TM 5-2420-230-24-1
Table 3-6. Unit Troubleshooting Table. -- Continued
Malfunction
Test or Inspection
Corrective Action
42.
REVERSE ALARM DOES NOT WORK.
Remove all jewelry such as rings, dog tags, bracelets, etc. If jewelry or tools contact positive electrical circuits, a
direct short may result. Damage to equipment and injury or death to personnel may occur.
NOTE
Blackout mode disables reverse alarm.
Step 1.
Check for 24 Vdc at wire 378 on reverse alarm (1) (refer to FO-3).
If 24 Vdc is present at wire 378, replace reverse alarm (1) (Para 12-38).
If 24 Vdc is not present at reverse alarm (1), check wire 378 for continuity. Replace wire harness as
necessary (Para 12-27).
Step 2.
Check reverse alarm relay (2) for proper operation and good connections (refer to FO-1).
If reverse alarm relay (2) does not function correctly, replace reverse alarm relay (Para 12-15).
If connections at reverse alarm relay (2) are loose or broken, tighten or repair connections as
necessary.
Change 1
