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hlaintvnanet—
TM
5006
4.
Tektronix
part
number.
Soldbring
Technique*
To avoid
alactrlc
shock
hazard,
diaconnact
tha
inairumant
from
tha
powar
sourca
bafora
aoidaring.
The
reliability
and accuracy
o( thia
instrument
can be
maintained only
if
proper
soldering
techniques
are
used
when
repairing or replacing
parts.
General
solderirtg
techniques
which
apply to
maintenance
of
any
precision
electronic
equipment should be used
when
working on
this
instrument.
Use
only 60/40
rosirvcore. electronic
grade
solder.
The
choice
of
soldering
iron
is
determined
by
the
repair to
be made.
When
soldering
on
circuit
boards
or small wiring,
use
only a 15
watt,
pencil
type
soldering
Iron.
A
higher wattage
soldering
iron
can cause the etched
circuit
wiring
to
separate
from
the
board base
material
and
melt the
insulation
from
small wiring.
Always keep
the soldering
iron
tip
properly tinned to
ensure
the
best heat transfer to
the solder
joint.
Apply
only
enough
heat to
remove
the
component
or
to
make
a
good
solder
joint.
To
protect heat
sensitive
components,
hold the
component
lead with a
pair of
long-nose
pliers
between
the
component body and
the solder
joint.
Use
a
solder
removing
wick
to
remove
excess
solder
from connectioru
or to clean
circuit
board
pads.
Semiconductors
To
remove
In-line
integrated
circuits
use an
extracting
tool.
This
tool
is
available
from
Tektronix,
Inc.;
order
Tektronix
Part
No. 003*0619-00.
If
an
extracting tool
is
not
available,
use
care
to avoid
damaging
the
pins. Pull
slowly
and
evenly
on
both
ends
of
the integrated
circuit.
Try
to
avoid disengaging
or>e
end
before the other end.
Multipin
Connectors
The
pin
connectors used
to
connect
the wires
to
the
Interconrtecting pins
are
clamped
to
the
ends
of
the
wires.
To
replace
damaged
multl-pin
connectors,
remove
the old
pin
connector from
the holder.
Do
this
by
inserting
a
scribe betvreen the
connector
and
the holder
and
prying
the connector
from
the
holder.
Clamp
the
replacement
conrwctor
to
the
wire. Reinstall
the
connector
in
the
holder.
If
the
individual
end
lead pin
connectors
are
removed
from
the
plastic
holder,
note the order
of
the
individual
wires
for
correct
replacement
in
the
holder.
For proper
replacement see Rg.
5*3.
Rg.
S-S.
OrtantiUon
and djaaanmbly
ct
muRlptn
connector.
Instrumanl
Disassembly
I
Uaa
caution
whan
oparating
this
instrumant
nvith
tha
aida
panals
removed
as
dangarous
voltagaa are
prasant.
To
remove
the
top,
bottom and
side panels,
removethe
four
screws
attaching the
feet
to the
rear
of
the
I
nstrument
and
slide
the panels
to
the
rear.
See
Rg.
5*4.
To
removethe
Interface
circuit
board,
remove
the
plug-in
guide
rails
and
air
baffles
shown
in
Rg.
5-5.
Next
remove
the
interface
circuit
board support by removing
the
screws
shown
in
Rg.
5*6
and
Rg.
5-10.
Before
removing
the
main
interface
circuit
board,
make
certain the conrtectlons to the
board
are
either
unplugged
or unsoldered.
Remove
the
six
screws holding
the board to the mainframe.
See
Fig.
^7.
To
remove
the
rear panel,
removethe
screws
shown
in Fig.
5-6.
After
these screws
are
removed,
the
rear
panel
may
be
laid
back
for easier
access
to the
dc power
supply
board.
After
removing
the
rear panel,
the
dc power
supply
circuit
board
may
be removed.
Remove
the
seven screws
shown
in
Rg.
5-9.
EEiiD
Dangerous
voltagaa
may
ba
praaeni
on
tha
filler
capacffors
on
tha
dc
powar
supply board
lor
several
minutes
after Hr^a
voltage removal.
5*3
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