2-306.6 Change 4
TM 9-2350-267-20
G
Check operation of engine AFES T/A panel overheat and fire detection
circuits as follows:
1. 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 compartment should begin to blink
on and off.
2. Observe red FIRE lamps on the engine AFES T/A panel
and RSI panel.
3. Reduce potentiometer setting to 1.0 k.
4. Observe red fire lamps on the engine AFES T/A panel and
on the RSI panel.
If the FIRE lamps stay on without blinking and the AUTO FEXT LED’S on the
engine AFES T/A panel illuminate, repair or replace wire harness 12352354
(p 14-50.5). Re-adjust the potentiometer knob to its maximum setting (10
kohms) and press the RESET button on the test box. Verify problem is solved.
If the FIRE lamps do not stay on and the AUTO FEXT LED’s do not
illuminate, replace engine AFES T/A panel (p 14-39). Re-adjust the potenti-
ometer knob to its maximum setting (10 kohms) and press the RESET button
on the test box. Verify problem is solved.
