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Tektronix 454A User Manual

Tektronix 454A
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12
.
Sl i de
t
h
e
C
R
T
assembl y
t o
t
h
e
r ear of
t
h
e
i nst r ument
on
t
h
e
V
er t i cal
Out
p
u
t
Am
p
l i f i er
ci r cui t
boar
d an d
t
h
e
unt i l
t
h
e f ace
p
l at e
cl ear s
t
h
e
mou n
t i ng
st u
d
s
.
T
h
en
l i f t
t
h
e
t
h
i c
k
f i l m
h y
b
r i d
ci r c
u
i t
h
ave
i n
d
i vi
d
ual
soc
k
et s f or
eac
h
f r ont
of
t
h
e
C
R
T
assembl y
up
and
sl i
d
e
t
h
e
ent i r e
assembl y
l ea
d
.
T
h
ese soc
k
et s
ar e p
l ace
d
i n t
h
e st an
d
ar d
l ea
d
conf i gur
out
of
t
h
e
i nst r
u
ment
.
at i on
.
Tr ansi st or s
w
h
i c
h
ar e
mount e
d
on
t
h
e c h
assi s
u
se
si l i cone
gr ease t o
i ncr ease
h
eat
t r ansf er
.
R
e
p
l ace
t
h
e
si l i cone
gr ease
w
h
en
r e
p
l aci ng
t
h
ese
t r ansi st or s
.
13
.
R
emove
t
h
e
cl ear
p
l ast i c
i mp
l osi on
s
h
i el d
an d
t
h
e
l i g
h
t
p
i
p
e
assembl y
f r om
t
h
e f r ont of
t
h
e
C
R
T
.
14
.
On
t
h
e
C
R
T
cl am
p
,
l oosen
t
he
scr ew
t
h
at
cont r ol s
H
andl e
si l i cone
gr ease wi t
h
car e
.
Avoi d
get t i ng
si l i
h
ow
t i g
h
t l y
t
he
cl am
p
sec
u
r es
t
h
e
C
R
T
.
cone
gr ease
i n
t
h
e
eyes
.
W
as
h
h
ands
t
h
or oug
h
l y
af t er
use
.
15
.
H
ol
d
t
h
e
l ef t
h
an
d
on
t
h
e
C
R
T
f ace
p
l at e
and
pu
s
h
f or war
d
on
t
h
e
C
R
T
base wi t
h
t
h
e
r i g
h
t
h
an d
.
As
t
h
e
C
R
T
st ar t s
out
of
t
h
e
s
h
i el
d
,
gr as
p
i t
f i r ml y
wi t
h
t
h
e
l ef t
h
an
d
.
Wh
en
t
h
e
C
R
T
i s
f r ee
of
t
h
e
cl am
p
,
sl i de
t
h
e
s
h
i el
d
com-
p
l et el y
of f
t
h
e
C
R
T
.
B
e
car ef ul
t
h
at
t
h
e
nec
k p
i ns
d
o
not
cat c
h
on
t
h
e
t r ace
r ot at i on
coi l
or ot
h
er
o
b
st r uct i ons
an
d
b
en d
.
W
A
RN
I
N
G
F
use
R
e p
l acement
.
T
h
e p
ower - l i ne
f
u
ses ar e
l ocat ed
on
t
h
e
r ear
p
anel
i n t
h
e
V
ol t age
Sel ect or
Assem
b
l y
.
P
ower -
sup
p
l y
f uses
ar e
l ocat e
d besi de t
h
e p
ower
t r ansf or mer
.
Tabl e
4- 4
gi ves
t
h
e
val ue
an d
l ocat i ons
of
t
h
e f
u
ses
use
d
i n
t
h
i s
i nst r ument
.
TA
BLE
4- 4
M
ai
nt enance- 454zyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA
/
R
454
To
r e
p
l ace
t
h
e
C
R
T
r ever se
t
h
e
a
b
ove
pr oce
d
ur e
.
U
se
t
h
e
l i g
h
t
p
i
p e
l enses
as ±
gu
i
d
e t o
measur e
h
ow
f ar
t
h
e
C
R
T
F
use
R
at i ngs
f ace p
l at e
s
h
oul
d
ext en
d o
u
t
of
t
h
e
C
R
T
s
h
i el
d
.
Do
not
over t i g
h
t e
n
t
h
e
C
R
T
cl amp
scr ew
.
R
ecommen
d e
d
t i g
h
t e
n
-
Ci r cui t
i ng
t or
q
ue
i s
4
t o 7
i nc
h
- I
b
s
.
Af t er
t
h
e
C
R
T
i s
com
p
l et el y
N
umber
R
at i ng
L
ocat i on
F
unct i on
r e- i nst al l e
d
,
c
h
ec
k
t
h
e
cal i br at i on
of t
h
e
H
i g
h
V
ol t age,
T
R
AC
E
R
OTATI O
N
,
ASTI G,
¥
- Axi s Al i gn
an
d
Geomet r y
F1101
2
F
ast
V
ol t age
Sel ect or
115- vol t
l i ne
a
d
j u
st ment s
.
T
h
e
V
er t i cal
an d
H
or i zont al
ci r cui t s
s
h o
u
l
d b
e
Assem
b
l y
c
h
ec
k
e
d f or cor r ect
cal i
b
r at i on
al so
.
R
ef er
t o
t
h
e
P
er f or -
F
