Tektronix 2213 - Page 87

M ainte
n
a
n ce-2213 Service
7 . Do not slide t
h
e com
p onents ove r any s u rface .
8 .
Avoid h and li ng compo n ents in areas
t h at have α floor
or
wo rk -s u rface covering capable
of generating α static
cha r ge .
I N TR OD U
CTIO N
P reve n tive mainte n ance
consists of cleaning, visual
inspection, lub r ication, an d c
h
ec
k ing i n strument
p erformance . Wh en accom p lis
h
e d
regula r ly, it may p r event
instrume nt malfunction an
d enh ance instrument reliability .
T h e severity of t
h
e
environment i n w h ic h t h e i nstrument is
use d d ete r min es t h
e
r
e q ui r ed fre qu ency of mainten ance . An
ap p r o p riate time to
accomplis h p r eve n tive mai
n
tena
n ce is
j ust b
efore instrument ad j ustment .
T
h e instrument s h ould be vis
u ally inspected an d cleane d
as
often as o p erating con d
itions re q uire . Acc u m u lation
of
dirt in t he instrument can
cause ove rh eati ng an d com-
pone
n t brea kd own . Dirt on
components acts as an
insulati ng b la nk et, p
r eventing efficient h eat d issi
p ation . It
also p rovi d es an
electrical con d uction p at
h
t
h
at
coul d r es u lt
in i n st r ume n t failure,
especially under hig
h - h umidity
cond itions .
G ENER A L CA
RE
T he ca b i n et minimizes accum
u lation of d ust inside t
h
e
instrument and s
h
ou
l
d
normally be in place w h en operati
ng
t he 2213 . T
he op tional front- p anel cover p
rovi d es both
d u st a nd
d amage protection for t
h
e
f r o nt panel a n d c rt
face, a nd it s
h oul d be in p lace w h enever t he instrume
n t is
stored
or is being transporte d .
I N SPE CTIO N A NDC LE
A N I N
G
Avoid
the use of chemical
cleaning agents which
might
d amage the plastics used
in this instrument .
U se
α nonresidue-type cleaner,
preferably
isopropyl
alcohol,
denatured ethyl alcohol,
or α solution of 1 %
mild
detergent with 99% water
.
B
efore u sing any
other type of
cleaner, consult your
Tektronix Service
Center or representative
.
9 .
U se α sol d eri ng iron t h at is con
n
ecte
d to eart h gro und .
10 .
U se only a pp rove d antistatic, vacuum-ty
p e d esol d er-
i ng tools for com p onent removal .
PREVEN TI VE M AI
N T EN A N C
E
E xterior
I N S
PE CTIO N . Ins p ect t he exter n al
p ortions of t h e
instrument for d amage, wear,
and missing p arts ; use
Ta b le 6-2 as α guide . Instr
u me n ts t h at appear to have b ee n
dropp e d or ot
h erwise ab u se d s h ould be c h ec ked t h oroug h ly
to verify
correct o p eratio n and p erformance . Deficiencies
found t
h
at
could cau se p ersonal in ju ry or co u
l
d
lea d to
furt
h er damage to t he i n str u ment s
h
ould
b e re p aire d
imme d iately .
To prevent getting
moisture inside the instrument
d uring
external cleaning, use only enough liquid to
d ampen
the cloth or applicator .
C LE AN I NG . L oose
d u st on the outside of t he instru-
me n t can be remove d wit
h
α
soft clot h or small soft-bristle
br u s h . T h e b rus h is p artic
u larly usef u l for d islo d ging d irt
on a nd a r oun d t
h
e
controls
an
d connectors . Dirt t h at
remains can be remove d with α soft clot
h
d
am
p
ened i n α
mil d d ete r gent-an d -water solution . Do
not use abrasive
cleaners . Clean t h e lig
h
t
filter an d t he crt face with α soft
lint-free clot h d ampene
d with eit he r d en ature d alco h ol o r
α mil d d etergent-an
d -water solution .
Interior
To gain access to
inte r nal portio n s of t he
instrument for
inspection and
cleaning, refer to t h e "R emoval
and
Rep lacement Instructions"
in t h e "Corrective M
aintenance"
p art of th is section
.
I NS PE CTIO
N . I n s p ect t
he internal p ortio n s of
t h e
instrument
for d amage an d wear, using Table 6-3
as α guide .
Deficiencies fo und s
h oul d be repaire d imme d iately
. T he
corrective p r oced ure
for most visi b le d efects is
ob vio u s ;
h oweve r , p
articular care must be ta
k en if h eat-damage d
components
are fo un d . Ove rh eating
usually in d icates ot h er
trouble
i n t h e instrume n t ; t h
erefore, it is im p ortant t h at the
cause
of over
h
eating be
cor r ecte d to p revent
recurrence
of t h e d amage .