Operation Manual

2-9
ITEM
NO.
INTER-
VAL
LOCATION
PROCEDURE
NOT FULLY
MISSION
CAPABLE IF:
CHECK/
SERVICE
7 Before/
After
Eyeguard Inspect for dirt, dust, cracked or torn eye-
guard. Inspect for bent, broken, or improp- erly fitting eyeguard. If necessary, clean with water.
Chips and cracks are permitted on the eye- guard retaining rings as long as they do not interfere with installa- tion of eyeguard.
8 Before/
After
Objective Lens Rotate focus ring to ensure free movement
(range is approximately 1/3 turn). Check objective lens for chips, cracks and dents. Check the infinity focus locking ring for tightness. Check for cracks.
Focus ring is binding or not able to move. Chips, cracks, or dents prevent full field-of-view, instal- lation of LIF or the ability to focus. Cracked or loose.
9 Before/
After
Neck Cord and Objective Lens Cap
Inspect for cracked, torn, or missing ob- jective lens cap. Inspect neck cord for cut, damage, or loose ends. Re-tie ends if necessary.
Damaged.