Philips pm3232 - Dismanting the Instrument; Knobs; Bezel

91
3.3.
Dismantling
the
instrument
3.3.1.
WARNING
The
opening
of
parts of the
instrument or the
removal of covers is likely
to expose live conductors.
The
instrument
must, therefore, be
disconnected
from
all voltage
sources
before
any
opening of parts or
removal
of
covers
is started.
If
the
E.H.T.
connector
of
the c.r.t.
Is disconnected, both
connector and
c.r.t. must
be
discharged
Immediately
by
shortening
them
to
earth.
3.3.2.
KNOBS
3.3.2.1.
Knobs o/y
POSITION
potentiometers
R11 &
R12 and
AC-O-DC
switches SK16
&
SK19
These
knobs can be
pulled off the
shaft.
3.3.2.2.
Single
knobs (Fig.
3.15.)
—
Remove cap A
—
Slacken
screw
B
-
Pull
the
knob off
the shaft
3.3.2.3.
Double
knobs (Fig. 3.15.)
—
Remove cap A
—
Slacken
screw B
—
Pull the
inner knob
off
the
shaft
—
Slacken nut
C
—
Pull the
outer knob
off
the
shaft
Fig. 3. 15. Knobs
3.3.3.
BEZEL
-
Slightly lift the
lower part of
the
bezel and swivel
it upwards
-
Subsequently
mask, contrast
filter and
measuring
graticule can be removed