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DISMANTLING
AND
REASSEMBLY
Introduction
4
Instructions
for
dismantling
or
reassembling
the
counter are
limited
to
those areas
where
special
care
is
required
or difficulty
may
be experienced.
REMOVAL
OF
COVERS
WARNING:
DANGEROUS AC VOLTAGES
ARE EXPOSED
WHEN
THE
COVERS
ARE
REMOVED
WITH
THE
INSTRUMENT
CONNECTED
TO AN
AC
SUPPLY.
TURN
THE
INSTRUMENT
OFF
AND
DISCONNECT THE SUPPLY PLUG
FROM
THE
REAR
PANEL
PRIOR
TO
ANY
DISMANTLING
OR
REASSEMBLY.
Instrument Covers
5
Complete
the following procedure:
'i
(1)
Disconnect
the
AC
power
cord from
the
rear
panel.
(2)
Unscrew
the
two
phillips
head screws from each
rear corner-foot.
(3)
Slide
the
top cover
1/2.
inch
towards
the rear panel
and
lift
off.
The bottom
cover
slides
off
in
the
same
manner.
6
To
replace
the covers,
reverse
the
above procedure.
Ensure
that the
tongues
of the
covers
fit
under the edges
of
the
frame
on the
front
panel
Front Panel
7
Complete
the
following procedure:
(1)
Remove
the
instrument
covers.
(2)
Remove
the side
panels by
sliding
toward
rear
of
instrument.
(3)
Turning counterclockwise,
remove
the
clamping
collars
from
the
front-panel
BNC
connectors
for
INPUTS A
and
B.
Use
the special
wrench (Racal-Dana
P/N
14-1586).
(4)
Remove
the
two
screws
securing the handles
to the side
frame
at
both
sides of
the counter.
(5)
Remove
the
two
screws
securing the front panel
to side
frame which
are
exposed by
removing
the
handles.
(6)
Ease
the front
panel forward.
(7)
To
completely disconnect
the
front
panel,
unplug
PL1
and
PL2 from
the
motherboard.
6-3
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