Special Information

F-Reparable item. When uneconomically reparable,

EN-91A and EN-91B

condemn and dispose at the direct support level.

TM 11-6740-265-12-1, Printer, Projection, Photographic

c. National Stock Number. Indicates the National stock

EN-91B

b. The illustrations in this manual are identical to those

number assigned to the item and will be used for

published in TM 11-6740-265-34P-1. Only those parts

requisitioning purposes.

d. Part Number. Indicates the primary number used by

assigned the third position SMR maintenance code "C"

or "O" are listed in the tabular listing; therefore, there

the manufacturer (individual, company, firm, corporation,

may be a break in the item number sequence. Only

or Government activity), which controls the design and

illustrations containing organizational authorized items

characteristics of the item by means of its engineering

appear in this manual.

drawings, specifications, standards, and inspection

requirements to identify an item or range of items.

5. How to Locate Repair Parts

NOTE

a. When National stock number or part number is

When a stock numbered item is requisitioned,

unknown.

the repair part received may have a different

(1) First. Using the table of contents, determine

part number than the part being replaced.

the functional group within which the item belongs. This

e. Federal Supply Code for Manufacturer (FSCM).

is necessary since illustrations are prepared for

The FSCM is a 5-digit numeric code listed in SB 708-42

functional groups and listings are divided into the same

which is used to identify the manufacturer, distributor, or

groups.

(2) Second. Find the illustration covering the

Government agency, etc.

f. Description. Indicates the Federal item name and, if

functional group to which the item belongs.

(3) Third. Identify the item on the illustration and

required, a minimum description to identify the item.

g. Unit of Measure (UIM). Indicates the standard of

note the illustration figure and item number of the item.

(4) Fourth. Using the Repair Parts Listing, find the

the basic quantity of the listed item as used in performing

the actual maintenance function. This measure is

figure and item number noted on the illustration.

b. When National stock number or part number is

expressed by a two-character alphabetical abbreviation

(e.g., ea, in, pr, etc). When the unit of measure differs

known.

from the unit of issue, the lowest unit of issue that will

(1) First. Using the Index of National Stock

satisfy the required units of measure will be

Numbers and Part Numbers, find the pertinent National

requisitioned.

stock number or part number. This index is in NIIN

h. Quantity Incorporated in Unit. Indicates the quantity

sequence followed by a list of part numbers in

of the item used in the breakout shown on the illustration

alphameric sequence, cross-referenced to the illustration

figure, which is prepared for a functional group,

figure number and item number.

subfunctional group, or an assembly. A "V" appearing in

(2) Second. After finding the figure and item

this column in lieu of a quantity indicates that no specific

number, locate the figure and item number in the repair

quantity is applicable, (e.g., shims, spacers, etc).

parts list.

4. Special Information

6. Abbreviations

a. The following publications pertain to the EN-91B

Not applicable.

and its components:

TM 11-6740-265-12, Printers, Projection Photographic