Operating Procedures - Continued
Air-to-Air Control of System - Continued
Remove the cover from the external control switch jack
located to the left bottom of the T/C, and insert the 90
degree connector of the external control switch assembly
into the jack.
Turn the T/C rotary switch to EXT to verify that the
Channel, AGU Number, and Flight Mode are correct.
Press the AGU Number switch corresponding to the AGU
number you are to be operating to obtain a blinking red
light indication. Test the external control switches by
depressing both switches simultaneously. The 100%
braking light should illuminate. The absence of this
condition indicates that there may be a broken connection
in one or both of the remote switches, and the remote
switch assembly should be replaced, and rechecked.