Maintenance; Preventive M Aintenance; Troubleshooting - Tektronix 7A16A Instruction Manual

M
AI
N
T
EN
A
N
C
E
Introduction L ubrication
T
h
is sectio
n
of t
h
e manual co
n
tai
n
s mai
n
te
n
a
n
ce i
n
for-
U
se α cleaning-type lubricant on s h
aft
bu
s
h
ings, inter-
mation for use in preventive mai
n
te
n
a
n
ce, corrective connecting plug contacts, a nd
switc
h
contacts .
Lub
ricate
mainte
n
a
n ce, an d troubles
h
ooting of t
h e 7 Α 16 Α .
switc
h d
etents wit
h
α h eavier grease . Α lu b
rication k it
containi
n
g t
h
e
n
ecessary l
ub
ricating
mate
r
ials and
i
n
structions is availa
b
le t
h
ro
u
g
h
any T
EK
T
R
O
N
IX F iel
d
F
urt
h
er m ainte
n
a
n
ce i
n
formatio
n
relati
n
g to ge
n
eral
Office . Or d er TEKTRONIX
P
art
N
umber 003-0342-00 .
mainte
n
a
n
ce can
b
e foun d in t
h
e i
n
st
r
uction manuals for
t
h
e 7000-series oscillosco
p
es .
PREVEN
TI
VE M
AI
N
TE
N
A
N
C
E
General
T
R
O
UBL
ES
H
OOTI
N
G
Section 4-7A16A
Th
e following is provided to augme
n
t i
n
formation
General
contained in ot
h
er sections of t
h
is man
u
al w
h
en tro
ub
le-
s
h
ooti
n
g t
h
e 7 Α 16 Α . T
h
e sc
h
ematic d iagrams, circuit
P
reventive maintena
n
ce, co
n
sisti
n
g of cleaning, visual d
escri
p
tion, and calibration sections s
h
oul d be used to full
inspection, etc ., p erformed on α regular basis, will im
p
rove
a d vantage . T
h
e circ
u
it d escription section gives d etaile d
t
h
e
r
eliability of t
h
is i
n
str
u
ment .
P
erio d ic c
h
ec
k
s of t
h
e
information on circuit be
h
avior a
nd
out
p
ut req
u
ireme
n
ts .
semico
n
ductor
d
evices use
d
i
n
t
h
e u
n
it are
n
ot recom-
mended
as α
preve
n
tive mai
n
te
n
ance measure . See
semicon d uctor-c
h
ec
k
ing information given
un
der Tro
ub
le-
Trou
b
les
h
ooting Aids
s
h
ooti
n
g .
Cleaning
Diagrams . Circuit d iagrams are give n
on fol
d
o
u
t
p
ages in
Section 7 . T
h
e circuit number an d
electrical val
u
e of eac
h
component in t
h
is inst
r
ume
n
t are s h
ow
n
on t
h
e diagrams .
Im p orta
n
t voltages a
r
e also s
h
ow
n
.
Circuit
B
oar d s. T
h
e ci
r
cuit
b
oar
d
s used in t
h
e 7 Α 16 Α are
Avoid t
h
e use of chemical cleaning age
n
ts w
h
ic
h outline d on t h e sc h ematic d iagrams, a n
d
ph
otogra
ph
s of t
h
e
might
d
amage t
h
e plastics
u
se
d
in t
h
is instrument.
b
oar
d
s are s
h
ow
n
on t
h
e b
ac
k
s of t
h
e sc
h
ematic
d
iagrams .
Special ca
r
e s
h
ould
b
e ta
k
e
n wh
en cleaning t
h
e E
ac
h b
oar d -mou
n
te d electrical component is i d entifie d on
P
oly
ph
enyle
n
e Oxide attenuato
r
boa
rd
. Do not apply
t
h
e
ph
otogra
ph
by its circuit number .
any solve
n
t containing
k etones, esters or h alogenated
hyd
r
oca
r
bons. To clean,
u
se only water sol
ub
le
dete
r
gents, et
h
yl, met
h
yl or isopropyl alco h ol . Com
p
onent and
W
iring Color Co
d
e . Colored stripes or
d ots on resistors an
d
ca
p
acitors signify electrical values,
tolerances, etc ., accor d ing to t
h
e ΕΙΑ sta
n
dar
d
color code .
F
ront P anel .
L
oose
d
ust may
b
e remove
d
wit
h
α soft Com p onents not color co d e d usually
h
ave t
h
e value
p
rinte d
clot
h
or α
d
ry
br
us
h .
W
ate
r
a
nd
mil
d d
etergent may
b
e on t
h
e
b
ody .
use d ;
h
oweve
r
, a
b
rasive clea
n
e
r
s s
h
o
u
l d not be
u
sed .
T h
e insulate d wires
u
se d for interco
nn
ectio
n
i
n
t
h
e
Inte
r
ior . Cleaning t
h
e interior of t h
e unit s
h
oul d prece de
7 Α 16 Α are color co d ed to facilitate tracing wires from one
calibration, since t
h
e cleaning
p
r
ocess coul d alte
r
t
h
e
p
oi
n
t to a
n
ot
h
er i
n
t
h
e unit .
settings of t
h
e cali
b
ration a
dj
ustments .
U se low-velocity
compresse d air to b low off t
h
e acc
u
m
u
lated d
u
st .
H
ardene d
dirt can be remove d wit
h
α soft, d ry br
u
s
h
, cotton-tippe d Semicon d uctor
L
ead Configuration . T
h
e lea
d
config
u
-
swab, or clot
h d
am p ene d wit
h
α mil d d
etergent a
nd
water ratio
n
s of t
h
e semicon d uctor d evices use d in t
h
is instru-
solutio
n
.
ment are s
h
own on t
h
e sc
h
ematic d iagrams .