TM 1-1520-238-MTF
2-29
PROCEDURE
TROUBLESHOOTING
REFERENCE
AFTER STARTING APU (CONT)
(7) INTR LT INST control On.
Check reticle brightness
corresponds to control position
through full range. Then set as
desired.
(8) Align HMD reticle with BRU.
(9) HMD BRSIT switch Actuate
then release.
(10) BRSIT IHADSS switch OFF.
(11) INTR LT INST control As
desired.
(12) SIGHT SEL switch As
required.
*22. TADS Complete operational checks
and boresight as required.
a. Grayscale adjust check:
(1) GS switch Actuate, Verify
symbology replaced by
grayscale on HOD.
(2) ORT BRT and CONT controls
Actuate through full range and
adjust for optimum scaling.
(3) HDD switch Actuate. Repeat
steps (1) and (2) above. Return
to HOD operations.