TM 5-6115-629-14&P
Table 4-2. Troubleshooting.
Malfunction
Test or inspection
Corrective action
1. POWER IS ABSENT AT SWITCH BOX LOAD TERMINAL(S) WHEN ONE PARTICULAR POWER UNIT IS
SELECTED.
Step 1.
Step 2.
Step 3.
Step 4.
Step 5.
Check if associated generator set circuit breaker is set to ON position.
If circuit breaker is in OFF position, reset to ON position.
Verify associated generator set output is as desired. Check generator output at
load terminals.
If power is absent at generator set load terminals, troubleshoot
generator set. (Refer to TM 5-6115-545-12.)
Perform continuity check on associated power unit power cable.
If cable is defective, notify higher level of maintenance.
Perform continuity check on associated switchbox connector.
If connector is defective, notify higher level of maintenance.
Perform continuity check on associated switch.
If switch is defective, notify higher level of maintenance.
2. POWER IS ABSENT AT ONE OR MORE SWITCH BOX LOAD TERMINALS WHEN EITHER POWER UNIT
IS SELECTED.
Step 1.
Check load terminal(s) for looseness or damage.
a. If terminal is loose, tighten.
b. If terminal is damaged, notify higher level of maintenance.
Step 2.
Inside switchbox, check wires associated with inoperative terminal(s) for
looseness or broken wire terminals.
Tighten loose connection, repair or replace broken wires.
3. ONE OR MORE INDICATOR LAMPS DO NOT LIGHT WHEN POWER IS APPLIED BY POWER PLANT
THROUGH SWITCH BOX.
Step 1.
Check bulb(s).
Replace bulb(s) if defective.
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