TM 9-4120-404-14
Table 3-3. Unit Troubleshooting.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 5. Check for defective EMI filter.
Replace defective EMI filter.
Step 7. Check for defective rectifier.
Replace defective rectifier.
Step 8. Check for defective logic box assembly.
Replace logic box assembly if defective.
Step 9. Check for loose electrical connections.
Tighten electrical connections.
Step 10. See Electrical Wiring Diagram, Figure 1-6 and check for defective wiring.
Repair wires as required.
If unit still malfunctions, notify Direct Support maintenance.
Step 11. Check for defective motor controller.
If logic box assembly passes functional operation test in step 10, replace
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