TM 55-1520-240-23-9
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BENCH TEST AFCS COMPUTER (AVIM)
(Continued)
11-277
478.
Set CONTROL PANEL SIMULATION AFCS
switch (12) to SELECT.
479.
Set DISCRETE SIGNALS VERT GYRO VALID
switch (16) to 1.
480.
Set METER switch (6) to AC.
481.
Set CIRCUIT SELECT TENS switch (8) to 20.
482.
Set CIRCUIT SELECT A/B SELECT switch (9)
to B.
483.
Set CIRCUIT SELECT B UNITS switch (11) to 6.
484.
Set ANALOG SIGNALS GND SIGNAL switch
(41) to SIGNAL.
484.1. Set METER RANGE switch (7) to 2V.
485.
Adjust ANALOG SIGNALS PITCH AIT HSI HDG
pot. (42) toward 520 until AC/DC VOLTMETER
(10) reads +0.412.
486.
Set METER switch (6) to DC.
487.
Set ACTUATOR SIMULATION DASH switch (57)
to TFI.
488.
Set CIRCUIT SELECT TENS switch (8) to 40.
489.
Set CIRCUIT SELECT A UNITS switch (18) to 1.
490.
Set CIRCUIT SELECT A/B SELECT switch (9)
to A. Read AC/DC VOLTMETER (10). Reading
shall be -0.200 to +0.200.
491.
Set CIRCUIT SELECT A UNITS switch (18) to 2.
Read AC/DC VOLTMETER (10). Reading shall
be -1.20 to -1.80.
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