TM 9-2350-287-20-1
2-19. TROUBLESHOOTING CHART (continued).
v. AFES, ENGINE (continued).
(7) AFES MEGOMETER TROUBLESHOOTING
PROCEDURES (continued).
Troubleshoot engine AFES system (para
2-19 v. (3), Fault lamp remains on. Auto
led is lit.). Verify problem is solved.
F. 1. Check operation of engine AFES T/A panel
overheat and fire detection circuits as follows:
a. Reduce potentiometer setting to 5.0 k.
NOTE
The red FIRE lamps on the engine AFES T/A
panel and the RSI panel in the crew compart-
ment should begin to blink on and off.
b. Observe red FIRE lamps on the engine
AFES T/A panel and RSI panel.
c. Reduce potentiometer setting to 1.0 k.
d. Observe red fire lamps on the engine AFES
T/A panel and on the RSI panel.
Do the FIRE lamps stay on without blinking and
do the AUTO FEXT LED’s on the engine AFES
T/A panel illuminate?
Repair or replace wire harness 12352354
(para 7-78). Re-adjust the potentiometer
knob to 10K (fully on) and press the RESET
button on the test box. Verify problem is
solved.
Replace engine AFES T/A panel (para 21 -13).
Readjust the potentiometer knob to 10K (fully
on) and press the RESET button on the test
box. Verify problem is solved.
Continued on next page
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