1102
1
F
ast
V
ol t age
Sel ect or
230- vol t
l i ne
mance C
h
ec
k
/ Cal i br at i on
sect i on
f or
t
h
e cor r ect p
r oce-
Assembl y
d
ur es
.
F
1204
0
. 25
F
ast
By
p
ower
+150
vol t s
t r ansf or mer
F
1437
2
F
ast
B
y
p
ower
H
i g
h
vol t age
Tr ansi st or
R
e p
l acement
.
Tr ansi st or s
s
h
oul d
not
b e
r e-
t r a
n
sf or mer
p
l ace
d
unl ess t
h
ey
ar e
act
u
al l y
d
ef ect i ve
.
I f
r emoved
f r om
t
h
ei r
soc
k
et s
dur i ng
r o
u
t i ne
mai nt enance,
r et ur n
t
h
em
t o
t
h
ei r
or i gi nal
soc
k
et s
.
U
nnecessar y
r e
p
l acement
of
t r an-
Gl ass
R
ee d
-
R
el ays
R
e
p
l acement
.
T
h
e
gl ass
r eed- r el ays
si st or s
may
af f ect
t
h
e
cal i
b
r at i on
of
t
h
i s
i nst r ument
.
Wh
en
used
i n
t
h
i s
i nst r ument
ar e
p
r essur i ze
d
.
T
h
er ef or e,
saf et y
t r ansi st or s
ar e
r e
p
l ace
d
,
c
h
ec
k
t
h
e
o
p
er at i on of
t
h
at
par t of
gl asses
s
h
oul d be
wor n
t o p
r ot ect
t
h
e
eyes
w
h
e
n
r e
p
l aci ng
t
h
e
i nst r
u
ment
w
h
i c
h may
be
af f ect e
d
.
t
h
ese
r el ays
.
To
avoi
d
d
amage
t o
t
h
e
r ee
d
- r el ays,
d o
not
appl y
st r ess
t o
t
h
e
met al - gl ass
bond
.
Wh
en
i t i s
necessar y
t o
. zyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA
' .
.
be
nd
±
l ea
d
,
use
t wo
p
ai r s
of
l ong- nose
p
l i er s
.
B
ef or e
r epl ac-
i ng
±
r ee
d
- r el ay,
be
sur e
t
h
e
act uat i
n
g
ci r cui t r y
i s
not
at
f aul t
.
See
t
h
e
Tr o
u
bl es
h
oot i ng
p
r oce
d ur e
f or
met
h
o
d
s
of
P
O
WER
swi t c
h
must
be
t ur ned
of f
bef or e
r emovi ng
c h
ec
k
i ng
t
h
e
ci r cui t
.
I t i s
i m
p or t ant
t
h
at
t
h
e
r e
p
l acement
or
r epl aci ng
t r ansi st or s
.
r ee
d
- r el ay
be
cor r ect l y
posi t i oned
wi t
h
i n
t
h
e
dr i ve- coi l
assembl y
wi t
h
t
h
e
same
l ead
l engt
h
as
t
h
e
or i gi
n
al
t o p
r o-
vi
d
e
si mi l ar
magnet i c
c
h
ar act er i st i cs
.
R
e p
l acement
t r ansi st or s
s
h
oul
d
b
e of
t
h
e
or i gi nal
t y
p
e or
±
d
i r ect
r e
p
l acement
.
F
i g
.
4- 2
s
h
ows
t
h
e
l ea
d
conf i gur at i on
R
EM
O
V
A
L
:
of
t
h
e
semi con
d
uct or s
u
se
d
i n t
h
i s
i
n
st r ument
.
Some
p
l ast i c
case
t r ansi st or s
h
ave
l ea
d
conf i gur at i ons
w
h
i c
h
d o
not
agr ee
1
.
O
b
ser ve
t
h
e
ph
ysi cal
p
osi t i on
of
t
h
e
l ea
d
s
an
d
gl ass
wi t
h
t
h
ose
s
hown h
er e
.
I f ±
t r ansi st or
i s
r e
p
l ace
d
by
±
t r an-
b ul b of
t
h
e ol
d
r ee
d
- r el ay
.
si st or
ma
d
e
by
± d
i f f er ent
manuf act
u
r er
t
h
a
n
t
h
e
or i gi nal ,
c
h
ec
k
t
h
e
manuf act ur er ' s
basi ng
d
i agr am
f or
cor r ect basi ng
.
Al l
t r ansi st or
soc
k
et s
i n
t
h
i s
i nst r
u
ment
ar e
wi r ed f or
t
h
e
2
.
U
nsol der
t
h
e
l ea
d
s
of
t
h
e
ol
d
r ee
d
- r el ay
f r om
t
he
b
asi ng
use d
f or
met al - case
t r ansi st or s
.
T
h
e
t r a
n
si st or
soc k
et s
sol
d er p
ost s
.
4-
1
3

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Tektronix 454A Specifications

General IconGeneral
BrandTektronix
Model454A
CategoryTest Equipment
LanguageEnglish

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