Maintenance-213 Service
The
location
of
parts
that
are called
out
in
the
replacement
procedures are
found
either
on
the
Exploded
View
drawing
in
the
Mechanical Parts
List
section
or
on
accompanying
disassembly figures.
I
WARNING
I
Potentially dangerous high voltages exist inside
this instrument when
it
is operating. Disconnect
the instrument from the power line and turn it
off
(disconnecting the instrument from the power
line does not turn
it
off) before removing the
cabinet halves.
NOTE
In
steps involving removal
of
circuit boards,
extreme care
is
necessary to prevent the bending
or breaking
of
terminal pins. Boards
must
be
removed vertically in the same plane
as
they
are
set
in
the instrument. Do
not
twist or
move boards
in
a shearing direction (left, right,
away from, or toward viewer).
TOOLS REOUI RED. The
following
tools
are required
for
component
removal and replacement:
Screwdriver, Phillips,
3",
#1
point
Screwdriver,
4",
3/16"
blade
Nutdriver
(or
socket),
3/16"
1480-16
SCREWS
SECURING
CABINET
HALVES
2 SCREWS ON
RIGHT
SIDE
ARE
INSIDE
PROBE
STORAGE
WELL
Figure
4-3.
Location
of
screw securing cabinet halves.
4-4
Pliers, long nose
Soldering
Iron,
15
watt
Soldering
Iron,
35
-
40
watt
Integrated
Circuit
Extractor
1
(Tektronix
Pa
rt
No.
003
-
0619
-00)
Kit,
Circuit
Board Pin
1
(Tektronix
Part No.
040-0542-00)
Desolder
Tool
1
(Tektronix
Part No.
003-0652-00)
Solder
Wick
1
(Tektronix
Part No.
006-1356-00)
CABINET
REMOVAL.
Removal
of
the
cabinet
is
required
to
replace
the
power
line fuse
or
the
mA
input
protection
fuse, and
to
perform
calibration
or
troubleshooting.
Proceed
as
follows:
1.
Unwind
the
probe lead and then
the
power
cord.
Turn
the
instrument
upside
down
on its
top
and remove
the
four
screws
holding
the cabinet together
(see
Figure 4-3).
Two
of
the screws are located inside the probe storage slot.
NOTE
The instrument
is
not
secured to either cabinet
half
except
by
a tight fit around the crt face plate;
therefore,
if
the instrument remains attached to
1
Optional tools.
POWER CORD
PROBE
LEAD
1481-34
Figure
4-4.
Power cord and probe lead routing.
@
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