Introduction - Honeywell BR3C9 Operation Manual

INTRODUCTION
'l'his manual provides the information needed
to order field replaceable parts for
BR3C9,
BR3E4, BR3ES
Disk Storaqe
Um
t (DSU).
Information
within this
manual
is
provided by
representative filUBtratioDs and their companion
parts
lists. The parts shown on the mustratioDS
are assigned index numbers. These numbers cross
reference the filUBtrations to the associated parts
lists. The first m.ustrati0D in the manual shows
the complete DSU. Subsequent filustrations pro-
gressively break
the
unit
down
into its component
parts
and assemblies.
The parts lists associated with each nlustration
are organized
in
four columns:
• The Index Number column cross references
the applicable entry
to the
associated filustration.
When more than one entry
is given for a particular
index number. the use
of
the particular part
is
defined in the
Notes co1wan.
• The Part Number column provides the eight
digit number by which a part may be ordered. In
some cases the last two
~ts
(referred to as Tab
numbers) may be shown as "xx". This situation
exists when an assembly (which is not normally
83318300 D
considered field replaceable) changes
tab
numbers
rapidly in the course
of
DOrmal factory buUd.
If
it is necessary to order an assembly which is cata-
10gued In this manner. the actual
part
number can
usually be f01.U1d on the part number label attached
to
the
assembly.
If the
actual
part
number cannot
be determined. be
sure
to include on the order the
series
code of the
machine. and a
listing
of
all
the
change orders installed.
• The Description column provides
the
part
nomenclature.
This
column also provides informa-
tion on the relationship of parts and assemblies.
This is
accomplished by means of indentation
within
the column. An indented item is part of a previoUS
assembly wb1ch is indented
to
a lesser degree.
• The
Notes column is used to show differ-
ences in cODflguration when more than one configu-
ratioD
of
a machine is covered in the manual.
This
is
shown by ideDtUying a Model Level
(Mod
A),
"by identifyinq a machine series code
and
chanqe order number (SIC
10
with
PE3SS37),
or by identifying the last two digits of the
eight diqit assembly part number to which
the
particu~ar
part applies (Tab
17).
1