TM 1-6625-476-30
3-17
3-11. PNVS NSA INSTALLATION ON NIGHTSIDE TEST BENCH. (CONT)
CAUTION
DELICATE EQUIPMENT
Do not touch any optical surface after removal of shroud assembly. Dirt
from your hands (sweat and body oil) on optical surfaces causes an
unnecessary cleaning task. Excessive cleaning will wear away coating on
optical surfaces. Do not touch steel bands on mirror assemblies. The
bands could bend or stretch and cause poor operation.
(f) Loosen two screwlocks (3) securing cable connector P1 (2) and disconnect P1 from J4 (4).
(g) Remove shroud from PNVS NSA and place it on a clean, dry surface for temporary
storage.
c. Mounting Interface Structure Insert on PNVS NSA.
WARNING
SHARP EDGES
Use extreme caution when handling PNVS NSA. The edges of elevation
mirror drive bands are sharp and may be harmful if contact is made.
(1) Remove Allen screws (1, figure 3-10) and remove mask and window assembly (2) from
interface structure insert (3).
(2) Remove PNVS NSA from PNVS turret holding fixture as follows:
(a) Remove PNVS NSA cable connector (1, figure 3-11) from connector clip (2) on turret
holding fixture (3).
(b) Loosen three captive screws (4) and jiggle screws to ensure that they hang freely.
(c) Lift and remove PNVS NSA (5) from turret holding fixture.
(d) Place PNVS NSA on workbench on dunnage at least 2 inches high to protect cable
assembly.
