Lubr Icatio N; Sem Ico N D Uctor; Che C Ks; Adju St Men T A F T Er Rep Ai R - Tektronix 5440 Instruction Manual

M
ainte n ance-5440
T
h e corrective procedure for most visible d efects is
obvious ; h
owever, p articular care must be ta k e n if h
eat-
damage d compo n e n ts are fou n d . Over h eati n g usually
indicates ot h er trouble i n
t
h e instrument ; th erefore, it is
im po rtant t h at t h e cause of over h eati n g be corrected to
p reve n t recurrence of th e
d
amage .
Cam Switc h L ubricatio n
LUBR
ICATIO
N
Ge n erally, t h ere are no com p o n ents i n
t
h is instrume n t
t h at require α regular lubricatio n program during th e life of
th e instrument .
In m ost cases, factory lubricatio n
s
h o u ld be ad e qu ate
I
1 Ο Apply l ub rica n t
to t h e drum
j
ournals an d
for t h e life of t h e i n strume n t .
H
owever, if t h e switc h h as mating surface in th e mounting bearings .
bee n disassembled for re p laceme n t of switc h sub- p arts, α
lubricatio n k it co n taining t h e
necessary lubricati n g
materials an d
i
n structions is available t h roug h any
Te k tronix
F
ield Office . Ord erTe k tronix
P
art No . 003-0342-
01 . Ge n eral
E
lectric
V
ersil u be® silico n e grease s h ould be
ap p lie d
s
p ari n gly so t h at t h e lubrica n t does
n
ot get on t h e
co n tacts .
R
efer to
F
ig . 4-1 for lubrication i n structions .
S
EM
ICO
N
D
U
CTO
R
C
HE C K S
P
erio d ic checks of t h e semicon d uctors i n
t
h is instru-
me n t are
n
ot recommen d e d . T h e best c h ec k of semico n -
d uctor performance is actual o p eratio n
i
n
t
h e i n strume n t .
M ore details on c h ec k i n g semico n ductor o p eratio n are
give n u n der Tro u bles h ooti n g .
AD
JU
STM
EN
T A
F
T
ER REP
AI
R
After any electrical com p o n e n t
h
as been replaced , t h e
a dj ustme n t of t h at partic u lar circuit s h oul d be c h ec k ed, as
well as t h e a d j ustme n t of ot h erclosely relate d circuits . T h e
P
erforma n ce C h ec k
a
n d Ad j ustme n t p rocedure in t h is
ma nu al p rovi d es α quic k an d convenie n t mea n s of c h ec k -
i n g i n str u me n t operatio n . In some cases, mi n or troubles
may be reveale d or correcte d b y ad j ustme n t .
Apply l u bricant to t h e wear surface of t h e
index w h eel .
Apply lubricant to t h e in d ex roller and roller
guide i n
t
h e front bearing . Α
t
h in film s h oul d
be a p p lied to th e inner face of t h e detent
springs if more t h an one s p ring is re p laced .
E
nsure t h at some lubricant is
p
resent at t h e
interface b etwee n
t
h e bearing and retainer cli p .
(1481)1967-2
F
ig . 4-1 .
L
ub ricatio n p roced u re for α ty p ical cam switc h .