Replaceable Parts; Introduction; Ordering Information; Non-Listed Parts - HP 3478A Technical Manual

5-1. INTRODUCTION

5-2. This section has information for ordering
replacement parts.
alphameric order of their reference designators and
indicates the description, -hp- Part Number of each part,
together with any applicable notes, and provides the
following:
a. Total quantity used in the instrument (QTY
column). The total quantity of a part is given the first
time the part number appears.
b. Description of the part. (See abbreviations listed
in Table 5-1.)
c. Typical manufacturer of the part is a five-digit
code. (See Table 5-2 for list of manufacturers.)
d. Manufacturers part number.
5-3. Miscellaneous and Chassis Parts are listed at the
end of Table 5-3. A disassembly procedure of the
instrument is also included with the Miscellaneous and
Chassis Parts listing.

5-4. ORDERING INFORMATION

5-5. To obtain replacement parts, address order or
inquiry to your local Hewlett-Packard Office.
Table 5-3 lists the parts in
Table 5-1. Standard Abbreviations
SECTION V

REPLACEABLE PARTS

Locations are listed at the back of this manual.) Identify
parts by their Hewlett-Packard Part Numbers. Include
instrument model and serial number.

5-6. NON-LISTED PARTS

5-7. To obtain a part that is not listed, include:
a. Instrument Model Number
b. Instrument Serial Number
c. Description of the part.
d. Function and location of the part.
5-8. PARTS CHANGES
5-9. Components which have been changed are so
marked by one of three symbols; i.e., ∆, ∆ with a letter
subscript, e.g., ∆
∆ . A ∆ with no subscript indicates the component listed
10
is the preferred replacement for an earlier component. A
∆ with a letter subscript indicates a change which is
explained in a note at the bottom of the page. A ∆ with a
number subscript indicates the related change is
discussed in backdating (Section VI). The number of the
subscript indicates the number of the change in
backdating which should be referred to.

5-10. PROPRIETY PARTS

(Office
5-11. Items marked with a dagger (t) in the reference
5-1
TM 11-6625-3071-14
, or ∆ with a number subscript, e.g.,
a