TM 5-6675-250-20
2-16. DETERMINATION OF AZIMUTH VALUE FOR REFERENCE MIRROR (Continued)
L O C A T I O N / l T EM
A C T I O N
R E M A R KS
SERVICE (Continued)
p.
Place the MODE SELECT switch (1) on the
ECU (2) to SELF TEST (3) and the TEST
SELECT switch (4) to CW (5), and turn the
GRU output shaft 5 to 10 degrees clockwise
from the position of the previous azimuth
determination. Switch the SELF TEST switch
out of the SERVO position to stop the turning
a c t i o n.
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