C54.
C55.
C56.
TM 1-1510-225-MTF
d. Defective bearings.
Propeller deice inoperative.
a. Circuit breaker tripped.
b. Propeller &ice switch defective.
c. Ammeter defective.
d Defective propeller deice timer.
Stall warning deice inoperative.
a. STALL WARN circuit breaker tripped
b. STALL WARN circuit breaker defective.
c. STALL WARN deice switch defective.
d Stall warning deice heating element defective.
Left or right fuel vent deice Inoperative.
a. FUEL VENT circuit breaker tripped.
b. FUEL VENT circuit breaker defective.
c. FUEL VENT deice switch defective.
d. Fuel vent deice heating element defective.
TROUBLESHOOTING GUIDE D - CAUTION PANEL
CONDITION
PROBABLE CAUSE
D1.
Placard light (annunciator Panel) will not illumi-
nate when press-to-test button is pressed.
a. Defective placard light.
b. Defective lamps.
c. Defective fault detection module.
D2.
MASTER WARNING or MASTER CAUTION
annunciator light will not illuminate for any red
or yellow faults.
a. Defective fault warning light.
b. Defective fault detection module.
c. Defective annunciator control module.
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