Armasight NSMNYX1401F9DA1 NYX-14 FLAG MG Multi-Purpose Night Vision Monocular - Manual (Page 31)

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TABLE 4-1. PREVENTIVE MAINTENANCE CHECKS AND SERVICES
SEq NO.
LOCATION ITEM TO
CHECK/SERVICE
PROCEDURE
NOT FULLY MISSION
CAPABLE IF
BEFORE OPERATION CHECKS
1 Completeness Open the carrying case and inventory items by means of
comparing with the data specified in this manual.
Items are missing.
2 Soft Carrying Case Shake out loose dirt or foreign material. Inspect for tears,
cuts, excess wear or damage to the mounting clips.
3 External Surfaces Inspect for cracks or damage.
Scratches and gouges are OK if operation is not affected. Cracked or damaged.
4 Lens Cap Inspect for cracked, torn, or missing lens caps. Cap is torn or cut.
Cup is not secured to the housing
of the lens.
5 Eyecup Inspect for dirt, dust. Inspect for cracked or torn, bent,
broken or improperly fitting eyecup.
If necessary, clean as per Para 4.4.2.
Cup torn or cut.
6 Battery Adapter/
Compartment/ Cap
Verify that the battery adapter is present. Inspect for cor-
rosion, moisture, corroded or defective contacts. Verify
that the o-ring is present.
Adapter is missing, contacts dam-
aged or corroded, or o-ring is miss-
ing.
7 Function Switch Check the switch for operation (without a battery). Switch has no definite stopping
points. Switch knob is broken or
missing.
8 Pivotal Focusing
Lens
Check to make sure pivotal focusing lens is present. Pivotal focusing lens is missing.
9 Gain Control Knob
(for Nyx-14 MG)
Check knob for operation. Knob inoperative.
Knob is missing.
10 Lenses Inspect optical surfaces for dirt, fingerprint residue,
scratches, chips, or cracks.
Scratches or chips hinder vision
with NYX-14 turned on. Cracks are
present.
Photoreceiver damaged.
Pivotal focusing lens damaged.
11 Focusing Ring Rotate the focusing ring to ensure free movement (range
is approximately 1/3 turn).
Ring gets stuck or adversely affects
the user’s ability to properly focus
the unit.
12 Eyepiece Ring Rotate the eyepiece ring to make sure the eyepiece is not
too tight or too loose. Range is approximately ½ turn.
Ring gets stuck, is too loose, or ad-
versely affects the user’s ability to
properly adjust the diopter.
13 Optional Equip-
ment
Inspect optional items for dirt, or corrosion, damage, and
missing parts. Check for proper operation.
If necessary, clean as detailed in Part 4.4.2.
Equipment is damaged or parts are
missing.
OPERATIONAL CHECKS
CAUTION:
Do not activate the NYX-14 in daylight unless the lens cap is on, or you are operating under dark conditions.
CAUTION:
Do not forget to open the photoreceiver after finishing operational checks.
NOTE:
Daylight checks are described below.
14 Function Switch Install the battery. Verify that the photoreceiver is open.
Turn the switch from OFF to ON. Look for the green glow
in eyepiece (it should appear after a slight delay), and wait
about 10 s for image to disappear.
Look for a flashing red light in eyepiece viewing area.
Image is present.
Red light is flashing.
Close the photoreceiver by placing the pivotal focusing
lens in rightmost position. Pull out the IR and turn the
switch from ON to the IR position. Look for a permanent
red glow in the eyepiece viewing area. Turn the switch
from IR to ON position.
Permanent red glow is absent
15 Gain Control
(for Nyx-14 MG) Rotate the gain control knob to verify that it adjusts the
screen’s brightness level.
Inspect for a broken or missing knob.
Knob does not adjust the screen’s
brightness level.