Section I. INTRODUCTION - TM-9-6695-257-34P0002

TM 9-6695-257-34P

Section I. INTRODUCTION

(2) Item Number.

The number used to

1. Scope. This manual lists spares and repair parts

identify item called out in the illustration.

that are required for maintenance of the Dual Power

Supply, Tektronix Model PS503. It authorizes the

b. Source, Maintenance, and Recoverability

requisitioning and issue of spares and repair parts as

(SMR) Codes.

indicated by the source and maintenance codes.

(1) Source Code. Source codes indicate the

2. General. This repair parts and special tools list

manner of acquiring support items for maintenance,

(RPSTL) is divided into the following sections:

repair, or overhaul of end items. Source codes are

a. Section I. Introduction.

entered in the first and second positions of the Uniform

SMR Code format as follows:

b. Section II. Repair Parts List. A list of spares

Code

Definition

and repair parts authorized for use in the performance of

maintenance. The list also includes parts which must be

PA -

Item procured and stocked for anticipated or

removed for replacement of the authorized parts. Parts

known usage.

lists are composed of functional groups in numeric

sequence, with the parts in each group listed in figure

PB -

Item procured and stocked for insurance

and item number sequence. Bulk materials are listed in

purpose because essentiality dictates that a

National Stock Number (NSN) sequence.

minimum quantity be available in the supply

c. Section III. NSN and Part Number Index. A list,

system.

in National Item Identification Number (NIIN) sequence,

PC -

Item procured and stocked and which otherwise

of all NSN's appearing in the listings, followed by a list in

would be coded PA except that it is deteriorative

alphameric sequence of all part numbers appearing in

in nature.

the listings.

NSN's and part numbers are cross-

referenced to each illustration figure and item number

PD -

Support item, excluding support equipment,

appearance.

procured for initial issue or outfitting and stocked

3. Explanation of Columns

only for subsequent or additional initial issues or

outfittings.

Not subject to automatic

a. Illustration. This column is divided as follows:

replenishment.

(1) Figure Number.

Indicates the figure

PE -

Support equipment procured and stocked for

initial issue or outfitting to specified maintenance

number of the illustration on which the item is shown.

repair activities.

PF -

Support equipment which will not be stocked but

which will be centrally procured on demand.