TM 9-5855-253-10
3-2. NIGHT SIGHT TROUBLESHOOTING PROCEDURES (CONT)
(Sheet 2 of 6)
On Night Sight:
a. Set actuator (1) to AIR/
BATT CHECK position.
b. Release two latches (2)
and remove afocal guard
cushion (3).
c. Look through eyepiece (4)
and slowly turn BRT
control (5) fully
counterclockwise and then
fully clockwise.
s
Return to next higher level
Does appearance of LED
raster (6) vary as BRT
of maintenance.
control (5) is turned?
YES
STEP 02
On Night Sight, look
through eyepiece (4) and
slowly turn CRTS
control (7) fully clock-
wise and then fully
counterclockwise.
Return to next higher level
Does appearance of LED
raster (6) vary as CTRS
of maintenance.
control (7) is turned?
YES
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