Maintenance-7M13
2.
DIODES; A diode can be
ctlecked
for
an open
or shor18d condition
by measuring the resistance
between
_
m
i
n
al
s
.
With
a
n
ohmmeter scale
having
a
n
internal source
of
between
800
millivolts and
3
volts,
1he
resistance
should be very
hittl
in
one d
ire
ct
io
n
and
very
low
when
the leads
are
reversed.
�
Do
not use an
ohmmeter
scale that
ha
s
a h
ig
h
internal
c
urren
t
.
High
c
ur
re
n
t
s may damage the
diodes.
3.
RESISTORS.
Check resistors
with
an ohmmeter. Resistor tolerance
is
given
in
the Electrical
Parts
List.
R
es
istors
normally
do
not need
to be
replaced unless
the measured value varies
widely
f
r
o
m
1he
specified
vatue.
4.
CAPACITORS. A
le
a
ky
or
shorted
capac
i
t
o
r
can
be detec18d by
ctlecking
resistance
with
an
ohmmeter
on
the highest
scale. Use
an
ohmmeter
whictl
will
not exceed the
voltage
rating
of the
capacitor.
The resistance
reeding should
be high
after
initial
ctlarge
of
the capacitor.
An
open
capacitor
can
best
be
detected
with
a
capac
i
ta
n
ce
meter,
or by
chec
k
i
n
g
whether the
ca
p
ac
i
t
o
r
passes
AC signals.
REPLACEMENT
PARTS
Standard Parts
All electrical
a
n
d mechanical
part replacements
for
the
1M13
can
be obtained
through
y
o
u
r local
T
ektro
n
i
x Field Office or
representative. However,
many
of the
standard
e
lectr
o
n
i
c
components
can
be
obtained
locally in
less
time
than
is required
to
order
them
from
Tektronix,
Inc.
Before
pu
r
ch
as
i
n
g
or
ordering
replacement
perts,
ctleck
the parts lists
for
va
lu
e
,
tolerance,
rating,
and d
e
sc
rip
tion
.
NOTE
When selecting
replacement parts,
i
t
is im
p
orta
n
t to
remember that
the
physical size and shape
of
the
component
may
affect
its
pe
rf
o
rm
an
ce in the
instrument.
All
replacement parts should
be direct replacements unless
it is known that a different component will
n
ot adversely affect
the
instrument performance.
Special Parts
Some
parts
are
ma
n
u
factured
or
selected
by Tektronix to
satisfy
parti
cu
la
r
requirements,
or
are
manufactured
for
Tektronix
to our
specifications.
These
special
parts
are indicated in
the
parts list
by an
asterisk
preceding
the
part number. Most of
the
mech
a
n
i
ca
l
parts
used
in
this i
n
stru
m
en
t
have
been
m
a
n
ufactu
red
by Tektronix.
O
r
d
e
r all
special
parts directly
from
your
local Tektronix Field
Office
or
re
p
rese
n
ta
tive
.
Ordering
Parts
When
ordering replacement parts from
T
e
k
tr
onix,
Inc., refer
to
the
Parts Ordering Information and
Special Notes and Symbols on
the
page
im
m
ed
i
a
te
l
y
preceding
the
Electrical
P
a
r
t
s
List section.
Include
1he
fol
l
O
wi
n
g
i
n
f
o
rm
at
i
o
n
:
1.
Instrument
type
(7M13)
2.
Instrument
Serial Number
3.
A
description
of
the
part (if
e
l
ectri
ca
l
,
include 1I1e
circuit
number)
4.
Tektronix
Part
Number
3-3