Philips PM 3266 Instruction Manual page 169

176
3.5.
1.3.
Dismantling
Dismantling the probe
(see
Fig.
3.37.)
The
front part
1 1
of the probe
can be screwed from
the
rear part
1
3.
Item
1 1
can then be
slid
from
1
2
and
1
3.
The
RC
combination 12
is
soldered to
13.
For replacement
of 12
refer to section
3. 5.1. 4.
Dismantling the
compensation box
(see
Fig. 3.37.).
Unscrew
the ribbed
collar
of the compensation box
to the
cable.
The
case
14 can then
be
slid
of the
compensation box
sideways.
The
electrical
components on
the printed-wiring board
are
then
accessible.
Fig.
3.37.
Dismantling.
3.5. 1.4.
Replacing
parts
Assembling
the
probe
A
new RC
network
is
slid
over the cable nipple
after
which
the cable core
is
soldered
on
to
the
resistor wire.
When
the
measuring probe
is
assembled, the
RC
network must
be
at
dead
centre
in
the
probe
tip.
Replacing
the cable
assembly
Dismantle the compensation box
as
described
in
section
3.5.1
.3.
Unsolder the
connection between
the
inner
conductor and the printed-wiring board. Keep
the
frame
of the
compensation box
steady and loosen the cable nipple with
a
5
mm
spanner on
the hexagonal
part.
Replace
the cable
and
fit
it
working
in
the
reverse order.
Replacing the
BNC
Dismantle the
compensation box
as
described
in
section
3.5.1 .3
Unsolder the connection
to the printed-wiring board.
Keep
the
frame
of the
compensation box
steady and
loosen the
BNC
with
a
3/8 inch spanner. Replace the
BNC
and
fit
it
working
in
the
reverse order.
Replacing the
probe
tip
The damaged
tip
can be
pulled out
by means
of
a
pair of
pliers.
A
new
tip
must
be firmly pushed
in.