TM 55-1520-240-23-9
11-277
BENCH TEST AFCS COMPUTER (AVIM) (Continued)
11-277
772.
Connect hose (76) (APP E-36) to port P (86).
772.1. Slowly turn INCREASE knob (82)
counterclockwise until KNOTS indicator
(83) reads 35. Turn knob fully clockwise.
772.2. Check HDG ENABLE lamp (86.1) is OFF.
773.
Slowly turn INCREASE knob (82)
counterclockwise until KNOTS indicator
(83) reads 40. Turn knob fully clockwise. Read
and record V21 AC/DC VOLTMETER (10)
reading.
774.
Calculate V22. Subtract reading of step 771 from
reading of step 773 (V22 = V21 - V20). Reading
shall be -0.141 to -0.173.
774.1. Slowly turn INCREASE knob (82)
counterclockwise until KNOTS indicator
(83) reads 45. Turn knob fully clockwise.
774.2. Check HDG ENABLE lamp (86.1) is ON.
775.
Slowly turn INCREASE knob (82)
counterclockwise until KNOTS indicator
(83) reads 50. Turn knob fully clockwise. Read
and record V23 AC/DC VOLTMETER (10)
reading.
776.
Calculate V24. Subtract reading of step 771 from
reading of step 775 (V24 = V23 - V20). Result
shall be -0.225 to -0.275.
776.1. Deleted.
777.
Slowly turn INCREASE knob (82)
counterclockwise until KNOTS indicator
(83) reads 100. Turn knob fully clockwise.
Read and record V25 AC/DC VOLTMETER (10)
reading.
778.
Calculate V26. Subtract reading of step 771 from
reading of step 777 (V26 = V25 - V20). Result
shall be -0.900 to -1.100.
779.
Slowly turn INCREASE knob (82)
counterclockwise until KNOTS indicator
(83) reads 150. Turn knob fully clockwise.
Change 1
11-1139
