M2/M3 BFV: FIRE CONTROL SYSTEM - OD1608 - LESSON 1/TASK 4
(4) Press the AP SS button on the weapon control box.
the AP SS or HE SS button can be used to successfully boresight using
the buddy method. In this subcourse, the AP SS will be used. The LO
AMMO indicator light will flash when the AP SS or HE SS button is
Unless otherwise noted, all the settings and
adjustments described in the remaining steps of
this boresighting method refer to actions and
controls in the boresighting vehicle (the vehicle
in which the night sight is being boresighted to
the day sight).
The other vehicle will be
referred to as the buddy vehicle.
THE AP STATUS INDICATOR.
(5) Check to be sure that AP appears on the status indicator
If AP does not appear on the status indicator,
troubleshooting procedures must be performed to isolate the problem.
Troubleshooting procedures can be found, when required, in TM 9-2350-
252-20-2-1, chapter 3.
If AP does appear on the status indicator,