Table 4-1 Preventive Maintenance Checks and Services
Item Item to Not Fully Mission
No. Interval Check/Service Procedure Capable If:
1 B/D/A DBAL-I
2
Exterior -Check housing for A gap appears between
separation between the the front and the rear
front and the rear section section of the housing,
of the housing, missing missing switch knob,
screws and missing switch or adjuster.
knob, windage and
elevation adjuster.
WARNING: DO NOT STARE DIRECTLY INTO INFRARED LIGHT BEAM
2 B/A Exit Port Covers -Check for broken or missing
covers, exit port cover
retention studs.
-Move the Exit Port Covers
to the open position.
3 B/A Exit Port Lens -Check for cracked, dirty If cracked or missing
or broken lenses or missing lens or missing
ILLUM focusing adjustment. ILLUM focusing knob.
4 B/A Adjusters -Check for broken, missing Adjusters broken, missing
or stripped Adjusters. or stripped or laser
fails to move.
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