2-306.8 Change 4
TM 9-2350-267-20
J Turn the engine AFES T/A panel Maintenance switch to the maintenance
position and check the green POWER ON lamp to make sure the AFES is not
powered. Disconnect the engine AFES T/Apanel from the test box and return
the AFES to its normal configuration. Turn the engine AFES T/A panel
Maintenance switch to the horizontal position and check the green POWER
ON lamp to verify the AFES is powered. Observe the engine AFES T/A panel
FEXT LEDs for fault indication. If the FEXT LEDS are not illuminated, the
problem is solved. If the FEXT LEDs are illuminated, go to step K.
K Locate the fire extinguisher cylinder bottle indicated as faulty by the engine
AFES T/A panel LED and disconnect it from wire harness 12352354. Using
extension cable TC6, connect fire extinguisher wire harness 12352354
connector P2 or P3 (from fire extinguisher) to connector TJ6 of the test box
(this simulates a good fire extinguisher cylinder bottle). Observe the engine
AFES T/A panel fault LED. If the fault LED does not illuminate or goes out,
replace faulty engine fire extinguisher cylinder bottle (p 14-27). If LED
remains illuminated repair leads 788E, 789E or 793E in connector P2, or
leads 793F or 794 in connector P3, or replace harness 12352354 (p 14-50.5).
Verify problem is solved.