Tektronix 5440 Instruction Manual page 58

M
ai ntenance-5440
I
N D UCTO R S. Chec k for open
i
n ductors
b
y chec ki ng
initial c harge of th e capacitor. An open ca pacitor can best
co nti nuity with an ohmmeter . S h orted or p
artially shorted be d
etected with α capacitance meter or by ch ec king th at
ind u ctors ca n usually be found by ch ec k in g the waveform
the capacitor
p
asses ac signals .
response when h ig h -f requency sig nals are p
asse d
t
h roug h th e circ u it . Partial shorti ng often re
d
uces
h
ig h -
freque n cy response .
8.
R
epair an
d A
dj ustment. If any defective parts are
CA PACITORS . Α leaky or s h orte
d
ca pacitorcan usual- locate d , follow the re
p
lacement
p
roce dures give n
i
n
Ιγ be detected by chec ki ng resista n ce with an o h mmeter
Corrective
M
ainten ance .
B
e sure to chec k
t
h e perfor-
οη th e h
ig hest scale . Do
n
ot exceed the voltage rating of ma nce of any circuit th at h
as been repaire
d
or
h
ad any
the ca pacitor . The resistan ce rea
d
i ng should be h ig h after electrical comp o n ents re p lace d .