Philips pm3232 - Voltage Quintupler; Replacing a Switch of the Trigg Push-Button Unit

96
3.3.14.
VOLTAGE
QUINTUPLER
—
Remove the
rear cover (three
screws X,
Fig.
2.1.)
—
Remove
the E.H.T.
plug of
the
c.r.t.
and discharge
the connector and
c.r.t. immediately
by
shortening
them to
earth.
-
Unsolder
the
E.H.T. lead
at
point
P
on
the
supply
unit
(Fig. 3.10.)
—
Unsolder
the earth
wire of the quintupler
-
Slightly
squeeze the
quintupler flanges
Inside the cable
compartment together and pull the quintupler
out
3.3.15.
REPLACING
A
SWITCH OF
THE
TRIGG
PUSH-BUTTON
UNIT
—
Remove
the
time-base unit In accordance with section
3.3.8.
—
Straighten
the
4 retaining lugs of the relevant switch
as
shown
in Fig. 3.21.
—
Break the body
of the relevant switch
by
means of
a
pair
of
pliers and
remove
the pieces. The soldering
pins
are then
accessible.
—
Remove
the soldering pins
and
clean
the holes In the
printed-wiring board
(e.g.
with
a
suction soldering
Iron)
—
Solder
the new switch onto
the
printed-wiring
board
—
Bend
the
4
retaining lugs
back to
their
original positions
N.B.: The and
+
switch
are
not
soldered, so it Is sufficient
to
just
straighten the
4
retaining lugs
to remove
them.
Fig.
3.21.
Replacing
a push-button
switch