MAINTENANCE AND SERVICE
INTRODUCTION
This
Maintenance
and
SeTVice
Section will help you
maintain
the
CB42 within
the
published
spe<;if>catio;ms
l,Ind
assure years
of
useful application.
This
oectiQlI
covers gener"l maintenance and complete
recalibration in5tnJctions.
The
IIChemal';c
and
part3
list
M well
as
board
legends
are
included on
separate
a!>eetl;.
The
schemBtiCl!
use Senoore's "Cireuit
Trace"
color
cod-
ing
to
aid
in
<:ireuit tracing
if
service ever becomes
rnM:e8Sllry.
Complete warranty information ill included
in
the Quali-
ty Al!Ilurllnce
Tag
attached
to the CB42.
The
QA
tag
alll()
includes general warnings applying
t<>
your
CB42
and
in_
WARNING
The!le 5ervicing instructions are for
<ae
by
qll8lified
personnel
only.
To
avoid
el"ctric
shock,
do
not
perform
any
servicing
other
than
that
contained
in
the
operating
in.
dructions
unless
you
are
qualified
to
do
10.
formation on fllctQry service.
(fyou
should find
it
r>ece.
IIry
to
return
your CB42 for service,
encJOlIe
the
QA
tag
with
the
final tester·s!rigJUlture.
FUNCTIONAL DESCRIPTION
AND
BLOCK DIAGRAM
,
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P,;:;.
...........
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a
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.,
-..,
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I
,
,
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r;'
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"""Q
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Fig.
61-Block
diagrum
of
CB42.
48
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