TM 5-3610-294-13&P
4-10. UNIT TROUBLESHOOTING. - Continued
Table 4-2. Unit Troubleshooting (Cont.)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
8.
POWER DISTRIBUTION BOX ASSEMBLY DOES NOT OPERATE. - CONT.
d.
Neither phase light is lit when phase test switch (2) is closed.
Step 1.
Reverse correct/incorrect lamps.
Replace defective lamp.
Step 2.
Request Module C supervisor set circuit breaker CB1 to OFF. Request generator operator shut down
generator. Test phase test switch for continuity.
Replace phase test switch (2), (Paragraph 4-23c).
If good, replace circuit board (6), (Paragraph 4-23e).
e.
Incorrect phase light (7) is lit when phase test switch (2) is closed.
Step 1.
Request generator operator recheck cable connection at generator.
Correct connection at generator.
If good, replace circuit board (6), (Paragraph 4-23e).
f.
Incorrect voltage or frequency measured on one or two phases.
Step 1.
Check generator output.
Replace generator. If generator output is proper, replace generator cable (4).
g.
Incorrect voltage measured on all phases.
Step 1.
Check generator output.
Replace generator. If generator output is proper, replace voltage meter (8). (Paragraph 4-23g.)
h.
Incorrect frequency measured on all phases.
Step 1.
Check generator output.
Replace generator. If generator output is proper, replace frequency meter (9). (Paragraph 4-23h.).
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