HP 54501A - Section 5. Replaceable Parts; Introduction; Abbreviations; Replaceable Parts

5-1 .
INTRODUCTION
This
section containsinformation for
ordering
parts . Table 5-1 lists
the abbreviations used in
the parts list
and throughout the manual .
Table 5-2
lists all replaceable parts for the in-
strument
. Table 5-3 contains the names and
addresses
corresponding to the code number
of the manufacturer
. Figure 5-1 is the ex-
ploded
view
of
the HP 54501 A .
5-2 . ABBREVIATIONS
Table 5-1
lists the abbreviations used in
the
parts list, the schematics, and
elsewhere in
this manual . In some cases
two forms of the
abbreviations are used,
one in all capital let-
ters, and one in
partial
or
no capital letters .
However,
elsewhere in the manual, other ab-
breviation
forms may be used with both
lower-
case and
uppercase letters .
5-3 .
REPLACEABLE
PARTS
Table 5-2 is a list of replaceable
parts and is
organized as follows :
a .

Electrical
assemblies in alphanumerical
order
by reference designation
.
b .

Chassis-mounted parts
in alphanumerical
order by reference
designation .
c .

Electrical assemblies
and their com-
ponents in
alphanumerical order by
reference
designation .
The information
given for each part consists of
the
following :
a .

Reference
designation .
b .

Hewlett-Packard
part number .
c .

Part number Check
Digit (CD) .
d .

Total quantity
(OTY) in instrument or on
assembly .
The total quantity is given
once and at
the first appearance of the
part number
in the list .
e .

Description
of the part .
f .

Typical
manufacturer of part in an
identifying five-digit code .
HP 54501A REPLACEABLEPARTS
SECTION 5
REPLACEABLE PARTS
5-4
. EXCHANGE ASSEMBLIES
Some parts used in this instrument have been
set up for an exchangeprogram . This
program allowsthe customer to exchange his
faulty assembly with one that has been
repaired, calibrated, and performance-verified
by the
factory . The cost is significantly
less
than that of a new part .

The exchange parts
have a
part number in the form XXXXX-695XX .
After receiving the repaired exchange part
from
Hewlett-Packard,
a United States cus-
tomer has 30 days to return the faulty assemb-
ly . For orders not originating in the United
States, .contact the local Hewlett-Packard ser-
vice organization .
If the faulty
assembly is
not
returned within the
warrantytime limit, the
customer
will be charged an additional
amount . The additional amount will be the dif-
ference in price betweena new assembly and
that of an exchange assembly .
5-5 . ORDERING INFORMATION
To order a part in the
material list,
quote
the
Hewlett-Packard part
number, indicate the
quantity desired, and address the order to the
nearest
Hewlett-Packard Sales/Service Office .
To order a part not listed in the material list,
include the instrument part number, instru-
ment serial number, a description of the part
(including its function), and the number of
parts required .
Address the order
to the
nearest
Hewlett-Packard Sales and Service
Office .
5-6 . DIRECT
MAIL ORDER SYSTEM
Within the USA, Hewlett-Packard can supply
parts through a direct mail order system .
There are several advantages to this system :
a .

Direct ordering
and shipment from the
Hewlett-Packard Parts Center in Mountain
View, California .