Operating instructions
Maintenance-71380
4-16
Fig
.
4-11
.
Exploded
view
of
circuit-board
pin
and
ferrule
.
Fig
.
4-12
.
Front-panel
light
socket
assembly
.
To
replace a
damaged
pin
which
is
mountedon
a
single-
layer
circuit
board,
first
disconnect
any
pin
connectors
.
Then
(using
Soldering
Techniques
given
earlier
in
this
section),
unsolder
the
damaged
pin
and
pull
it
from
the
board
with
a
pair
of
pliers,
leaving
the
ferrule
(see
Figure
4-11)
in
the
hole,
if
possible
.
If
the
ferrule
remains
in
the
circuit
board,
remove
the spare
ferrule
from
the
replace-
ment
pin
and
press
the
new
pin
into
the
hole
in
the
circuit
board
.
If
the
ferrule
is
removed
with
the
damaged
pin,
clean
out
the
hole
using
a
solder-removing
wick
and
a
scribe
.
Then,
press
the
replacement
pin
with
attached
spare
ferrule
into
the
hole
.
Position the
replacement
pin
in
the
same
manner
as
the
damaged
pin
.
Solder
the
pin
to the
circuit
board
on
each
side
of
the
board
.
If
the old pin
was
bent
at
an angle to
mate
with
a
connector,
carefully
bend
the
new
pin to
the
same
angle
.
Replace
the pin
connector
.
Front-Panel
Lights
This
instrument
uses
LED's
(light-emitting
diodes)
and
in-
candescent
lamps
for
front-panel
lights
.
LED's
are
used
to
illuminate the
TRIG'D
and
SINGLE
SWP
READY
lights
.
To
replace
LED's,
remove
the
cap
from
the
sleeve
as
in
Figure
4-12
.
Note
lead
wire color cod-
ing
and
LED
lead
configuration
.
Unsolder
wire
leads
and
remove
LED
from
the
cap
.
Solder
the
replacement
LED
and
lead
wires to
the
socket
cap
as
noted
previously
.
In-
stall
the
cap
in
the
sleeve
.
Incandescent
lamps
are
used
to
illuminate
the
transparent
push-button
switches
.
To
replace
incandescent
lamps,
un-
solder the
lead
wires
from
the
rear
of
the
cap
(see
Figure
4-
12),
pull
the
cap
and
bulb
out
of
the
sleeve
.
Solder
the
replacement
lamp
and
lead
wires to
the cap
.
Install
the
assembly
in
the
sub-panel
sleeve
.
ADJUSTMENT
AFTER
REPAIR
After
any
electrical
component
has
been
replaced,
the
adjustment
of that
particular
circuit
should
be
checked,
as
well
as
other
closely
related
circuits
.
See
Section
5
for
a
complete
adjustment
procedure
.
INSTRUMENT
REPACKAGING
If
the
Tektronix
instrument
is
to be
shipped
to a
Tektronix
Service
Center
for
service
or
repair,
attach
a
tag
showing
:
owner
(with
address)
and
the
name
of an
individual
at
your
firm
that
can
be
contacted,
complete
instrument
serial
number
and
a description
of
the
service
required
.
Save
and
re-use
the
package
in
which
your
instrument
was
shipped
.
If
the
original
packaging
is
unfit
for
use or
not
available,
repackage
the
instrument
as
follows
:
1
.
Obtain
a
carton
of
corrugated
cardboard
having
inside
dimensions
of
no
less
than
six
inches
more
than
the
instrument
dimensions
;
this
will
allow
for
cushioning
.
The
shipping
carton
test
strength
for
this
instrument
is
200
I
bs
.
2
.
Surround
the
instrument
with polyethylene
sheeting
to
protect
the
finish
of the
instrument
.
3
.
Cushion
the
instrument
on
all
sides
by
tightly
packing
dunnage
or
urethane
foam
between
carton
and
instru-
ment,
allowing three inches
on
all
sides
.
4
.
Seal
carton
with
shipping tape
or
industrial
stapler
.
REV
.
A,
NOV
.
1976