TM 55-1520-240-23-9
11-280
AFCS INTERFACE TEST
(Continued)
11-280
TEST 2
PITCH ILCA AUTHORITY/PHASING TEST (BOTH)
6.
Set AFCS SYSTEM SEL switch (1) to 1 or 2.
(System under test.)
7.
Set AFCS line test set switches as follows:
a.
METER SOURCE switch (3) to ILCA DRIVE.
b.
MONITOR SELECT switch (4) to PITCH.
c.
MONITOR SELECT FDBK switch (5) to
SELF.
d.
ILCA DRIVE PITCH switch (7) to 0.
e.
HYDR VALVE switch (8) to OPEN.
8.
Set ILCA DRIVE PITCH switch (7) and MONITOR
SELECT FDBK switch (5) to positions in Table
11-1. Read voltages on digital display (6). (See
Table 11-1.) Observe response of actuator (9).
(See Table 11-2.)
9.
Set ILCA DRIVE PITCH switch (7) to 0.
10.
Set HYDR VALVE switch (8) to CLOSE.
11-1171