol
connectors,
lift
the
on/off
.
switch
and
the
electrode
plug
from
their
grooves
and
turn
the
Analog
PCB.
3.
Remove
the
aluminium
screen
(26)
from
the
five
Main
PCB
stand-
offs
(27)
and
disconnect
the
flat-cable
connector
from
the
Main
PCB.
4.
Disconnect
the
on/off
switch
(16)
and
the
3-pole
display
cable.
Note
the
orientation
of
the
electrode
plug
in
the
slot
of
the
top
cover
and
the
on/off
switch
cable
on
the
side
near
the
Main
PCB.
Step Action 、
1.
Disconnect
the
flat-cable
connector
next
to
the
Display
PCB.
2.
Unscrew
the
four
stand-offs
and
the
two
screws
securing
the
PCB
and
screen to the cabinet.
3.
Separate
the
PCB
from
the
screen
by
removing
the
five
remaining
screws.
Step Action
1.
Disconnect
the
power
supply
cable
(17)
and
lift
the
PCB
and
the
rear
plate out of their grooves and then separate them.
2.
When
reassembling,
ensure
that
the
cables
are
not
clamped
and
that
the
connector
slot
(17)
is
directed
towards
the
rear
plate
edge.
Continued on next page