TM 55-4920-429-13
(8) If no further power-on testing is to be done, shut down and disconnect the test set as follows:
(a) Set both MASTER POWER switches to OFF.
(b) Shut down external power and disconnect all test connections from the test set.
4-36. AFCS ANN Circuit Test. This test checks the operation of the AFCS ANN switch circuit.
(See FO-8 for connector pin patterns.)
a. Connect digital multimeter set to measure resistance to receptacle pins J3-u and Jl-C.
b. Set the AFCS ANN switch to ON. The multimeter shall read to 0 to 2 ohms.
c. Set the AFCS ANN switch to OFF. The multimeter shall read infinity.
d. Disconnect the multimeter.
4-37. HDG SEL ENABLE Circuit Test. This test checks the operation of the HDG SEL ENABLE
switch circuit. (See FO-8 for connector pin patterns.)
a. Connect a digital multi meter, set to measure resistance, to pins J1-V and Jl-C.
b. Set the HDG SEL ENABLE switch to ON. The multimeter shall read O to 2 ohms.
c. Set the HDG SEL switch to OFF. The multimeter shall read infinity.
d. Disconnect the multimeter.
4-38. DASH PRE-ENGAGE Circuit Test. This test checks the operation of the DASH PRE-
ENGAGE switch circuit. (See FO-8 for connector pin patterns.)
a.
b.
c.
d.
Connect digital multimeter, set to measure resistance, to receptacle pins J3-Z and Jl-C.
Set the DASH PRE-ENGAGE switch to ON. The multimeter shall read 0 to 2 ohms.
Set the DASH PRE-ENGAGE switch to OFF. The multimeter shall read infinity.
Disconnect the multimeter.
4-27/4-28 BLANK
