TM 9-4940-568-20
2-42
Table 2-5. Generator Troubleshooting
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. NO OUTPUT VOLTAGE.
1
The line circuit breaker is OFF.
NOTE
Find out why the circuit breaker was turned OFF, make sure it is safe to reconnect
power.
Place the circuit breaker in the ON position.
The line circuit breaker is faulty.
Shut down the set, make sure the power output lines from the set have been disconnected
from all other sources of power, attempt to RESET the circuit breaker and throw it ON and
check for electrical continuity across each line contact. Replace the circuit breaker if there
is measurable resistance across any contact.
Field circuit breaker (1) CB21 has TRIPPED.
RESET the circuit breaker. If it keeps tripping, troubleshoot according to troubleshooting
Malfunction 4, Field Circuit Breaker Keeps Tripping.
Field circuit breaker (1) CB21 is faulty.
Shut down the set, attempt to RESET the circuit breaker and disconnect either lead.
Replace the circuit breaker if there is measurable resistance across the terminals.
