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Page Title:
Table 4. Lighting System Troubleshooting Procedures. |
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 TM 10-3930-660-24-1
TROUBLESHOOTING PROCEDURES - CONTINUED
0006 00
Table 4. Lighting System Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. Check for tripped circuit
1.
Blackout Lights Do Not Work.
breaker (CB4), faulty switch,
faulty wiring, or faulty
circuit breaker (CB4).
a. The circuit breaker will
trip if there is a shorted or
grounded wire.
b. The circuit breakers will
automatically reset after
cooling. They cannot be
reset manually.
c. Under normal operating
conditions, circuit
breakers should never
require replacement.
However, if a circuit
breaker does not reset
after it has cooled, the
circuit breaker is
defective and must be
replaced (WP 0071 00).
2. Check circuit for shorts and
Replace defective electrical
bad grounds. Refer to the
components as required (WP
Check for defective blackout
Test and, if necessary, replace
2.
Floodlights, Horn, and Backup Alarm
Operate in Blackout Mode.
light relay (RY 2).
console-mounted blackout light
relay (RY 2) (WP 0083 00).
1. Check that floodlight bulbs
Replace bulbs if necessary (WP
3.
Floodlight(s) Do Not Work.
have not failed.
2. Check if circuit breaker (CB
Check circuit breaker for shorts,
7) is tripped.
broken wire, or bad ground.
Refer to Electrical Schematic
a. The circuit breakers will
trip if there is a shorted or
grounded wire.
b. The circuit breakers will
automatically reset after
cooling. They cannot be
reset manually.
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